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EP3790675B1 - Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure - Google Patents

Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure Download PDF

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Publication number
EP3790675B1
EP3790675B1 EP19816688.6A EP19816688A EP3790675B1 EP 3790675 B1 EP3790675 B1 EP 3790675B1 EP 19816688 A EP19816688 A EP 19816688A EP 3790675 B1 EP3790675 B1 EP 3790675B1
Authority
EP
European Patent Office
Prior art keywords
sensor
force sensor
force
measuring roller
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19816688.6A
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German (de)
English (en)
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EP3790675A1 (fr
Inventor
Gert Mücke
Julian KREMEYER
Thorsten Voss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BFI VDEH Institut fuer Angewandte Forschung GmbH
Original Assignee
BFI VDEH Institut fuer Angewandte Forschung GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by BFI VDEH Institut fuer Angewandte Forschung GmbH filed Critical BFI VDEH Institut fuer Angewandte Forschung GmbH
Priority to EP21192579.7A priority Critical patent/EP3936249A1/fr
Publication of EP3790675A1 publication Critical patent/EP3790675A1/fr
Application granted granted Critical
Publication of EP3790675B1 publication Critical patent/EP3790675B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Definitions

  • the invention relates to a measuring roller for determining a property of a strip-shaped material guided over the measuring roller, in particular a metal strip.
  • a generic measuring roller is, for example, from U.S. 5,285,684 A known.
  • the invention also relates to a method for determining a property of a strip-shaped product, in particular a metal strip, which is guided over the measuring roller.
  • the invention also relates to the use of such a measuring roller.
  • Measuring rollers are used for cold and hot rolling of metal strip and are, for example, from the DE 42 36 657 A1 known.
  • the arrangement of the force sensors at a distance from the surrounding wall and the closing of the annular gap with the help of an O-ring or a sufficiently elastic plastic prevents effective transverse forces in the body of the measuring roller from interfering with the force sensors or the measurement result.
  • Such disruptive forces are the result of the belt tension acting on the measuring roller and the associated deflection of the measuring roller.
  • Their cross-section takes on the shape of an ellipse, the longer axis of which runs parallel to the strip.
  • the deflection of the measuring roller simulates an unevenness of the belt to the force sensor if it is transmitted to the measuring sensor by shunted force.
  • Such a force shunt cannot be completely avoided when using a seal in the annular gap, since the sealing forces inevitably act on the force sensor.
  • the end DE 102 07 501 C1 a solid roller for determining deviations in flatness when handling strip-shaped material, in particular metal strip, with force sensors arranged in recesses is known, in which the force sensors are axially accessible.
  • the axially extending recesses are often made with deep-hole drilling tools. In the case of measuring rollers with a barrel width> 1000 mm, very long drilling tools must be used, as the drilling tool first has to be moved over the sometimes very long pins for the frontal drilling of the recess. Often the cause is the drilled channel running out of line.
  • a measuring roller for determining flatness deviations when handling strip-shaped material, in particular metal strip, with a measuring roller body and a casing tube at least partially surrounding the measuring roller body and force sensors arranged in recesses is known, the recesses from one end face of the measuring roller in the measuring roller body and / or extends into the jacket tube.
  • the recess can be closed at the front with a cover.
  • the journals of this measuring roller provided at the end face are formed on the measuring roller body.
  • the disadvantage of this measuring roller is the weakening of the measuring roller body or the jacket tube due to the recesses made. With wide measuring rollers, as with deep hole drilling, driving over the bearing journal is a major disadvantage.
  • Another problem is the closing of the channels / grooves incorporated up to the front side, since these are not like with the DE 102 07 501 C1 with drilling tools (round channels), but with milling tools (angular channels).
  • the measuring rollers of the prior art determine the flatness of the strip on the basis of individual sensors distributed over the circumference of the measuring roller.
  • the measurement results of the individual sensors are often set in relation to one another in order to determine the flatness during the evaluation.
  • measuring errors always occur when the metal strip vibrates. This is the case, for example, when the measuring roller is arranged in the vicinity of a reel.
  • the oscillation means that the amount of force acting on the individual force sensor no longer depends solely on the strip tension and the flatness of the strip, but is increased or decreased by the oscillation. This leads to measurement errors, especially with evaluation methods that relate the measurement results from individual sensors distributed over the circumference.
  • the invention is based on the problem of increasing the informative value of the investigations carried out with such measuring rollers on the properties of the strip-shaped material guided over the measuring roller.
  • DE 102 07 501 C1 teaches in column 3, lines 1 and 2, to arrange several force sensors in a recess at a distance from one another.
  • the US 2013/0298625 A1 shows in her Fig. 2 also several force sensors spaced apart from one another.
  • the DE 10 2014 012 426 A1 teaches in [0021] to arrange several force sensors in a recess and specifies this teaching in their Fig. 2 in that several force sensors are arranged in the recess at a distance from one another.
  • the general teaching can be taken from the state of the art, in the case of several force sensors arranged in a recess, to arrange these at a considerable distance from one another.
  • This may be based on the endeavor to distribute the existing (few) force sensors as broadly as possible in the respective recess in order to set up the measurement as broadly as possible over the possible width of the measurement field predetermined by the length of the recess. Furthermore, this widely spaced arrangement of the force sensors within the recess may be based on the idea of avoiding incorrect measurements.
  • a force acting radially on the measuring roller body of a measuring roller by means of a force sensor which is arranged at a distance from the circumferential surface of the measuring roller body in a recess of the measuring roller body, there is the problem that the radially acting force is caused by the material of the measuring roller body through which they penetrate must be scattered in order to reach the sensor surface of the force sensor.
  • the arrangement of the force sensors according to the invention can also offer the advantage of a higher resolution and more precise mapping of the actual flatness.
  • the measuring roller according to the invention has a measuring roller body.
  • the measuring roller body has a closed circumferential surface.
  • the measuring roller body is a full roller that extends along a Extends longitudinal axis.
  • a full roll is understood to mean a measuring roll body which is in one piece and whose shape was produced either with a primary molding process, for example casting, and / or its geometric shape by separating processes, in particular by machining, in particular by turning, drilling, milling or grinding from a one-piece semi-finished product will be produced.
  • the measuring roller journals for rotatable mounting of the measuring roller for example in ball bearings, are also part of the one-piece body.
  • the DE 20 2014 006 820 U1 there are also designs, such as those for example Fig. 2 the DE 20 2014 006 820 U1 are shown, conceivable, in which the main part of the measuring roller body is designed as a cylindrical solid roller, which has frontally arranged covers on which the measuring roller journals are carried out.
  • the measuring roller body according to the invention can, for example, like that in Fig. 3 the DE 20 2014 006 820 U1 executed measuring roller body be formed, in which the measuring roller body is formed with molded pins and a jacket tube is pushed over the measuring roller body.
  • the measuring roller does not have a jacket tube, but is designed as a full roller.
  • the measuring roller body of the measuring roller according to the invention has a closed circumferential surface. This is achieved in that the measuring roller body is designed as a solid roller and all recesses provided in the measuring roller body are designed in such a way that no recess leads from the recess to the circumferential surface.
  • the recesses are particularly preferably guided axially and have an opening on one end face of the measuring roller body or transverse channels are provided within the measuring roller body, which lead from the recess radially further into the interior of the measuring roller body, for example to a collecting channel in the Middle of the measuring roller body.
  • a closed circumferential surface of the measuring roller body can also be achieved in that in embodiments in which the respective recess has a recess leading in the direction of the circumferential surface, these are closed by a closure element.
  • a closure element can be a casing tube that completely surrounds a base body of the measuring roller body, for example in FIG Fig. 3 and 4th the DE 10 2014 012 426 A1 shown.
  • the closure element can also be of the type in DE 197 47 655 A1 be formed cover shown.
  • the measuring roller does not have a jacket tube, but is designed as a full roller, either as one in which no recess leads from the recess to the circumferential surface, or as one in which the respective recess has an in Direction of the circumferential surface leading recess, but which is closed by a closure element, such as a cover.
  • a closure element such as a cover.
  • coatings for example the circumferential surface of a solid roll or the circumferential surface of a casing tube, are conceivable, for example to reduce friction or to protect the strip-shaped material to be guided over the measuring roll.
  • At least one recess is provided in the measuring roller body of the measuring roller according to the invention. It has been shown that the advantages of the invention can be achieved with a single recess in the measuring roller body. For example, when measuring the flatness, it is conceivable to provide information about the flatness of the strip-shaped material guided over the measuring roller once per revolution of the measuring roller.
  • the measuring roller body has several recesses.
  • the recesses are designed at the same radial distance from the longitudinal axis of the measuring roller body.
  • all of the recesses are arranged so as to be equidistant from one another in the circumferential direction.
  • a first group of recesses is provided, which are particularly preferably arranged at the same radial distance from the longitudinal axis and equidistantly distributed in the circumferential direction, and in which at least one further recess is provided in addition to this first group of recesses which is either designed differently in terms of its radial distance from the longitudinal axis than the recesses of the first group and / or does not have the same distance in the circumferential direction from the other recesses as the other recesses have to one another.
  • a measuring roller with regard to the flatness measurement in the same way as a measuring roller from the prior art, for example like the one from FIG DE 102 07 501 well-known full role or from DE 10 2014 012 426 A1 known measuring rollers, but then for the equipment according to the invention to provide these prior art measuring rollers with a further recess made outside the grid, with which, for example, another measurement is carried out.
  • the recesses mentioned in this paragraph are preferably those which run in the axial direction of the measuring roller body.
  • the measuring roller has a single recess and all force sensors of the measuring roller are arranged in a single recess, for example in a single axially extending recess.
  • the measuring roller body has a closed circumferential surface and is closed off at the end by an end face.
  • the end faces are arranged at an angle of 90 ° to the circumferential surface.
  • the measuring roller has bearing journals.
  • the bearing journals are formed on the end faces.
  • the measuring roller body is designed to be cylindrical.
  • the measuring roller according to the invention is designed in a first variant of the invention with at least one recess in the measuring roller body, which is arranged at a distance from the circumferential surface, the recess not opening towards the circumferential surface, or no further recess continuing from the recess, for example no bore leads to the peripheral surface.
  • the recess leads from the circumferential surface into the interior of the measuring roller body, but is closed by a closure element.
  • the measuring roller is designed with several recesses in the measuring roller body, which are spaced apart from the circumferential surfaces
  • either all recesses are designed such that no recess, for example no bore, leads from the recess to the circumferential surface (and the recess itself does not open into the circumferential surface), or some recesses are designed in such a way that no recess leads from the respective recess to the circumferential surface, while with other recesses a recess leading in the direction of the circumferential surface is provided, but which through a closure element is closed.
  • the closure element is a cover or, for example, a jacket tube.
  • a recess in the measuring roller body extends in a direction parallel to the longitudinal axis of the measuring roller body. If, according to a preferred embodiment, several recesses are provided in the measuring roller body, it is preferred that all the recesses of the measuring roller body each extend in a direction parallel to the longitudinal axis of the measuring roller body.
  • the respective recess opens at least at one of its ends, preferably at both of its ends on an end face of the measuring roller body.
  • a recess ending at one end face of a measuring roller body can be closed by an end cap, this end cap only closing this recess.
  • the end face of the measuring roller body is completely closed by a cover, as for example in FIG Fig. 1 and 2 , respectively.
  • Fig. 4 the DE 10 2014 012 426 A1 shown.
  • the recess is designed to be elongated, "elongated” being understood to mean that the recess is larger in a first direction (in the longitudinal direction of the recess) than in any direction perpendicular to this direction.
  • the extent of the elongated recess in the longitudinal direction is twice, or particularly preferably more than twice, greater than in any direction perpendicular to this direction.
  • the longitudinal direction of the recess with the longitudinal direction of the measuring roller body forms an angle that is smaller than 75 °, particularly preferably ⁇ 45 °, particularly preferably ⁇ 30 °, particularly preferably ⁇ 10 °, particularly preferably ⁇ 5 °.
  • the longitudinal direction of the recess is not perpendicular to the longitudinal axis of the measuring roller body. If - which would be conceivable in one embodiment - the longitudinal axis of the recess and the longitudinal axis of the measuring roller body do not intersect, the above-mentioned interpretation rule applies to the projection of the longitudinal axis of the recess onto the plane containing the longitudinal axis of the measuring roller body.
  • the projection of the longitudinal axis of the recess onto a plane containing the longitudinal axis of the measuring roller body is carried out in such a way that the projection of the longitudinal direction of the recess with the longitudinal direction of the measuring roller body encloses an angle that is smaller than 75 °, in particular is preferably ⁇ 45 °, particularly preferably ⁇ 30 °, particularly preferably ⁇ 10 °, particularly preferably ⁇ 5 °.
  • the longitudinal axis of the recess obviously does not intersect the longitudinal axis of the measuring roller body, nor does a projection of the longitudinal axis onto a plane containing the longitudinal axis of the measuring roller body, the longitudinal axis of the Measuring roller body does not cut.
  • DE 20 2007 001 066 U1 For example, a measuring roller with elongated recesses is shown.
  • a first force sensor and a second force sensor are arranged in a recess (if the measuring roller has only one recess: in the recess) of the measuring roller.
  • the first force sensor has a sensor surface, the force sensor being able to generate a sensor signal when the position of the sensor surface of the first force sensor changes.
  • the second force sensor has a sensor surface, wherein the second force sensor can generate a sensor signal when the position of the sensor surface of the second force sensor changes.
  • Force sensors are referred to as force sensors because they are used to measure forces, particularly preferably pressure forces. In order to measure the force acting on them, the force sensors are designed in such a way that they have a sensor surface and can generate a sensor signal when the position of the sensor surface changes.
  • the force sensors usually have an associated reference system and react to changes in the position of the sensor surface in this reference system.
  • Force sensors often have a housing.
  • the reference system is then often the housing.
  • the force sensor can, for example, determine whether the position of the sensor surface has changed relative to the housing. If the force sensor is designed, for example, as a piezoelectric force sensor, it has a piezo-quartz that can generate an electrical signal when the position of one of its surfaces is changed relative to a reference surface, for example an opposite surface of the piezo-quartz, the piezo-quartz Quartz, for example, is compressed.
  • a force sensor designed as a strain gauge changing the position of the surface of the force sensor changes the length of the measuring wire or of the measuring grid formed from measuring wires, mostly stretched, but sometimes also compressed.
  • the optical properties of the force sensor for example the refractive index or reflection properties, are changed by the change in the position of the surface.
  • the force sensors to be used according to the invention have a sensor surface whose position change is used by the force sensor to determine a force acting on it observed.
  • the sensor surface is a surface of the element whose properties are changed to generate the sensor signal, for example a surface of the piezo-quartz itself.
  • intermediate pieces are provided in force sensors of this type, on which the sensor surface is formed.
  • Such intermediate pieces are often rigid blocks in which a change in the position of one surface of the rigid block due to the rigidity of the block leads directly to a change in the position of the opposite surface.
  • Such intermediate pieces can be used to form the sensor surface protruding from other parts of the force sensor, in particular from a housing.
  • a sensor surface protruding from other parts of the force sensor increases the measurement accuracy because a clearly defined surface is created on which the environment can act. By protruding sensor surfaces, for example, measurement errors due to force shunt can be prevented.
  • the force sensor according to the invention can, for example, like that in DE 1 773 551 A1
  • the force sensor shown may be designed and have a piezoelectric element which is arranged in a housing and consists of a multilayer crystal arrangement and which is arranged between two force transmission disks.
  • the sensor surface would be the outer surface of the in Fig. 1 the DE 1 773 551 A1 upper power transmission pulley or the outer surface of the in Fig. 1 the DE 1 773 551 A1 lower power transmission pulley.
  • the sensor surface is designed to be flat.
  • the surface normal of the flat sensor surface of the first force sensor points in the direction of the circumferential surface.
  • the surface normal of the sensor surface of the second force sensor is also designed to be flat and, in a preferred embodiment, also points in the direction of the circumferential surface.
  • the surface normal of the sensor surface of the first force sensor is parallel to the surface normal of the sensor surface of the second force sensor.
  • a radial direction of the measuring roller body is a surface normal of the sensor surface of the first and / or the second force sensor.
  • the surface normal of a flat sensor surface at the point on the sensor surface at which the sensor surface is intersected by a radial line of the measuring roller body is at an angle to this radial line of the measuring roller body that is smaller than 45 °, particularly preferably smaller than 20 °, particularly preferably smaller than 10 °, particularly preferably smaller than 5 °.
  • the sensor surface of a force sensor used in the measuring roller according to the invention is a flat surface.
  • the sensor surface of the first force sensor is designed symmetrically with respect to the plane which contains the longitudinal axis of the measuring roller body and which intersects the sensor surface of the force sensor and in which a surface normal of the sensor surface also lies.
  • the sensor surface is designed to be ring-shaped, in particular circular-ring-shaped.
  • the sensor surface is circular or elliptical are also preferred. Rectangular, square or polygonal sensor areas are also conceivable.
  • the sensor surface is designed to be flat.
  • the sensor surface is a surface which is emphasized from the other elements of the force sensor and which is in contact with a boundary surface of the recess or which is in contact with a closure element which closes the recess towards the circumferential surface.
  • At least two force sensors used in the measuring roller according to the invention are designed in the same way, therefore of the same type and in particular of the same series, in particular preferably constructed identically.
  • the first force sensor is arranged in the recess next to the second force sensor.
  • the sensor surface of the first force sensor is arranged closer to an end face of the measuring roller body than the sensor surface of the second force sensor.
  • the first force sensor is arranged in the recess offset in the circumferential direction with respect to the second force sensor. In a preferred embodiment, however, the first force sensor and the second force sensor are not arranged offset to one another in the circumferential direction.
  • the first force sensor and the second force sensor are arranged at the same radial distance from the longitudinal axis of the measuring roller body.
  • the one in which the sensor surface of the first force sensor directly adjoins the sensor surface of the second force sensor is particularly preferred.
  • a point lying on the circumference of the circular or annular first sensor surface would adjoin a point lying on the circumference of the circular or annular second sensor surface.
  • the radial forces acting on the circumference of the measuring roller could be measured without gaps.
  • a force shunt could only be prevented if the peripheral surfaces of the sensor surfaces are so smooth that no frictional forces are transmitted. It is therefore to be assumed that the sensor surfaces in the practically relevant implementation are mainly arranged at a slight distance from one another in order not to influence the measurement results of the respective sensor surface by loads on an adjacent sensor surface.
  • the design rule claimed according to the invention is based on a radially extending end boundary line.
  • the measuring roller is regularly used for measuring radially acting forces. These forces occur when the strip-shaped material to be examined partially wraps around the measuring roller.
  • the end boundary line defines the point at which it intersects the circumferential surface, at which a radially acting force is still just above the sensor surface of the one force sensor; and be it in the case of a circular or annular sensor surface also only above a point lying on the circumference of the sensor surface.
  • the angle between these lines is less than 65 °, particularly preferably less than 55 ° and particularly preferably less than or equal to 45 °, particularly preferably less than or equal to 40 °, particularly preferably less than or equal to 35 °, particularly preferably less than or equal to 30 ° , particularly preferably less than or equal to 20 °, particularly preferably less than or equal to 10 °, particularly preferably less than or equal to 5 °.
  • embodiments are thus also provided in which parts of the second sensor surface lie within the "Rötscherkegel", which is based on a radially acting force that acts on the peripheral surface at the intersection of the end delimitation line and the peripheral surface.
  • the line that connects the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor runs parallel to Longitudinal axis of the measuring roller.
  • first force sensor and the second force sensor are arranged in an elongated recess and the direction of the longitudinal extent of the recess runs parallel to the longitudinal axis of the measuring roller.
  • the first force sensor is arranged in a first radial recess, preferably a pocket
  • the second force sensor is arranged in a second radial recess, preferably a pocket.
  • the line connecting the point of the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point of the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor can also be parallel run to the longitudinal axis of the measuring roller.
  • the radial recess of the first force sensor is arranged axially (in the direction of the longitudinal axis of the measuring roller) and offset in the circumferential direction of the measuring roller to the radial recess of the second force sensor.
  • the line connecting the point of the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point of the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor would not be parallel to Run the longitudinal axis of the measuring roller.
  • Such an alignment of the line is also given with elongated recesses, the longitudinal extent of which does not run parallel to the longitudinal axis of the measuring roller body, but also has a component pointing in the circumferential direction
  • the line which connects the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor with the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor runs in one Angle to a plane which is perpendicular to the longitudinal axis of the measuring roller, preferably at an angle of> 15 °, particularly preferably at an angle of> 20 °, particularly preferably in an angle of> 25 °, particularly preferably at an angle of> 30 °, particularly preferably at an angle of> 45 °. In a preferred embodiment, the angle is 90 °.
  • the angle is 90 °
  • the line running between the point of the sensor surface of the first force sensor, which is closest to the sensor surface of the second force sensor, with the point of the sensor surface of the second force sensor, that of the sensor surface of the first Force sensor is closest connects, parallel to the longitudinal axis of the measuring roller.
  • the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor and the point on the sensor surface of the second force sensor that is closest to the sensor surface of the first force sensor are not one behind the other in the circumferential direction.
  • Web heights can be more than 2 mm, preferably 5 mm or more and are preferably less than 20 mm, preferably less than 15 mm and particularly preferably equal to or less than 12 mm.
  • the point on the sensor surface of the first force sensor that is closest to the sensor surface of the second force sensor is less than 2.2 times the web height away from the point on the sensor surface of the second force sensor, that of the sensor surface of the first force sensor is closest, preferably less than 2 times, particularly preferably equal to or less than 1 times the web height.
  • the first force sensor and the second force sensor are arranged in a recess which leads from one end face of the measuring roller body to the opposite end face of the measuring roller body.
  • the recess in which the first force sensor and the second force sensor are located leads in the direction parallel to the longitudinal axis of the measuring roller body and extends over at least 50%, especially preferably at least 60%, especially preferably at least 75%, especially preferably at least 80%, especially preferably at least 90%, especially preferably at least 95% of the length of the measuring roller body, as it results when it is measured from end face to end face (i.e. without taking the pins into account).
  • the measuring roller has several recesses
  • all the recesses are designed in the same way, that is to say have longitudinal extensions parallel to one another and have the same lengths.
  • the DE 102 07 501 C1 shows a possibility of staggering the depth of the recesses in a helical manner. Such an embodiment could be supplemented with regard to the choice of the lengths of the recesses so that one of the axially extending recesses shown there is designed in such a way that it runs from one end face to the opposite end face of the measuring roller.
  • the recess has an opening which is arranged on an end face of the measuring roller body.
  • This recess can be designed to be open. However, designs are also conceivable in which the recess is closed by a cover. In the case of several recesses that open out at the end face, in this embodiment each recess would have its own cover.
  • Embodiments of the measuring roller according to the invention in particular in those embodiments in which the measuring roller has several recesses, are also conceivable in which the measuring roller body has an end cover for jointly closing the openings of the recesses, for example a cover as shown in Fig. 1 or Fig. 2 the DE 10 2014 012 426 A1 will be shown.
  • the measuring roller has a plurality of recesses, each of which has openings that are arranged on an end face of the measuring roller body, to close these openings with an end cover, as is shown, for example, in Fig. 1 the DE 102 07 501 C1 will be shown.
  • the measuring roller has a plurality of force sensors, all of which are arranged in a recess. Particularly preferably more than 5, particularly preferably more than 7, particularly preferably more than 10, particularly preferably more than 15 force sensors are arranged in a recess.
  • the measuring roller has a first recess in which a multiplicity of force sensors are arranged next to one another, particularly preferably more than 5, particularly preferably more than 7, particularly preferred more than 10, particularly preferably more than 15 force sensors arranged in the first recess, while the measuring roller in this embodiment has further recesses in each of which only a single force sensor or less than 15, particularly preferably less than 10, particularly preferably less than 7, especially preferably less than 5 force sensors are arranged.
  • the force sensors are distributed equidistantly over the length of the recess, but at least equidistant from one another (for embodiments in which the distance between the last force sensor and the end of the recess does not correspond to the distance that this last force sensor has to its neighboring (penultimate) force sensor).
  • a first group of force sensors is arranged equidistant from one another and a second group of force sensors are arranged at a different distance from the force sensors of this first group, wherein the force sensors of the second group can in turn be arranged equidistant from one another.
  • a zone can be created within the recess, within which the force sensors are arranged closer to one another, while the force sensors also provided outside this zone are arranged further apart from one another.
  • the force sensors are wedged in the recess.
  • they can be loaded with a predefined preload.
  • the wedging not only fixes them in their position within the recess, but can also be loaded with pretensioning forces.
  • Loading with pre-tensioning forces is preferred, since when the measuring roller is used in normal operation, the installation conditions for the force sensor can change under different operating conditions, e.g. due to temperature changes. It is therefore preferred that the force sensors, when installed in the recesses, are subjected to a prestressing force that is so high that the force connection between the force sensor and the recess wall is maintained under all operating conditions during operation, so that a hysteresis-free and linear measurement is guaranteed.
  • the force sensors should be fixed in the recesses, namely wedged, and preferably also braced by the wedging.
  • the wedging is designed in such a way that a preload is exerted on the force sensor. This preload is particularly preferably selected so that the force connection between the force sensor and the recess wall is maintained in operational use under all operational influences, so that a hysteresis-free and linear measurement is ensured.
  • force sensors with plane-parallel surfaces can be arranged between wedge-shaped holding pieces, for example clamping wedges, which are moved against one another until the force sensor is immovably clamped between the holding pieces.
  • One of the two holding pieces is normally arranged in a stationary manner in the recess where the force sensor is to be placed, while the other holding piece is displaced in order to fix the force sensor in the recess. This can be done with the help of a clamping screw, which is supported on the measuring roller body and acts on the movable holding piece via a spacer sleeve.
  • the arrangement of several force sensors in radially movable sliding pieces, which are fixed in the recess with the aid of a wedge bar, is particularly favorable.
  • the sliding pieces can be arranged in a spacer bar and pressed radially outward with the aid of wedge-shaped retaining lugs of a clamping bar and thus clamped in the recesses.
  • the recesses can be connected to line ducts running in parallel.
  • the recesses can also be connected to a central cable recess in the measuring roller via a transverse channel.
  • the transverse channel can run in the body of the measuring roller or as an open channel on the end face of the measuring roller and then be closed with a cover.
  • the holding pieces for the force sensors or the strips in the recesses can be provided with a longitudinal rib which engages in a complementary guide groove in the body of the measuring roller.
  • the force sensor is held between two pairs of inner and outer wedge elements. This makes it possible, on the one hand, to align the force sensor in the effective direction of the compressive force to be measured. Furthermore, this arrangement makes it possible to design the holder to be geometrically symmetrical, possibly even axially symmetrical, with respect to a plane running through the installation position of the force sensor and perpendicular to the effective direction of the compressive force to be measured.
  • the wedge arrangement necessary for pretensioning the holder and the force sensor in a recess is moved into the interior of the holder by means of a translational movement.
  • the holder can be adapted to the shape of the recess into which the holder and the force sensor are to be clamped and at the same time allows the inner surfaces that directly or indirectly affect the installation orientation of the force sensor to be adapted to the desired orientation, for example these inner surfaces perpendicular to be arranged in relation to the effective direction of the compressive force to be measured.
  • the surface quality of the recess (for example the axial recess) into which the holder is inserted can be lower without tilting occurring. This eliminates the need for complex processes to produce a good surface quality, such as honing or roller burnishing.
  • the holder is designed to be geometrically symmetrical with respect to a plane which runs through the installation position of the force sensor and is arranged perpendicular to the effective direction of the compressive force to be measured.
  • a plane which runs through the installation position of the force sensor and is arranged perpendicular to the effective direction of the compressive force to be measured.
  • the holder can be designed symmetrically with respect to a plane running through the installation position of the force sensor and arranged perpendicular to the effective direction of the pressure force to be measured with respect to the materials used for the components forming the holder and / or with respect to the surface properties of these components. Tilting moments can not only be generated by geometric differences between the components provided above and below the force sensor, but also by the fact that different frictional forces arise between surfaces moving against each other above and below the force sensor due to different choice of materials or different surface properties. This can be prevented by the symmetrical design of the relevant materials or surface properties.
  • a connection which connects the first inner wedge element and the second inner wedge element in order to avoid a relative displacement in a direction which is not the effective direction of the compressive force to be measured.
  • the tilting moments to be avoided can also arise because comparable components above the force sensor and below the force sensor do not move synchronously with one another. This can be avoided if the components in question are connected to one another.
  • this connection is preferably designed in such a way that it allows the two connected components to be displaced in the effective direction of the compressive force to be measured.
  • constructive measures are preferably used to keep the force shunt as low as possible, i.e.
  • connection which connects the first outer wedge element and the second outer wedge element to avoid a relative displacement in a direction that is not the effective direction of the compressive force to be measured. This achieves the same advantages as when connecting the inner wedge elements.
  • the outer surface of the first inner wedge element and / or the outer surface of the second inner wedge element can be designed flat in the manner of a flat wedge
  • the outer surface of the first inner wedge element and / or the outer surface of the second inner wedge element is designed as a partial surface of a cone, the longitudinal axis of which runs through the installation position of the force sensor.
  • the inner surface of the first outer wedge element and / or the inner surface of the second outer wedge element is preferably formed as a partial surface of the boundary of a conical recess, the longitudinal axis of which runs through the installation position of the force sensor.
  • first inner wedge element and the second inner wedge element are partial elements of an inner sleeve produced in one piece. This offers advantages both in terms of the manufacture of the components of the holder and in terms of handling the holder when installing the force sensor.
  • the inner sleeve has a longitudinal slot between the first inner wedge element and the second inner wedge element which runs essentially perpendicular to the effective direction of the compressive force to be measured. This reduces the spring stiffness of the inner sleeve, so that the force shunt remains low.
  • the inner sleeve can be designed with a small wall thickness. With a customary inside diameter of e.g. 20 mm to 50 mm, a wall thickness of e.g. 0.3 mm to 5 mm is understood as a small wall thickness.
  • the selected wall thickness of the sleeves can also be selected depending on the sleeve length, the displacement path and the slope. It can also be 1/10 mm at the thinnest point.
  • the longitudinal slot can be designed in such a way that it has almost the entire longitudinal extent of the inner sleeve and a narrow web remains only at one or both ends as a connection between the first inner wedge element and the second inner wedge element.
  • the inner sleeve has two longitudinal slots.
  • the longitudinal slot (s) is / are preferably provided in a plane which runs through the installation position of the force sensor and is perpendicular to the effective direction of the compressive force to be measured.
  • first outer wedge element and the second outer wedge element can alternatively or additionally be sub-elements or sub-pieces of an outer sleeve produced in one piece.
  • this outer sleeve can also have at least one longitudinal slot between the first outer wedge element and the second outer wedge element which runs essentially perpendicular to the direction of action of the compressive force to be measured.
  • the inner surface of the first inner wedge element and / or the inner surface of the second inner wedge element is planar and arranged in a plane perpendicular to the effective direction of the compressive force to be measured.
  • the force sensor which is mostly planar on its upper side and lower side, to be pushed directly against the inner surfaces between the inner wedge elements.
  • a first intermediate piece with a dome can be provided between the first inner wedge element and the installation position of the force sensor and / or a second intermediate piece with a dome between the second inner wedge element and the installation position of the force sensor, the dome being the one of the one Forms inner surface of an inner wedge element facing surface and the associated inner surface of the inner wedge element is formed correspondingly.
  • the dome preferably has the geometric shape of a partial surface of a cylindrical body.
  • the outer surface of the first and / or the second outer wedge element is a partial surface of a cylindrical body. This refinement is particularly recommended in areas of application in which the force sensor is to be held in a recess, for example the axial recess of a measuring roller, by means of the holder.
  • the holder can have centering pins which engage in centering recesses in components.
  • centering pins By means of these centering pins, individual, loose components, such as the force sensor, for example, can be positioned well and precisely in relation to other components, such as the inner wedge elements or the inner sleeve.
  • the holder has an internal thread introduced into the first and second external wedge element, the longitudinal axis of which runs through the installation position of the force sensor, and a pressure screw screwed into the internal thread, which can come into contact with the first internal wedge element and the second internal wedge element and which they relative can move to the first and second outer wedge members.
  • This pressure screw can be used to produce a simple pretensioning of the holder. Due to the angled design of the respective outer surfaces in relation to the respective inner surfaces of the cooperating inner wedge and outer wedge elements, a displacement of the wedge elements relative to one another causes a displacement of the outer wedge element away from the installation position of the force sensor. In this way, the holder can be clamped in a recess.
  • the holder can have an internal thread introduced into the first and the second internal wedge element, the longitudinal axis of which runs through the installation position of the force sensor, and a tension screw which is screwed into the internal thread and whose screw head can come into contact with the first and the second external wedge element and it can move relative to the first and second inner wedge members.
  • more than one type of force sensor is provided in the measuring roller for measuring different mechanical forces.
  • the influence of the temperature can be recorded, the inventors having recognized that the influence of the temperature can be recognized by measuring a mechanical force present in the measuring roller and can then be corrected accordingly.
  • a second mechanical force is measured, which enables conclusions to be drawn about the influence of a temperature input due to the use of the measuring roller in the hot strip.
  • the measuring roller designed according to the invention enables the force component generated by the thermal input into the measuring roller body to be separated from the sum signal of the force transducer.
  • one type of force sensor is a force sensor for measuring the radial force
  • one type of force sensor is a force sensor for measuring the pretensioning force of the force sensor for measuring the radial force.
  • Tests have shown that a change in temperature on the surface of the measuring roller leads to elastic deformation of the measuring roller in such a way that the force sensors usually provided for measuring the radial force change their biasing force and thus also their linearity.
  • the inventors were also the first to recognize that with force sensors of a further type that measure a mechanical force, it is possible that, in addition to the thermal deformation of the measuring roller, which influences the measurement result of the force sensors of a first type, a relative temperature distribution over the bandwidth can be determined if several force sensors are arranged in the longitudinal direction of the measuring roller. For example, a value x in N can be used for the thermal input of 1 ° C can be measured, via which the temperature distribution can be determined by relating it to the measured mechanical force.
  • the forces introduced by the strip-shaped material under longitudinal tension are preferably measured dynamically by one type of force sensor and the forces occurring due to the deformation of the measuring roller as a result of thermal input are measured statically by another type of force sensor. In this way, the currently measured forces can be related to one another and the radial forces measured by the force sensors of one type can be corrected for the thermal input or the thermal deformation.
  • one type of force sensor can be fixed or braced, for example wedged, in the recesses. These biases are intentional and can easily be compensated for by measurement.
  • the preload can be set with a specified value.
  • force sensors with plane-parallel surfaces can be arranged between wedge-shaped holding pieces, for example clamping wedges, which are moved against one another until the force sensor is immovably clamped between the holding pieces.
  • a force sensor of the other type can preferably be fixed or braced together in a housing with the first type of force sensor in the recesses.
  • the other type of force sensor can, for example, also be fastened in a recess formed on one of the holding pieces or on one of the holding pieces with which one type of force sensor is clamped in the recess.
  • One of the two holding pieces can be arranged in a stationary manner in the recess where the force sensor is to be placed, while the other holding piece is displaced in order to fix the force sensor in the recess.
  • This can e.g. B. done with the help of a clamping screw, which is supported on the measuring roller body and acts on the movable holding piece via a spacer sleeve.
  • the force sensors of different types are arranged adjacent to one another in order to measure the direct influence from the thermal input "on site” and to apply the influence to the signal of the other force sensor as a correction.
  • a force sensor of one type with a force sensor of a further type is arranged in or on a housing or a holder, which simplifies handling during manufacture.
  • the housing can be arranged in a recess in the measuring roller.
  • the force sensor of one type can already be pre-tensioned in the housing, the force sensor of the further type being arranged on the force sensor of the first type and measuring the pre-tensioning force can.
  • the force sensor of the first type is preloaded in the housing and / or with the housing, the force sensor of the further type determining the preload on the housing, and thus the thermal input.
  • housing also encompasses mounts that do not have a closed design of a conventional housing.
  • a housing according to the invention can in particular as in the DE 10 2006 003 792 A1 , the disclosure content of which is explicitly included here by reference, be designed as described, the housing or the holder having an inner sleeve having an outer circumferential cone in which a force sensor for measuring the radial force (force sensor of one type) is arranged, and one engages with the inner sleeve has an outer sleeve which can be brought or braced with this and has an inner circumferential cone.
  • a force sensor for measuring a mechanical force counteracting the radial force can be arranged or fastened on the inner sleeve or in a recess thereof.
  • the force sensor can be glued.
  • a force sensor for measuring a mechanical force counteracting the radial force can also be arranged on the outer sleeve or in a recess thereof. It is also possible that the force sensor for a mechanical force counteracting the radial force (force sensor of a different type) is arranged in a recess of the measuring roller in the area of the place provided for the installation of the housing or the holder, without itself with the housing or the Bracket to be connected.
  • the force sensor of the other type is arranged in such a way that it lies in the force flow of the force acting on the force sensor of the first type.
  • the arrangement should be in the force flow of one type of force sensor.
  • one type of force sensor is designed as a quartz force sensor, the term quartz force sensor being understood to be a piezoelectric element on the crystal surface of which the force to be measured generates charges that serve as a measured variable.
  • Such force sensors have a high sensitivity, a high natural frequency and stability with small dimensions and make it possible to compensate initial loads without impairing the measurement result.
  • a force sensor of a (further) type is preferably designed as a strain gauge which, for example, measures the pretensioning force of a quartz force sensor that can change when the measuring roller is deformed as a result of thermal entry into the measuring roller.
  • the measuring roller according to the invention is particularly preferably used when determining properties of a metal strip during cold or hot rolling of the metal strip, in particular for determining the flatness of the metal strip.
  • Further areas of application can be further processing lines, such as re-rolling stands (skin-pass stands), strip annealing lines, galvanizing lines, stretch-bending-straightening systems!
  • the measuring roller 1 according to the invention with a pin 2 has a measuring roller body 1a designed as a solid roller.
  • a recess 3 designed as a bore parallel to the axis A of the measuring roller body 1 a is provided, from which a transverse channel 4 extends close to its end face and leads to a central cable channel 5.
  • the recess 3 is closed at the end with a cover 6 or individually with covers and contains a first force sensor 7a, a second force sensor 7b arranged next to the first force sensor 7a, a third force sensor 7c arranged next to the second force sensor 7b and one next to the third force sensor 7c arranged fourth force sensor 7d, each of which a cable 8 (for the sake of simplicity only shown as a cable) through the bore 3, the transverse channel 4 and the central channel 5 are led to the outside.
  • a cable 8 for the sake of simplicity only shown as a cable
  • Measuring roller 1 shown schematically and in perspective, with the cover 6 removed, has cable ducts 10, 11 lying opposite one another parallel to each bore 3 for lines leading outwards via the transverse duct 4 and the central duct 5.
  • the holes can, as in the Fig. 4 and Fig. 5 shown, proceed from both end faces of the roller 1 and have different depths as blind bores. This leads to the individual sensors being arranged along a helical line 20, ie staggered, and covering the entire width of the roller 1 as a whole.
  • Figs. 4 and 5 Compared to the embodiment of Figs. 1 to 3 , are the embodiments of the Fig. 4 and 5 designed in such a way that a roller body 1a designed as a full roller with grooves running on its outer circumference, which form the recesses for the force sensors 7, was covered with a casing tube 1b closing the grooves.
  • individual recesses 3 can be designed so that only one force sensor 7 is arranged in them. But it is also in the embodiment of Fig. 4 a recess 3 is provided which has a plurality of force sensors 7. This recess 3 is in the embodiment of Fig. 4 designed so that it leads from one end face of the measuring roller body 1a to the opposite end face of the measuring roller body.
  • Fig. 5 shows the arrangement of two force sensors 107a, 107b in a bore 103 of a measuring roller body 1a of a measuring roller, which in the manner of FIG Fig. 1 and 2
  • the design shown is designed as a full roll with an axial bore 103 made in the full roll.
  • the force sensors 7a, 7b shown each have a housing 120.
  • a socket 122 is installed on one side of the respective housing 120.
  • the respective force sensor 107a, 107b each has a piezo element 113 which consists of a multilayer crystal arrangement.
  • the respective piezo element 113 lies between two power transmission disks 114, 115.
  • the power transmission disks 114, 115 are connected to the housing 120 by means of elastic flanges 116.
  • the sensor surface of the force sensor 107a is the outer surface of the force transmission disk 114 that is in contact with the bore wall of the bore 103.
  • the sensor surface of the force sensor 107b is the outer surface of the force transmission disk 114 that is in contact with the bore wall of the bore 103.
  • the angle ALPHA between the end boundary line 117 and the line 118 is less than 65 °, namely approximately 45 °.
  • the bore 103 is rectangular in cross section.
  • Fig. 6 shows a schematic plan view, cut at the level of the upper bore wall, of the force sensors 107a, 107b arranged in the bore 103, with FIG Fig. 6 the line 123 is drawn in, which connects the point on the sensor surface of the first force sensor 107a, which is closest to the sensor surface of the second force sensor 107b, with the point on the sensor surface of the second force sensor 107b, which is closest to the sensor surface of the first force sensor 107a.
  • the sensor surface of the force sensor 107a is the outer surface of the force transmission disk 114 that is in contact with the bore wall of the bore 103.
  • the sensor surface of the force sensor 107b is the outer surface of the force transmission disk 114 that is in contact with the bore wall of the bore 103.
  • the measuring roller 201 shown has a measuring roller body 201a designed as a full roller, in the circumferential surface of which a plurality of recesses 203, 203a, 203b distributed over the width of the roller, into the measuring transducers, for example displacement or force or.
  • Piezo measuring transducers 207 in the form of quartz washers for measuring dynamic and quasi-static forces with cylindrical covers 234 are used.
  • the measuring transducers 207 extend between the bottom 239 of the recess 203 and the cover 234.
  • the cover 234 has a recess in which the head 236 of a clamping screw 237 is located, which engages in a threaded bore 238 of the measuring roller 201. With the aid of the clamping screw 237, the cover 234 with the measuring transducer 207 is clamped against the bottom 239 of the recess 203.
  • the cover 234 is provided with a plastic layer 240. Between the encoder 207 and the wall of the recess 203 of the roller 201 there is a gap 241 due to the different diameters of the encoder and the recess 203, which is closed to the outside by the plastic layer 240 or in some other way when the cover is inserted.
  • the gap can also be located between the encoder cover and the wall of the recess.
  • the Fig. 7 shows that the bores 203b are arranged close to one another and on a line which runs parallel to the longitudinal axis A of the measuring roller body 203b.
  • Fig. 7 shows in the form of the bores 203a, however, those which are arranged close to one another but not on a line which runs parallel to the longitudinal axis A of the measuring roller body 203b.
  • the parallel projection line that connects the point of the sensor surface of a respective force sensor 207 in a recess 203a, which is closest to the sensor surface of an adjacent force sensor 207 in an adjacent recess 203a, with the point of the sensor surface of the adjacent force sensor 207 in the adjacent recess 203a, the is closest to the sensor surface of the respective force sensor 207 in the recess 203a, connects to a plane containing the longitudinal axis A of the measuring roller body 203b, runs in these bores 203a at an angle to the longitudinal axis A of the measuring roller body 203b.
  • the measuring roller body 201a can be designed with a coating (not shown here) to form a closed circumferential surface.
  • Fig. 8 shows a holder 1101 for a force sensor 1102.
  • the holder 1101 holds the force sensor 1102 in an axial bore 1103 of the measuring roller 1104 shown in detail with an inner surface 1107 pointing towards the installation position of the force sensor 1102 and an outer surface 1108 at an angle to the inner surface 1107 and opposite the inner surface 1107.
  • the inner sleeve 1105 has a second inner wedge element 1109 which is arranged below the installation position provided for the force sensor 1102 and which is one of the installation positions of the The inner surface 1110 facing the force sensor 1102 and an outer surface 1111 which is at an angle to the inner surface 1110 and is opposite the inner surface 1110.
  • the holder 1101 also has an outer sleeve 1112.
  • the outer sleeve 1112 has a first outer wedge element 1113 with an inner surface 1114 facing the installation position of the force sensor and an outer surface 1115 at an angle to the inner surface 1114 and opposite the inner surface 1114.
  • the outer sleeve 1112 has a second outer wedge element 1116 with an inner surface 1117 facing the installation position of the force sensor 1102, with which the outer wedge element 1116 rests on the outer surface of the second inner wedge element 1109.
  • the outer wedge element 1116 has an outer surface 1118 opposite the inner surface 1117.
  • a pressure screw 1119 with an external thread is screwed into an internal thread 1120 introduced into the outer sleeve.
  • the screw-in depth of the pressure screw 1119 determines the relative position of the inner sleeve 1105 in relation to the outer sleeve 1112 and thus the degree of pretensioning of the holder 1101 in the axial recess 1103.
  • the inner sleeve 1105 and the outer sleeve 1112 have slots 1121 and 1122, respectively. These longitudinal slots 1121, 1122 reduce the spring stiffness of the inner sleeve 1105 or the outer sleeve 1112 and ensure that the force shunt remains low.
  • the compressive force to be determined which acts in the effective direction of arrow D, is therefore well introduced into force sensor 1102.
  • the outer sleeve 1112 and the inner sleeve 1105 can be produced in a first machining step by cutting turning.
  • the shape tolerance of the inner surfaces 1114, 1117 of the outer sleeve 1112 and the outer surfaces 1108, 1111 of the inner sleeve can be produced particularly precisely and thus a tilting moment-free movement of the inner sleeve 1105 relative to the outer sleeve 1112 is made possible.
  • the in the view of the Fig. 9 Laterally arranged areas of the inner sleeve 1105 are further narrowed in order to reduce the lateral wall thickness of the inner sleeve 1105. This creates in the view of the Fig. 9 Lateral free spaces 1123, 1124 between the inner sleeve 1105 and the outer sleeve 1112, which promote the introduction of force into the force sensor 1102 and further reduce the force shunt.
  • the Fig. 10 shows the top view of the force sensor 1102.
  • the cable arrangement leading to the force sensor 1102 can be clearly seen.
  • a first cable 1125 leads to the force sensor 1102 shown, while further cables 1126 lead to further force sensors, not shown, which are arranged in the same axial recess 1103.
  • the illustrated further embodiment of the holder basically has the same structure as that in FIG Figures 8 to 10 Bracket shown. Identical components have reference numbers increased by 100. However, in the inner sleeve 1205 of this second embodiment, a plurality of recesses 1226 are provided, which further reduce the lateral wall thickness of the inner sleeve 1205 and thus again lead to a lower spring stiffness and thus a lower force shunt.
  • FIGS Figures 12-14 there is shown a further embodiment of the invention which differs from that shown in FIGS Figures 8 to 10
  • the difference shown is that intermediate pieces 1327 and 1328 with domes are provided between the inner sleeve 1305 and the force sensor 1302.
  • the components shown correspond to the components in the Figures 8 to 10 illustrated elements. They are shown with a reference number increased by 200.
  • Fig. 15 shows one of the in Fig. 8 Comparable bracket 1401 shown. It differs from that in Fig. 8 Represented by a different orientation of the inner surfaces 1408, 1411 and the corresponding outer surfaces 1414, 1417 as well as by a tension screw 1429 which is screwed into an internal thread 1430 of the inner sleeve 1405.
  • the screw-in depth of the tension screw 1429 into the internal thread 1430 determines the position of the inner sleeve 1405 relative to the outer sleeve 1412 and thus the pretensioning of the holder 1401 in the axial bore 1403 of the measuring roller 1404.
  • the same components as the in Figures 8 to 10 The elements shown are identified by a reference number increased by the value 300.
  • Fig. 16 shows a further development of the embodiment according to Fig. 8 and shows a detailed view of force sensors 1102a, 1102b arranged in a recess 1103 of the measuring roller.
  • the housing 1101 or the holder holds the force sensor 1102a of a first type, which is designed to measure the radial force, in the recess 1103 of the measuring roller shown in detail.
  • the housing 1101 has an inner sleeve 1105, which consists of a first inner wedge element 1106 arranged above the installation position provided for the force sensor 1102a with an inner surface 1107 facing the installation position of the force sensor 1102a and an outer surface 1108 at an angle to the inner surface 1107 and opposite the inner surface 1107 on.
  • the inner sleeve 1105 has a second inner wedge element 1127 arranged below the installation position provided for the force sensor 1102a, which has an inner surface 1110 facing the installation position of the force sensor 1102a and an outer surface 1111 at an angle to the inner surface 1110 and opposite the inner surface 1110.
  • the housing 1101 has an outer sleeve 1112, which has a first outer wedge element 1113 with an inner surface 1114 facing the installation position of the force sensor 1102a and an outer surface 1115 at an angle to the inner surface 1114 and opposite the inner surface 1114. Furthermore, the outer sleeve 1112 has a second outer wedge element 1120 with an inner surface 1117 facing the installation position of the force sensor 1102a, with which the outer wedge element 1120 rests on the outer surface of the second inner wedge element 1127. Furthermore, the outer wedge element 1120 has an outer surface 1116 opposite the inner surface 1117.
  • a pressure screw 1119 with an external thread is screwed into an internal thread introduced into the outer sleeve 1112.
  • the screw-in depth of the pressure screw 1119 determines the relative position of the inner sleeve 1127 in relation to the outer sleeve 1112 and thus the degree of preload of the housing 1101 in the recess 1103.
  • the force sensor 1102b is arranged in the inner sleeve 1127 in a recess thereof. The preload force can be measured with the force sensor 1102b.
  • the force sensor 1102a for measuring the radial force is preloaded, it being possible to determine the magnitude of the preload by means of the force sensor 1102b.
  • the deflection of the strip under longitudinal tension introduces radial forces into the measuring roller, which elastically deform the outer shell of the measuring roller.
  • the "membrane-shaped" web above the recess 1103 is displaced in the radial direction, which can be determined by the force sensor 1102a, which can be configured as a piezoelectric force sensor. Thermal stresses that arise due to a temperature gradient also generate a path change in the radial direction on the web lying outward in the circumferential direction above the recess 1103, which is opposite to the radial force.
  • the radial force values of the force sensors 1102a can be corrected with the aid of the pretensioning force currently measured.
  • the force sensors 1102a, 1102b arranged in pairs closely spaced from one another are inserted into the housing 101 having the inner sleeve 1127 and the outer sleeve 1112 and then positioned in the recess 1103 of the measuring roller 1 and clamped in their position.
  • Figure 17 shows a detailed view of force sensors 1102a and 1102b arranged in a recess 1103 of the measuring roller 1 for a Figure 16 different embodiment.
  • the structure of the embodiment as shown in Figure 17 is shown essentially corresponds to the structure of the in Figure 16 embodiment shown.
  • the embodiment of FIG. 10 differs only with regard to the arrangement and design of the force sensors 1102a and 1102b Figure 17 from the force sensors 1102a and 1102b of the Figure 16 .
  • the force sensor 1107a is designed as a piezoelectric force sensor, it being somewhat shorter in the radial direction than the force sensor 1102a of FIG Fig. 16 .
  • the force sensor 1107b which is designed as a statically measuring force sensor, in particular as a strain gauge, is provided as a force sensor of the other type.
  • Fig. 18 shows the forces applied to the measuring roller by a metal band that is partially wrapped around the measuring roller and is under tension.
  • the quartz force sensors arranged in recesses in the measuring roller generate an electrical charge. This is directly proportional to the force applied to the quartz.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Claims (9)

  1. Rouleau de mesure (1, 201) pour déterminer une propriété d'un produit en forme de bande, notamment une bande métallique, guidé par le rouleau de mesure (1, 201), avec
    - un corps du rouleau de mesure (1a, 201a) avec une surface circonférentielle,
    - au moins un évidement (3, 103, 203, 203a, 203b) dans le corps du rouleau de mesure (1a, 201a), qui est disposé à une distance de la surface circonférentielle ou mène vers l'intérieur du corps du rouleau de mesure (1a, 201a) à partir de la surface circonférentielle et
    - avec un premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402), qui est disposé dans l'évidement (3, 103, 203, 203a, 203b), et un deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402), qui est disposé dans l'évidement (3, 103, 203, 203a, 203b) ou un autre évidement (3, 103, 203, 203a, 203b) adjacent à l'évidement (3, 103, 203, 203a, 203b),
    le premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) présentant une surface de capteur et le premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) pouvant générer un signal de capteur lors du changement de la position de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) et le deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) présentant une surface de capteur et le deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) pouvant générer un signal de capteur lors du changement de la position de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402),
    caractérisé en ce que
    soit le premier capteur de force est disposé dans l'évidement à côté du deuxième capteur de force et la surface de capteur du premier capteur de force jouxte directement la surface de capteur du deuxième capteur de force,
    soit le premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) est disposé si près du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) que l'angle (ALPHA) entre une ligne de limitation d'extrémité (117) s'étendant dans le sens radial du rouleau de mesure (1, 201), qui coupe le point de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402), et une ligne (118), qui
    • s'étend dans le plan, qui comprend la ligne de limitation d'extrémité (117) et la ligne (123), qui relie le point de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) au point de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402), et
    • coupe la ligne de limitation d'extrémité (117) avec la surface circonférentielle au point d'intersection (119) de la ligne de limitation d'extrémité (117), et
    • coupe le point de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402),
    est inférieur à 65°, la ligne (123), qui relie le point de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche qui est le plus proche de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) au point de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) qui est le plus proche de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402), passant dans un angle de > 10° par rapport à un plan, qui est perpendiculaire à l'axe longitudinal du rouleau de mesure (1, 201), et le rouleau de mesure (1, 201) étant constitué comme rouleau plein et présentant une surface circonférentielle fermée,
    • soit tous les évidements (3, 103, 203, 203a, 203b) prévus dans le corps du rouleau de mesure étant constitués de telle sorte qu'aucun évidement (3, 103, 203, 203a, 203b) ne mène de l'évidement à la surface circonférentielle,
    • soit chez les formes d'exécution, chez lesquelles l'évidement (3, 103, 203, 203a, 203b) respectif présente un évidement (3, 103, 203, 203a, 203b) menant en direction de la surface circonférentielle, de tels évidements sont fermés par un élément de fermeture.
  2. Rouleau de mesure selon la revendication 1, caractérisé en ce que le corps du rouleau de mesure est un rouleau plein qui s'étend le long d'un axe longitudinal, et l'évidement (3, 103, 203, 203a, 203b) est parallèle à l'axe longitudinal.
  3. Rouleau de mesure selon la revendication 1 ou 2, caractérisé en ce que l'évidement (3, 103, 203, 203a, 203b) présente une ouverture qui est disposée sur une face avant du corps du rouleau de mesure.
  4. Rouleau de mesure selon l'une des revendications 1 à 3, caractérisé en ce qu'une multitude de capteurs de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402), qui présentent respectivement une surface de capteur et peuvent respectivement générer un signal de capteur lors du changement de la position de leur surface de capteur respective, sont disposés dans l'évidement (3, 103, 203, 203a, 203b) ou dans des évidements (3, 103, 203, 203a, 203b) adjacents et
    soit la surface de capteur d'un capteur de force jouxte directement la surface de capteur d'un capteur de force adjacent,
    soit le capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif est disposé si près du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent que l'angle (ALPHA) entre une ligne de limitation d'extrémité (117) s'étendant dans le sens radial du rouleau de mesure (1, 201), qui coupe le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif qui est le plus proche de la surface de capteur du capteur de force adjacent, et une ligne (118), qui
    • s'étend dans le plan, qui comprend la ligne de limitation d'extrémité (117) et la ligne (123), qui relie le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent au point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif, et
    • coupe la ligne de limitation d'extrémité (117) avec la surface circonférentielle au point d'intersection (119) de la ligne de limitation d'extrémité (117), et
    • coupe le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif,
    est inférieur à 65°.
  5. Rouleau de mesure selon la revendication 4, caractérisé en ce que, pour chaque capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) dans l'évidement (3, 103, 203, 203a, 203b)
    soit la surface de capteur du capteur de force jouxte directement la surface de capteur d'un capteur de force adjacent,
    soit le capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif est disposé si près du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent que l'angle (ALPHA) entre une ligne de limitation d'extrémité (117) s'étendant dans le sens radial du rouleau de mesure (1, 201), qui coupe le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent, et une ligne (118), qui
    • s'étend dans le plan, qui comprend la ligne de limitation d'extrémité (118) et la ligne (123), qui relie le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent au point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif, et
    • coupe la ligne de limitation d'extrémité (117) avec la surface circonférentielle au point d'intersection (119) de la ligne de limitation d'extrémité (117), et
    • coupe le point de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) adjacent qui est le plus proche de la surface de capteur du capteur de force (7, 7a, 7b, 107a, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) respectif,
    est inférieur à 65°.
  6. Rouleau de mesure selon l'une des revendications 1 à 5, caractérisé en ce que le premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) et le deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) sont respectivement un capteur de force piézoélectrique, une jauge de contrainte ou un capteur de force optique.
  7. Rouleau de mesure selon l'une des revendications 1 à 6, caractérisé en ce que le premier capteur de force est installé sous précontrainte dans l'évidement (3, 103, 203, 203a, 203b).
  8. Procédé de détection d'une propriété d'un produit en forme de bande, notamment une bande métallique, guidé par le rouleau de mesure (1, 201), caractérisé en ce que le produit en forme de bande est guidé par un rouleau de mesure (1, 201), selon l'une des revendications 1 à 7, de telle sorte qu'il entoure partiellement le rouleau de mesure (1, 201), et en ce que
    - le signal de capteur, que le premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) génère suite au changement de la position de la surface de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402), dû à la force de compression produite par l'enroulement, est acheminé à une unité d'analyse et
    - le signal de capteur, que le deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402) génère suite au changement de la position de la surface de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402), dû à la force de compression produite par l'enroulement, est acheminé à une unité d'analyse et
    - l'unité d'analyse génère une information en fonction du signal de capteur du premier capteur de force (7a, 107a, 207, 1102, 1102a, 1102b, 1302, 1402) et du signal de capteur du deuxième capteur de force (7b, 107b, 207, 1102, 1102a, 1102b, 1302, 1402).
  9. Utilisation d'un rouleau de mesure (1, 201) selon l'une des revendications 1 à 7 pour déterminer une propriété d'un produit en forme de bande, notamment une bande métallique, guidé par le rouleau de mesure (1, 201), notamment pour déterminer la planéité du produit en forme de bande.
EP19816688.6A 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure Active EP3790675B1 (fr)

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DE102018009611.5A DE102018009611A1 (de) 2018-12-11 2018-12-11 Messrolle zum Feststellen einer Eigenschaft eines über die Messrolle geführten bandförmigen Guts
PCT/EP2019/084051 WO2020120329A1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure

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EP21192579.7A Division-Into EP3936249A1 (fr) 2018-12-11 2019-12-06 Rouleau de mesure pour déterminer une propriété d'un produit en forme de bande guidé sur le rouleau de mesure

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DE102021005558B3 (de) 2021-11-09 2023-03-23 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Messrolle zum Feststellen einer Eigenschaft eines über eine Messrolle geführten bandförmigen Guts sowie Verwendung einer solchen Messrolle
DE102022125376A1 (de) 2022-09-30 2024-04-04 VDEh-Betriebsforschungsinstitut Gesellschaft mit beschränkter Haftung Messrolle zum Messen eines Bandzugs, Vorrichtung und Verfahren

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CN113382809A (zh) 2021-09-10
EP3790675A1 (fr) 2021-03-17
WO2020120329A1 (fr) 2020-06-18
JP2022510993A (ja) 2022-01-28
EP3936249A1 (fr) 2022-01-12
DE102018009611A1 (de) 2020-06-18
JP7549578B2 (ja) 2024-09-11

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