SU808242A1 - Clamp - Google Patents

Description

(54) PUSHING

one

The invention relates to mechanical engineering, in particular, to devices used for securing parts when machining them on a metallossing machine.

Known tack, in the case of which is placed m ha with a clamp, installed with the possibility of rotation by means of a screw groove made on it and rigidly fixed in the case of the finger l.

The disadvantage of this device is a large stroke, which increases the size of the device.

The purpose of the invention is to increase the compactness of the structure.

This goal is achieved by the fact that the contract zone of the groove with a finger is removed from the external surface of the sticking point, in this case either the finger is stepped or the groove is stepped.

FIG. 1 shows a sectional clamping device (a version with a stepped finger); in fig. 2, section A-A in FIG. one; on. FIG. 3 device, option with a step groove, cross section.

In case 1 of the device the rotary clamp 2. is screwed.

the groove 3 of the clamp interacts with a finger 4 fixedly mounted in the housing 1. Through the sleeve 5, the clamp 2 is connected to the stem 6 of the power cylinder 7. The cracker 8 protects the sleeve 5 with the stem 6 from being twisted. The contact area of the groove with the finger is removed from the outer surface of the sticking 2. For example, the finger 4 can be made stepped (Fig. 2) and interact with a smooth groove. A notch (Fig. 3) can be made stepwise in section, and a finger 9 with equal strength across the section (Fig. 3) or

smooth.

The device works as follows.

To release the fixed workpiece, pressure is applied to the piston cavity of the cylinder 7. The rod 6 moves to the left, moving the clamp 2. In addition, as a result of the interaction of the screw groove 3 of the sticking tongue 4, the clamp 2

at the same time it rotates, allowing free removal of the workpiece from the processing position.

To secure the follower, the parts supply pressure to the rod end of the cylinder 7. The rod 6 moves to the right, pulling the clamp 2, which simultaneously rotates as a result of the interaction 3 with the finger 4.

Due to the fact that in the proposed device the contact area of the groove with a finger is removed from the outer surface of the sticking point, it is located on a diameter smaller than the outer diameter and the stroke of the rod is significantly reduced compared with the known device with a nominal diameter of the sticking tongue and a lifting angle of the screw groove (its working parts).

At the same time, making the groove deeper does not significantly affect the strength of the sticking, since the sticking works on stretching and its strength depends on the area of the whole cross-section of the sticking.

Increasing the finger size also does not have a significant effect on the operation of the device, since the turning points are insignificant.

Claims (3)

1.The carrier, in the case of which a ha is located with a clamp, is rotatably mounted by means of a screw groove and a finger firmly fixed on it, characterized in that, in order to increase the compactness of the structure, the zone of contact of the groove with the finger is removed from the outer surface stuck. 2.Privat according to claim 1, characterized in that the groove is made stepwise. 3.Pri-vat according to claim 1, characterized in that the finger is stepped. Information sources, taken into account in the examination 1. USSR author's certificate No. 325151, cl. 23 Q 3/06, 1969.