EP0362753B1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
EP0362753B1
EP0362753B1 EP89118202A EP89118202A EP0362753B1 EP 0362753 B1 EP0362753 B1 EP 0362753B1 EP 89118202 A EP89118202 A EP 89118202A EP 89118202 A EP89118202 A EP 89118202A EP 0362753 B1 EP0362753 B1 EP 0362753B1
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EP
European Patent Office
Prior art keywords
clamping
clamping device
jaw
down element
workpiece
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
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EP89118202A
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German (de)
English (en)
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EP0362753A1 (fr
Inventor
Manfred Schanz
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Individual
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Individual
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    • 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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2473—Construction of the jaws with pull-down action on the workpiece

Definitions

  • the invention relates to a clamping device according to the preamble of the main claim.
  • DE-B-1 301 765 shows a clamping device with a pull-down device, which clamps a workpiece during the adjustment movement when clamping a workpiece and thereby also moves towards the support.
  • this clamping device the workpiece is held by elastic clamping rails which protrude beyond the respective clamping jaw.
  • the obliquely downward-pointing clamping rails when acted upon by the workpiece to be clamped, bring about a downward clamping force in addition to the normal clamping force, so that the workpiece is also pressed against the bearing surface.
  • the disadvantage here is that the workpiece is held in the clamping end position by the elastic clamping rails. This can lead to problems with regard to the lateral positioning of the workpiece, since the elastic flexibility of the clamping rails does not permit exact lateral positioning of the workpiece with high repeatability.
  • the entire clamping forces holding the workpiece must be transmitted through the clamping rails alone.
  • the workpiece is loaded linearly at the contact points of the clamping rails, and high holding forces can damage the workpiece.
  • the clamping rails must also be designed to be correspondingly stable, but this in turn impairs their elastic deformability for the pull-down process.
  • the object of the present invention is to provide a clamping device of the type mentioned at the outset which assures an exact positional positioning of a workpiece, in particular also on the workpiece support (Z-axis) good repeatability enables, where cumbersome re-measurement work should be omitted.
  • the pull-down element can dodge during the adjustment movement and then arrives in the end position of the workpiece in an end position lying within the clamping jaw, so that the workpiece then lies against the clamping surface and is held by the clamping jaws.
  • a preferred embodiment provides that the pull-down element is inserted into a receiving slot which runs obliquely to the workpiece support and extends longitudinally at least over a portion of the clamping jaw and is open towards the clamping surface and which faces away from the clamping surface as a bearing and holder for the pull-down element is formed and has an extension for the pivoting movement of the pull-down element in the vicinity of the clamping surface.
  • the pull-down element can be inserted into such a receiving slot in a simple manner and, due to this accommodation, is not disruptive even in the usual handling of the clamping device.
  • the pull-down element is preferably formed by at least one leaf spring, which is preferably a flat flat part is trained. Such a pull-down element is particularly easy to manufacture.
  • the receiving slot for the pull-down element in the clamping jaw has a curve arched to the clamping surface, at least of its slot wall remote from the support.
  • This curvature of the receiving slot makes a flat one in a relaxed position or flat leaf spring deformed and preloaded, so that it rests accordingly at least in the vicinity of the clamping surface on this bulge outside.
  • the leaf spring thus assumes its initial position automatically when not under load and is at the same time jammed in the slot by the deformation and thus held.
  • pull-down devices are provided on both clamping jaws, possibly also on partial jaws belonging to a clamping jaw.
  • the workpiece is pressurized towards the support on both clamping surfaces and thus precisely positioned.
  • a further development of the invention provides that the intended clamping movement of the clamping jaws is somewhat larger than the adjusting movement of the pull-down element and that, in the case of the adjustable clamping jaws, an infeed device for displacing the clamping jaw (s) on the workpiece and preferably combined with the infeed device Clamping device provided for the clamping movement.
  • the adjustable clamping jaw (s) can be fed up to the workpiece and only then is the pull-down device activated for positioning on the workpiece support during clamping.
  • the base plate expediently has coordinate bores for fastening fixed clamping jaws or similar stops and / or for connecting to a base clamping plate or a machine tool table.
  • the clamping device can thus be used overall in the manner of a pallet plate or an interchangeable plate, the existing coordinate bores being used for exact positioning when moving this base plate or pallet plate. Overall, this also makes it possible to achieve the clamping device when clamping the workpiece Maintain positioning accuracy.
  • a clamping device 1 shown in the figures is used to hold workpieces 2. These are held between two clamping jaws 3 which are adjustable in their relative distance from one another. It is preferably provided that one of the clamping jaws is designed as a fixed jaw and the other as a movable jaw.
  • the clamping jaws 3 have clamping surfaces 4 pointing towards one another and in the exemplary embodiment, workpiece supports 5 connected in one piece are also provided.
  • a pull-down device 6 is provided at least on one of the clamping surfaces. This pull-down device 6 is actuated by this workpiece when the workpiece is clamped between the two clamping jaws 3, it being pulled against the workpiece support 5 by a pull-down component derived from the clamping movement.
  • the pull-down device 6 has a pull-down element 7 which projects beyond the clamping surface 4.
  • this pull-down element 7 is formed by a leaf spring 9, which is resilient in the pull-down direction (see arrow Pf 1 in FIG. 1) and with its end on the rake face side points obliquely towards the workpiece support 5. Without a workpiece 2 lying thereon (FIG. 1), the end 12 on the rake face protrudes beyond the rake face 4, whereby this projection can be a few tenths of a millimeter, for example 2/10 millimeters.
  • the leaf spring 9 is in the embodiment in an inclined to the workpiece support 5 and out longitudinally at least over a portion of the clamping jaw 3 extending receiving slot 10 is used, which has an outlet opening in the clamping surface 4. It is preferably provided that this receiving slot 10 has a curve curved to the clamping surface 4, as can be clearly seen in FIGS. 1 to 4. Starting from the inner end of the receiving slot 10, its slot walls 13, 13a run parallel and form a clamping bracket for the leaf spring 9 in this area, which extends over approximately half the depth of the receiving slot 10.
  • the lower or the support-side diaphragm wall 13a has a greater distance from the other diaphragm wall 13 in the region located further outside, this distance being dimensioned such that a free space 8 for pivoting the outer end of the leaf spring 9 into that shown in FIG. 4 Position is present.
  • the leaf spring 9 is preferably designed as a flat flat part in a relaxed position, which is preloaded accordingly after insertion into the curved receiving slot 10. In this pretension position, the leaf spring 9 rests on the diaphragm wall 13 and the outer end 12 protrudes beyond the clamping surface 4.
  • the slot base 24 forms a displacement stop, so that the leaf spring 9 cannot be moved longitudinally when it is acted upon by the workpiece 2 according to the arrow Pf 2 in FIG. 3. Therefore, due to the oblique arrangement of the spring end, there is a pivoting movement toward the workpiece support 5, the pivot radius intersecting the support-side clamping surface section below the pull-down element 7 which is in the rest position.
  • the workpiece 2 Since the protruding end 12 of the pull-down element 7 initially forms the contact point for the workpiece 2, the workpiece 2 also necessarily performs the pull-down movement and is guided against the workpiece support 5.
  • In 3 shows the workpiece 2 at a slight distance from the support 5 for clarification.
  • the workpiece When pressing the workpiece 2 in the direction of the clamping surface 4 (arrow Pf 2), the workpiece is lowered to its exact support on its workpiece support 5. If the workpiece 2 is already resting on the support 5 during the clamping process, frictional force is applied towards the support, so that it is safely prevented from being lifted off the support 5, thus ensuring that the workpiece 2 is safely positioned in the Z direction to edition 5.
  • the leaf spring 9 is biased by the curved course of the slot 10, so that its outer end 12 assumes the position shown in FIG. 3 without external stress. At the same time, the leaf spring 9 is also clamped in the slot 10 and is therefore also held in a simple manner.
  • This holder has the further advantage that leaf springs 9 of different thicknesses can be used and are held sufficiently. In Fig. 3, a thinner spring is shown in dashed lines. This makes it possible for different leaf springs or the like. Pull-down elements to be used depending on the desired pull-down force.
  • the lamellar leaf spring 9 can have a thickness of approximately 0.1 mm to approximately 1 mm in the case of smaller clamping devices, a leaf spring with a thickness of 0.2 mm being used in an experimental setup.
  • the thickness of the leaf spring or the like can also be several, for example 2, 3, 4 or 5 mm.
  • the spring force can also be influenced by the free projection of the spring protruding over the clamping length.
  • the stroke in the pull-down direction also results.
  • a pull-down stroke of approximately 2/10 to 3/10 millimeters would result from a protrusion of approximately 2/10 millimeters.
  • the pull-down stroke of the supernatant could be increased accordingly.
  • the leaf spring 9 can extend over the entire length of a clamping jaw 3, one of its longitudinal edges projecting beyond the clamping surface 4 as the outer end 12. It is expedient if the receiving slot 10 is formed open at the edges at its lateral ends, so that the leaf spring 9 can then also be used from these sides. On the other hand, this leaf spring can also be inserted into the slot 10 from the clamping surface 4. There is also the possibility that several pull-down elements 7 are arranged in series in the longitudinal direction of the clamping jaw 3.
  • the pull-down device 6 can be arranged both on the fixed and on the movable clamping jaw. It is preferably provided that such pull-down devices 6 are provided on both jaws.
  • FIG. 6 shows a clamping device in which a fixed, longitudinally continuous clamping jaw 3 and on the opposite side a movable clamping jaw formed from a plurality of partial clamping jaws 3a, 3b are provided. It can also be seen here that these partial clamping jaws can be designed differently not only in their longitudinal extent, but also in their clamping distance in order to be able to clamp workpieces provided with recesses accordingly.
  • the partial clamping jaws 3a, 3b can each be provided with pull-down devices 6.
  • clamping devices 1 are shown, in which the actual clamping movement of the clamping jaws 3 is matched to the adjusting movement of the pull-down element or elements 7.
  • the clamping movement of the clamping jaws is somewhat larger than the adjusting movement of the pull-down element.
  • the clamping devices 1 have a combined feed and clamping device 14 for the movable clamping jaws 3.
  • the movable jaws 3 can be moved up to the workpiece, this workpiece then resting on the pull-down elements 7 of the jaws 3.
  • the subsequent clamping process then causes only a very small adjustment path of the clamping jaws, within which the pull-down movement of the leaf springs 9 or the like also takes place.
  • the feed and clamping device 14 has clamping screws 15 (see FIGS. 5 and 7) which engage on the movable clamping jaw (s) and which pass through the movable clamping jaws and pass through slits 16 extending obliquely in the clamping direction in a base plate 17 belonging to the clamping device 1 and on the back thereof Base plate 17 are screwed into longitudinally adjustable locking blocks 18.
  • Locking blocks 18 locking fields formed by a locking profile 21 are provided on the underside of the base plate 17 along the sliding slots 16.
  • the locking blocks 18 have a corresponding counter-profile on their side facing the base plate 17, which engages in the locking profile 21 on the base plate 17.
  • the clamping screws 15 can be loosened to such an extent that the locking profiling disengages, so that the locking blocks can then be adjusted along the sliding slots 16. If the actual clamping position is reached with this rough adjustment, for example with the clamping jaws resting on the workpiece, the clamping screws 15 are tightened, the locking blocks 18 are fixed by engagement with the locking profile 21 and the clamping displacement of the movable clamping jaws 3 is then carried out by further tightening of the clamping screws.
  • This displacement path is comparatively small and, depending on the division of the latching profile 21, can be dimensioned according to this division distance or less. For example, clamping paths of 0.5 to 2 mm can be provided.
  • the oblique through bores for the clamping screws 15 located in the movable clamping jaws are dimensioned in such a way that that the clamping screws have a certain amount of play in the tilting movement, since they are slightly inclined when the jaws are clamped.
  • spherical washers are placed under the head. Because of this slight inclination, the locking profile 21 and the corresponding counter-profile of the locking blocks 18 are expediently formed with rounded flanks in order to keep transverse forces otherwise transmitted to the tensioning screws away during the tilting movement.
  • a workpiece 2 is clamped in FIG. 5 and, for clarification, the movable clamping jaw is also indicated in another displacement position. It can also be clearly seen in this figure that the workpiece 2 rests on supports 5 which are integrally connected to the clamping jaws 3. These conditions are formed here by corresponding projections below the clamping surfaces 4.
  • a depression 19 is provided in the area of the locking profiles 21, the depth of which is dimensioned to accommodate the locking blocks 18.
  • 17 fitting bores 22 are provided in this fixed jaw and in the base plate, into which pins or preferably expansion mandrels can be inserted. Through this, an exact position of the fixed jaw is first achieved. This position is then secured by retaining screws 26.
  • the base plate 17 (FIG. 6) has fastening points for two positions of the fixed clamping jaw 3. If necessary, attachment points can also be provided for more different positions of the clamping jaw 3.
  • FIG. 7 and 8 show a somewhat modified holder for the fixed clamping jaw 3, wherein here instead of fitting bores 22 in the base plate 17 grooves 27 for different positions of the fixed clamping jaw 3 and on this corresponding longitudinal springs 28 for engaging in the groove 27 are provided.
  • the clamping jaw 3 is fastened with retaining screws 26.
  • a longitudinal stop is also indicated in FIGS. 5 and 6, which on the foot side has a guide projection which engages under the support projection of the clamping jaw 3 and is therefore already well held in its respective position.
  • the clamping jaw 3 has below its clamping surface 4 a series of threaded bores into which the fastening screws 30 of the longitudinal stop 29 can be screwed.
  • the longitudinal stop can thus be attached at virtually any position along the fixed jaw 3. It also has an adjusting screw 31 for fine adjustment of the longitudinal stop position.
  • Fig. 7 shows a modified embodiment of a pull-down device 6a, in which the pull-down element 7a is formed by a part of the clamping jaw 3, which protrudes slightly above the clamping surface 4 and by an oblique longitudinal slot, which is open at the edge towards the clamping surface 4, in regions thereof remaining jaw body is separated.
  • the pull-down device 6 or 6a according to the invention can also be implemented in various other embodiments, wherein the pull-down element can also be attached to a swivel joint, which on the other hand is connected to the jaw body.
  • a machine tool table or other base e.g. also a base plate 25 (see FIG. 7) of a pallet system
  • 17 coordinate bores 20 are provided in the base plate. Via these coordinate bores, which correspond to corresponding bores in a base plate 25 or a machine table, an exact positioning and holding via expansion mandrels is possible.
  • the clamping device can thus be quickly and precisely connected to a corresponding base.
  • stepped pins it is also possible to fix the position of the clamping device 1 in the T-slots of a processing machine.
  • the clamping device 1 can generally be used to hold workpieces during machining. Because of the high positioning accuracy and also repeatability, use in the production of mold plates, mold cores and the like, ejector plates, eroding electrodes, etc. is particularly possible.
  • the pull-down device 6 can also be mounted in a separate jaw part, which can also be retrofitted to the existing clamping jaws.
  • FIG. 5 also shows a pressure piece 32 which presses the tensioning screw 15 laterally approximately in the feed direction of the movable clamping jaw, through which the tensioning screw rests on one side in the loosened position against the through hole.
  • the maximum span can thus be comparatively small and the tilting movement can thus be kept within limits. If the movable clamping jaw is moved up to the workpiece to be clamped, the pull-down path of the pull-down device or devices 6 and then also the actual clamping path must be bridged from this position. For this, the comparatively small span of the tensioning device 14 must be sufficient.
  • the tensioning screw and also the locking block 18 connected therewith take up the position lying furthest forward in the tensioning direction before the tensioning process, so that the full tensioning path is subsequently available.
  • the pressure piece has an external thread with which it can be screwed into a threaded bore 33 in the movable clamping jaw 3. At its end facing the clamping screw 15, a spring-loaded pressure pin 34 protrudes from the pressure piece 32.

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Claims (23)

  1. Dispositif de fixation (1) pour la retenue de pièces (2) à usiner, comprenant des mors de serrage (3) qui sont réglables mutuellement à distance l'un de l'autre et présentent des surfaces de serrage (4) tournées l'une vers l'autre, ainsi qu'un appui (5) des pièces à usiner, dispositif dans lequel est prévu, sur au moins l'une des surfaces de serrage (4), un système serre-flan (6) pouvant être réglé par la pièce (2) à abloquer, pouvant être sollicité dans la direction du serrage, et muni d'un élément serre-flan (7) dépassant au-delà de la surface de serrage (4) et pouvant être simultanément déplacé, par ce mouvement de réglage, en direction de l'appui (5), l'élément serre-flan (7) étant constitué d'une pièce sensiblement en forme de barrette, orientée à l'oblique en direction de l'appui (5) des pièces à usiner, et sensiblement douée de souplesse élastique dans la direction du blocage, et cette pièce, respectivement une fente réceptrice (10) prévue pour cette dernière et recevant l'élément serre-flan (7) dans le mors de serrage (3), présentant, sur la surface de serrage (4), une direction de sortie orientée à l'oblique par rapport à l'appui des pièces à usiner, caractérisé par le fait qu'il est prévu dans la direction du pivotement descendant de l'élément serre-flan (7), au voisinage de ce dernier, une dépouille (8) au moins conçue pour recevoir la partie dudit élément serre-flan (7) qui fait saillie, en position soulagée, au-delà de la surface de serrage (4) du mors de serrage ; et par le fait que la largeur de la fente est plus grande dans la région de la surface de serrage (4) que dans la zone postérieure de portée, en vue de former la dépouille (8) autorisant le mouvement de l'extrémité de l'élément serre-flan (7) qui est située côté surface de serrage.
  2. Dispositif de fixation selon la revendication 1, caractérisé par le fait que le mouvement de réglage est un mouvement de pivotement s'opérant avec un rayon extérieur de pivotement qui coupe, au-dessous du système serre-flan (6), la surface de serrage située côté appui.
  3. Dispositif de fixation selon la revendication 1 ou 2, caractérisé par le fait que l'élément serre-flan (7) est enchâssé dans une fente réceptrice (10) qui s'étend à l'oblique en direction de l'appui (5) des pièces à usiner, couvre au moins une région partielle du ou des mors de serrage (3), est ouverte en direction de la surface de serrage (4), est réalisée en tant que portée et arrêt de l'élément serre-flan (7), en étant tournée à l'opposé de la surface de serrage (4), et comporte un évasement (8) à proximité de la surface de serrage (4), pour permettre le mouvement de pivotement de l'élément serre-flan (7).
  4. Dispositif de fixation selon l'une des revendications 1 à 3, caractérisé par le fait que l'élément serreflan (7) est formé par au moins une lame de ressort réalisée, de préférence, en tant que pièce plane aplatie.
  5. Dispositif de fixation selon l'une des revendications 1 à 4, caractérisé par le fait que la lame de ressort (9), du type lamelle, est conçue pour s'étendre sensiblement sur la longueur du mors de serrage (3) ; et par le fait que, de préférence, l'une (12) de ses arêtes longitudinales fait saillie au-delà de la surface de serrage (4).
  6. Dispositif de fixation selon l'une des revendications 1 à 5, caractérisé par le fait que la fente réceptrice (10) destinée à l'élément serre-flan (7) présente, dans le mors de serrage (3), sur au moins sa paroi (13) éloignée de l'appui, une allure bombée par rapport à la surface de serrage (4).
  7. Dispositif de fixation selon l'une des revendications 1 à 6, caractérisé par le fait que la lame de ressort (9) du type lamelle présente une épaisseur d'environ 0,1 mm à environ 5 mm, par exemple, de préférence comprise entre 0,1 mm et 0,5 mm, notamment de 0,2 mm ou 0,3 mm ; et par le fait que la largeur de la fente est dimensionnée pour correspondre au moins à la lame de ressort la plus épaisse.
  8. Dispositif de fixation selon l'une des revendications 1 à 7, caractérisé par le fait que le dépassement de l'élément serre-flan (7), au-delà de la surface de serrage (4), mesure quelques dixièmes de millimètre seulement en position non sollicitée.
  9. Dispositif de fixation selon l'une des revendications 1 à 8, caractérisé par le fait que le pivotement descendant en direction de l'appui (5), s'opérant lors d'une sollicitation de l'élément serre-flan (7) par une pièce à usiner, mesure quelques dixièmes de millimètre seulement.
  10. Dispositif de fixation selon l'une des revendications 1 à 9, caractérisé par le fait que des systèmes serre-flan (6) sont prévus sur les deux mors de serrage (3), éventuellement aussi sur des mâchoires partiel les faisant partie d'un mors de serrage.
  11. Dispositif de fixation selon l'une des revendications 1 à 10, caractérisé par le fait que les appuis (5) des pièces à usiner sont prévus, de préférence, d'un seul tenant sur les mors de serrage (3).
  12. Dispositif de fixation selon l'une des revendications 1 à 11, caractérisé par le fait que plusieurs systèmes serre-flan (6) sont agencés en série dans le sens longitudinal du mors de serrage (3).
  13. Dispositif de fixation selon l'une des revendications 1 à 12, caractérisé par le fait que la ou les fente(s) réceptrice(s) (10), respectivement destinée(s) à la ou aux lame(s) de ressort (9), est (sont) réalisée(s) à bord ouvert sur ses (leurs) extrémités latérales.
  14. Dispositif de fixation selon l'une des revendications précédentes, caractérisé par le fait que l'élément serre-flan (7) est formé par une pièce reliée, au corps du mors de serrage, de préférence d'un seul tenant et éventuellement par l'intermédiaire d'une articulation pivotante.
  15. Dispositif de fixation selon l'une des revendications 1 à 14, caractérisé par le fait que le mouvement de serrage prévu des mors de serrage (3) est sensiblement plus conséquent que le mouvement de réglage de l'élément serre-flan (7) ; et par le fait que sont prévus à cette fin, respectivement sur le ou les mors de serrage (3) réglable(s), un mécanisme d'avance pour faire coulisser le ou les mors de serrage jusqu'à la pièce (2) à usiner, ainsi qu'un mécanisme de serrage de préférence combiné au mécanisme d'avance, pour le mouvement de serrage.
  16. Dispositif de fixation selon la revendication 15, caractérisé par le fait que le mécanisme (14) d'avance et de serrage présente des vis de serrage (15) qui traversent obliquement le ou les mors de serrage (3) dans la direction du serrage, traversent des fentes de coulissement (16) orientées dans la direction du serrage et pratiquées dans une plaque de base (17), et sont postérieurement vissées dans des sabots encrantables (18) réglables longitudinalement.
  17. Dispositif de fixation selon la revendication 15 ou 16, caractérisé par le fait que des zones d'encrantage formées par un profilage d'encrantage (21) sont prévues le long des fentes de coulissement (16), à la face inférieure de la plaque de base (17), pour les sabots encrantables (18) munis d'un profilage complémentaire ; et par le fait que le profilage d'encrantage présente, de préférence, un pas d'environ 1,5 mm.
  18. Dispositif de fixation selon la revendication 17, caractérisé par le fait que les profilages d'encrantage (21) comportent des flancs arrondis.
  19. Dispositif de fixation selon l'une des revendications 15 à 18, caractérisé par le fait que les vis de serrage (15) présentent un jeu de basculement dans le mors de serrage (3).
  20. Dispositif de fixation selon l'une des revendications 15 à 19, caractérisé par te fait que ta plaque de base (17) comporte, dans la région des zones d'encrantage, un ou plusieurs encaissements (19) dont la profondeur correspond au moins à la hauteur des sabots encrantables (18).
  21. Dispositif de fixation selon l'une des revendications 1 à 20, caractérisé par le fait que ta plaque de base (17) présente des perçages d'ajustement (22) et/ou des perçages (20) ménagés en coordonnées en vue de l'assujettissement de vis de serrage fixes ou butées similaires, et/ou en vue de la liaison avec une semelle d'ablocage ou un plateau de machine-outil.
  22. Dispositif de fixation selon l'une ou plusieurs des revendications 1 à 21, caractérisé par le fait que le système serre-flan est disposé dans une partie de mâchoire distincte, pouvant être reliée à un mors de serrage.
  23. Dispositif de fixation selon l'une ou plusieurs des revendications 1 à 22, caractérisé par le fait que la ou les vis de serrage (15), traversant le mors mobile de serrage, est (sont) sollicitée(s) latéralement par une pression, sensiblement dans la direction d'avance du mors de serrage ; et par le fait qu'il est notamment prévu, à cette fin, au moins un organe de pression (32) amorti élastiquement, pouvant être vissé dans un trou taraudé (33) façonné transversalement par rapport au trou de passage de la vis de serrage.
EP89118202A 1988-10-04 1989-09-30 Dispositif de fixation Expired - Lifetime EP0362753B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833742 1988-10-04
DE3833742A DE3833742A1 (de) 1988-10-04 1988-10-04 Einspannvorrichtung

Publications (2)

Publication Number Publication Date
EP0362753A1 EP0362753A1 (fr) 1990-04-11
EP0362753B1 true EP0362753B1 (fr) 1993-06-09

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EP89118202A Expired - Lifetime EP0362753B1 (fr) 1988-10-04 1989-09-30 Dispositif de fixation

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EP (1) EP0362753B1 (fr)
DE (2) DE3833742A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015103531B3 (de) * 2015-03-11 2016-08-04 Helmholtz-Zentrum Berlin Für Materialien Und Energie Gmbh Niederhaltespanner

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5019129A (en) * 1990-07-18 1991-05-28 Lars Johanson Workpiece holding system
DE4329372A1 (de) * 1993-09-01 1995-03-02 Manfred Schanz Spanneinrichtung zum Halten von Werkstücken
DE10345629B4 (de) * 2003-09-29 2007-11-08 Wimmer Gmbh Vorrichtung zum Einspannen eines nicht-elastischen Bauteils
EP1762339B1 (fr) 2005-09-07 2011-04-06 System 3R International AB Mâchoire de serrage déformable pour un étau
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DE3833742A1 (de) 1990-04-05
EP0362753A1 (fr) 1990-04-11
DE58904620D1 (de) 1993-07-15

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