EP0418145B1 - Pressure element for clamping workpieces - Google Patents

Pressure element for clamping workpieces Download PDF

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Publication number
EP0418145B1
EP0418145B1 EP90402498A EP90402498A EP0418145B1 EP 0418145 B1 EP0418145 B1 EP 0418145B1 EP 90402498 A EP90402498 A EP 90402498A EP 90402498 A EP90402498 A EP 90402498A EP 0418145 B1 EP0418145 B1 EP 0418145B1
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EP
European Patent Office
Prior art keywords
element according
clamping element
arm
movable part
members
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.)
Expired - Lifetime
Application number
EP90402498A
Other languages
German (de)
French (fr)
Other versions
EP0418145A1 (en
Inventor
André Carossino
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.)
Carossino Freres Dite Societe A Responsabilite Ltee Ste
Original Assignee
Carossino Freres Dite Societe A Responsabilite Ltee Ste
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 Carossino Freres Dite Societe A Responsabilite Ltee Ste filed Critical Carossino Freres Dite Societe A Responsabilite Ltee Ste
Publication of EP0418145A1 publication Critical patent/EP0418145A1/en
Application granted granted Critical
Publication of EP0418145B1 publication Critical patent/EP0418145B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B5/16—Details, e.g. jaws, jaw attachments
    • B25B5/163—Jaws or jaw attachments
    • 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
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/104—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element
    • B25B5/108—Arrangements for positively actuating jaws using screws with one screw and one clamping lever and one fulcrum element the screw contacting one of the ends of the lever

Definitions

  • the present invention relates to the members of a clamping element generally used to hold on the work table of a machine tool the parts which must be machined there.
  • clamping elements generally consist of a housing which is fixed to a work table by means of an assembly member cooperating with a cleat sliding in a groove of the work table and in which a movable part is arranged. rotation about a horizontal axis and provided with a toothed sector cooperating with an endless control screw, said moving part comprising a lever arm whose end comes to bear on the workpiece.
  • the present invention relates to a clamping element of the type described above in which one can adjust the position of the arm relative to the housing for performing blockages by acting up or down on the part to be blocked.
  • the invention is particularly remarkable in that the lever arm is removably mounted in the moving part allowing it to move in translation in a direction substantially perpendicular to the axis of rotation of the moving part.
  • This arrangement makes it possible to adjust the relative position of the arm relative to the housing in order to adapt it to the different use cases.
  • the clamping element comprises an arm shaped so as to be able to act by lifting by coming to bear under a part to be held.
  • the arm being removable, it is thus possible to have several arms for a single clamping element and it is therefore possible in particular to provide an arm acting by lifting and not by action downwards.
  • the clamping member element shown in Figures 1 to 4 consists of a housing 1 in which is disposed a part 2 movable in rotation about a horizontal axis; this rotating part 2 comprises a toothed sector 21 which cooperates with an endless control screw 4 disposed in a housing arranged at the rear of the housing 1 and which is fixed in this housing by means of a nut 5 and a washer 6.
  • This screw control comprises a hexagonal head 22 which projects from the housing and which allows its rotation by means of a key.
  • the moving part 2 comprises an arm 3 forming a lever, the free end of which is provided with a support pad 12.
  • the lever arm 3 is removably mounted in the rotary part 2 and can slide in the latter so as to carry out a translational movement perpendicular to the axis of rotation of the rotary part 2.
  • the arm 3 can be locked in the rotating part 2 in several relative positions.
  • the arm 3 has in its lower face recesses such as that shown in 23 which are distributed over its entire length; these recesses cooperate with a locking device 14 constituted for example by a ball mounted on a spring.
  • the moving part 2 has a cylindrical central recess 24 which is coaxial with the axis of rotation of the part 2 and there are two identical circular flanges 9 in this central recess 24 which have in cross section the shape of an L and which are mounted head to tail symmetrically as can be seen in particular in Figure 4 so as to provide between them a central housing for the arm 3.
  • the two flanges are assembled l 'one on the other by means of two screws 25 which each pass through one of the flanges and engage in a tapped hole in the other flange.
  • FIGS. 6A, 6B, and 6C which represent one of the flanges 9, the latter has a smooth through hole 26 perpendicular to one of the branches of the L and a tapped hole 27 which is arranged axially in the another branch of L.
  • Each flange has a shoulder 28 constituting a crown which comes to bear on the outside face of the housing 1.
  • a groove 29 is arranged in the crown 28; this groove 29 cooperates with a lug 17 arranged in the part 2 so as to ensure centering of the assembly of the two flanges 9 when they are assembled.
  • the two flanges due to their design, favor, on the one hand, an increase in the contact surfaces for the rotation of the moving part 2 and, on the other hand, make it possible to make the unit monobloc and, consequently, d '' increase the rigidity of the latter.
  • the arm 3 is removable and one can use other arms such as that shown in Figure 5 which is intended to provide an upward support for blocking a workpiece.
  • the free end of this arm 30 has a curved portion 34 whose concavity is directed upwards so that the support pad (not shown in Figure 5) is directed to the top.
  • the clamping members of known type are generally fixed to the work table of a machine tool by means of a screw 31 which engages in a notch 32 of the housing 1 and which is screwed into a slider sliding in a groove of the work table.
  • a single screw 31 is used, placed at the front of the member, that is to say on the side of the arm 3.
  • a second fixing screw 33 is provided which is disposed at the rear of the clamping member, that is to say on the side opposite to the arm 3. This second screw also engages in a slide block in a groove of the work table and it is used to hold the clamping member on the table in the case where an arm such as that of FIG. 5 working in upward support is used.
  • the support pad 12 comprises a contact surface 41 whose length is substantially equal to twice the width; this contact surface has at its center a clear area 42 which allows the periphery of the contact surface 41 to be seated as well as possible.

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

Description

La présente invention concerne les organes d'un élément de bridage généralement utilisés pour maintenir sur la table de travail d'une machine outil les pièces qui doivent y être usinées.The present invention relates to the members of a clamping element generally used to hold on the work table of a machine tool the parts which must be machined there.

Ces éléments de bridage sont généralement constitués d'un boîtier qui est fixé sur une table de travail au moyen d'un organe d'assemblage coopérant avec un tasseau coulissant dans une rainure de la table de travail et dans lequel est disposée une pièce mobile en rotation autour d'un axe horizontal et munie d'un secteur denté coopérant avec une vis sans fin de commande, ladite pièce mobile comportant un bras formant levier dont l'extrémité vient en appui sur la pièce à usiner.These clamping elements generally consist of a housing which is fixed to a work table by means of an assembly member cooperating with a cleat sliding in a groove of the work table and in which a movable part is arranged. rotation about a horizontal axis and provided with a toothed sector cooperating with an endless control screw, said moving part comprising a lever arm whose end comes to bear on the workpiece.

Dans les éléments de bridage connus (voir par exemple la demande de brevet européen EP-A-0 115 724), le bras précité est solidaire de la pièce mobile, ce qui exclut toute possibilité de réglage de sa position par rapport au boîtier.In known clamping elements (see for example European patent application EP-A-0 115 724), the aforementioned arm is secured to the movable part, which excludes any possibility of adjusting its position relative to the housing.

Par ailleurs, dans certaines utilisations, il peut s'avérer utile de réaliser un blocage ou un maintien vers le haut c'est-à-dire par ascension du bras formant levier.Furthermore, in certain uses, it may prove useful to block or hold it up, that is to say by raising the lever arm.

La présente invention à pour objet un élément de bridage du type décrit ci-dessus dans lequel on peut régler la position du bras par rapport au boîtier permettant de réaliser des blocages en agissant vers le haut ou vers le bas sur la pièce à bloquer.The present invention relates to a clamping element of the type described above in which one can adjust the position of the arm relative to the housing for performing blockages by acting up or down on the part to be blocked.

L'invention est notamment remarquable en ce que le bras formant levier est monté de manière amovible dans la pièce mobile permettant son déplacement en translation selon une direction sensiblement perpendiculaire à l'axe de rotation de la pièce mobile.The invention is particularly remarkable in that the lever arm is removably mounted in the moving part allowing it to move in translation in a direction substantially perpendicular to the axis of rotation of the moving part.

Cette disposition permet de régler la position relative du bras par rapport au boîtier afin de l'adapter aux différents cas d'utilisation.This arrangement makes it possible to adjust the relative position of the arm relative to the housing in order to adapt it to the different use cases.

Selon une autre caractéristique de l'invention, l'élément de bridage comporte un bras conformé de manière à pouvoir agir par soulèvement en venant s'appuyer sous une pièce à maintenir.According to another characteristic of the invention, the clamping element comprises an arm shaped so as to be able to act by lifting by coming to bear under a part to be held.

Le bras étant amovible, on peut ainsi disposer plusieurs bras pour un seul élément de bridage et on peut donc prévoir en particulier un bras agissant par soulèvement et non par action vers le bas.The arm being removable, it is thus possible to have several arms for a single clamping element and it is therefore possible in particular to provide an arm acting by lifting and not by action downwards.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui suit d'un exemple de réalisation de l'invention en se reportant aux dessins ci-annexés sur lesquels :

  • la figure 1 est une vue en perspective d'un élément de bridage selon l'invention ;
  • la figure 2 est une vue en coupe longitudinale de l'élément de bridage de la figure 1 ;
  • la figure 3 est une vue de dessus ;
  • la figure 4 est une vue de gauche avec coupe partielle selon un plan passant par le centre de la pièce mobile ;
  • la figure 5 est une vue de profil d'un bras de soulèvement ;
  • les figures 6A, 6B et 6C représentent un flasque respectivement en vue de droite, en coupe transversale et en vue de gauche.
  • les figures 7A à 7D représentent un patin d'appui respectivement en vue de dessous, et en vue de dessus, en coupe longitudinale et en coupe transversale.
Other characteristics and advantages of the invention will emerge from the description which follows of an exemplary embodiment of the invention with reference to the attached drawings in which:
  • Figure 1 is a perspective view of a clamping element according to the invention;
  • Figure 2 is a longitudinal sectional view of the clamping member of Figure 1;
  • Figure 3 is a top view;
  • Figure 4 is a left view with partial section along a plane passing through the center of the movable part;
  • Figure 5 is a side view of a lifting arm;
  • Figures 6A, 6B and 6C show a flange respectively in right view, in cross section and in left view.
  • Figures 7A to 7D show a support pad respectively in bottom view, and in top view, in longitudinal section and in cross section.

L'élément d'organe de bridage représenté sur les figures 1 à 4 est constitué d'un boîtier 1 dans lequel est disposée une pièce 2 mobile en rotation autour d'un axe horizontal ; cette pièce rotative 2 comporte un secteur denté 21 qui coopère avec une vis sans fin de commande 4 disposée dans un logement aménagé à l'arrière du boîtier 1 et qui est fixée dans ce logement au moyen d'un écrou 5 et d'une rondelle 6. Cette vis de commande comporte une tête hexagonale 22 qui fait saillie du boîtier et qui permet sa rotation au moyen d'une clef.The clamping member element shown in Figures 1 to 4 consists of a housing 1 in which is disposed a part 2 movable in rotation about a horizontal axis; this rotating part 2 comprises a toothed sector 21 which cooperates with an endless control screw 4 disposed in a housing arranged at the rear of the housing 1 and which is fixed in this housing by means of a nut 5 and a washer 6. This screw control comprises a hexagonal head 22 which projects from the housing and which allows its rotation by means of a key.

De manière connue, la pièce mobile 2 comporte un bras 3 formant levier dont l'extrémité libre est munie d'un patin d'appui 12.In a known manner, the moving part 2 comprises an arm 3 forming a lever, the free end of which is provided with a support pad 12.

Conformément à la présente invention, le bras formant levier 3 est monté de manière amovible dans la pièce rotative 2 et peut coulisser dans cette dernière de manière à effectuer un mouvement de translation perpendiculairement à l'axe de rotation de la pièce rotative 2. Avantageusement, le bras 3 peut être bloqué dans la pièce rotative 2 en plusieurs positions relatives. Dans le mode de réalisation représenté, le bras 3 comporte dans sa face inférieure des évidements tel que celui représenté en 23 qui sont répartis sur toute sa longueur ; ces évidements coopèrent avec un dispositif de blocage 14 constitué par exemple par une bille montée sur un ressort.In accordance with the present invention, the lever arm 3 is removably mounted in the rotary part 2 and can slide in the latter so as to carry out a translational movement perpendicular to the axis of rotation of the rotary part 2. Advantageously, the arm 3 can be locked in the rotating part 2 in several relative positions. In the embodiment shown, the arm 3 has in its lower face recesses such as that shown in 23 which are distributed over its entire length; these recesses cooperate with a locking device 14 constituted for example by a ball mounted on a spring.

On peut le voir en particulier sur les figures 2 et 4, la pièce mobile 2 comporte un évidement central cylindrique 24 qui est coaxial avec l'axe de rotation de la pièce 2 et on dispose dans cet évidement central 24 deux flasques circulaires identiques 9 qui présentent en section transversale la forme d'un L et qui sont montés tête bêche de manière symétrique comme on peut le voir en particulier sur la figure 4 de manière à aménager entre eux un logement central pour le bras 3. Les deux flasques sont assemblés l'un sur l'autre au moyen de deux vis 25 qui traversent chacune l'un des flasques et s'engagent dans un trou taraudé de l'autre flasque.As can be seen in particular in FIGS. 2 and 4, the moving part 2 has a cylindrical central recess 24 which is coaxial with the axis of rotation of the part 2 and there are two identical circular flanges 9 in this central recess 24 which have in cross section the shape of an L and which are mounted head to tail symmetrically as can be seen in particular in Figure 4 so as to provide between them a central housing for the arm 3. The two flanges are assembled l 'one on the other by means of two screws 25 which each pass through one of the flanges and engage in a tapped hole in the other flange.

Comme on peut le voir sur les figure 6A, 6B, et 6C qui représentent un des flasques 9, ce dernier comporte un trou traversant lisse 26 perpendiculaire à l'une des branches du L et un trou taraudé 27 qui est aménagé axialement dans l'autre branche du L. Chaque flasque présente un épaulement 28 constituant une couronne qui vient en appui sur la face extérieure du boîtier 1. Comme on peut le voir sur les figures 6A à 6C, une rainure 29 est aménagées dans la couronne 28 ; cette rainure 29 coopère avec un ergot 17 aménagé dans la pièce 2 de manière à assurer un centrage de l'ensemble des deux flasques 9 lorsqu'ils sont assemblés.As can be seen in FIGS. 6A, 6B, and 6C which represent one of the flanges 9, the latter has a smooth through hole 26 perpendicular to one of the branches of the L and a tapped hole 27 which is arranged axially in the another branch of L. Each flange has a shoulder 28 constituting a crown which comes to bear on the outside face of the housing 1. As can be seen in FIGS. 6A to 6C, a groove 29 is arranged in the crown 28; this groove 29 cooperates with a lug 17 arranged in the part 2 so as to ensure centering of the assembly of the two flanges 9 when they are assembled.

Les deux flasques, du fait de leur conception, favorisent, d'une part, une augmentation des surfaces de contact pour la rotation de la pièce mobile 2 et, d'autre part, permettent de rendre le boîtier monobloc et, par suite, d'augmenter la rigidité de ce dernier.The two flanges, due to their design, favor, on the one hand, an increase in the contact surfaces for the rotation of the moving part 2 and, on the other hand, make it possible to make the unit monobloc and, consequently, d '' increase the rigidity of the latter.

Conformément à l'invention, le bras 3 est amovible et on peut utiliser d'autres bras tel que celui représenté sur la figure 5 qui est destiné à réalisé un appui vers le haut pour le blocage d'une pièce à usiner. Comme on peut le voir sur la figure 5, l'extrémité libre de ce bras 30 comporte une partie courbe 34 dont la concavité est dirigée vers le haut de manière que le patin d'appui (non représenté sur la figure 5) se trouve dirigé vers le haut.According to the invention, the arm 3 is removable and one can use other arms such as that shown in Figure 5 which is intended to provide an upward support for blocking a workpiece. As can be seen in Figure 5, the free end of this arm 30 has a curved portion 34 whose concavity is directed upwards so that the support pad (not shown in Figure 5) is directed to the top.

Les organes de bridage de type connu sont généralement fixés sur la table de travail d'une machine outil au moyen d'une vis 31 qui s'engage dans une encoche 32 du boîtier 1 et qui est vissée dans un tasseau coulissant dans une rainure de la table de travail. Dans les organes de bridage classiques, on utilise une seule vis 31 disposée à l'avant de l'organe c'est-à-dire du côté du bras 3. Conformément à l'invention, on prévoit une deuxième vis de fixation 33 disposée à l'arrière de l'organe de bridage, c'est-à-dire du côté opposé au bras 3. Cette deuxième vis s'engage également dans un tasseau coulissant dans une rainure de la table de travail et elle sert à maintenir l'organe de bridage sur la table dans le cas où on utilise un bras tel que celui de la figure 5 travaillant en appui vers le haut.The clamping members of known type are generally fixed to the work table of a machine tool by means of a screw 31 which engages in a notch 32 of the housing 1 and which is screwed into a slider sliding in a groove of the work table. In conventional clamping members, a single screw 31 is used, placed at the front of the member, that is to say on the side of the arm 3. According to the invention, a second fixing screw 33 is provided which is disposed at the rear of the clamping member, that is to say on the side opposite to the arm 3. This second screw also engages in a slide block in a groove of the work table and it is used to hold the clamping member on the table in the case where an arm such as that of FIG. 5 working in upward support is used.

Comme on peut le voir sur les figures 7A à 7D, le patin d'appui 12 comprend une surface de contact 41 dont la longueur est sensiblement égale à deux fois la largeur ; cette surface de contact comporte en son centre une zone dégagée 42 qui permet d'asseoir au mieux la périphérie de la surface de contact 41.As can be seen in FIGS. 7A to 7D, the support pad 12 comprises a contact surface 41 whose length is substantially equal to twice the width; this contact surface has at its center a clear area 42 which allows the periphery of the contact surface 41 to be seated as well as possible.

La description ci-dessus n'a été fournie qu'à titre d'exemple illustratif et nullement limitatif et il est évident que l'on peut apporter des modifications ou variantes sans pour autant sortir du cadre de la présente invention.The above description has been provided by way of illustrative and in no way limitative example and it is obvious that modifications or variants can be made without departing from the scope of the present invention.

Claims (9)

  1. An element for clamping or locking workpieces comprising a housing (1) which is fastened to a worktable and in which a part is arranged which is movable in rotation about a horizontal axis and is provided with a toothed sector (21) co-operating with an endless operating screw (4), the said movable part (2) comprising an arm (3) forming a lever, the end of which comes to bear against the workpiece, characterised in that the said arm (3) is mounted in a detachable manner in the said movable part (2) with the possibility of translation in a direction substantially perpendicular to the axis of rotation of the said movable part (2).
  2. A clamping element according to Claim 1, characterised in that it comprises an arm (30) shaped so as to be able to act by rising and coming to bear under a workpiece that is to be held in position.
  3. A clamping element according to one of the claims 1 or 2, characterised in that the arms (3, 30) comprise several recesses (23) co-operating with a locking device (14) fastened in the said movable part (2).
  4. A clamping element according to Claim 2, characterised in that is comprises two members (31, 33) for fastening to the worktable, these two members being arranged on either side of the axis of rotation of the movable part.
  5. A clamping element according to any one of claims 1 to 4, characterised in that the said movable part (2) comprises an axial cylindrical central recess (24) in which there are arranged two identical circular cheek members (9) which are "L"-shaped and arranged "head to tail" so as to form a central seating for the arm (3, 30).
  6. A clamping element according to Claim 5, characterised in that the two cheek members (9) are fastened respectively one to the other by means of a screw (25) traversing one of the cheek members and engaging in a tapped hole (27) of the other cheek member.
  7. A clamping element according to Claim 6, characterised in that the said movable part comprises a centring device (17) for at least one of the said cheek members (9).
  8. A clamping element according to Claim 2, characterised in that the free end of the said lifting arm (30) has a curved shape (34), the concavity of which is directed upwards.
  9. A clamping element according to any one of Claims 1 to 8, characterised in that the clamping shoe (12) comprises a contact surface (41) the length of which is substantially equal to twice the width, this contact surface (41) comprising a cut-away zone (42) at its centre.
EP90402498A 1989-09-11 1990-09-11 Pressure element for clamping workpieces Expired - Lifetime EP0418145B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911853 1989-09-11
FR8911853A FR2651706B1 (en) 1989-09-11 1989-09-11 PRESSURE ELEMENT FOR CLAMPING WORKPIECES.

Publications (2)

Publication Number Publication Date
EP0418145A1 EP0418145A1 (en) 1991-03-20
EP0418145B1 true EP0418145B1 (en) 1993-09-22

Family

ID=9385320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402498A Expired - Lifetime EP0418145B1 (en) 1989-09-11 1990-09-11 Pressure element for clamping workpieces

Country Status (5)

Country Link
US (1) US5080336A (en)
EP (1) EP0418145B1 (en)
JP (1) JPH0398729A (en)
DE (1) DE69003497T2 (en)
FR (1) FR2651706B1 (en)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
DE9111510U1 (en) * 1991-09-16 1991-12-05 Barabas, Ewald, Dipl.-Ing., 1000 Berlin Continuously adjustable clamping tool
US5575462A (en) * 1994-08-17 1996-11-19 Blatt; John A. Rotary clamp for a linear actuator
US5634629A (en) * 1994-12-22 1997-06-03 Isi Norgren Inc. Rotary clamp having a common plane mounting arrangement
US5924685A (en) * 1997-06-16 1999-07-20 Webb; Robert M. Adjustable clamp
US9221678B2 (en) * 2008-10-06 2015-12-29 University Of Florida Research Foundation, Inc. Active fixturing for micro/mesoscale, machine tool systems
JP5854220B2 (en) * 2012-01-27 2016-02-09 Smc株式会社 Electric clamp device
CN109290600B (en) * 2018-10-08 2019-10-08 赵文龙 Efficient hardware sheet punching equipment
US11326370B2 (en) * 2019-05-30 2022-05-10 Lockheed Martin Corporation Apparatuses, systems, and methods for latching objects
DE102019129678A1 (en) * 2019-11-04 2021-05-06 Andreas Maier Gmbh & Co. Kg Clamping device for clamping a workpiece
CN112658322A (en) * 2020-12-11 2021-04-16 国网山东省电力公司曹县供电公司 Drilling equipment for electric power engineering
CN113182903A (en) * 2021-05-14 2021-07-30 昌河飞机工业（集团）有限责任公司 Internal centering pressing device

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Publication number Priority date Publication date Assignee Title
DE245948C (en) *
US1580083A (en) * 1925-09-12 1926-04-06 Boadle Sidney Charles Cramp
DE750101C (en) * 1938-05-28 1944-12-14 Clamping device for machine tools
US2395242A (en) * 1943-10-02 1946-02-19 Oscar W Anderson Work clamp
US3575405A (en) * 1968-08-28 1971-04-20 Emmit B Harding Parallel bar clamping device
FR2496530A1 (en) * 1980-12-24 1982-06-25 Carossino Andre DEVICE FOR CLAMPING WORKPIECES ON THE TABLE OF A MACHINE TOOL
FR2538732A1 (en) * 1983-01-05 1984-07-06 Carossino Freres CLAMPING DEVICE, IN PARTICULAR FOR ATTACHING PARTS TO A MACHINE TOOL
FR2540768B3 (en) * 1983-02-14 1985-11-15 Carossino Freres DEVICE FOR CLAMPING WORKPIECES, PARTICULARLY ON A MACHINE TOOL TABLE
DE3513806A1 (en) * 1985-04-17 1986-10-23 Bodo 2057 Reinbek Schulz Workpiece holding-down device with clamping lever
US4887803A (en) * 1989-01-09 1989-12-19 Witt Larry M Power actuated cam clamp

Also Published As

Publication number Publication date
DE69003497D1 (en) 1993-10-28
US5080336A (en) 1992-01-14
JPH0398729A (en) 1991-04-24
DE69003497T2 (en) 1994-02-17
EP0418145A1 (en) 1991-03-20
FR2651706A1 (en) 1991-03-15
FR2651706B1 (en) 1991-11-29

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