SU1215932A1 - Part-gripping device - Google Patents

Description

The invention relates to a machine tool industry, and more specifically to a clamping device for mounting and securing workpieces.

The purpose of the invention is to ensure safety at work.

FIG. 1 shows a device with a screw reinforcing mechanism, in section (general view); in fig. 2 shows section A-A in FIG. one; in fig. 3 - device with wedge amplifier, general view.

In the housing 1 of the device there are a fixed support 2 with clamping fingers 3 dl. the machined part 4 and the clamping element 5 mounted on the rod 6 placed in the housing 1 and spring 7 spring-loaded relative to it in the direction of the supply of the clamping element 5. The housing also has a reinforcing mechanism 8, which may be different, for example : nuts 9 and screw-pusher 10 (Fig. 1) or pusher 10 having a wedge surface (Fig. 3). The pusher of the reinforcing mechanism receives movement from the drive, the type of which may be different. The drive can be built into the device (Fig. 3) or it can be located separately at the corresponding positions of the equipment, where an amplifying mechanism 8 is connected to It.

Between the brush 6, the element 5 and the pusher 10 of the reinforcing mechanism 8 in the housing 1, a shaft 13 is rotatably mounted in sleeves I and 12 and carries a rotary cam 14 and has its own drive 15, in this case a handle. The cam 14 is mounted on the shaft 13 with the possibility of an angular play and its protrusion 16 enters the corresponding groove of the rod 6. The cam side opposite to the protrusion, intended for contact with the pusher 10, is made according to the selected type of mechanism 8: when screw-type, the cam 14 has a protrusion 17 (FIG. 1), and with a wedge - the corresponding bevel (Fig. 3).

Depending on the dimensions of the part, the device may contain several

the clamping elements 5. In this case, all the cams 14 (according to the number of elements 5) are mounted on a common shaft 13 with a common drive 15.

The work is explained in a specific example of a device with a screw-type reinforcing mechanism.

To release the part 4, after finishing the machining with the drive of the reinforcing mechanism, the nut 9 is rotated, while the pusher 10 is retracted into the nut 9 and releases the cam 14. Then, the shaft 13 and the cam 14 turn clockwise from the corresponding activation of the actuator 15 (movement of the handle) which, with its protrusion 16, acts on the rod 6 of the element 5, moving it downwards (inside the housing). In this case, the spring 7 is compressed. The actuator 15 fixes the position of the element 5 thus retracted. The part 4 is retracted by the hand during the retraction of the element 5 and then removed from the fingers 3.

The installation and clamping of part 4 is carried out in the following sequence.

In the retracted position of the element 5, the part 4 is mounted on the fingers 3. By switching the actuator 15, the shaft 13 and the cam 14 are rotated counterclockwise, releasing the spring 7. The rod 6 under the action of the spring moves upward and leads the element 5 to the part 4, which allows the operator remove your hand from the details. Then, by turning on the drive of the reinforcing mechanism, the pusher 10 moves, which, through the cam 14, transmits to the rod 6 and, consequently, the element 5, the force required to guarantee the clamping of the part.

To ensure safety, the activation of the drive of the reinforcement mechanism may be appropriately blocked.,

The use of the proposed device in comparison with the known one improves the safety conditions during operation, allows setting and clamping different parts and shapes in configuration and size.

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Compiled by E. Shcheslavska

Editor P. KosseyTehred I. VeresKorrektor L. Patay

Order 940/16 Circulation 826 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

DEVICE FOR CLAMPING PARTS, in the housing of which a spring-loaded clamping element is placed, connected to the drive by means of a cam mounted on the shaft, characterized in that, in order to ensure safety, the device is equipped with a reinforcing mechanism placed in the housing with the possibility of periodic interaction with the cam. FIG. 1 SU about 1215932>