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WO2012007161A1 - Système de serrage pour maintenir une pièce serrée - Google Patents

Système de serrage pour maintenir une pièce serrée Download PDF

Info

Publication number
WO2012007161A1
WO2012007161A1 PCT/EP2011/003500 EP2011003500W WO2012007161A1 WO 2012007161 A1 WO2012007161 A1 WO 2012007161A1 EP 2011003500 W EP2011003500 W EP 2011003500W WO 2012007161 A1 WO2012007161 A1 WO 2012007161A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
clamping device
profiling
tensioning
workpiece
Prior art date
Application number
PCT/EP2011/003500
Other languages
German (de)
English (en)
Inventor
Stefan Heyn
Jean-Claude Montandon
Original Assignee
Präzisionsmechanik Heyn 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.)
Filing date
Publication date
Application filed by Präzisionsmechanik Heyn Gmbh filed Critical Präzisionsmechanik Heyn Gmbh
Priority to US13/809,042 priority Critical patent/US20130214467A1/en
Priority to CH00153/13A priority patent/CH705531B1/de
Publication of WO2012007161A1 publication Critical patent/WO2012007161A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/14—Clamps for work of special profile
    • B25B5/147—Clamps for work of special profile for pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • B23B31/2073—Axially fixed cam, moving jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40—Expansion mandrels
    • B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
    • B23B31/4053—Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means
    • B23B31/406—Gripping the work or tool by jaws moving radially controlled by conical surfaces using fluid-pressure means to actuate the gripping means using mechanical transmission through the spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston

Definitions

  • Clamping device for clamping a workpiece
  • the present invention relates to a clamping device for clamping a workpiece, wherein the clamping device comprises at least one clamping device and at least one cooperating with the clamping device guide means, wherein the clamping device axially along the guide device is displaceable, wherein the clamping device has a radial profiling, wherein the guide means one of radial profiling of the clamping device corresponding counter profiling, and wherein in an axial displacement of the profiling of the clamping device along the counter profiling of the guide means, the clamping device is pressed in a substantially radial direction and thereby the workpiece is clamped.
  • clamping devices or clamping tools have long been known.
  • An exemplary application of such fixtures is to hold workpieces during machining.
  • the machining can be a grinding process, for example an external cylindrical grinding.
  • other types of processing such as e.g. a turning or milling, with or without a finishing, such as honing, grinding, lapping and the like, be.
  • inner clamping and outer clamping During internal clamping, the workpiece is held within it in a recess thereof and the tension is generated by a radially outward force. When clamping outside the workpiece is held on the outer periphery and the clamping action is generated by a radially inwardly acting force.
  • the clamping device which has, for example, a Sp Schwarzkronenmit music is a wearing part, which often has to be replaced, in which case the manufacturing process is interrupted.
  • a wear of the clamping device can be minimized by suitable choice of material, but this is not easy in the clamping tool according to the prior art.
  • the material has to be hard and stable, but due to the expansion stress function it also has to have a certain elasticity.
  • the elasticity of the clamping device is required to allow a tightening and automatic release.
  • the invention is therefore based on the object to avoid the disadvantages of the prior art, and in particular a clamping device of the type mentioned in such a way that it has a lower susceptibility to wear and thus longer operating life.
  • An advantage of the present invention is that the constructive degrees of freedom are increased by the two-part design of the clamping device.
  • the part of the tensioning device which has the profiling can be made of a suitable wear-resistant material, so that the life increases, and fewer interruptions in the production process are required by exchanges.
  • the tensioning device has a tensioning element which has the profiling of the tensioning device and a further element connected to the tensioning element. This preferred two-part training constructively separates the clamping element of another element, which then can serve the drive or holding the clamping element depending on the kinematic design of the clamping device.
  • the further element is a lifting element for the axial displacement of the clamping element.
  • the lifting element can be made of a particularly tough material. while the material of the tension member is selected for high wear resistance.
  • the further element is connected to the clamping element via a pivoting device, preferably a joint.
  • the joint is a pin bearing.
  • the tensioning element is connected to the further element via a connecting device, wherein the connecting device connects the tensioning element and the further element substantially axially rigidly and permits a radial pivoting of the tensioning element.
  • the connecting device is as described above preferably a joint, in particular a pivot joint.
  • the clamping element is further connected to the further element via a biasing element, wherein the biasing element biases the clamping element and the further element to each other.
  • the biasing member is preferably a spring means, preferably a compression spring, which, in particular with asymmetrically arranged connection element for a stable relative positioning of tensioning element and further element, i. especially the lifting element ensures.
  • the spring device also ensures a bias of the profiling on the counter profiling.
  • the clamping device further comprises a biasing element, which, in particular without axial displacement of the profiling of the clamping device along the counter-profiling of the guide means biases the profiling of the clamping device against the counter-profiling of the guide means.
  • the biasing element therefore provides an operating condition of the tensioning device for loading and Unloading a workpiece safely by providing for a defined investment of profiling / counter profiling, so that in the initial position with respect to profiling / counter profiling no radial pressure is exerted on a workpiece.
  • a radial pressure is generated only by the movement of the profiling on the Martinezprofi lation.
  • the biasing element is preferably a pressure ring.
  • the pressure ring is preferably arranged adjacent to the profiling / counter profiling or the end portion of the clamping element to ensure optimum leverage especially for long, thin parts.
  • the clamping element and the further element are made of different materials. It is preferred that the material of the clamping element has a high wear resistance. As a result, the wear resistance of the clamping device is increased. In contrast to the prior art, no compromise has to be made with regard to the material selection in the design of the tensioning element according to the invention, which no longer needs to be elastic due to the two-part construction according to the invention.
  • the clamping device is provided for internal clamping.
  • the at least one clamping element is designed as a mandrel, as a lamellar clamping mandrel or as an expanding crown driver.
  • the clamping device is provided for external clamping.
  • the at least one clamping element is designed as a collet chuck or as a chuck.
  • Figure 1 is a highly schematic longitudinal sectional view of a first embodiment of a clamping device according to the present invention for internal clamping of a workpiece.
  • FIG. 2A is a schematic longitudinal sectional view of an exemplary workpiece for explaining a first method step of its external machining in connection with the clamping device according to the invention.
  • Fig. 2B is a schematic longitudinal sectional view of the workpiece of Fig. 1A for
  • FIG. 3 is a highly schematic longitudinal sectional view of a second embodiment of a tensioning device according to the present invention for externally clamping a workpiece;
  • FIG. 4 shows a highly schematic longitudinal section of a third exemplary embodiment of a tensioning device according to the present invention for internal clamping of a workpiece
  • Fig. 5 is a highly schematic longitudinal sectional view of a fourth embodiment of a clamping device according to the present invention for clamping out a workpiece outside.
  • FIGS. 2A and 2B are illustrative of an application of a tensioner according to the present invention.
  • FIG. 1 shows a tensioning device or clamping tool, which in its entirety is designated by the reference numeral 1.
  • the workpiece to be clamped by means of the clamping device 1 is designated by the reference numeral 10.
  • An exemplary application of a workpiece 10 to be clamped is explained in more detail below with reference to FIGS. 2A and 2b.
  • Fig. 1 which illustrates the application of the inner clamping closer, therefore, the workpiece 10 has a central axial recess 13 in which the workpiece 10 is held in the clamped state.
  • a recess 3 is provided, in which the clamping device 4 is mounted axially movable. The direction of movement of the clamping device 4 is indicated in Fig.
  • the clamping device 4 is inventively formed in two parts and has a clamping element 14 and a lifting element 24th on.
  • the lifting element 24 is preferably driven by a drive device (not shown), which can be, for example, hydraulic or pneumatic.
  • the clamping element 14 and the lifting element 24 are formed substantially as cylindrical sleeves and arranged around a holding part 5, which is preferably designed as a receiving mandrel, the clamping device 1.
  • the clamping element 14 has a protruding from the tool body 2 section 14 a, which widens in its thickness to its side facing away from the Malawi ground- body 2 end radially inward.
  • On the radially inner side of the clamping device facing away from the end of the portion 14a of the clamping element 14 thus a frusto-conical material recess, which is recognizable in the longitudinal sectional view of Fig. 2 as a slope formed, whereby a profiling 6 is provided.
  • the profiling 6 is applied to a cooperating counter profiling 7 of the holding part 5 of the clamping device 1.
  • the counter profiling 7 is designed as a truncated cone-shaped material recess of the section 14 a corresponding truncated cone whose outer dimensions are slightly smaller than the inner nenab jazzen the profiling 6 are.
  • the profiling 6 is arranged radially outside of the counter profiling 7 in this embodiment.
  • the profiling 6 or the counter-profiling 7 can generally have very different shapes, which allow a cocking or relaxing; they are therefore not limited to the illustrated and described truncated cone shape.
  • the shape of the profiling 6 or of the counter profiling 7 corresponds to an application-specific ramp. Due to the application-specific shaping a very special clamping process can be realized. For example, this can be realized during the clamping process first a biasing, then stopping at a fixed stop, and finally a Fertigspannen.
  • the lifting element 24 is provided, which is connected via a connecting device in the form of a joint 8 with the clamping element 14.
  • the joint 8 is a pin joint.
  • the joint 8 ensures a substantially axially fixed connection of the lifting element 24 with the clamping element 14, but allows a rotation of the clamping element 14 in the radial direction, ie for the clamping operation.
  • a biasing element in the form of a spring device 9 is provided between the lifting element 24 and the tensioning element 14.
  • the spring device 9 is provided radially outside of the joint 8.
  • the tensioning element 14 is separate from and biased and articulated to the lifting or driving element 24.
  • the spring device 9 ensures a bias of the clamping element 14 and more precisely of its profiling 6 having portion against the counter profiling 7 having portion of the holding part 5 and the horrend stresses 2.
  • the tensioning and relaxation function is not more by the elasticity of the material of the clamping element 14, but by the biasing force of the spring device designed as a compression spring 9.
  • the primary purpose of the compression spring 9, which via the joint 8 on the clamping element 14 acts is to hold the filament 6 is biased to the Gumbleprofiltechnik 7 at not attached workpiece 10, so that the workpiece 10 can be easily plugged or ejected.
  • the particular advantage of this two-part design of the clamping device 4 is that optimal materials can be used for the clamping element 14 and the lifting element 24, which increases the life of the clamping element 14 (or the lifting element 24) against wear extremely.
  • the material of the tensioning element 14 can be selected with the present invention in view of high wear resistance and no longer has to be elastic. Also, the entire arrangement is more compact, since the overall length of the clamping device 4 can be much shorter.
  • Fig. 1 the condition of the unstressed workpiece 10 is shown, i. the workpiece 10 is simply attached to the end portion 14 a of the clamping element 14.
  • the clamping element 14 is now moved into the tool body 2, i. 1 shifted to the left, so that the profiling 6 along the counter-profile 7 shifts to the left. Due to the predetermined forced system or positive connection of the profiling 6 and the counter-profiling 7wird the end portion 14a is bent or pressed outwards and thus firmly clamped the workpiece 10.
  • a sleeve-shaped end portion 14a (in an axisymmetric configuration) is provided.
  • a plurality of, in particular crown-like, end sections 14a to be arranged circumferentially around the holding part 5 in order to form a spreading cone driver.
  • FIGS. 2A and 2B schematically illustrate an exemplary workpiece in the form of a rotationally symmetrical body 100.
  • the grinding process of the outer contour 101 (see FIG. 2B) of the body 100 will be explained in more detail below with reference to FIGS. 2A and 2B. It is about the finish grinding of the outer contour 101 of the body 100, wherein advantageously two operations or process steps are provided in a single clamping.
  • the grinding task is that the complete outer contour 101 of the body 100 must be ground high-precision, time-saving and efficient.
  • the outer contour 101 has a first short wide portion 101 a at the end of the body 100 facing away from the end 102. Furthermore, the outer contour 101 has a second long narrower portion 101 b adjoining the portion 101 a in the direction of the end 102.
  • the two sections 101a and 101b stepped in their cross-sectional dimensions are cylindrical sections of the body 100, and extend toward the end 102, that is, in the illustration of the drawing, from left to right.
  • the body 100 has, opposite the end 102, a central longitudinal recess 103 in the form of a blind hole which runs parallel to the longitudinal axis of the body 100.
  • the body 100 In order to finish grinding the outer contour 101 of the body 100, the body 100, and more precisely its recess 103, is placed on a centering mandrel (not shown) and is rotatably mounted there. The body is then driven on section 101a of outer contour 101 by means of an inner ring drive (not shown) on the centering mandrel. The body 100 is pressed by tilting the drive ring to the centering of the inner bore.
  • a centering bevel 104 (see Fig. 1A) is then ground by a grinding wheel (not shown).
  • the centering bevel 104 is a high-precision ground edge at the end 102 of the second portion 101b which points towards the end 102.
  • the centering bevel 104 serves to prepare the subsequent processing of the entire outer contour 101 in order to make it as exact as possible.
  • the complete outer cylindrical grinding of the body 100 now takes place (see Fig. 2B).
  • the inner ring drive unit is returned to the rest position. pushed, and the body 100 is positioned on the grinding wheel with high precision on the previously ground Zentrierfase 104.
  • the body 100 is clamped inside by a Sp Drökronenmit commentary formed on the centering pin at the inner diameter.
  • the complete outer contour 101 is then ground in a controlled manner, wherein the body 100 is held at its end 102 in a tailstock (not shown), so that the grinding is no longer performed in a flying manner as in the first method step, but the body 100 is firmly clamped.
  • the body 100 is rotatably mounted on the centering mandrel in a first method step (for grinding the Zentrierfase) and the second step for finish grinding the entire outer contour 101 on the centering mandrel rotatably clamped by a Sp Dahlkronenschreib.
  • the total processing time of both operations or process steps is between 15 and 25 seconds.
  • the first embodiment of the present invention described herein in connection with Figure 1 is suitable for use in machining the outer contour of the body 100 (see Figures 2A and 2B).
  • the first operation for producing the centering bevel 104 is performed with the tensioning element 14 relaxed, and the second operation is performed with the tensioning element 14 tensioned, i. the portion 14a of the tensioning element 14 is retracted into the tool body 2 to move the workpiece 10, i. the body 100, to harness inside.
  • the tensioning of the workpiece 10 is achieved by a relative movement of the profiling 6 on the counter profiling 7. It can therefore be a clamping of the workpiece 10 by a movement of the lifting element 24 in the tool base body 2 into (ie to the illustration of FIG. 2 to the left), but also can be a clamping of the workpiece 10 by a movement of the counter-profiling 7 from the Tool body 2 out (ie, in the illustration of FIG. 2 to the right) out. In the latter case, as the lifting element 24 and the clamping element 14 is static and is not moved axially.
  • a second embodiment of the present invention is shown, which serves for external clamping and can be used for example as a collet or chuck.
  • the second exemplary embodiment of the present invention illustrated in FIG. 3 is generally similar to the first exemplary embodiment already described above in conjunction with FIG. 1, so that in order to avoid repetition, only the differences from the first exemplary embodiment will be described in more detail below.
  • the tensioning element 14, which forms the tensioning device 4 together with the lifting device 24, has a widening which increases radially outward in the direction away from the tool base body 2 in order to form a truncated cone-shaped profiling 6.
  • the profiling 6 is applied to a corresponding counter profiling 7.
  • the profiling 6 is a truncated cone and the counter-profiling 7 is a truncated cone-shaped recess.
  • the counter profiling 7 is arranged radially outside the profiling 6.
  • a movement of the lifting element 24 into the tool body 2, ie according to the representation of FIG. 3 to the left, ensures a movement of the clamping element 14 into the tool 1, whereby the profiling 6 slides on the counter profiling 7, and the outer end portion 14a of the clamping element 14 clamps the workpiece 10 in the manner of a jaw.
  • a third and fourth embodiment of the present invention is shown schematically.
  • the fourth exemplary embodiment (FIG. 5) generally corresponds to the second exemplary embodiment already described above in conjunction with FIG. 3 and is provided for external clamping. Therefore, only the differences from the exemplary embodiments already described are explained below in order to avoid repetitions.
  • the difference of the third and fourth embodiments of the first and second embodiments is in the formation of the biasing member 9 '.
  • the biasing element 9 is a compression spring, which provides for a system or bias of the profiling 6 and counter profiling 7 even when not existing workpiece 10.
  • the biasing member 9 ' has the same function as the biasing member 9, but according to the third and fourth embodiments as a pressure ring, in particular as an O-ring formed.
  • the biasing element 9 ' is not disposed between the lifting element 24 and the clamping element 14 and does not connect these two parts.
  • the pretensioning element 9 ' is arranged offset directly outside the clamping element 14 in an axially inward direction (relative to the tool body) to the outer end section 14a.
  • the pressure ring 9 ' is inserted in an annular groove and presses by its bias inward the profiling 6 on the counter-profiling 7. Accordingly, in the fourth embodiment (Fig.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping On Spindles (AREA)

Abstract

L'invention concerne un système de serrage (1) pour maintenir une pièce (10) serrée, ledit système de serrage présentant au moins un dispositif de serrage (4) et au moins un dispositif de guidage coopérant avec le dispositif de serrage. Le dispositif de serrage peut être déplacé dans le sens axial le long du dispositif de guidage. Le dispositif de serrage présente un profil radial (6), le dispositif de guidage présentant un profil antagoniste (7) correspondant au profil radial du dispositif de serrage. Lors d'un déplacement radial de son profil le long du profil antagoniste du dispositif de guidage, le dispositif de serrage est comprimé essentiellement dans le sens radial, ce qui a pour effet de maintenir la pièce bloquée par serrage. Le dispositif de serrage est moins exposé aux risques d'usure et présente par conséquent une meilleure durée de vie, dans la mesure où ledit dispositif de serrage est conçu en au moins deux parties.
PCT/EP2011/003500 2010-07-14 2011-07-13 Système de serrage pour maintenir une pièce serrée WO2012007161A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/809,042 US20130214467A1 (en) 2010-07-14 2011-07-13 Clamping fixture for clamping a workpiece
CH00153/13A CH705531B1 (de) 2010-07-14 2011-07-13 Spannvorrichtung zum Spannen eines Werkstücks.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010027152.7A DE102010027152B4 (de) 2010-07-14 2010-07-14 Spannvorrichtung zum Spannen eines Werkstücks
DE102010027152.7 2010-07-14

Publications (1)

Publication Number Publication Date
WO2012007161A1 true WO2012007161A1 (fr) 2012-01-19

Family

ID=44544029

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/003500 WO2012007161A1 (fr) 2010-07-14 2011-07-13 Système de serrage pour maintenir une pièce serrée

Country Status (3)

Country Link
CH (1) CH705531B1 (fr)
DE (1) DE102010027152B4 (fr)
WO (1) WO2012007161A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN108724048A (zh) * 2018-06-21 2018-11-02 邵东智能制造技术研究院有限公司 一种老虎钳的头部卡夹装置

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* Cited by examiner, † Cited by third party
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CN104669240A (zh) * 2013-11-30 2015-06-03 深圳富泰宏精密工业有限公司 装夹机构

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US2080906A (en) * 1935-02-28 1937-05-18 Hannifin Mfg Co Pipe aligning tool
BE531504A (fr) * 1984-08-30 1954-09-15 Arcos Soudure Elect Autogene Dispositif pour l'aignement de conduites a souder bout a bout
US2777048A (en) * 1954-12-04 1957-01-08 Kocks Friedrich Clamping device for butt-welding of pipes
US3709546A (en) * 1970-07-20 1973-01-09 D Vaughan Conduit puller
DE2522465A1 (de) * 1975-05-21 1976-12-09 Hilti Ag Spanneinrichtung fuer vorwiegend runde serien-pruefteile in mess- und pruefmittel
US4277197A (en) * 1980-01-14 1981-07-07 Kearney-National, Inc. Telescoping tool and coupling means therefor
US4405075A (en) * 1981-05-11 1983-09-20 Combustion Engineering, Inc. Structure for aligning and butt-welding tube ends
GB2307939A (en) * 1995-12-09 1997-06-11 Weatherford Oil Tool Appararus for gripping a pipe

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Publication number Priority date Publication date Assignee Title
US2904278A (en) 1954-12-14 1959-09-15 Claud C Riemenschneider Means for rotatably mounting carpet rolls and the like
DE19508175A1 (de) 1995-03-09 1996-09-12 Montan Hydraulik Gmbh & Co Kg Klemmvorrichtung für zylindrische, in achsialer Richtung verlagerbare oder drehende Teile
DE10118664B4 (de) 2001-04-14 2009-11-05 C. Stiefelmayer Gmbh & Co. Kg Spanneinrichtung für zu bearbeitende Werkstücke mit Unwuchtausgleich

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2080906A (en) * 1935-02-28 1937-05-18 Hannifin Mfg Co Pipe aligning tool
US2777048A (en) * 1954-12-04 1957-01-08 Kocks Friedrich Clamping device for butt-welding of pipes
US3709546A (en) * 1970-07-20 1973-01-09 D Vaughan Conduit puller
DE2522465A1 (de) * 1975-05-21 1976-12-09 Hilti Ag Spanneinrichtung fuer vorwiegend runde serien-pruefteile in mess- und pruefmittel
US4277197A (en) * 1980-01-14 1981-07-07 Kearney-National, Inc. Telescoping tool and coupling means therefor
US4405075A (en) * 1981-05-11 1983-09-20 Combustion Engineering, Inc. Structure for aligning and butt-welding tube ends
BE531504A (fr) * 1984-08-30 1954-09-15 Arcos Soudure Elect Autogene Dispositif pour l'aignement de conduites a souder bout a bout
GB2307939A (en) * 1995-12-09 1997-06-11 Weatherford Oil Tool Appararus for gripping a pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108724048A (zh) * 2018-06-21 2018-11-02 邵东智能制造技术研究院有限公司 一种老虎钳的头部卡夹装置
CN108724048B (zh) * 2018-06-21 2024-04-26 邵东智能制造技术研究院有限公司 一种老虎钳的头部卡夹装置

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Publication number Publication date
DE102010027152B4 (de) 2019-03-28
DE102010027152A1 (de) 2012-01-19
CH705531B1 (de) 2016-06-30

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