EP0252933B1 - Bride de serrage manuelle pour fixation aux tables de machines et a des dispositifs etc. - Google Patents

Bride de serrage manuelle pour fixation aux tables de machines et a des dispositifs etc. Download PDF

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Publication number
EP0252933B1
EP0252933B1 EP87900134A EP87900134A EP0252933B1 EP 0252933 B1 EP0252933 B1 EP 0252933B1 EP 87900134 A EP87900134 A EP 87900134A EP 87900134 A EP87900134 A EP 87900134A EP 0252933 B1 EP0252933 B1 EP 0252933B1
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EP
European Patent Office
Prior art keywords
clamping
opening
clamping device
manual
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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EP87900134A
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German (de)
English (en)
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EP0252933A1 (fr
Inventor
Matthias Fischer
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Individual
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Individual
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Publication date
Priority claimed from DE19863600010 external-priority patent/DE3600010A1/de
Priority claimed from DE19863640869 external-priority patent/DE3640869A1/de
Application filed by Individual filed Critical Individual
Priority to AT87900134T priority Critical patent/ATE54860T1/de
Publication of EP0252933A1 publication Critical patent/EP0252933A1/fr
Application granted granted Critical
Publication of EP0252933B1 publication Critical patent/EP0252933B1/fr
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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
    • B25B5/10—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 invention relates to a manual clamping device for fastening to machine tables, devices etc., the basic structure of which consists of a clamping element, a clamping actuating device and a bearing element.
  • a manual clamping device for fastening to machine tables, devices etc., the basic structure of which consists of a clamping element, a clamping actuating device and a bearing element.
  • Such manual clamping device is known from document US-A-2872854.
  • a "manual tensioning device” sets itself apart from hydraulic, pneumatic or electrically operated tensioning devices, which for cost reasons alone cannot be compared with manual tensioning devices.
  • Clamping devices also have the following serious disadvantage, particularly with a high structure: During the clamping process, the clamping point on the workpiece recedes, risk of workpiece displacement, tilting and scratching. This effect is due to the bending moment, which is calculated from the length of the overlapping lever arm, the height and the force of the tensioning device. Space and cost-intensive stiffeners or supports are required as a result.
  • the clamping element rotates during the clamping process around the upper contact point of its ring bead in the opening.
  • the workpiece is displaced relatively far during the clamping process, moreover the clamping force divided into two components decreases and remains small, due to the fact that there both lever arms are of approximately the same length.
  • the invention has the object of developing the known manual clamping device in accordance with the preamble of the main claim so that the clamping force is applied perpendicular to the bearing surface of the workpiece with optimum force conversion and unchanged arrangement of the clamping point between workpiece and clamping element.
  • the bearing / counter bearing point of the clamping element is formed by its point of contact with the opening, and only a short distance from its front end. Since the opening can come close to the workpiece to be clamped without impairing the opening or retraction of the clamping element, the bearing / counter bearing point of the clamping element is in the immediate vicinity of the workpiece during clamping. This creates a very short lever on the workpiece (load lever). A good power transmission by the power lever is thus the consequence even with an extremely short overall length, so that the tensioning actuating device mounted at the rear can be equipped with a small, handy tensioning handle.
  • Clamping force perpendicular to the contact surface and contact surface By arranging the instantaneous pivot point of the clamping element approximately on the specified line starting from the workpiece contact point, which runs parallel to the workpiece plane to be clamped, force transmission can be carried out vertically with close proximity to all settings of the clamping element reach the workpiece level to be clamped. This counteracts any movement of the workpiece on its support surface, regardless of the respective mounting of the clamping element. little need for space:
  • the tensioning element guides and bears in the opening of a bearing element. Double support or storage is not necessary.
  • the bearing element can be attached to the machine table, the device etc. in the immediate vicinity of the workpiece. The result is a small amount of excess.
  • the arrangement according to the invention enables the use of a small, handy clamping handle, with which clamping can be carried out quickly and safely.
  • the clamping element can be pulled back quickly and safely for workpiece removal using the clamping handle. Due to the small dimensions of the tensioning element, there are low inertial forces. This enables quick and easy retraction or advancement.
  • the movable arrangement of the clamping element in the opening enables retraction and thus the use when clamping in clamping pockets.
  • the flexible guidance of the tensioning element in the opening allows large, through the rear attached clamping actuation caused lifting movements of the clamping element without preventing retraction in the opening.
  • the movable arrangement of the tensioning element in the opening enables the tensioning element to move somewhat in the opening during the tensioning process, specifically with the friction conditions being matched exactly by the distance by which the bearing element bends back due to the bending moment.
  • the clamping point remains so precisely on the workpiece that there is no longer any risk of jamming, tipping or scratching.
  • the opening in the bearing element, in which the tensioning element is guided is obliquely or conically widened in the front region in which the tensioning element touches the opening (counter bearing point).
  • the clamping point remains perfectly precise on the workpiece, even though the bearing element withdraws.
  • the clamping element thus also moves somewhat in the longitudinal direction when clamping, not only when withdrawing for workpiece removal.
  • Round cross-sections of the opening and the clamping element are advantageous in terms of production technology, polygonal ones allow the edges of the clamping element to be easily guided in those of the opening.
  • a part suitable for workpiece clamping in particular a clamping lug, is provided on the part of the clamping element protruding from the opening, the upper side of which has a distance or clearance angle for imaginary extension of the inner surface of the opening and the underside behind the clamping point is provided with a distance or clearance angle to the workpiece is.
  • a larger clamping stroke and a retraction of the clamping element is achieved even with larger workpiece height tolerances.
  • Comparable advantages can also be achieved by a separate configuration of the rear clamping element part, in particular by means of suitable shapes.
  • a through opening that runs preferably obliquely upward in connection with a clamping screw can bring about an approximately vertical clamping movement against the workpiece, wherein turning the clamping screw towards the user is considered advantageous.
  • a spherical design of the material thickening also allows the clamping actuation device to be held in a stable manner without restricting the mobility of the clamping element in the opening.
  • the inner surface of the opening equipped with a suitable profile, a part fastened to the bearing element, or also a bolt fastened to the machine table, the device, etc. can serve as a bearing point for the force support.
  • a loose longitudinal groove guide of the tensioning element in the opening can prevent the tensioning element from tipping over laterally and is preferably designed such that a retraction movement of the tensioning element finds a first stop and, for example for cleaning the parts, enables complete pulling out when the pulling force is increased.
  • the clamping screw can have any suitable training. However, it has proven to be expedient to provide the clamping screw itself with a quick and secure clamping handle, preferably a cross handle or clamping lever.
  • the bearing element should have one or more bolts, primarily threaded bolts, which interact with a rotary part, forged part, casting, welded part, pipe piece, T-piece or polygonal part fastened thereon and provided with the opening, the imaginary axis of the opening being transverse to the imaginary one Axis of the bolt or bolts.
  • the part having the opening can be made in a special way be formed, the bolt or bolts can be interchangeable and thereby suitably adapt to a wide variety of heights or fastening requirements.
  • the bolt or bolts are or are provided for fastening to the machine table, to the device, etc. It is usually done using a thread.
  • the manual clamping device becomes particularly cost-effective if the bearing element consists of a commercially available, preferably drilled-out eyebolt (bolt with "eye” on it), in particular with a rotating part fastened in its eye and provided with the opening.
  • the bearing element can expediently consist of an optionally divided round or polygonal column extending to the machine table for the device, etc.
  • the bearing element is preferably pivotally attached to the machine table, the device, etc., or has a device which enables the pivoting of the bearing element part in which the opening with the clamping element is located.
  • the bearing element can also be fastened to one or more parts, which in turn serve for fastening to the machine table, the device, etc. or for extending the bearing element.
  • Such parts can be pieces of pipe, bolts or polygons. They can also be specially designed for use on grooved or perforated plates.
  • the slope or taper of the imaginary continuation of the opening should be about 4 to 8 degrees, depending on the material conditions, in particular also the coefficient of friction.
  • a guide element fastened to the bearing element expediently provides the clamping element with a flexible stop at the front.
  • the opening in the area in which the tensioning actuation device, in particular a tensioning screw, is supported has a groove or reinforcement for guiding the tensioning actuation device. In this way, an additional force is generated which pushes the tensioning element forward during tensioning. As a result, the angle of the oblique expansion can be smaller.
  • the workpiece (31) against the support surface (32) of a device plate (15) is clamped with a manual clamping device, which is essentially formed by a bearing element (3) with an opening (2), one movable in this opening guided clamping element (1) and a clamping actuator (33).
  • the bearing element here comprises a head piece (3a) which is height-adjustable and rotatable-mounted on a threaded bolt (3b) used as a bearing stand.
  • This threaded bolt is screwed with its two ends into threaded bores of the: head piece (3a) and the device plate (15) and secured against this by a nut (14). Possibly. can also be secured against the head piece (3a).
  • the clamping element (1) shows its greatest thickness close to the front end (2a) of the opening (2) and has a nose (5) protruding outwards from this opening end with a workpiece contact point (19).
  • the point of contact (4) between the clamping element and the inner surface (34) of the opening (2) is close to the front end (2a).
  • a clearance angle (6) is formed between the bottom (5b) of the nose (5) and the top (31a) of the workpiece (31), which is inclined forward / downward, or in the direction of the channel-shaped opening (2).
  • the same clearance angle (7) is between the top (5a) of the nose (5) and the imaginary extension (2b) of the opening (2) is provided.
  • an extension (2d) is provided, in which the bearing point (10) is located.
  • the clamping element has a material thickening (11) which has sufficient play for large clamping stroke movements compared to the wall of the extension.
  • a guiding element (13) designed as a multi-bent wire spring is used, the lower end of which sits in the threaded bolt (3b) and the multi-bent or angled upper end into one Groove (12) engages, which is formed as a circular segment slot from below into the clamping element.
  • This arrangement provides support against lateral tipping over and provides a temporary stop when the tensioning element is pulled back, but enables the tensioning element (1) to be pulled out freely against overcoming the force of the spring element (13).
  • the spring element (13) can also interpose a rigid body which is held in a resiliently movable manner, for example by attaching it to an elastic holder, a rubber bushing or the like.
  • Fig. 2 shows a front view of the engagement of the spring element (13) in the groove (12) and also reveals the rotationally symmetrical shapes of the head piece (3a) and its opening (2).
  • the outer surface (3c) of the head piece is barrel-shaped or spherical and merges into short cylindrical lugs (3d) and (3e). Since the opening (2) is offset upwards relative to the outer surface (3c), a thinner upper lip results in each case compared to a thicker lower lip.
  • the eccentricity of the opening (2) in relation to the outer surface (3c) can change for various tasks, as can the training in the end areas. Possibly. the spherical or barrel shape can continue to the ends (2a) and (2c) of the opening (2).
  • (18) indicates the instantaneous pivot point of the clamping element (1), which here should lie in the same plane as the upper side (31a) of the workpiece (31), and therefore also at the same height as the workpiece Attack point (19).
  • a circle (17) formed around the pivot point (18) through the bearing point (10) has as a tangent the axis of rotation (16) of the clamping screw (8).
  • This arrangement results in a clamping force F at the workpiece application point (19), which is approximately perpendicular to the upper side (31 a) of the workpiece (31) parallel to the axis of the threaded bolt (3b) and thus perpendicular to the contact surface (32) on the device plate (15) works.
  • the power arm (18-10) can be seen several times larger than the load arm (18-19). The force exerted by the clamping screw (8) is multiplied again.
  • a pendulum piece (20) in the form of a spherical section is attached between the nose (5) and the upper side (31 a) of the workpiece (31), which with its spherical upper side (38) can be pivoted on all sides into a
  • the underside of the nose (5) inserts a molded spherical surface (39).
  • a bracket (21) is attached to the rear end (2c) of the opening (2) and thus the head piece (3a), which engages around the clamping screw (8) in its elongated recess and thus guides the play for constant alignment of the clamping element ( 1) in the opening (2) of the head piece (3a).
  • a lateral tilting of the tensioning element is counteracted in particular and a rear stop or a “captive device” is formed.
  • a clamping shoe (22) is used to clamp the workpiece (31) from below, which has a clamping bush (29) with a clamping flange (30) protruding from its upper end.
  • the clamping bush with threaded engagement sits on the threaded bolt (3b) and is guided with a sliding fit in a hole in the device plate (15) so that it can be adjusted in height and swivel so that the clamping flange (30) can support the workpiece support (23) with the clamping force F if the clamping element (1) is actuated.
  • the entire hand clamping device can be swiveled away quickly and also removed.
  • no bending forces are introduced into the device plate (15).
  • the bearing element (3) is formed by a column (24), in the upper end of which the opening (2) for the clamping element (1) is formed.
  • a longitudinal groove (42) is formed in its upper side, in which the pin extension (43) of a screw (44) which is brought down from above engages.
  • the groove end (42a) forms a rigid stop against unintentional pulling out of the clamping element (1). This pulling out is possible after loosening the screw (44).
  • the column (24) is braced on the device plate (15) by an internal cap screw (45) inserted from below.
  • the bearing element (3) is formed by a commercially available drilled eyebolt (25), the eye of which forms the head piece (3a), in its bore (51) there is a collar bushing (52) which is secured by an adjusting screw (53) is and the inner surface (54) the public voltage (2).
  • a pin (46) of the tensioning element (1) engages in a longitudinal slot (47) of the flange bushing (57).
  • FIG. 9 instead of the one-piece threaded bolt (3b) according to FIGS. 1 to 6, a modular stand made of pipe sections (27) and several threaded bolts (28) are formed, which can each have different lengths. For this reason, storage racks of different heights can be assembled quickly and reliably.
  • Fig. 10 first shows that the cross sections of the opening (31) and clamping element (32) have a polygonal shape, in particular a rectangular shape.
  • the lower end of the threaded bolt (3b) is screwed here into a plate-shaped part (60) which, according to FIG. 11, has the approximate outline of an egg and rests on a perforated or grooved plate (61), which in the conventional manner also a plurality of clamping holes (62) is provided.
  • a head screw (63) engages in one of these clamping bores and is adjustable in a cross-section T-shaped longitudinal slot (64) that is adjustable transversely to the threaded bolt (3b), so that the threaded bolt (3b) is radially opposite the head screw (63) over a wide range. shifted and is provided to be pivotable. Since the workpiece (31) also comes to rest on the part (60), bending moments are not introduced into the perforated or grooved plate (60).
  • an oblique widening (55) is formed in the front area, in which the tensioning element (1) touches the opening (2) during tensioning.
  • the tensioning element (1) touches the opening (2) during tensioning.
  • the friction of the tensioning element on the wall of the opening is reduced; during tensioning, the counter-bearing point of the tensioning element (1) then slides slightly forward and compensates for the material-inherent retraction of the bearing element (3), in particular from FIG. 3b.
  • a guide element attached to the bearing element in the form of the spring element (13) forms a flexible stop (56) with its front end bent upwards. Its lower end sits, as already in Fig. 1, in a central bore (66) of the threaded bolt (3b), which has an extension at the top, which possibly receives a rubber bushing or the like. Elastic filling.
  • the clamping element (1) After inserting the workpiece (31), the clamping element (1) is pushed forward against the resilient stop (56), but can still move slightly beyond the initial contact point when clamping because of its flexibility.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (29)

1. Dispositif de serrage destiné à être fixé sur des tables de machines-outils ou installations similaires et muni d'un élément de serrage (1), d'une poignée de serrage (33) elle-même munie d'une vis de serrage (8), et d'un élément de support (3), lequel présente une embouchure (2) en forme de canal sur toute sa longeur à travers laquelle l'élément de serrage (1) est guidé et dans laquelle il reste mobile, ladite poignée de serrage (33) entrant elle-même en contact avec l'embouchure par l'intermédiaire d'un point d'appui (10) et le dit élément de serrage (1) entrant lui-même en contact avec la surface intérieure de l'embouchure (2) à une très courte distance de l'extrémité avant de celle-ci, qui est orientée vers la pièce d'oeuvre (31) pendant le serrage, lequel élément de serrage (1) doit ressortir de cette embouchure par l'avant de celle-ci au moins et se trouver relié à la poignée de serrage (33) par l'intermédiaire de son extrémité arrière, qui se trouve à l'opposé de la pièce d'oeuvre (31); lequel dispositif de serrage, objet des présentes revendications, étant caractérisé par le fait que, pendant le serrage, le point de rotation (18) de l'élément de serrage se situe sur une ligne qui traverse le point d'attaque sur la pièce d'oeuvre (19) et se déplace presque parallèlement à l'axe longitudinal de l'embouchure en forme de canal, par le fait que le bras de levier avant (18-19) de l'élément de serrage (1) est beaucoup plus court que le bras de levier arrière (18-10) et par le fait que l'embouchure (2) située dans l'élément de support (3) et dans laquelle l'élément de serrage (1) est guidé, s'élargit en forme de cône (55) dans sa partie avant, à l'endroit-même où, pendant l'opération de serrage, l'élément de serrage (1) entre en contact avec la surface intérieure (34) de celle-ci (2).
2. Dispositif de serrage selon la revendication 1 et caractérisé par le fait que, dans la zone (4) où il entre en contact avec la surface intérieure (34) de l'embouchure (2), l'élément de serrage (1) est incurvé soit dans le sens de la longueur, soit dans le sens de la largeur selon l'option choisie.
3. Dispositif de serrage selon une des revendications précédentes, et caractérisé par le fait que, dans la zone où elle entre en contact avec l'élément de serrage (1), la surface intérieure (34) de l'embouchure (2) est incurvée soit dans le sens de la longueur, soit dans le sens de la largeur selon l'option choisie.
4. Dispositif de serrage selon une des revendications précédentes, et caractérisé par le fait que le jeu observé en direction verticale derrière la partie de l'élément de serrage (1) qui entre en contact avec la surface intérieure (34) de l'embouchure (2), est important et que le jeu observé en direction horizontale est au moins faible.
5. Dispositif de serrage selon une des revendications précédentes, et caractérisé par le fait que la section de l'élément de serrage (1) qui entre en contact avec la surface intérieure (34) de l'embouchure (2) est ronde ou polygonale et que cette section remplit presque entièrement la section de l'embouchure elle-même.
6. Dispositif de serrage selon une des revendications précédentes et caractérisé par le fait que la partie de l'élément de serrage (1) qui sort de l'embouchure (2) par l'avant de celle-ci, doit être munie d'un profil correspondant à la tension exercée sur la pièce d'oeuvre, et notamment d'un taquet de serrage (15), dont la face supérieure (5a) est située à une certain distance ou présente un angle de dépouille (7) par rapport à la prolongation fictive de la surface intérieure (34) de l'embouchure (2) et dont la face inférieure (5b), derrière le point d'attaque de la pièce d'oeuvre (19), est située à une certaine distance ou présente un angle de dépouille (6) par rapport à la pièce d'oeuvre (31).
7. Dispositif de serrage selon la revendication 6 et caractérisé par le fait que l'élément de serrage (1) présente sur sa partie arrière un renforcement (11) de préférence en forme de boule destiné à recevoir un élément permettant d'actionner le dispositif de serrage (8).
8. Dispositif de serrage selon la revendication 7 et caractérisé par le fait que l'élément de serrage (1) présente sur sa partie arrière une ouverture de passage (35) munie d'un filetage et orientée de préférence en diagonale vers le haut.
9. Dispositif de serrage selon la revendication 8 et caractérisé par le fait qu'une vis de serrage (8) a été vissée dans l'ouverture de passage (35) munie d'un filetage, laquelle vis prend appui sur un palier fixe (10).
10. Dispositif de serrage selon la revendication 8 ou 9 et caractérisé par le fait que l'inclinaison de l'ouverture de passage (35) correspond approximativement à la tangente d'un cercle fictif (17) décrit autour du point de rotation (18) de l'élément de serrage (1), le point d'appui (10) de la vis de serrage (8) représentant le point de contact de la tangente (16) avec le cercle (17).
11. Dispositif de serrage selon la revendication 9 ou 10 et caractérisé par le fait que le palier fixe (10), sur lequel la vis de serrage (8) prend appui, est constitué par la surface intérieure (34) de l'embouchure (2), et par le fait que l'embouchure (2) présente un profil autorisant la vis de serrage sistera de préférence en un évasement en forme de décrochage (2d).
12. Dispositif de serrage selon la revendication 9 ou 10 et caractérisé par le fait que le palier fixe (10) est consitué par un élément fixé sur l'élément de support (3), lequel élément étant, de préférence, muni d'une butée destinée à recevoir la vis de serrage (8).
13. Dispositif de serrage selon l'une des revendications 9 ou 10 et caractérisé par le fait que le palier fixe (10) est constitué par un boulon, de préférence un boulon fileté (3b), fixé sur la table de la machine-outil ou sur une installation similaire, lequel palier étant, de préférence, muni d'une butée destinée à recevoir la vis de serrage (8).
14. Dispositif de serrage selon une des revendications précédentes, et caractérisé par le fait que l'élément de serrage (1) présente une gorge orientée dans le sens de la longueur (12, 42) sur laquelle glisse un élément de guidage (13, 43)-de préférence un élément à ressorts (13)-fixé sur l'élément de support (3).
15. Dispositif de serrage selon une des revendications précédentes et caractérisé par le fait qu'un élément de guidage (46) est fixé sur l'élément de serrage (1), lequel élément de guidage glisse sur la gorge longitudinale (47) dont est muni l'élément de support (3).
16. Dispositif de serrage selon les revendications 14 ou 15 et caractérisé par le fait que la gorge (12, 42, 37) est munie d'une butée particulièrement destinée à limiter provisoirement le mouvement de retour longitudinal de l'élément de serrage (1).
17. Dispositif de serrage selon l'une des revendications de 14 à 16 et caractérisé par le fait que l'élément de guidage (13) et la gorge (12) ont été conçus de manière telle qu'il soit possible de retirer entièrement l'élément de serrage (1).
18. Dispositif de serrage selon une des revendications précédentes et caractérisé par le fait qu'il a été prévu au niveau du point d'attaaque (19) de l'élément de serrage (1) un élément articulé (20) ou plusieurs éléments mobiles destiné(s) à s'adapter sur la surface de la pièce d'oeuvre devant être serrée (31a).
19. Dispositif de serrage selon l'une des revendications de 9 à 18, et caractérisé par le fait que la vis de serrage (8) est munie d'une poignée de serrage (9), de préférence en forme de croisillon ou de levier.
20. Dispositif de serrage selon l'une des revendications de 9 à 19 et caractérisé par le fait que la vis de serrage (8) est guidée par un étrier (21) fixé sur l'élément de support (3).
21. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'élément de support (3) est incurvé sur son côté supérieure (3c).
22. Dispositif de serrage selon l'une des revendications précédentes, et caractérisé par le fait que l'élément de support (3) est composé d'un ou de plusieurs boulons destinés à serrer le dispositif sur la table de la machine-outil-de préférence des boulons filetés (3b, 28) avec les écrous correspondants-, lequel élément de support est muni d'un en-bout (3a) lui-même muni d'une embouchure (2) et composé d'une pièce pouvant être tournée, forgée, moulée en fonte, soudée ou en forme de tube, l'axe fictif de l'embouchure (2) se trouvant orienté perpendiculairement à l'axe fictif du ou des boulons (3b, 28).
23. Dispositif de serrage selon la revendication 22 et caractérisé par le fait qu'un sabot de serrage (22) a été fixé-selon l'option choisie-sur le ou les boulon(s) fileté(s) (3b, 28) ou sur la table de la machine-outil ou sur une installation similaire, lequel sabot est placé sous la pièce d'oeuvre (31) ou le support de pièce d'oeuvre (23) et est destiné à bloquer la pièce d'oeuvre dans le sens inverse du serrage.
24. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'élément de support se compose de préférence d'un boulon à oeillet (25) (boulon muni d'un "oeillet") classique, lequel élément de support étant destiné à recevoir l'élément pivotant (26) fixé sur son oeillet (3a, 54) et muni de l'embouchure (2).
25. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'élément de support (3) se compose entièrement ou partiellement d'une tige ronde ou polygone (24, 27, 28)-selon l'option choisie-et séparée en segments et notamment orientable.
26. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'élément de support est fixé sur des pièces conçues spécialement pour des plaques munies de gorges ou de perforations.
27. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'oblique ou la conicité de l'évasement (55) forme un angle de 4 à 8° avec une ligne fictive située dans le prolongement de l'embouchure (2).
28. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par la présence d'une butée flexible (56) destinée à être installée en avant sur l'axe de l'élément de serrage (1) et qui se compose notamment d'un élément de guidage (13) à ressort fixé sur l'élément de support (3).
29. Dispositif de serrage selon l'une des revendications précédentes et caractérisé par le fait que l'embouchure (2) comporte, au niveau de la zone, sur laquelle s'appuie la poignée de serrage (33), et notamment la vis de serrage (8), une gorge ou une rainure (59) servant à recevoir un élément de serrage (8).
EP87900134A 1986-01-02 1986-12-19 Bride de serrage manuelle pour fixation aux tables de machines et a des dispositifs etc. Expired - Lifetime EP0252933B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87900134T ATE54860T1 (de) 1986-01-02 1986-12-19 Handspannvorrichtung zum befestigen auf maschinentischen, vorrichtungen etc.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19863600010 DE3600010A1 (de) 1986-01-02 1986-01-02 Handspannvorrichtung zum befestigen auf maschinentischen, vorrichtungen etc.
DE3600010 1986-01-02
DE3640869 1986-11-29
DE19863640869 DE3640869A1 (de) 1986-11-29 1986-11-29 Handspannvorrichtung zum befestigen auf maschinentischen, vorrichtungen etc.

Publications (2)

Publication Number Publication Date
EP0252933A1 EP0252933A1 (fr) 1988-01-20
EP0252933B1 true EP0252933B1 (fr) 1990-07-25

Family

ID=25839900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87900134A Expired - Lifetime EP0252933B1 (fr) 1986-01-02 1986-12-19 Bride de serrage manuelle pour fixation aux tables de machines et a des dispositifs etc.

Country Status (4)

Country Link
EP (1) EP0252933B1 (fr)
AT (1) ATE54860T1 (fr)
DE (1) DE3673014D1 (fr)
WO (1) WO1987004103A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729126A (en) * 1953-02-02 1956-01-03 Standard Parts Co Knob shoes
US2872854A (en) * 1957-01-23 1959-02-10 Central Technical Inc Workpiece supporting clamp
FR1230092A (fr) * 1959-06-03 1960-09-13 Dispositif de fixation de pièces sur table de machine-outil
DE1427091A1 (de) * 1961-08-16 1968-12-12 Bruecher & Co Ludwig Spannvorrichtung
GB1599317A (en) * 1978-05-23 1981-09-30 Bowman H P Work piece clamping method and clamp therefor
US4470586A (en) * 1982-07-09 1984-09-11 Spencer Philip P Machine clamp rockable in T slot

Also Published As

Publication number Publication date
ATE54860T1 (de) 1990-08-15
EP0252933A1 (fr) 1988-01-20
WO1987004103A1 (fr) 1987-07-16
DE3673014D1 (de) 1990-08-30

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