+

WO2016165929A1 - Dispositif de forage ayant des moyens de centrage - Google Patents

Dispositif de forage ayant des moyens de centrage Download PDF

Info

Publication number
WO2016165929A1
WO2016165929A1 PCT/EP2016/056595 EP2016056595W WO2016165929A1 WO 2016165929 A1 WO2016165929 A1 WO 2016165929A1 EP 2016056595 W EP2016056595 W EP 2016056595W WO 2016165929 A1 WO2016165929 A1 WO 2016165929A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
shaft
guide elements
piston
boring device
Prior art date
Application number
PCT/EP2016/056595
Other languages
English (en)
Inventor
Kevin Nedzlek
Original Assignee
Walter Ag
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.)
Filing date
Publication date
Application filed by Walter Ag filed Critical Walter Ag
Publication of WO2016165929A1 publication Critical patent/WO2016165929A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/02—Boring bars
    • B23B29/027—Steadies for boring bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/02—Boring bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2229/00—Details of boring bars or boring heads
    • B23B2229/04—Guiding pads

Definitions

  • the present invention is related to a boring device having a cutting head and a shaft defining a longitudinal axis, the boring device further comprising a generally cylindrical guide section including guiding means for guiding the shaft in a guide hole during boring.
  • Boring devices of the afore mentioned kind are sometimes required in situations where a hole to be machined needs to be aligned with respect to another hole already provided in a separate member arranged at some distance to the new hole to be machined.
  • the already existing hole in a first member is used as a guide hole for guiding the shaft of the boring device upon machining a properly aligned hole in a second member.
  • a boring device comprising a cylindrical shaft of a sufficient length and having an appropriate diameter adapted to the diameter of the guide hole would be suited for that purpose.
  • the shaft diameter of the boring device would only fit to a single diameter of the guide hole.
  • the diameter of the guide section is defined by a number of separate guiding pads distributed about the circumference of the guide section. This allows to adapt the diameter of the boring device to the diameter of the guide hole by using appropriate guiding pads, which might be exchanged if required.
  • the shaft diameter of the guide section must always be smaller than the diameter of the guide hole.
  • boring devices have been developed which provide one or several guiding pads that are radially moveable on said guide section and spring biased in the radial outward direction in order to adapt the diameter of the guide section to the diameter of the guide hole.
  • spring biased guiding elements would allow the guide section to be arranged in the guide hole in an position offset from the central axis, while all guide pads may still be in contact with the wall of the guide hole. This may then cause that the center of the hole to be machined is radially offset from the center of the guide hole.
  • the tolerances and deviations from preceding holes may even add up to larger tolerances when a succession of holes is machined with each preceding hole being used as the guide hole for the next following hole.
  • a boring device as defined in the preamble of claim 1 , which is further adapted to produce holes with small tolerances and which are properly centered with respect to a guide hole potentially having larger tolerances or even offset from an envisaged position of a new hole to be machined or an already prepared hole with smaller diameter to be reamed to a final diameter.
  • a plurality of radially moveable guide elements arranged within said shaft and comprising guiding pads exposed on the periphery of the guide section,
  • the guide elements or the guiding pads thereof are always defining the same single diameter and radius with respect to a common center. If a particular guide hole has a larger diameter than the hole to be machined, the guide elements will be extended and still ensure that the shaft is centered within the respective hole and the center of the hole to be machined is properly aligned with the center of the guide hole. The same holds for any guide hole which may be narrower than the hole to be machined, provided that the guide section of the shaft still fits into the guide hole.
  • One option to provide a simultaneous radial outward movement of the guide elements by the same amount is the engagement of a centrally arranged piston with guide elements arranged around the periphery of the piston, wherein the piston and the guide elements are each comprising surfaces acting as cooperating wedge surfaces arranged to push the guide elements simultaneously radially outward once the piston is moved towards a first direction which will here be indicated as the forward direction.
  • wedge surfaces there is meant that the surfaces of the piston and the guide element which are in abutting contact with each other extend at an angle with respect to the shaft axis, so that any axial movement of the piston when engaging a guide element is transferred into a radial movement of the guide element and vice versa, provided that the angle between the shaft axis and the wedge surfaces is sufficient to effect the wedge action both ways. Accordingly, once any of the guide elements engages the wall of a guide hole and is on its radial inner (wedge-) side in contact with the piston, it will stop the piston from any further axial forward movement and thereby also stop any radial outward movement of other guide elements.
  • the guide elements will be pushed radially inward by engaging the wall of the hole, whereupon due to the engagement between the wedge surfaces of the guide elements and the piston, the latter will be pushed back in the axially rearward direction.
  • the guide elements may have proper ramping surfaces in order to be entered into a narrower hole.
  • an axial bore may be arranged within said shaft receiving an axially moveable actuating piston, said axially moveable actuating piston being spring biased and engaging a radially inner surface of the radially moveable guide elements for urging the same radially outward upon axial movement of the piston in a first axial or forward direction.
  • the axially moveable actuating piston engages a radially inner surface (slightly tilted with regard to the axis) of the guide elements and urges the same radially outwards into contact with the wall of the guide hole whereupon any further axial movement of the piston is blocked because the guide elements cannot move radially outward any further.
  • the piston which is an engagement with the guiding elements and the bore receiving the piston in an axially moveable manner are properly centered with respect to the hole.
  • the shaft receiving the piston in the corresponding central bore therein is properly centered and is kept in this centered position upon rotation of the shaft, during which the guiding elements or corresponding guiding pads defining the outer surface of the guiding elements are kept in contact with the wall of the guide hole.
  • the piston and thus the shaft are always centered with respect to the guide hole.
  • the piston and the bore receiving the piston are centrally disposed within said shaft at the guide section and the piston does not have any substantial radial play. Rather, in the preferred embodiment, the piston is in a tight slip fit engagement with the centrally arranged bore in the shaft receiving the piston.
  • the diameter of the guide section may be varied and adapted to the diameter of the guide hole, but at the same time the radial outer surfaces of the guide elements defining the radial outer diameter of the guide section by will always be the same with respect to the same central axis. Therefore, once the guide elements are in contact with the wall of the guide hole, the axis of the boring device will always coincide with the axis of the guide hole.
  • the shaft and thus the tool axis and the boring head arranged at the front end of the shaft are always kept centered with regard to the center of the guide hole which allows a very precise machining of the hole, because the shaft is continuously supported and prevented from being bent due to cutting forces acting on the cutting head.
  • the radial retraction or repelling of the guide elements will be effected either by the wall of the guide hole or by means of additional spring elements acting on the guide elements, which will be described later.
  • At least three guide elements are provided at substantially the same axial position and angularly offset with respect to each other about the axis or circumference of the shaft.
  • the guide elements are distributed around the periphery of the shaft guide section at about equal angular spacing, which does not only hold for the provision of three guide elements but principally for any number of guide elements such as four or six.
  • the angular spacing between any adjacent two guide elements is less than 100 degrees and no special care needs to be taken to provide an exactly equal angular spacing between all adjacent guide elements.
  • the axial bias of the piston is provided by means of a spring, in particular a helical compression spring received within a bore provided for the piston or adjoining such bore.
  • the piston and the guide elements are defining pairs of mutually abutting actuating surfaces, each pair of abutting actuating surfaces extending in a plane which is perpendicular to a sectional plane including the shaft axis wherein the plane of the actuating surfaces is tilted with respect to the shaft axis by an angle a from between 10 and 70 degrees when measured in said sectional plane including the shaft axis.
  • the angle a is in the range from between 15 and 60 degrees. Due to the angle a between the actuating surfaces and the shaft axis, the piston exerts a wedge- action on the guide elements when axially moved towards a first direction.
  • a radial outward movement of the guide elements due to the wedge-action of the central piston is not only limited by the walls of the guide hole but in addition spring members may be provided exerting a radially inward force, i.e. towards the axis of the shaft, wherein the spring elements urging the guide elements radially inward are designed such as to move the guide elements to a radially inward position in which none of the guide elements projects beyond the peripheral surface of the guide section, i. e. the shaft portion of the guide section.
  • the latter may for instance have some axially extending slots for receiving plate like guide elements extending through said slots in a radially moveable manner, when acted upon by the piston and spring elements.
  • the piston may comprise a cylindrical outer surface with intermediate axially extending grooves, the bottom of said grooves defining an actuating surface tilted with respect to the shaft axis for abutting the cooperating actuating surface of the guide element.
  • the abutting actuating surfaces of the piston and the guide elements are continuously in contact with each other wherein the axial position of the piston defines the outer diameter of the guide section which in turn is limited by the guide hole diameter determining the amount by which the radial outer surfaces of the guide elements may extend beyond the cylindrical outer surface of the shaft of the guide section.
  • the piston is received in a tight slip fit engagement within the respective bore of the shaft which ensures that the centered position of the piston which is obtained due to the engagement of the guide elements with the wall of the hole and the engagement of the inner actuating surfaces of the guide elements with the corresponding actuating surfaces of the piston, is also transferred into a correspondingly centered position of the shaft. Nevertheless, the piston is still axially moveable in order to be able to adapt the diameter defined by the radial outer surface of the guide elements to any particular diameter of the guide hole.
  • the radial movement of the guide elements more precisely the maximum extension of the radially outer surface of the guide elements from the cylindrical peripheral surface of the guide section of the shaft should be limited to at most 10% and preferably at most 5% of the radius of the guide section of the shaft.
  • the guide elements are plate-shaped elements which are partly received in axially extending slots in the peripheral wall of the guide section surrounding the bore and piston of the guide section.
  • the radial inner edge surface of the plate-like guide element extends into the axially extending grooves in the peripheral wall of the piston for engaging the cooperating actuating surface at the bottom of said grooves.
  • the boring device comprises a push rod received in the same or another adjoining bore of said shaft as said bore receiving the piston, wherein the push rod is adapted to engage and adjust a loading spring for biasing said pistons axially and, by means of the tilted actuating surfaces radially against the guide elements.
  • the loading spring ensures some flexibility of the piston and guide elements upon entering a guide hole or upon rotation in a not perfectly round guide hole.
  • the shaft may include a return spring received in a further bore of said shaft for urging the piston from the side opposite the loading spring and against the direction A when the thrust of the push rod on the loading spring is released.
  • the loading spring upon retracting the push rod, the loading spring will be released and the piston will be forced back under the action of the return spring, wherein the additional spring elements for the guide elements will retract the guide elements radially inward and out of engagement with the wall of a guide hole so that the radial outer surfaces of the guide elements, which may be provided with a particular pad material, are retracted into the slots in the peripheral wall of the guide section out of contact with the wall of the guide hole and preferably do no longer extend radially beyond the periphery of the guide section.
  • the boring device may be retracted from the guide hole or further advanced into the next guide hole for boring or reaming another hole, wherein the previously machined hole may now act as a guide hole for the next boring operation.
  • the return spring is designed for overcoming the biasing force of the loading spring only if the push rod is sufficiently retracted towards an inactive position because during operation the loading spring is intended to keep the guide elements or radially outer pads thereof continuously in contact with the wall of the guide hole.
  • the diameter of the guide section of the shaft is between 90% and 99% of the cutting diameter of the cutting head, which in turn means that any gap between the peripheral wall of the guide section and the guide hole wall is to be bridged by the guide elements projecting radially outward through slots provided in the peripheral wall of the guide section.
  • the guiding pads or guide elements may have an extension from the peripheral surface of the guide section of the shaft which is between 0.5% and 5% of the guide section diameter.
  • the loading springs and the biasing elements for urging the guide elements towards the shaft axis are designed such that upon pushing the push rod into an active position towards the piston in the forward direction, the force exerted by the piston on the guide elements urging them radially outward exceeds the radially inward force from the spring elements urging the guide elements radially inward.
  • the boring device of the present invention may of course be designed as an ordinary drill having helically extending chip flutes
  • the cutting head of a preferred embodiment comprises at least one recess for receiving a cutting insert.
  • Such a design of course limits the diameter of the boring device to a minimum of at least 12 mm because it is otherwise difficult to provide cutting inserts with maximum dimensions of less than 8 mm.
  • Figure 1 shows side views and a front view of a boring device according to the present invention.
  • Figure 2 shows a cross-section through a shaft and a cutting head including the axis of the tool.
  • Figure 3 shows a perspective view on the cutting head and guide section of the tool according to the invention.
  • Figure 4 shows a perspective view of the inner elements of the shaft and guide section, namely the piston, the guide elements, the push rod, the loading spring and a return spring.
  • Figure 5 shows the piston and associated members of another embodiment of a boring device.
  • Figure 6 shows a shaft and guide section including the piston and guide elements shown in figure 5.
  • Figure 1 a is a front view from the cutting head side on a boring device 100, the side view of which is shown in figures 1 (b) and 1 (c), respectively.
  • the complete tool comprises a cutting head 20, a shaft 30 including a guide section 10 and a flange 60 on the rear end of the shaft 30 to be mounted within an adapter 70 which may be coupled to the spindle of a machine tool.
  • Guide elements 4 are visible in the guide section 10, wherein the shaft portion of the guide section 10 comprises axially and radially extending slots 16.
  • the wall of a guide hole is indicated by 23 and the wall of a hole to be reamed is indicated by 24.
  • FIG 2 is a cross-section through a boring device according to the present invention taken along a plane including the axis 50 of the tool.
  • the shaft 30 and the guide section 10 have substantially the same outer diameter d, which is slightly smaller than the diameter D, which is defined by twice the radius of the cutting edge of a cutting insert 22 received in a corresponding recess 21 of the cutting head 20.
  • the cutting insert 22 or the cutting edge thereof define a maximum outer diameter of the hole to be machined.
  • the diameter of the guide hole may be about the same as the diameter of the hole to be machined. In the present case, no cutting elements are provided in the center of the cutting head, which means, that the present tool is designed for reaming the wall of an already existing central hole to the desired diameter.
  • the guide section is formed by a portion of the shaft adjacent the cutting head 20.
  • the guide section is comprised of a shaft portion 17 which may be integral with the major part of the cutting head 20 wherein the shaft portion 17 comprises a central inner bore 2 having adjacent (central) bore sections 2' and 2" of a smaller diameter than the bore 2.
  • the bore 2 receives a substantially cylindrical piston 3 having three longitudinal grooves 18 extending along and within the outer cylindrical surface of the piston and which are clearly visible in the embodiment of figure 5.
  • the cylindrical wall of piston 3 is in tight slip fit engagement with the wall of bore 2.
  • Plate-shaped guiding elements 4 are received within said grooves 18, wherein the section of figure 2 is taken along a plane including the axis 50 and intersecting the bottom 7 of one of the grooves 18 as well as the radial inner edge surface 6 of the guide elements 4.
  • the radial outer edge face of the guide elements 4 is cladded with a pad 5 having a desired wear resistance and designed for low friction with the wall of a guide hole.
  • the bore 2 provides a sufficient axial stroke space for the piston 3 and a loading spring 1 1 is provided in another bore 2' having a narrower diameter than the bore 2 and adjoining the upper end of the bore 2. On the opposite side another bore 2" of a narrower diameter is provided for receiving a return spring 12.
  • the shaft portion 17 of the guide section 10 may be connected to the upper shaft portion 30 by means of a thread 19.
  • the guide portion 10 also comprises a number of axi- ally and radially extending slots 16 for receiving the plate-like guide elements 4.
  • the sectional plane of figure 2 is intersecting a corresponding slot 16 receiving the guide element 4.
  • a push rod 9 the lower head of which is an engagement with a loading spring 11 in the bore 2', extends up through another narrower central bore of the shaft and may be actuated via the spindle driving the respective tool, in particular by means of hydraulic or pneumatic pressure.
  • the push rod 9 Upon finishing a hole by machining or reaming and by arranging the guide section in a corresponding guide hole during machining, the push rod 9 will be retracted and thus the loading spring 1 1 is released and the return spring 12 thereby pushes the piston 3 upward towards its uppermost position.
  • a retention pin 13 having a lateral (radial) spring action (cf. figures 5 and 6) is placed and designed such as to exert a force on the guiding elements 4 towards the center of the tool, i.e. towards the axis 50 as long as the surface of the pads 5 project over the peripheral surface of the peripheral surface of the shaft portion 17 of the guide section.
  • the shaft may retracted from the guide hole or be further advanced there through.
  • the cutting head may be inserted through another guide hole, which may even be the just machined hole until the guide section and in particular the guide elements 4 thereof are axially positioned within the new guide hole (not shown), while the cutting insert 22 may be in engagement with another member to be machined.
  • the push rod 9 is pushed downward for biasing the loading spring 1 1 , wherein the loading spring 1 1 and the return spring 12 are designed such that the force of the return spring 12 may easily be overcome when pushing the rod 9 downward in order to compress the loading spring 1 1 . Therefore, the loading spring 1 1 pushes the actuating piston 3 downward, wherein, by engagement of the wedge surfaces 6, 7 of the guide elements 4 and the bottom 7 of the piston grooves, the guide elements 4 are pushed radially outward until all pads engage the wall of the guide hole.
  • all guide elements 4 have the same shape and dimensions and the same axial position so that each of the guide elements 4 is engaged by the piston or better to say the bottom surface 7 of the groove 18 thereof, so that each of the guide elements 4 is moved radially outward by the same amount, until the pads abut the wall of the guide hole.
  • the retention pins will be slightly compressed thereby.
  • the radial movement of the guide elements 4 is rather limited, i.e. there is only a little radial play between the peripheral surface of the guide section 10 and the wall of the corresponding guide hole which is to be bridged by the guide elements. This means, that the guide elements 4 and pads 5 thereof need to be pushed out of the slots 16 only by a rather small amount in the order of for instance 1 mm or less before engaging the wall of the guide hole.
  • the axial ends of the pads 5 are chamfered, so that even in a situation where the guide section enters a guide hole which may be slightly narrower than the diameter defined by twice the radius of the pads 5 while the pads are not completely retracted with the slots of the shaft portion, the pads may still be inserted with the guide hole due to their chamfered ends and in the course of inserting the guide portion 10 into the guide hole, the pads 5 and guide elements 4 will be pushed inwardly and in turn push the piston 3 upward and rearward against the loading spring 1 1.
  • the proper function of the device in such a situation will also depend on the slope of the wedge surfaces 6 and 7, respectively, which should be sufficiently large in order to allow the piston 3 to be pushed back against the loading spring 11 once the pads and guide elements 4 are pressed radially inward due to the engagement of the pads 5 with a narrow guide hole.
  • Figure 3 is just an enlarged perspective view of the cutting head and adjacent guide portion 1 1 of the embodiment shown in figures 1 and 2, respectively.
  • the guide elements 4 including the pads 5 thereof are received in slots 16 extended through the wall of the shaft portion 17 of the guide section 10, which are better visible in figure 6.
  • the cutting head comprises a recess 21 for receiving a cutting insert 22 and leaving also some space in front of the cutting face of the cutting insert 22 for receiving chips generated by the cutting insert 22 during a machining action, i. e. during chip forming boring or reaming.
  • Figure 4 shows again the elements inside the guide section 10.
  • the guide elements 4 are in this case designed somewhat different from the plate-like guide elements 4 disclosed in figure 5 and 6, respectively. Nevertheless, the principal structure of the guide elements 4 is the same in both cases in that they are received and guided within slots 16, 18 and will be pushed radially outward through the slots 16 by the mutually engaging wedge surfaces 6, 7 once the loading spring 1 1 is compressed.
  • the piston 3 has a substantially cylindrical peripheral surface with axially extending grooves 18 for receiving the radial inner ends of the guide elements 4 and for engaging the inner edge surfaces 6 thereof by the corresponding bottom surface 7 of the grooves 18.
  • the cooperating faces of the piston and guide element are thus the same and act in the same way as in the embodiment of figures 5 and 6.
  • the guide pads and pad holders which may be screwed onto a slide which in turn is received in a groove 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

La présente invention se rapporte à un dispositif de forage (100) ayant une tête de coupe (20) et un arbre (30) définissant un axe longitudinal (50) et comprenant une section de guidage généralement cylindrique (10) comprenant des moyens de guidage destinés à guider l'arbre (30) dans un trou de guidage pendant l'usinage. Afin de fournir un dispositif de forage tel que défini dans le préambule de la revendication 1, qui est en outre conçu pour produire des trous usinés présentant de faibles tolérances et qui sont correctement centrés par rapport à un trou de guidage présentant potentiellement des tolérances plus importantes ou même décalés par rapport à une position envisagée d'un nouveau trou qui doit être usiné, ou un trou déjà préparé ayant un diamètre plus petit qui doit être fraisé à un diamètre final, la présente invention comprend une pluralité d'éléments de guidage radialement mobiles (4) disposés dans la section de guidage dudit arbre et comportant des surfaces de guidage exposées à la périphérie de la section de guidage (10), ainsi que des moyens permettant un mouvement radial simultané des éléments de guidage (4) dans la même direction radiale et de la même importance lors de n'importe quel mouvement radial forcé d'au moins un élément de guidage desdits éléments de guidage (4).
PCT/EP2016/056595 2015-04-17 2016-03-24 Dispositif de forage ayant des moyens de centrage WO2016165929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562148955P 2015-04-17 2015-04-17
US62/148,955 2015-04-17

Publications (1)

Publication Number Publication Date
WO2016165929A1 true WO2016165929A1 (fr) 2016-10-20

Family

ID=55642452

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/056595 WO2016165929A1 (fr) 2015-04-17 2016-03-24 Dispositif de forage ayant des moyens de centrage

Country Status (1)

Country Link
WO (1) WO2016165929A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018154557A1 (fr) * 2017-02-21 2018-08-30 Iscar Ltd. Outil d'usinage de trous et mécanisme de réglage de patin de guidage s'y rapportant
CN109079247A (zh) * 2018-11-01 2018-12-25 昆山欧思克精密工具有限公司 一种通用型超精铰刀
CN109590495A (zh) * 2018-12-08 2019-04-09 焦作大学 一种加工凸轮轴底孔的智能导条式复合阶梯镗刀
CN112384320A (zh) * 2018-05-28 2021-02-19 荷兰皇家航空公司 内轴机加工工具

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954034A (en) * 1930-10-15 1934-04-10 Van Norman Machine Tool Co Equalizing boring guide
US2189604A (en) * 1937-07-17 1940-02-06 Van Norman Machine Tool Co Boring bar guiding mechanism
US2196827A (en) * 1937-11-05 1940-04-09 Van Norman Machine Tool Co Tool guide for boring machines
US2207861A (en) * 1938-07-22 1940-07-16 Van Norman Machine Tool Co Boring bar guiding mechanism
DE1086110B (de) * 1956-10-19 1960-07-28 Heller Geb Bohrkopf zum Aufbohren von Loechern, insbesondere Rohren
DE1109488B (de) * 1956-07-31 1961-06-22 Friedrich Nagel Bohrstange zum Aufbohren langer Werkstueckbohrungen
DE19720823A1 (de) * 1997-05-16 1998-11-19 Heller Geb Gmbh Maschf Werkzeug mit einem Grundkörper sowie Verfahren zur Bearbeitung von Bohrungen in einem Werkstück unter Verwendung eines solchen Werkzeuges

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1954034A (en) * 1930-10-15 1934-04-10 Van Norman Machine Tool Co Equalizing boring guide
US2189604A (en) * 1937-07-17 1940-02-06 Van Norman Machine Tool Co Boring bar guiding mechanism
US2196827A (en) * 1937-11-05 1940-04-09 Van Norman Machine Tool Co Tool guide for boring machines
US2207861A (en) * 1938-07-22 1940-07-16 Van Norman Machine Tool Co Boring bar guiding mechanism
DE1109488B (de) * 1956-07-31 1961-06-22 Friedrich Nagel Bohrstange zum Aufbohren langer Werkstueckbohrungen
DE1086110B (de) * 1956-10-19 1960-07-28 Heller Geb Bohrkopf zum Aufbohren von Loechern, insbesondere Rohren
DE19720823A1 (de) * 1997-05-16 1998-11-19 Heller Geb Gmbh Maschf Werkzeug mit einem Grundkörper sowie Verfahren zur Bearbeitung von Bohrungen in einem Werkstück unter Verwendung eines solchen Werkzeuges

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018154557A1 (fr) * 2017-02-21 2018-08-30 Iscar Ltd. Outil d'usinage de trous et mécanisme de réglage de patin de guidage s'y rapportant
US10201861B2 (en) 2017-02-21 2019-02-12 Iscar, Ltd. Hole machining tool and guide pad adjustment mechanism therefor
RU2753933C2 (ru) * 2017-02-21 2021-08-24 Искар Лтд. Инструмент для обработки отверстий и механизм регулировки направляющей пластины для него
CN112384320A (zh) * 2018-05-28 2021-02-19 荷兰皇家航空公司 内轴机加工工具
CN112384320B (zh) * 2018-05-28 2024-03-01 荷兰皇家航空公司 内轴机加工工具
CN109079247A (zh) * 2018-11-01 2018-12-25 昆山欧思克精密工具有限公司 一种通用型超精铰刀
CN109590495A (zh) * 2018-12-08 2019-04-09 焦作大学 一种加工凸轮轴底孔的智能导条式复合阶梯镗刀

Similar Documents

Publication Publication Date Title
WO2016165929A1 (fr) Dispositif de forage ayant des moyens de centrage
FI77598C (fi) Verktygshaollare foer borr- och mejselverktyg.
EP2979795B1 (fr) Dispositif de coupe de forage
CN107000074B (zh) 使孔锯可释放地联接到钻轴的系统
US7896590B2 (en) Cutter for engagement with an arbor
SE510533C2 (sv) Verktyg för skärande bearbetning
US5797802A (en) Die head
NO881697L (no) Verktoeyenhet, verktoeydeler og fremgangsmaate for sammensetting av delene.
KR102531284B1 (ko) 절삭 헤드 및 위치설정 핀에 의해 생크에 구속해제 가능하게 클램핑된 절삭 헤드를 가진 회전식 절삭 공구
EP2944407A1 (fr) Agencement de fixation ainsi qu'une pièce interchangeable et une clé de verrouillage
CN106457492B (zh) 插入工具
EP2773478B1 (fr) Cartouche dotée d'un moyen de réglage grossier et d'un moyen de réglage fin
US12246414B2 (en) Multi-size tool bit holder for a rotary power tool
CN110062676A (zh) 侧激活模块化钻头
US5054344A (en) Quick change clamping mechanism
DK162328B (da) Borepatron til slagborsdrev
US20140113535A1 (en) Honing Tool
KR20160143687A (ko) 칩 제거 기계가공용 공구 및 이를 위한 절삭 에지 교환 기구
GB1567207A (en) Trepanning tool
US4462189A (en) Grinding tool with radially shiftable abrasive bars
US5158307A (en) Chuck for machine tools
CA2912262C (fr) Porte-poincon et configurations de poincon
JP2020528359A (ja) 調整装置を備える切削工具
EP2719489B1 (fr) Porte-outil avec dispositif de serrage à bille mobile et outil de coupe comprenant un porte-outil et une tête de coupe remplaçable
EP2719488B1 (fr) Porte-outil avec dispositif de serrage de doigt élastique et outil de coupe comprenant un porte-outil et une tête de coupe remplaçable

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16712837

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16712837

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载