DE7330017U - Clamping device for workpieces - Google Patents

Description

Eichard Hir3ohmann '"". . "./*." '! "J! August 6, 1973 TPA / Stad / El

, Radio technical work: · '· ·; _: "; · ·, ',';

Esslingen a.N.

Cttilienatr. 19 ' *

Utility model registration 1 "Clamping device for workpieces" · #

Clamping device-Jiach become the preamble of claim 1 mainly used in multi-purpose manufacturing facilities, with where several work steps are carried out on a workpiece using different processing devices can be carried out one after the other with the aid of an automatic control system.

The pressure trigger for actuating the clamping device can e.g.

act hydraulically, pneumatically or electromagnetically.

In the case of such mass production facilities, the to clamp individual workpieces quickly and precisely so that they are always exactly in the same place and in the same age.

The innovation is based on the task of gejiäß a clamping device To create the preamble of protection claim 1 that meets these requirements and is robust and simple in structure. This task will according to the innovation by the characterizing part of this claim specified constructive measures solved.

Partial embodiments of the subject matter of claim 1 can be found in the subclaims.

For example iet duroh the constructive measure according to claim 2 of the The advantage achieved is that the Spannsangs do not come off by themselves if there is no more pressure on the pressure release after closing.

In an embodiment according to claim 4 is advantageous a second print trigger saved *

The figures show an embodiment of the clamping device according to the innovation. Figures 1, 3 and 4 are three views from two sides and 70η above · In FIG. 1, one half of the with part. ¹ '. Never symmetrical door direction in longitudinal section and in FIG. 2 a cross section is shown. Fig. 5 shows the partially ge cut view from below without the base plate and Fig. 6 is a perspective view of the adjustable wedge »

Screws on a base plate 1 with holes 2 to accommodate fastening are on a raised middle part 3 two stand plates 4 » screwed on · In the space between the stand plates 4 »5 are two Sohubstangen 6.7 with a square <Ju section inserted in such a way that

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that they rest increased to de ^"1 central part 3 of the base plate 1 · In an opening 8 in the middle of the support plates 4» 5 is inserted between the two Schuostangen 6, 7, a vertically displaceable with the thrust rod axis wedge 9, the upwardly inclined surfaces Io to the correspondingly beveled inner end faces of the push rods 6, 7 rest.

Zvci ir.it the wedge 9 cylindrical pin 11 made in one piece, 12 are in the cover plates 13, stored 14 the opening 8 in the stator plates 4 »Z cover ₀ at one of the studs, eg 11 is anzuschiiessen the pressure trigger, the Clamping device Gchlieste For opening, a compression spring 31 'is used, which lies between the end face of the other bolt 12 and the end of a blind hole of the cylindrical holding device 3 ° fastened to the cover plate 13 with a flange. A guide plate 15 on the wedge 9 engages over dip push rods 6, 7 and prevents them from being able to move upwards out of their operating position.

On the outer end faces of the two push rods 6, 7 lies .Each one projection 16 of the lower leg 17 of a two-armed

[Lever on, which is about an axis mounted in the stand plates 4 »5

is rotatable. The upper leg 19 of the two-armed lever presses more gently Tip of an adjusting screw 2o, which can be fixed by a side screw 21, each against a horizontally displaceable collet half 22, 23, which has a recess 24 on its inner end face for receiving the workpiece. The collet halves 22 and 25 with a rectangular cross-section have on their underside each has a guide extension 25 »26 with a rectangular cross-section, which is guided between the stand plates 4» 5.

Cover plates 2 ^ screwed onto the stand plates 4 »5 engage in notches 25, 26 and prevent the collet halves 22, 23 from being able to move vertically out of their operating position»

A bolt 28 is inserted into the guide extension 26 of the collet chuck half 23 and is pressed by a screw compression spring 29 against the end face of the guide extension 25 on the collet chuck half 22. This spring force has the effect that the inner end faces of the push rods 6, 7 constantly rest on the inclined surfaces Io of the wedge 9.

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Claims (2)

- 3 protection claims 1 »Clamp to be closed and opened with a pressure release ·» Device for workpieces, characterized by the fact that two collet halves (22, 23) which can be moved in the horizontal direction by the upper legs (19) of two-armed levers which are rotatable about horizontal axes against the outer end faces a spring force are thereby compressible that the lower legs (17) of the lever by two push rods (6, 7) tmd one between these wedge (9) which can be displaced in the direction perpendicular to the direction of displacement of the collet halves (22, 23) can be pushed outwards with a trapezoidal longitudinal section 2. Clamping device according to claim 1, characterized in that the angle of inclination of the inclined wedge surfaces (lo) is so small that the wedge (9) can be firmly clamped in a self-locking manner between the push rods (6, 7) is· 3 · One Para device according to claim 1 and 2, characterized _f in that the spring force for urging the collet halves (22, 23) by eir> ^ in a bore of a Führungeansatzes a collet chuck half (23) of the coil spring used (29) he witnesses (26) actual which presses one bolt (28) against the face of the guide attachment (25) of the other collet half (22) 4 · Clamping device according to claims 1 to 3 »daduroh characterized» that _{a compression spring is arranged between the end face of one of the two bolts (ll f} 12) connected to the wedge (9) and intended for connection to a pressure release and a holding device (3o) · 7311117 in *