WO1996035547A1 - Device for indexing a part through a hole in said part - Google Patents

Device for indexing a part through a hole in said part Download PDF

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Publication number
WO1996035547A1
WO1996035547A1 PCT/FR1996/000695 FR9600695W WO9635547A1 WO 1996035547 A1 WO1996035547 A1 WO 1996035547A1 FR 9600695 W FR9600695 W FR 9600695W WO 9635547 A1 WO9635547 A1 WO 9635547A1
Authority
WO
WIPO (PCT)
Prior art keywords
slide
piston
sleeve
jaw
indexing
Prior art date
Application number
PCT/FR1996/000695
Other languages
French (fr)
Inventor
Jean-Philippe Oi
Original Assignee
Abb Preciflex Systems
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 Abb Preciflex Systems filed Critical Abb Preciflex Systems
Publication of WO1996035547A1 publication Critical patent/WO1996035547A1/en

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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
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
    • 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
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction

Definitions

  • the present invention relates to a device for indexing a part, such as an automobile body element, through a hole in this part.
  • At least one of the parts to be assembled is precisely indexed on a support member.
  • This member can be fixed relative to the assembly station or mobile to constitute a pallet that can be moved from station to station.
  • a hole is made in the room beforehand through which indexing must be ensured.
  • the support member intended to receive the part is then equipped with a projecting pin which enters the hole when the part is put in place.
  • the part undergoes deformations due to mechanical stresses (positioning faults of the various assembled parts, etc.) or thermal stresses (welding, etc.), so that it can be difficult, even impossible to remove the assembled parts from the associated support members after this assembly operation.
  • this type of device is generally equipped with means for locking the part on an upper support face of the sleeve inside which the retractable pin slides.
  • these means of locking lage consist of a jaw pivotally mounted on the support member about an axis adjacent to the upper bearing face of the sleeve. It is therefore necessary to provide a second hole in the part to allow the passage of the locking jaw, which on the one hand complicates the manufacture of the part and on the other hand reduces its mechanical characteristics.
  • An object of the invention is to provide a device for indexing a part through a hole in this part, having a retractable indexing pin and a means for locking the part on the device which does not require the making an additional hole in the room.
  • the invention therefore relates to a device for indexing a part through a hole in this part, comprising a sleeve having an upper face forming a support for the part, a piston mounted in the sleeve to slide under the effect drive means between a retracted position inside the sleeve and a deployed position in which it extends projecting from the upper bearing face of the sleeve by an end portion forming an indexing pin, and a clamping jaw of the part on the upper support face of the sleeve, movably mounted on the indexing pin to move under the effect of control means between an active position in which it forms a clamping stop for the part and an inactive position in which it allows free passage of the indexing pin through the hole in the part.
  • the jaw control means comprise a slide mounted in an axial bore of the piston to slide under the effect of drive means between a first position in which it ensures the locking of the jaw in its active position by means of an active part forming a cam, and a second position in which it releases the locking of this jaw.
  • the active part of the slider alone ensures the locking of the jaw by cam effect, without any force being exerted on the driving means of the slider.
  • the jaw is mounted on the indexing pin to pivot around an axis substantially perpendicular to an axial plane of the piston.
  • the device comprises two jaws having faces opposite one another with which the active part of the slide cooperates.
  • the jaw control means comprise a return link articulated by one of its ends to the jaw and by its other end to an axis mounted to slide in an axial slot of the slide.
  • the means for driving the piston and the slide are common and comprise a member for actuating the slide mounted between the sleeve and the slide, a first return spring disposed between the piston and the sleeve for returning the piston to its deployed position, and axial stop members formed on the piston on the one hand and on the slide on the other hand to ensure axial drive of the piston by the slide towards its retracted position when the slide is in its unlocking position of the jaw relative to the piston.
  • the means for driving the piston and the slide comprise a second return spring disposed between the sleeve and the slide to return the slide to its locked position. jaw.
  • - Figure 1 is a sectional view through an axial plane of an indexing device according to the invention, the indexing pin being in the deployed position and the locking jaws being in the active position;
  • - Figure 2 is a detail view of the upper area of the device of Figure 1;
  • FIG. 3 is a sectional view along line III-III of Figure 2;
  • FIG. 4 is a sectional view along line IV-IV of Figure 1, the locking jaws being in the inactive position and the indexing pin being retracted inside the sleeve.
  • FIG. 1 there is shown an indexing device of a beam 100 through a hole 101 of the beam.
  • This device comprises a sleeve 1 of vertical axis 3, equipped at its upper end with a support ring 5 having an upper face 7 forming a support for the spar 100.
  • a piston 9 is mounted inside the sleeve 1 to slide along the axis 3.
  • the sleeve 1 is internally equipped with two bearings 11 whose internal diameter is substantially equal to the external diameter of the piston 9.
  • a seal 13 is disposed at the upper end of the sleeve 1.
  • the piston 9 can slide relative to the sleeve 1 between a low position retracted inside this sleeve and a high deployed position in which it is in abutted by a shoulder 10 against a lower bearing face 12 of the lower bearing 11. In this deployed position, the piston 9 extends projecting from the upper bearing face 7 of the sleeve 1 by an end portion forming an indexing pin 15.
  • the pin 15 is traversed right through by a transverse notch 17 formed in an axial plane containing the axis 3.
  • Two identical clamping jaws 19 and 21 are mounted inside this notch to pivot around respective axes 23 and 25 integral with the pin 15 and passing through the notch 17 perpendicularly to the plane of the latter, as is better visible in FIGS. 2 and 3.
  • the jaws 19 and 21 can pivot around their respective axes 23 and 25 between an inactive position
  • the pivoting of the locking jaws 19, 21 is controlled by a slide 31 mounted in an axial bore 32 of the piston 9 opening on the one hand at the lower end of the piston 9 and on the other hand in the notch 17 of this piston .
  • the axial bore 32 of the piston 9 is equipped with a pad 35 whose inside diameter is substantially equal to the outside diameter of the slide 31.
  • the slide 31 has an active part 33 in the shape of a needle, the external surface of which forms two inclined ramps 34, 36 arranged to cooperate in the manner of a cam with facing faces 18, 20 of the jaws 19, 21.
  • each jaw 19, 21 is equipped with a link 37, 38 articulated by one of its ends to the corresponding jaw and, by its other end, to an axis 39 mounted to slide in a slot 41 formed in the active part 33 of the slide 31 in a substantially axial direction.
  • the sliding of the slide 31 inside the piston 9 is limited below by a transverse finger 47 integral with the piston 9 and extending inside the bore 32 of this piston to pass through an associated lumen 49 of the slide 31 formed transversely along a substantially axial direction.
  • the axial displacements of the piston 9 inside the sleeve 1 on the one hand and of the slide 31 inside the piston 9 on the other hand are controlled by common drive means comprising an actuating member of the slide 31
  • This actuating member is here constituted by a jack 50 whose rod 51 is axially coupled to the slide 31 and whose body 53 is rigidly fixed to the sleeve 1 by means of a tubular connector 55.
  • the control means comprise in addition a first return spring 57 disposed between the underside 45 of the piston 9 and a ring 59 integral with the slide 31, so as to return the piston 9 to its deployed position.
  • a second return spring 61 is disposed between a ring 63 integral with the slide 31 and the jack body 53 to return the slide 31 to its locking position of the jaws 19, 21 against the first return spring 57.
  • the rings 59 and 63 are adjustable and screwed one against the other on a threaded lower part 58 of the slide 31. But it is also possible to provide a simple shoulder on the slide 31, forming a support for each of the springs 57 and 61.
  • the slide 31 then continues only its ascending slide under the effect of the second return spring 61, against the first return spring 57 which is thus progressively compressed.
  • This progressive compression of the spring 57 results in a relative sliding of the slide 31 inside the piston 9, so that the active part 33 of the slide 31 comes into contact with the jaws 19, 21 and cooperates by its surfaces. cams 34, 36 with the facing faces 18, 20 of these jaws to cause them to pivot towards their locked position against the beam 100.
  • the pivoting of the jaws 19, 21 is symbolized by the arrows 51 in FIG. note that, in this position, the active part 33 of the slide 31 forms a wedge opposing positively the pivoting of the jaws 19, 21 in the direction of their unlocking position.
  • the slide 31 is held in its locking position by the second return spring 61.
  • a positive locking of the jaws 19, 21 is therefore obtained without the actuator rod 51 exerting any force on the slide 31. From this In this way, the indexing device can be easily transported from one station to another without being connected to its power source and without the jaws 19, 21 being unlocked.
  • the jack rod 51 exerts on the slide 31 a downward traction force, as illustrated by the arrow 52 in FIG. 4.
  • the second return spring 61 is then gradually compressed while the first return spring 57 is gradually decompressed by keeping the piston 9 in abutment against the lower support face 12 of the pad 11 of the sleeve 1, that is to say by maintaining the indexing pin 15 in deployed position.
  • the axis 39 slides inside the notch 41 until it comes into abutment against the upper end of this notch.
  • the axis 39 is then driven downwards with the slide 31 which therefore exerts a tensile force on the links 37, 38, thus causing the jaws 19, 21 to pivot towards their unlocking position.
  • transverse notch has been described in the slide to cooperate with a transverse finger passing through the piston internally, in order to constitute a stop for the sliding of the pusher relative to the piston in the jaw rusting position.
  • any other axial connecting member of the slide with the piston it is also possible to produce any other axial connecting member of the slide with the piston.
  • an axial connection can be made by simple abutment of two shoulders arranged opposite one another on the piston on the one hand and the pusher on the other hand.
  • jaws mounted on the indexing pin have been described for pivoting about axes perpendicular to an axial plane of the piston, it is also possible to produce jaws mounted for pivoting around axes substantially parallel to the axis of the piston or also mounted to slide transversely to this axis between a position retracted inside the notch of the piston and a position deployed laterally.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Positioning Apparatuses (AREA)
  • Manipulator (AREA)

Abstract

A device for indexing a part (100) through a hole (101) in said part comprises a sleeve (1) with an upper surface (7) defining a bearing surface for the part (100), a piston (9) mounted in the sleeve (1) so as to slide under the control of driving means between a retracted position in the sleeve (1) and an extended position in which it protrudes from the upper bearing surface (7) of the sleeve (1) by an end portion forming an indexing pin (15), a clamping jaw (19, 21) for clamping the part (100) on the upper bearing surface (7) of the sleeve (1) and movably mounted on the centering pin, and means (33, 37) for controlling the jaw (19, 21), including a sliding member (31) mounted in an axial bore (32) of the piston (9) and having a camming end portion.

Description

Dispositif d'indexation d'une pièce à travers un trou de cette pièce. Device for indexing a part through a hole in this part.
La présente invention concerne un dispositif d'indexation d'une pièce, telle qu'un élément de carrosse¬ rie automobile, à travers un trou de cette pièce.The present invention relates to a device for indexing a part, such as an automobile body element, through a hole in this part.
Dans le domaine de l'assemblage des carrosseries automobiles, on cherche souvent à indexer avec précision deux pièces l'une par rapport à l'autre en vue de leur assemblage par exemple par soudage. Selon une technique courante, l'une au moins des pièces à assembler est indexée avec précision sur un organe suppor . Cet organe peut être fixe par rapport au poste d'assemblage ou mobile pour constituer une palette déplaçable de poste en poste. Pour certaines pièces, telles que les longerons, on réalise préalablement dans la pièce un trou à travers lequel devra être assuré l'indexage. L'organe support destiné à recevoir la pièce est alors équipé d'un pion en saillie qui pénètre dans le trou lorsque la pièce est mise en place.In the field of assembly of automobile bodies, it is often sought to index two parts with precision with respect to one another with a view to their assembly, for example by welding. According to a common technique, at least one of the parts to be assembled is precisely indexed on a support member. This member can be fixed relative to the assembly station or mobile to constitute a pallet that can be moved from station to station. For certain parts, such as the side members, a hole is made in the room beforehand through which indexing must be ensured. The support member intended to receive the part is then equipped with a projecting pin which enters the hole when the part is put in place.
Lors de l'opération d'assemblage, la pièce subit des déformations dues à des contraintes mécaniques (défauts de positionnement des différentes pièces assemblées, etc.) ou thermiques (soudage, etc.), de sorte qu'il peut être difficile, voire impossible, de retirer les pièces assem¬ blées des organes supports associés après cette opération d'assemblage.During the assembly operation, the part undergoes deformations due to mechanical stresses (positioning faults of the various assembled parts, etc.) or thermal stresses (welding, etc.), so that it can be difficult, even impossible to remove the assembled parts from the associated support members after this assembly operation.
Pour cette raison, il a été réalisé un dispositif plus sophistiqué dans lequel le pion est monté coulissant dans un manchon fixe faisant corps avec l'organe support. Ainsi, après l'opération d'assemblage, le pion est rétracté à l'intérieur du manchon et libère donc la pièce qui peut être aisément séparée de l'organe support. De plus, ce genre de dispositif est généralement équipé de moyens de verrouillage de la pièce sur une face supérieure d'appui du manchon à l'intérieur duquel coulisse le pion rétractable. Actuellement, ces moyens de verrouil- lage sont constitués par une mâchoire montée pivotante sur l'organe support autour d'un axe adjacent à la face supérieure d'appui du manchon. Il est donc nécessaire de ménager dans la pièce un second trou pour permettre le passage de la mâchoire de verrouillage, ce qui d'une part complique la fabrication de la pièce et d'autre part en diminue les caractéristiques mécaniques.For this reason, a more sophisticated device has been produced in which the pin is slidably mounted in a fixed sleeve integral with the support member. Thus, after the assembly operation, the pin is retracted inside the sleeve and therefore releases the part which can be easily separated from the support member. In addition, this type of device is generally equipped with means for locking the part on an upper support face of the sleeve inside which the retractable pin slides. Currently, these means of locking lage consist of a jaw pivotally mounted on the support member about an axis adjacent to the upper bearing face of the sleeve. It is therefore necessary to provide a second hole in the part to allow the passage of the locking jaw, which on the one hand complicates the manufacture of the part and on the other hand reduces its mechanical characteristics.
Un but de l'invention est de réaliser un disposi¬ tif d'indexation d'une pièce à travers un trou de cette pièce, possédant un pion d'indexation rétractable et un moyen de verrouillage de la pièce sur le dispositif ne nécessitant pas la réalisation d'un trou supplémentaire dans la pièce.An object of the invention is to provide a device for indexing a part through a hole in this part, having a retractable indexing pin and a means for locking the part on the device which does not require the making an additional hole in the room.
L'invention a donc pour objet un dispositif d'indexation d'une pièce à travers un trou de cette pièce, comportant un manchon ayant une face supérieure formant un appui pour la pièce, un piston monté dans le manchon pour coulisser sous l'effet de moyens d'entraînement entre une position rétractée à l'intérieur du manchon et une position déployée dans laquelle il s'étend en saillie de la face supérieure d'appui du manchon par une portion d'extrémité formant un pion d'indexation, et une mâchoire de bridage de la pièce sur la face supérieure d'appui du manchon, montée mobile sur le pion d'indexation pour se déplacer sous l'effet de moyens de commande entre une position active dans laquelle elle forme une butée de bridage pour la pièce et une position inactive dans laquelle elle permet un passage libre du pion d'indexation à travers le trou de la pièce. Selon l'invention, les moyens de commande de la mâchoire comportent un coulisseau monté dans un alésage axial du piston pour coulisser sous l'effet de moyens d'entraînement entre une première position dans laquelle il assure le verrouillage de la mâchoire dans sa position active au moyen d'une partie active formant came, et une seconde position dans laquelle il libère le verrouillage de cette mâchoire.The invention therefore relates to a device for indexing a part through a hole in this part, comprising a sleeve having an upper face forming a support for the part, a piston mounted in the sleeve to slide under the effect drive means between a retracted position inside the sleeve and a deployed position in which it extends projecting from the upper bearing face of the sleeve by an end portion forming an indexing pin, and a clamping jaw of the part on the upper support face of the sleeve, movably mounted on the indexing pin to move under the effect of control means between an active position in which it forms a clamping stop for the part and an inactive position in which it allows free passage of the indexing pin through the hole in the part. According to the invention, the jaw control means comprise a slide mounted in an axial bore of the piston to slide under the effect of drive means between a first position in which it ensures the locking of the jaw in its active position by means of an active part forming a cam, and a second position in which it releases the locking of this jaw.
Ainsi, on réalise une indexation et un verrouil¬ lage de la pièce sur le dispositif, sans qu'il soit nécessaire de ménager dans cette pièce un trou autre que le trou d'indexation. En position de verrouillage la partie active du coulisseau assure seule le verrouillage de la mâchoire par effet de came, sans qu'aucun effort ne soit exercé sur les moyens d'entraînement du coulisseau. Avantageusement, la mâchoire est montée sur le pion d'indexation pour pivoter autour d'un axe sensiblement perpendiculaire à un plan axial du piston.Thus, indexing and locking the part on the device are carried out, without it being necessary to provide a hole in this part other than the indexing hole. In the locking position, the active part of the slider alone ensures the locking of the jaw by cam effect, without any force being exerted on the driving means of the slider. Advantageously, the jaw is mounted on the indexing pin to pivot around an axis substantially perpendicular to an axial plane of the piston.
De préférence alors, le dispositif comporte deux mâchoires possédant des faces en regard l'une de l'autre avec lesquelles coopèrent la partie active du coulisseau. Les moyens de commande de la mâchoire comportent une biellette de rappel articulée par une de ses extrémités à la mâchoire et par son autre extrémité à un axe monté pour coulisser dans une lumière axiale du coulisseau. Selon une caractéristique avantageuse de l'inven¬ tion, les moyens d'entraînement du piston et du coulisseau sont communs et comportent un organe d'actionnement du coulisseau monté entre le manchon et le coulisseau, un premier ressort de rappel disposé entre le piston et le manchon pour rappeler le piston vers sa position déployée, et des organes de butée axiale ménagés sur le piston d'une part et sur le coulisseau d'autre part pour assurer un entraînement axial du piston par le coulisseau vers sa position rétractée lorsque le coulisseau est dans sa position de déverrouillage de la mâchoire par rapport au piston.Preferably then, the device comprises two jaws having faces opposite one another with which the active part of the slide cooperates. The jaw control means comprise a return link articulated by one of its ends to the jaw and by its other end to an axis mounted to slide in an axial slot of the slide. According to an advantageous characteristic of the invention, the means for driving the piston and the slide are common and comprise a member for actuating the slide mounted between the sleeve and the slide, a first return spring disposed between the piston and the sleeve for returning the piston to its deployed position, and axial stop members formed on the piston on the one hand and on the slide on the other hand to ensure axial drive of the piston by the slide towards its retracted position when the slide is in its unlocking position of the jaw relative to the piston.
Avantageusement alors, les moyens d'entraînement du piston et du coulisseau comportent un second ressort de rappel disposé entre le manchon et le coulisseau pour rappeler le coulisseau vers sa position de verrouillage de la mâchoire.Advantageously then, the means for driving the piston and the slide comprise a second return spring disposed between the sleeve and the slide to return the slide to its locked position. jaw.
D'autres caractéristiques et avantages de l'in¬ vention apparaîtront à la lecture de la description qui suit d'un mode de réalisation particulier et non limitatif, en liaison avec les figures en annexe, parmi lesquelles :Other characteristics and advantages of the invention will appear on reading the following description of a particular and non-limiting embodiment, in conjunction with the appended figures, among which:
- la figure 1 est une vue en coupe par un plan axial d'un dispositif d'indexation conforme à l'invention, le pion d'indexation étant en position déployée et les mâchoires de verrouillage étant en position active ; - la figure 2 est une vue de détail de la zone supérieure du dispositif de la figure 1 ;- Figure 1 is a sectional view through an axial plane of an indexing device according to the invention, the indexing pin being in the deployed position and the locking jaws being in the active position; - Figure 2 is a detail view of the upper area of the device of Figure 1;
- la figure 3 est une vue en coupe selon la ligne III-III de la figure 2 ;- Figure 3 is a sectional view along line III-III of Figure 2;
- la figure 4 est une vue en coupe selon la ligne IV-IV de la figure 1, les mâchoires de verrouillage étant en position inactive et le pion d'indexation étant en cours de rétraction à l'intérieur du manchon.- Figure 4 is a sectional view along line IV-IV of Figure 1, the locking jaws being in the inactive position and the indexing pin being retracted inside the sleeve.
A la figure 1, on a représenté un dispositif d'indexation d'un longeron 100 à travers un trou 101 de ce longeron. Ce dispositif comporte un manchon 1 d'axe vertical 3, équipé à son extrémité supérieure d'une bague d'appui 5 ayant une face supérieure 7 formant un appui pour le longeron 100.In Figure 1, there is shown an indexing device of a beam 100 through a hole 101 of the beam. This device comprises a sleeve 1 of vertical axis 3, equipped at its upper end with a support ring 5 having an upper face 7 forming a support for the spar 100.
Un piston 9 est monté à l'intérieur du manchon 1 pour coulisser selon l'axe 3. A cet effet, le manchon 1 est équipé intérieurement de deux coussinets 11 dont le diamètre intérieur est sensiblement égal au diamètre extérieur du piston 9. En outre, un joint d'étanchéité 13 est disposé à l'extrémité supérieure du manchon 1. Le piston 9 peut coulisser par rapport au manchon 1 entre une position basse rétractée à l'intérieur de ce manchon et une position haute déployée dans laquelle il est en butée par un épaulement 10 contre une face inférieure d'appui 12 du coussinet inférieur 11. Dans cette position déployée, le piston 9 s'étend en saillie de la face supérieure d'appui 7 du manchon 1 par une portion d'extrémité formant un pion d'indexation 15.A piston 9 is mounted inside the sleeve 1 to slide along the axis 3. For this purpose, the sleeve 1 is internally equipped with two bearings 11 whose internal diameter is substantially equal to the external diameter of the piston 9. In addition , a seal 13 is disposed at the upper end of the sleeve 1. The piston 9 can slide relative to the sleeve 1 between a low position retracted inside this sleeve and a high deployed position in which it is in abutted by a shoulder 10 against a lower bearing face 12 of the lower bearing 11. In this deployed position, the piston 9 extends projecting from the upper bearing face 7 of the sleeve 1 by an end portion forming an indexing pin 15.
Le pion 15 est traversé de part en part par une encoche transversale 17 ménagée selon un plan axial contenant l'axe 3. Deux mâchoires de bridage 19 et 21 identiques sont montées à l'intérieur de cette encoche pour pivoter autour d'axes respectifs 23 et 25 solidaires du pion 15 et traversant l'encoche 17 perpendiculairement au plan de celle-ci, comme cela est mieux visible aux figures 2 et 3. Les mâchoires 19 et 21 peuvent pivoter autour de leurs axes respectifs 23 et 25 entre une position inactiveThe pin 15 is traversed right through by a transverse notch 17 formed in an axial plane containing the axis 3. Two identical clamping jaws 19 and 21 are mounted inside this notch to pivot around respective axes 23 and 25 integral with the pin 15 and passing through the notch 17 perpendicularly to the plane of the latter, as is better visible in FIGS. 2 and 3. The jaws 19 and 21 can pivot around their respective axes 23 and 25 between an inactive position
(représentée à la figure 4) dans laquelle elles s'étendent verticalement à l'intérieur de l'encoche 17 du pion 15 pour permettre un passage libre du pion 15 à travers le trou 101 du longeron, et une position active (représentée aux figures 1 à 3) dans laquelle elles s'étendent horizontale¬ ment et présentent une partie qui s'étend en saillie latérale du pion 15 et possède des faces inférieures d'appui 27, 29 qui plaquent le longeron 100 contre la face d'appui 7 du manchon et forment une butée s'opposant au soulèvement du longeron 100.(shown in Figure 4) in which they extend vertically inside the notch 17 of the pin 15 to allow free passage of the pin 15 through the hole 101 of the beam, and an active position (shown in the figures 1 to 3) in which they extend horizontally and have a part which projects in lateral projection from the pin 15 and has lower bearing faces 27, 29 which press the side member 100 against the bearing face 7 of the sleeve and form a stop opposing the lifting of the beam 100.
Le pivotement des mâchoires de verrouillage 19, 21 est commandé par un coulisseau 31 monté dans un perçage axial 32 du piston 9 débouchant d'une part à l'extrémité inférieure du piston 9 et d'autre part dans l'encoche 17 de ce piston. Pour faciliter le coulissement du coulisseau 31 à l'intérieur du piston 9, le perçage axial 32 du piston 9 est équipé d'un coussinet 35 dont le diamètre intérieur est sensiblement égal au diamètre extérieur du coulisseau 31. A son extrémité supérieure, le coulisseau 31 possède une partie active 33 en forme de pointeau dont la surface extérieure forme deux rampes inclinées 34, 36 agencées pour coopérer à la manière d'une came avec des faces en regard 18, 20 des mâchoires 19, 21. Le coulisseau 31 peut ainsi coulisser entre une position inférieure dans laquelle la partie active 33 du coulisseau 31 est écartée des mâchoires 19, 21 et libère le verrouillage de ces mâchoires, et une position supérieure dans laquelle la partie active 33 du coulisseau 31 assure le verrouillage des mâchoires 19, 21 au moyen de ses surfaces de came 34, 36 et forme un coin s'opposant au pivotement des mâchoires 19, 21 vers leur position de déverrouillage. De plus, pour assurer le pivotement des mâchoires 19, 21 vers leur position de déverrouillage, chaque mâchoire 19, 21 est équipée d'une biellette 37, 38 articulée par une de ses extrémités à la mâchoire correspondante et, par son autre extrémité, à un axe 39 monté pour coulisser dans une lumière 41 ménagée dans la partie active 33 du coulisseau 31 selon une direction sensiblement axiale. Le coulissement du coulisseau 31 à l'intérieur du piston 9 est limité inférieurement par un doigt transversal 47 solidaire du piston 9 et s'étendant à l'intérieur du perçage 32 de ce piston pour traverser une lumière associée 49 du coulisseau 31 ménagée transversalement selon une direction sensiblement axiale.The pivoting of the locking jaws 19, 21 is controlled by a slide 31 mounted in an axial bore 32 of the piston 9 opening on the one hand at the lower end of the piston 9 and on the other hand in the notch 17 of this piston . To facilitate the sliding of the slide 31 inside the piston 9, the axial bore 32 of the piston 9 is equipped with a pad 35 whose inside diameter is substantially equal to the outside diameter of the slide 31. At its upper end, the slide 31 has an active part 33 in the shape of a needle, the external surface of which forms two inclined ramps 34, 36 arranged to cooperate in the manner of a cam with facing faces 18, 20 of the jaws 19, 21. The slide 31 can thus slide between a lower position in which the active part 33 of the slide 31 is spaced from the jaws 19, 21 and releases the locking of these jaws, and an upper position in which the active part 33 of the slide 31 ensures the locking of the jaws 19, 21 by means of its surfaces cam 34, 36 and forms a wedge opposing the pivoting of the jaws 19, 21 towards their unlocking position. In addition, to ensure the pivoting of the jaws 19, 21 towards their unlocking position, each jaw 19, 21 is equipped with a link 37, 38 articulated by one of its ends to the corresponding jaw and, by its other end, to an axis 39 mounted to slide in a slot 41 formed in the active part 33 of the slide 31 in a substantially axial direction. The sliding of the slide 31 inside the piston 9 is limited below by a transverse finger 47 integral with the piston 9 and extending inside the bore 32 of this piston to pass through an associated lumen 49 of the slide 31 formed transversely along a substantially axial direction.
Les déplacements axiaux du piston 9 à l'intérieur du manchon 1 d'une part et du coulisseau 31 à l'intérieur du piston 9 d'autre part sont commandés par des moyens d'entraînement communs comportant un organe d'actionnement du coulisseau 31. Cet organe d'actionnement est ici constitué par un vérin 50 dont la tige 51 est attelée axialement au coulisseau 31 et dont le corps 53 est rigidement fixé au manchon 1 par l'intermédiaire d'un raccord tubulaire 55. Les moyens de commande comportent en outre un premier ressort de rappel 57 disposé entre la face inférieure 45 du piston 9 et une bague 59 solidaire du coulisseau 31, de façon à rappeler le piston 9 vers sa position déployée. Un second ressort de rappel 61 est disposé entre une bague 63 solidaire du coulisseau 31 et le corps de vérin 53 pour rappeler le coulisseau 31 vers sa position de verrouillage des mâchoires 19, 21 à l'encontre du premier ressort de rappel 57. Dans l'exemple illustré aux figures, les bagues 59 et 63 sont réglables et vissées l'une contre l'autre sur une partie inférieure filetée 58 du coulisseau 31. Mais il est également possible de prévoir un simple épaulement sur le coulisseau 31, formant un appui pour chacun des ressorts 57 et 61.The axial displacements of the piston 9 inside the sleeve 1 on the one hand and of the slide 31 inside the piston 9 on the other hand are controlled by common drive means comprising an actuating member of the slide 31 This actuating member is here constituted by a jack 50 whose rod 51 is axially coupled to the slide 31 and whose body 53 is rigidly fixed to the sleeve 1 by means of a tubular connector 55. The control means comprise in addition a first return spring 57 disposed between the underside 45 of the piston 9 and a ring 59 integral with the slide 31, so as to return the piston 9 to its deployed position. A second return spring 61 is disposed between a ring 63 integral with the slide 31 and the jack body 53 to return the slide 31 to its locking position of the jaws 19, 21 against the first return spring 57. In the example illustrated in the figures, the rings 59 and 63 are adjustable and screwed one against the other on a threaded lower part 58 of the slide 31. But it is also possible to provide a simple shoulder on the slide 31, forming a support for each of the springs 57 and 61.
En service, le coulisseau 31 et le piston 9 sont initialement maintenus vers le bas par la tige de vérin 51 à l'encontre du ressort de rappel 61, le doigt 47 du piston 9 étant rappelé en butée contre l'extrémité supérieure de la lumière 49 du coulisseau 31 par le ressort 57.In service, the slide 31 and the piston 9 are initially held down by the jack rod 51 against the return spring 61, the finger 47 of the piston 9 being returned in abutment against the upper end of the light 49 of the slide 31 by the spring 57.
L'effort de traction exercé par la tige 51 est relâché progressivement, de sorte que le second ressort de rappel 61 repousse la bague 63 du coulisseau 31 vers le haut. Il se produit ainsi un déplacement ascendant du coulisseau 31 et du piston 9 en un seul bloc dans le sens indiqué par la flèche 50 de la figure 1. Lorsque l'épau¬ lement 10 du piston 9 parvient en butée contre la face inférieure d'appui 12 du coussinet inférieur 11 du manchon 1, le pion d'indexation 15 est dans sa position déployée et s'étend donc en saillie de la face supérieure d'appui 7 de la bague 5 du manchon 1.The tensile force exerted by the rod 51 is gradually released, so that the second return spring 61 pushes the ring 63 of the slide 31 upwards. There is thus an upward movement of the slide 31 and of the piston 9 in a single block in the direction indicated by the arrow 50 in FIG. 1. When the shoulder 10 of the piston 9 comes into abutment against the underside of support 12 of the lower pad 11 of the sleeve 1, the indexing pin 15 is in its deployed position and therefore extends projecting from the upper support face 7 of the ring 5 of the sleeve 1.
Le coulisseau 31 poursuit alors seul son coulis- sèment ascendant sous l'effet du second ressort de rappel 61, à l'encontre du premier ressort de rappel 57 qui est ainsi progressivement comprimé. Cette compression progres¬ sive du ressort 57 se traduit par un coulissement relatif du coulisseau 31 à l'intérieur du piston 9, de sorte que la partie active 33 du coulisseau 31 entre en contact avec les mâchoires 19, 21 et coopère par ses surfaces de cames 34, 36 avec les faces en regard 18, 20 de ces mâchoires pour provoquer leur pivotement vers leur position de verrouil¬ lage contre le longeron 100. Le pivotement des mâchoires 19, 21 est symbolisé par les flèches 51 de la figure 1. On notera que, dans cette position, la partie active 33 du coulisseau 31 forme un coin s'opposant positivement au pivotement des mâchoires 19, 21 en direction de leur position de déverrouillage. En outre, le coulisseau 31 est maintenu dans sa position de verrouillage par le second ressort de rappel 61. On obtient donc un verrouillage positif des mâchoires 19, 21 sans que la tige de vérin 51 exerce un effort quelconque sur le coulisseau 31. De cette manière, le dispositif d'indexation peut être aisément transporté d'un poste à une autre sans être raccordé à sa source d'alimentation et sans que les mâchoires 19, 21 ne soient déverrouillées.The slide 31 then continues only its ascending slide under the effect of the second return spring 61, against the first return spring 57 which is thus progressively compressed. This progressive compression of the spring 57 results in a relative sliding of the slide 31 inside the piston 9, so that the active part 33 of the slide 31 comes into contact with the jaws 19, 21 and cooperates by its surfaces. cams 34, 36 with the facing faces 18, 20 of these jaws to cause them to pivot towards their locked position against the beam 100. The pivoting of the jaws 19, 21 is symbolized by the arrows 51 in FIG. note that, in this position, the active part 33 of the slide 31 forms a wedge opposing positively the pivoting of the jaws 19, 21 in the direction of their unlocking position. In addition, the slide 31 is held in its locking position by the second return spring 61. A positive locking of the jaws 19, 21 is therefore obtained without the actuator rod 51 exerting any force on the slide 31. From this In this way, the indexing device can be easily transported from one station to another without being connected to its power source and without the jaws 19, 21 being unlocked.
Lorsque l'on souhaite libérer le longeron 100, la tige de vérin 51 exerce sur le coulisseau 31 un effort de traction vers le bas, comme cela est illustré par la flèche 52 de la figure 4. Le second ressort de rappel 61 est alors progressivement comprimé tandis que le premier ressort de rappel 57 est progressivement décomprimé en maintenant le piston 9 en appui contre la face inférieure d'appui 12 du coussinet 11 du manchon 1, c'est-à-dire en maintenant le pion d'indexation 15 en position déployée. Il se produit donc un coulissement relatif du coulisseau 31 à l'intérieur du piston 9 vers le bas, de sorte que la partie active 33 du coulisseau 31 s'écarte des mâchoires 19, 21. L'axe 39 coulisse à l'intérieur de l'encoche 41 jusqu'à ce qu'il parvienne en butée contre l'extrémité supérieure de cette encoche. L'axe 39 est alors entraîné vers le bas avec le coulisseau 31 qui exerce donc un effort de traction sur les biellettes 37, 38, provoquant ainsi le pivotement des mâchoires 19, 21 vers leur position de déverrouillage.When it is desired to release the beam 100, the jack rod 51 exerts on the slide 31 a downward traction force, as illustrated by the arrow 52 in FIG. 4. The second return spring 61 is then gradually compressed while the first return spring 57 is gradually decompressed by keeping the piston 9 in abutment against the lower support face 12 of the pad 11 of the sleeve 1, that is to say by maintaining the indexing pin 15 in deployed position. There is therefore a relative sliding of the slide 31 inside the piston 9 downwards, so that the active part 33 of the slide 31 moves away from the jaws 19, 21. The axis 39 slides inside the notch 41 until it comes into abutment against the upper end of this notch. The axis 39 is then driven downwards with the slide 31 which therefore exerts a tensile force on the links 37, 38, thus causing the jaws 19, 21 to pivot towards their unlocking position.
Lorsque le doigt transversal 47 du piston 9 parvient en butée contre l'extrémité supérieure de l'enco¬ che 49 du coulisseau 31, le piston 9 est entraîné axiale- ment par le coulisseau 31 vers le bas, c'est-à-dire vers sa position rétractée, comme cela est symbolisé par la flèche 53 de la figure 4, et libère ainsi totalement le longeron 100.When the transverse finger 47 of the piston 9 comes into abutment against the upper end of the enco¬ che 49 of the slider 31, the piston 9 is driven axially by the slider 31 downwards, that is to say towards its retracted position, as symbolized by the arrow 53 of FIG. 4, and thus completely releases the beam 100.
L'invention n'est pas limitée au mode de réalisa¬ tion qui vient d'être décrit mais englobe au contraire toute variante reprenant, avec des moyens équivalents, les caractéristiques essentielles énoncées ci-dessus.The invention is not limited to the embodiment which has just been described but on the contrary includes any variant incorporating, with equivalent means, the essential characteristics set out above.
En particulier, bien que l'on ait décrit des moyens d'entraînement du piston et du coulisseau comportant un premier ressort de rappel disposé entre le piston et le coulisseau pour rappeler le piston vers sa position déployée, il est également possible de disposer ce ressort entre le piston et le manchon pour assurer la même fonc¬ tion.In particular, although we have described means for driving the piston and the slide comprising a first return spring disposed between the piston and the slide to return the piston to its deployed position, it is also possible to arrange this spring between the piston and the sleeve to ensure the same function.
Par ailleurs, bien que l'on ait décrit une encoche transversale ménagée dans le coulisseau pour coopérer avec un doigt transversal traversant intérieure¬ ment le piston pour constituer une butée au coulissement du poussoir par rapport au piston dans la position de déver¬ rouillage des mâchoires, il est également possible de réaliser tout autre organe de liaison axiale du coulisseau avec le piston. En particulier, on pourra réaliser une liaison axiale par simple butée de deux épaulements ménagés en regard l'un de l'autre sur le piston d'une part et le poussoir d'autre part. Enfin, bien que l'on ait décrit des mâchoires montées sur le pion d'indexation pour pivoter autour d'axes perpendiculaires à un plan axial du piston, il est égale¬ ment possible de réaliser des mâchoires montées pour pivoter autour d'axes sensiblement parallèles à l'axe du piston ou encore montées pour coulisser transversalement à cet axe entre une position rétractée à l'intérieur de l'encoche du piston et une position déployée latéralement. Furthermore, although a transverse notch has been described in the slide to cooperate with a transverse finger passing through the piston internally, in order to constitute a stop for the sliding of the pusher relative to the piston in the jaw rusting position. , it is also possible to produce any other axial connecting member of the slide with the piston. In particular, an axial connection can be made by simple abutment of two shoulders arranged opposite one another on the piston on the one hand and the pusher on the other hand. Finally, although jaws mounted on the indexing pin have been described for pivoting about axes perpendicular to an axial plane of the piston, it is also possible to produce jaws mounted for pivoting around axes substantially parallel to the axis of the piston or also mounted to slide transversely to this axis between a position retracted inside the notch of the piston and a position deployed laterally.

Claims

REVENDICATIONS
1. Dispositif d'indexation d'une pièce (100) à travers un trou (101) de cette pièce, comportant un manchon (1) ayant une face supérieure (7) formant un appui pour la pièce (100) , un piston (9) monté dans le manchon (1) pour coulisser sous l'effet de moyens d'entraînement entre une position rétractée à l'intérieur du manchon (1) et une position déployée dans laquelle il s'étend en saillie de la face supérieure d'appui (7) du manchon (1) par une portion d'extrémité formant un pion d'indexation (15), et une mâchoire de bridage (19, 21) de la pièce (100) sur la face supérieure d'appui (7) du manchon (1), montée mobile sur le pion d'indexation (15) pour se déplacer sous l'effet de moyens de commande (33, 37) entre une position active dans laquelle elle forme une butée de bridage pour la pièce1. Device for indexing a part (100) through a hole (101) in this part, comprising a sleeve (1) having an upper face (7) forming a support for the part (100), a piston ( 9) mounted in the sleeve (1) to slide under the effect of drive means between a retracted position inside the sleeve (1) and a deployed position in which it extends projecting from the upper face d support (7) of the sleeve (1) by an end portion forming an indexing pin (15), and a clamping jaw (19, 21) of the part (100) on the upper support face ( 7) of the sleeve (1), movably mounted on the indexing pin (15) to move under the effect of control means (33, 37) between an active position in which it forms a clamping stop for the part
(100) et une position inactive dans laquelle elle permet un passage libre du pion d'indexation (15) à travers le trou(100) and an inactive position in which it allows free passage of the indexing pin (15) through the hole
(101) de la pièce (100) , caractérisé en ce que les moyens de commande de la mâchoire (19, 21) comportent un coulis- seau (31) monté dans un alésage axial (32) du piston (9) pour coulisser sous l'effet de moyens d'entraînement (51, 61) entre une première position dans laquelle il assure le verrouillage de la mâchoire (19, 21) dans sa position active au moyen d'une partie active (33) formant came, et une seconde position dans laquelle il libère le verrouil¬ lage de cette mâchoire.(101) of the part (100), characterized in that the control means of the jaw (19, 21) comprise a slide (31) mounted in an axial bore (32) of the piston (9) to slide under the effect of drive means (51, 61) between a first position in which it ensures the locking of the jaw (19, 21) in its active position by means of an active part (33) forming a cam, and a second position in which it releases the lock on this jaw.
2. Dispositif selon la revendication 1, caracté¬ risé en ce que la mâchoire (19, 21) est montée sur le pion d'indexation (15) pour pivoter autour d'un axe (23, 25) sensiblement perpendiculaire à un plan axial du piston (9) .2. Device according to claim 1, caracté¬ ized in that the jaw (19, 21) is mounted on the indexing pin (15) to pivot about an axis (23, 25) substantially perpendicular to an axial plane of the piston (9).
3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce qu'il comporte deux mâchoires (19, 21) possédant des faces (18, 20) en regard l'une de l'autre avec lesquelles coopèrent la partie active (33) du coulisseau (31) . 3. Device according to claim 1 or claim 2, characterized in that it comprises two jaws (19, 21) having faces (18, 20) facing each other with which the active part cooperate ( 33) of the slide (31).
4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les moyens de commande de la mâchoire (19, 21) comportent une biellette de rappel4. Device according to one of the preceding claims, characterized in that the jaw control means (19, 21) comprise a return link
(37, 39) articulée par une de ses extrémités à la mâchoire (19, 21) et par son autre extrémité à un axe (39) monté pour coulisser dans une lumière axiale (41) du coulisseau (31) .(37, 39) articulated by one of its ends to the jaw (19, 21) and by its other end to an axis (39) mounted to slide in an axial lumen (41) of the slide (31).
5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les moyens d'entraîne- ment du piston (9) et du coulisseau (31) sont communs et comportent un organe d'actionnement (51, 53) du coulisseau5. Device according to one of the preceding claims, characterized in that the means for driving the piston (9) and the slide (31) are common and comprise an actuating member (51, 53) of the slide
(31) monté entre le manchon (1) et le coulisseau (31) , un premier ressort de rappel (57) disposé entre le piston (9) et le manchon (1) pour rappeler le piston (9) vers sa position déployée, et des organes de butée axiale (47, 49) ménagés sur le piston (9) d'une part et sur le coulisseau (31) d'autre part pour assurer un entraînement axial du piston (9) par le coulisseau (31) vers sa position rétrac¬ tée lorsque le coulisseau (31) est dans sa position de déverrouillage de la mâchoire (19, 21) par rapport au piston (9) .(31) mounted between the sleeve (1) and the slide (31), a first return spring (57) disposed between the piston (9) and the sleeve (1) to return the piston (9) to its deployed position, and axial stop members (47, 49) formed on the piston (9) on the one hand and on the slide (31) on the other hand to ensure an axial drive of the piston (9) by the slide (31) towards its retracted position when the slide (31) is in its unlocking position of the jaw (19, 21) relative to the piston (9).
6. Dispositif selon la revendication 4, caracté¬ risé en ce que les moyens d'entraînement communs du piston (9) et du coulisseau (31) comportent un second ressort de rappel (61) disposé entre le manchon (1) et le coulisseau (31) pour rappeler le coulisseau (31) vers sa position de verrouillage de la mâchoire (19, 21) .6. Device according to claim 4, caracté¬ ized in that the common drive means of the piston (9) and the slide (31) comprise a second return spring (61) disposed between the sleeve (1) and the slide (31) to return the slider (31) to its jaw locking position (19, 21).
7. Dispositif selon la revendication 5 ou la revendication 6, caractérisé en ce que le premier ressort de rappel (57) est disposé entre le piston (9) et le coulisseau (31) . 7. Device according to claim 5 or claim 6, characterized in that the first return spring (57) is disposed between the piston (9) and the slide (31).
PCT/FR1996/000695 1995-05-12 1996-05-09 Device for indexing a part through a hole in said part WO1996035547A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9505669A FR2733930B1 (en) 1995-05-12 1995-05-12 DEVICE FOR INDEXING A PART THROUGH A HOLE OF THIS PART
FR95/05669 1995-05-12

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Publication Number Publication Date
WO1996035547A1 true WO1996035547A1 (en) 1996-11-14

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FR2755049A1 (en) * 1996-10-25 1998-04-30 Ragonot Compact gripping head for handling metal sheet
FR2757437A1 (en) * 1996-12-24 1998-06-26 Bruyn Gerard De PILOT CENTERING AND TIGHTENING TOOL
WO1998028110A1 (en) * 1996-12-24 1998-07-02 Menage, Christine Pilot tool for centring and clamping
US6186517B1 (en) * 1996-12-24 2001-02-13 Michel Beffrieu Pilot tool for centering and clamping
EP0868966A2 (en) * 1997-04-03 1998-10-07 Horst Witte Entwicklungs- und Vertriebs-KG Coupling of parallelpiped receivers for clamping workpieces
EP0868966A3 (en) * 1997-04-03 1998-11-18 Horst Witte Entwicklungs- und Vertriebs-KG Coupling of parallelpiped receivers for clamping workpieces
US6059485A (en) * 1997-04-03 2000-05-09 Horst Witt Entwicklungs- Und Vertriebs-Kg Coupling for parallelepiped-shaped mounting components for chucking workpieces
EP0911112A1 (en) * 1997-10-21 1999-04-28 TÜNKERS MASCHINENBAU GmbH Fluid pressure actuated combined centering and clamping device, in particular for use in the manufacture of motor vehicle bodies in the automotive industry
US6102383A (en) * 1997-10-21 2000-08-15 Tunkers Maschinenbau Gmbh Combined centering and clamping device for use in the automotive industry
EP0913588A3 (en) * 1997-10-31 2001-10-10 Kabushiki Kaisha Kosmek Clamping apparatus
US7815176B2 (en) 2003-09-11 2010-10-19 Phd, Inc. Lock mechanism for pin clamp assembly
DE102004041757A1 (en) * 2004-08-28 2006-03-02 Werner Drobek Fastening unit for garage door, has locking units, which moves through openings in component up to their positive intervention in recesses after arrest of movement of clamping part within component based on continuous movement of bolt
DE102004041757B4 (en) * 2004-08-28 2011-07-28 Drobek, Werner, 97346 connecting element
EP1645366A1 (en) * 2004-10-09 2006-04-12 Staudinger Forschungs- und Entwicklungs GmbH & Co. KG Clamping device
EP1830983A2 (en) * 2004-12-15 2007-09-12 PHD, Inc. Pin clamp assembly
EP1830983A4 (en) * 2004-12-15 2008-06-18 Phd Inc Pin clamp assembly
US8413970B2 (en) 2007-06-19 2013-04-09 Phd, Inc. Pin clamp assembly
EP2164677A4 (en) * 2007-06-19 2017-12-27 PHD, Inc. Pin clamp assembly
US8376336B2 (en) 2008-06-18 2013-02-19 Phd, Inc. Strip off pin clamp
US8459626B2 (en) 2010-05-28 2013-06-11 Btm Corporation Pin clamp
WO2016037594A1 (en) * 2014-09-09 2016-03-17 ŠKODA AUTO a.s. Device for transporting a vehicle body on the production line

Also Published As

Publication number Publication date
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FR2733930A1 (en) 1996-11-15

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