EP2703099B1 - Support pour dispositif d'assemblage - Google Patents

Support pour dispositif d'assemblage Download PDF

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Publication number
EP2703099B1
EP2703099B1 EP13182119.1A EP13182119A EP2703099B1 EP 2703099 B1 EP2703099 B1 EP 2703099B1 EP 13182119 A EP13182119 A EP 13182119A EP 2703099 B1 EP2703099 B1 EP 2703099B1
Authority
EP
European Patent Office
Prior art keywords
arm
axle journal
bearings
bearing
holder according
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.)
Not-in-force
Application number
EP13182119.1A
Other languages
German (de)
English (en)
Other versions
EP2703099A1 (fr
Inventor
Michael Schneider
Alexander Pohl
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.)
Newfrey LLC
Original Assignee
Newfrey LLC
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 Newfrey LLC filed Critical Newfrey LLC
Publication of EP2703099A1 publication Critical patent/EP2703099A1/fr
Application granted granted Critical
Publication of EP2703099B1 publication Critical patent/EP2703099B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements

Definitions

  • the invention relates to a holder for a joining device having a first arm and having a second arm that is connected by a swivel joint to the first arm such that it can rotate about an axis and that forms a C-shaped frame with the first arm in a predefined operating position in which the two arms are braced rigidly on one another, wherein the free end of the first arm has a receptacle for a joining device and the free end of the second arm has a receptacle for a mating tool cooperating with the joining device.
  • Holders of the specified type are used to mount joining devices for producing fastened joints, for example rivet joints and self-piercing rivet joints.
  • joining devices have a punch equipped with a drive and also have a mating tool, e.g. in the form of a die.
  • the punch and die are held coaxially to one another on the holder and are supported against the reaction forces arising during the joining process.
  • High demands are placed on the coaxial alignment of the punch and die, since the strength and appearance of the fastened joint produced depend on it to a great degree.
  • coaxial alignment of the joining device and mating tool is a must.
  • the holder For bringing the fastening apparatus to the parts to be joined and for moving it away from them, the holder can be placed in a different shape using its swivel joint, by which means the distance between the joining device and the mating tool is increased so that they can be moved past projections or other obstacles in the vicinity of the parts to be joined.
  • a riveter is known with a holder of the initially mentioned type.
  • the dies of the riveter are not coaxial in this design, but instead are arranged at an angle to one another. But it is important here, too, for the joining surfaces of the dies to be located exactly opposite one another during the joining process so that uniform deformation of the rivet is ensured.
  • EP 1,163,963 B1 is a rivet setting machine with an essentially C-shaped frame that has a movable punch at a first end and, at a second end, a die supporting member with a die located thereon.
  • the die supporting member is movably mounted on the frame and can be moved from a first position in which the die is opposite the punch during fastening operations into a second position in which the die is in a location away from the punch and the distance between the die and punch is increased. In this way, additional space is available for inserting larger and more complicated workpieces into the frame opening and removing them therefrom.
  • the die supporting member is supported in a pivoting manner on an axle journal, and on its underside has a positioning guide with which it is brought into the appropriate position for accommodating the punch pressure in the operating position for joining.
  • Document DE 197 43 277 A1 describes an adjustment aid for a joining device in which two eccentric bushings are located in a receiving bore in an arm of a C-frame to hold a punch tool.
  • the eccentric bushings have the same eccentricity, and are rotated relative to one another with an open-end wrench to adjust the coaxiality or to compensate for alignment errors.
  • the rotational position of the eccentric bushings that has been adjusted can be locked by means of a screw that can be placed in milled openings on the circumference of the eccentric bushings.
  • a spot welding gun having a holder according to the preamble of claim 1 is disclosed in JP H04 46682 A .
  • the holder comprises a first gun arm inserted between forks of a second gun arm. Both gun arms are connected by a rotation pivot equipment having a hinge pin which penetrates the two forks and the first gun arm and is supported on bearing brackets arranged at its opposite ends. Thrust washers are placed on both sides of each fork and provide sliding surfaces for the rotation of the gun arms. When the thrust washers are worn and a gap arises between the thrust washers and the forks, bolts of pressing means which are arranged at the bearing brackets can be tightened thereby eliminating the gap and preventing a center difference developed between electrodes at the tip parts of the gun arms.
  • the object of the invention is to create a holder of the initially mentioned type in which a coaxial adjustment of the receptacles for the joining device and the mating tool is easy to carry out and can be achieved economically. In doing so, it is necessary to ensure that the adjusted coaxiality is maintained over the long term and when the arms of the holder are moved.
  • this object is attained by a holder for a joining device having a first arm and having a second arm that is connected by a swivel joint to the first arm such that it can rotate about an axis and that forms a C-shaped frame with the first arm in an operating position predefined for joining in which the two arms are braced rigidly on one another, wherein the free end of the first arm has a receptacle for a joining device, and the free end of the second arm has a receptacle for a mating tool cooperating with the joining device, wherein the position of the first arm relative to the second arm can be adjusted in the longitudinal direction of the axis by means of a first adjusting device at the swivel joint, and wherein the position of the first arm relative to the second arm can also be adjustable in a direction perpendicular to the axis by means of a second adjusting device at the swivel joint.
  • the arms of the holder which are manufactured separately from one another, can easily be adjusted in one direction at the swivel joint when they are assembled.
  • the requirements for precision of manufacture of the various parts of the holder can thus be less demanding and permit looser manufacturing tolerances.
  • the axial adjustment at the pivot bearing can be carried out with a simple adjusting device and requires only very little additional construction effort.
  • the position of the tool receptacle of the first arm relative to the tool receptacle of the second arm can be adjusted in two mutually perpendicular spatial directions, so that the receptacles intended for the joining device and mating tool can be adjusted to be very precisely coaxial to one another in the operating position predefined for joining.
  • the first arm has a forked first bearing section with two bearing branches that extend around a second bearing section of the second arm, wherein the swivel joint is located in mutually aligned bores in the bearing branches and the second bearing section.
  • an advantageous design of the swivel joint can have an axle journal that is attached in a bore of the second arm and whose ends extend out of the bearing section of the second arm on both sides, wherein bearings are arranged on the ends of the axle journal to be axially movable, these bearings being attached in the bores of the bearing branches of the first arm and being designed to support the first arm axially and radially on the axle journal.
  • the axial position of the bearings relative to the axle journal can be adjusted by means of the first adjusting device.
  • the design according to the invention of the swivel joint can be manufactured economically using simple, standard components, and is simple to assemble. Moreover, it permits an advantageous embodiment of the first adjusting device, which can have adjusting elements at both ends of the axle journal that limit the axial position of the bearings relative to the axle journal in the direction of the relevant end of the axle journal.
  • the adjusting elements can be composed of an adjusting screw with a flange having a contact surface for a bearing, and a locking screw, wherein the two screws are located in threaded bores on the end faces of the axle journal.
  • the second adjusting device has eccentric bushings, which are rotatably arranged in the bores in the bearing branches, and which accommodate the bearings. Rotating the eccentric bushings in the bores of the bearing branches makes it possible to displace the bearing center inside the bores, and thus to adjust the position of the first arm relative to the axle journal and thus relative to the second arm in the radial direction.
  • Each of the eccentric bushings preferably has an annular flange located on the outside of the bearing branches that is provided with openings or recesses, and at which the rotational position of the eccentric bushings can be locked by means of a screw engaging in an opening or recess. In this way the eccentric bushings are easily accessible from outside and can be moved in a simple manner.
  • the bearings are preferably plain bearings with an inner bushing and an outer bushing that are in engagement with one another through congruent spherical sliding surfaces.
  • the plain bearings clamping forces and high stresses resulting from deformation of the branches and of the axle journal under high load are avoided.
  • asymmetrical movement of the bushings of the plain bearings can be compensated.
  • the invention is not limited to the use of such bearings, but can also be implemented by means of conical plain bearings or roller bearings that accommodate axial forces.
  • the first and second arms can be provided at their free ends with receiving bores whose center axes each lie in a plane intersecting the center axes of the bores at a right angle, and are parallel in the operating position of the arms predefined for joining, and have a minimal distance from one another.
  • the distance must be smaller than the maximum axial and radial adjustability of the pivot bearing in order to ensure that the receiving bores can be brought into a coaxial position with the aid of the adjusting devices.
  • Figure 1 shows a frame 1 that has a first arm 2 and a second arm 3, which are connected by a swivel joint 4 to one another so as to be able to rotate about an axis A.
  • the first arm 2 has an essentially straight, elongated shape and extends crosswise to the axis A.
  • One end 5 of the arm 2 is forked to form a bearing section in two bearing branches 6, 7, which accommodate bearings of the swivel joint 4 in coaxial bores.
  • the other free end 8 of the arm 2 is provided with a receptacle 9 for a joining device.
  • the receptacle 9 has a cylindrical bore 10, into which a cylindrical section of the joining device can be inserted.
  • the bore 10 has an axis B that lies in the center plane of the arm 2 perpendicular to the axis A.
  • the arm 2 is provided with a bearing lug 11 that serves to connect to an actuating and support device, by means of which the arm 2 can be rotated relative to the arm 3 and can be braced rigidly on the arm 3 in the operating position for joining shown in Figure 1 .
  • the second arm 3 has essentially the shape of a right angle, with the end 12 of one side of the angle forming a bearing section that is connected to the swivel joint 4 and is located between the bearing branches 6, 7.
  • the free end 13 of the other side of the angle forms a receptacle 14 for a mating tool, for example a die 15.
  • the arm 3 has an attachment point 16 for attaching a handling device, for example the hand of an industrial robot. Also located on the handling device is the actuating and support device for rotating and supporting the first arm 2.
  • FIG. 2 shows the swivel joint 4 and the devices for adjusting it.
  • the swivel joint 4 has an axle journal 20, a center section of which is inserted without play in a bore 21 in the arm 3.
  • a collar 22 formed on the axle journal 20 rests against one side of the arm 3.
  • a nut 23 is screwed on a threaded section of the axle journal 20, resting against the arm 3 and holding the collar 22 in contact with the arm 3.
  • Bearings 24, 25 of identical design are located on the two ends of the axle journal 20 projecting from the arm 3.
  • the bearings 24, 25 have an inner bushing 26 and an outer bushing 27 that are in engagement with one another through congruent spherical sliding surfaces.
  • the bearings 24, 25 thus constitute plain bearings that can transmit forces in both the radial and axial directions.
  • the outer bushings 27 of the bearings 24, 25 are arranged in eccentric bushings 28, each of which is located in a bore 29 in the bearing branches 6, 7 of the arm 2.
  • the outer bushings 27 of the bearings 24, 25 are axially positioned in the eccentric bushings 28 by a stop collar 30 and a resilient retaining ring 31.
  • the eccentric bushings 28 have an annular flange 32 that is located in an annular recess on the outside of the applicable bearing branch 6, 7.
  • the annular flange 32 is provided with a number of bores 33 arranged at regular intervals from one another for accommodating a stop screw 34 that can be screwed into a threaded bore in the bearing branch 6 or 7.
  • the adjusting device for adjusting the position of the arm 2 in the axial direction relative to the arm 3 comprises adjusting screws 35, 36, a threaded section 37 of which is screwed into threaded bores located in the end faces of the two ends of the axle journal 20.
  • the adjusting screws 35, 36 have flanges 38, which constitute contact surfaces for the inner bushings 26 on the outsides of the bearings 24, 25.
  • the adjusting screws 35, 36 are secured against loosening by means of locking screws 39 that engage threaded bores in the axle journal 20.
  • the arm 2 is to be moved to the left in Figure 2 relative to the arm 3, first the left-hand locking screw 39 is loosened before the left-hand adjusting screw 35 is unscrewed by the amount of the adjustment, and then the right-hand locking screw 39 is loosened before the right-hand adjusting screw 36 is screwed deeper into the threaded bore in the axle journal 20 by the corresponding amount.
  • the right-hand adjusting screw 36 displaces the right-hand bearing 25, and with it the arm 2 and thus the left-hand bearing 24, far enough to the left that its inner bushing 27 once again rests against the left-hand adjusting screw 35.
  • the receptacle 9 of the arm 2 can be adjusted in the X direction relative to the die 15.
  • the stop screws 34 are loosened before the two eccentric bushings 28 are rotated in the same direction in the bores 29 by a specific angle of rotation.
  • the rotation of the eccentric bushings 28 causes a parallel displacement of the axis of the bores 29 relative to the axis of the axle journal 20 in two spatial directions.
  • the displacement in the direction perpendicular to the axis B is relevant.
  • the maximum movement of the receptacle 9 in the Y direction is limited to twice the eccentricity of the eccentric bushings 28.
  • the parallel alignment of the receptacle 9 with the receptacle 14 can also be adjusted by the means that the eccentric bushings are rotated through different angles of rotation or in opposite directions.
  • a motion can also result in a motion in the X direction, which then must be corrected with the aid of the adjusting screws 35, 36.
  • a movement of the arm 2 in the Y direction may also require an adjustment at the support and actuating device so that the operating position of the arm 2 that is predefined for joining is maintained.
  • the relative positions of the receptacles 9, 14 for the joining device and for the mating tool can be adjusted in the X and Y directions with the aid of the adjusting devices implemented on the swivel joint 4, thereby establishing a precise coaxial alignment of the receptacles 9, 14 with one another.
  • the adjustment can be performed easily at easily accessible locations on the frame 1, and can be secured over the long term by means of stop screws and locking screws.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Claims (9)

  1. Élément de retenue pour un dispositif d'assemblage, ayant un premier bras (2) et ayant un deuxième bras (3) qui est relié par un joint pivotant (4) au premier bras (2) de telle sorte qu'il peut tourner autour d'un axe (A) et qui forme un cadre (1) en forme de C avec le premier bras (2) dans une position de fonctionnement prédéfinie pour l'assemblage dans laquelle les deux bras (2, 3) sont supportés rigidement l'un sur l'autre, l'extrémité libre du premier bras (2) ayant un logement (9) pour un dispositif d'assemblage, et l'extrémité libre du deuxième bras (3) ayant un logement (14) pour un outil apparié coopérant avec le dispositif d'assemblage, et la position du premier bras (2) par rapport au deuxième bras (3) pouvant être réglée dans la direction longitudinale de l'axe (A) au moyen d'un premier dispositif de réglage au niveau du joint pivotant (4), caractérisé en ce que la position du premier bras (2) par rapport au deuxième bras (3) peut être réglée dans une direction perpendiculaire à l'axe (A) au moyen d'un deuxième dispositif de réglage au niveau du joint pivotant (4).
  2. Élément de retenue selon la revendication 1, caractérisé en ce que le premier bras (2) a une première section de palier fourchue dotée de deux branches de palier (6, 7) qui s'étendent autour d'une deuxième section de palier du deuxième bras (3), et en ce que le joint pivotant (4) est situé dans des alésages (29) alignés mutuellement dans les branches de palier (6, 7) et dans un alésage (21) dans la deuxième section de palier du deuxième bras (3).
  3. Élément de retenue selon la revendication 2, caractérisé en ce que le joint pivotant (4) a un tourillon d'axe (20) qui est fixé dans l'alésage (21) de la deuxième section de palier et dont les extrémités s'étendent hors de la deuxième section de palier des deux côtés, et en ce que les paliers (24, 25) sont disposés sur les extrémités du tourillon d'axe (20) de manière à être mobiles de manière axiale, ces paliers étant fixés dans les alésages (29) des branches de palier (6, 7) du premier bras (2) et étant conçus pour supporter le premier bras (2) de manière axiale et radiale sur le tourillon d'axe (20), la position axiale des paliers (24, 25) par rapport au tourillon d'axe (20) pouvant être réglée au moyen du premier dispositif de réglage.
  4. Élément de retenue selon la revendication 3, caractérisé en ce que le premier dispositif de réglage a des éléments de réglage aux deux extrémités du tourillon d'axe (20) qui limitent la position axiale des paliers (24, 25) par rapport au tourillon d'axe (20) dans la direction de l'extrémité correspondante du tourillon d'axe (20).
  5. Élément de retenue selon la revendication 4, caractérisé en ce que les éléments de réglage ont une vis de réglage (35, 36) dotée d'une embase (38) ayant une surface de contact pour un palier (24, 25), et ont une vis de blocage (39), la vis de réglage (35, 36) et la vis de blocage (39) étant situées dans des alésages filetés sur les faces d'extrémité du tourillon d'axe (20).
  6. Élément de retenue selon l'une des revendications 1 à 5, caractérisé en ce que le deuxième dispositif de réglage a des bagues excentriques (28) qui sont disposées de manière rotative dans les alésages (29) dans les branches de palier (6, 7) et qui reçoivent les paliers.
  7. Élément de retenue selon la revendication 6, caractérisé en ce que les bagues excentriques (28) ont une collerette annulaire (32) pourvue d'ouvertures ou d'évidements, laquelle collerette est située sur l'extérieur des branches de palier (6, 7), et collerette au niveau de laquelle la position en rotation des bagues excentriques (28) peut être bloquée au moyen d'une vis (34) venant en prise dans une ouverture (33) ou un évidement.
  8. Élément de retenue selon l'une des revendications 4 à 7, caractérisé en ce que les paliers (24, 25) sont des paliers lisses et ont un coussinet intérieur (26) et un coussinet extérieur (27) qui sont en prise l'un avec l'autre par le biais de surfaces de glissement sphériques coïncidentes.
  9. Élément de retenue selon l'une des revendications précédentes, caractérisé en ce que le premier bras (2) et le deuxième bras (3) ont, à leurs extrémités libres, des alésages de réception dont les axes centraux se situent dans un plan croisant les axes centraux des alésages (21, 29) à angle droit, et sont parallèles dans la position de fonctionnement des bras (2, 3) prédéfinie pour l'assemblage, et sont situés à une distance minimale l'un de l'autre.
EP13182119.1A 2012-08-30 2013-08-29 Support pour dispositif d'assemblage Not-in-force EP2703099B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012108031.3A DE102012108031A1 (de) 2012-08-30 2012-08-30 Halter für eine Fügevorrichtung

Publications (2)

Publication Number Publication Date
EP2703099A1 EP2703099A1 (fr) 2014-03-05
EP2703099B1 true EP2703099B1 (fr) 2018-08-22

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ID=49080719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13182119.1A Not-in-force EP2703099B1 (fr) 2012-08-30 2013-08-29 Support pour dispositif d'assemblage

Country Status (6)

Country Link
EP (1) EP2703099B1 (fr)
JP (1) JP2014046365A (fr)
KR (1) KR20140029221A (fr)
CN (1) CN103658494A (fr)
DE (1) DE102012108031A1 (fr)
TW (1) TW201429578A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016215450B4 (de) 2016-08-18 2024-02-15 Audi Ag Fügezange
CN106270348B (zh) * 2016-09-18 2018-04-20 中国农业大学 一种具有加热功能的电池铆接装置及其铆接方法
DE102017110603A1 (de) 2017-05-16 2018-11-22 Böllhoff Verbindungstechnik GmbH Werkzeughalter
DE102018205775A1 (de) * 2018-04-17 2019-10-17 Robert Bosch Gmbh Stanznietvorrichtung und Fertigungseinrichtung
CN108500194A (zh) * 2018-05-04 2018-09-07 昆明理工大学 一种电液控制可调喉深自冲铆接装置
CN109175202B (zh) * 2018-08-16 2024-04-23 江阴市勤丰金属制品有限公司 一种液压铆接机的旋转组件

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Publication number Priority date Publication date Assignee Title
US1404126A (en) 1919-02-13 1922-01-17 Hanna Engineering Works Riveter
JPH0763852B2 (ja) * 1990-06-13 1995-07-12 株式会社電元社製作所 スポット溶接ガンのアーム回転枢軸装置
DE19743277C2 (de) 1997-09-30 2002-06-13 Boellhoff Gmbh Einstellhilfe für eine aus Stempelwerkzeug und Gegenwerkzeug bestehende Fügeeinrichtung
JP2001353549A (ja) 2000-06-14 2001-12-25 Nippon Pop Rivets & Fasteners Ltd 自動穿孔型リベット締結機
DE102004005884B4 (de) * 2004-02-05 2012-03-29 Newfrey Llc Fügeeinrichtung mit einem Stempelwerkzeug und einem Gegenwerkzeug und einem Halter
JP2011104601A (ja) * 2009-11-13 2011-06-02 Dengensha Mfg Co Ltd Ｘ型ポータブルガンの主軸構造

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2703099A1 (fr) 2014-03-05
JP2014046365A (ja) 2014-03-17
TW201429578A (zh) 2014-08-01
CN103658494A (zh) 2014-03-26
DE102012108031A1 (de) 2014-03-06
KR20140029221A (ko) 2014-03-10

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