SU846231A1 - Automatic arrangement for basing and clamping parts - Google Patents

Description

(54) AUTOMATIC DEVICE FOR BASING

AND CLAMP DETAILS

I

The invention relates to a machine tool industry, in particular to tools for metalworking machines.

Closest to the present invention is an automatic device for positioning and clamping parts, comprising basic elements, a retractable rotary clamp and a movable clamp drive cam, which moves the clamp to the clamped part, after which the inclined cam of the cam, interacting with the clamp, turns it and clamping the part between the fixed base element of the fixture and the clamp (}.

The disadvantage of this device is the low reliability of the installation of the part in the devices in the case of sticking as a retractable base.

The purpose of the invention is to improve the reliability of the part based by pressing the part to the sticking and fixing the latter.

To achieve this goal, the cam is equipped with a two-arm lever for pressing one part against the strap with one shoulder, and the cam is set to interact with the second shoulder of the two-arm lever and with the clamp.

The drawing shows the proposed fixture.

The device includes a housing I with a movable plate 2 moved by adjusting screws 3. The workpiece 4, for example, a camshaft, is mounted on a fixed prism 5. On. plate 2 has a clamp cylinder 6 connected by a self-aligning clamp

to 7. In addition, there is a brace on plate 2: 8 n fixation cylinder 9 associated with cam 10 having horn rollers P. An axle 12 is mounted on cylinder rod 9. Extendable tack 13 has an L-shaped shape. Axis of rotation sticking

15 is fixed in the arm 8. A double-arm swivel lever 14 is mounted on the tack, one end of which interacts with the part and the other, equipped with a roller 15, with a bevel 16 of the cam 10. The lever 14 also interacts with the spring 17 mounted on the tack 13.

The device works as follows.

In the initial position, the self-aligning clamp 7 and the clamp 13 are retracted from the part 4 mounted on the prism 5 by means of corresponding cylinders. The catch of the clamp 13 is retracted by means of a pin 12, which interacts with the vertical clamp arm during the piston rod stroke and rotates it clockwise . When pressure is applied to the rodless cavity of the cylinder 9, the cam 10 moves to the left and at the same time the clamp 13 under its own weight turns clockwise until it stops in the protrusion of the bracket 8. In this position, the jaw sponge 13 is located opposite the base surface of the part. With the further course of the cam 10 to the left, the rollers II fix the grip 13. With the further movement of the cam to the left, the bevel 16, interacting with the roller 15, turns the double-shouldered lever 14 and presses the part to the grip 13. This secures the fixation and basing of the part, after which the cylinder 6 through Clamp 7 produces the final clamped parts in the fixture.

Reliable basing of parts in this device contributes to the accuracy of their processing on the machine.

Claims (1)

Invention Formula . An automatic device for positioning and clamping parts, comprising; Basic elements, retractable swivel clamp and movable actuator cam, characterized in that, in order to increase the reliability of the part's base by pressing the part to the clamp and fixing the latter, the clamp is equipped with a double-arm lever for pressing the part to the clamp with one arm with the second shoulder of the two shoulders and with the sticking. Sources of information taken into account during the examination 1. Hiram E. Grant. Jigs and fixtures Me Grow-Hill book company. New-York, 1967, sketch number 595. s- V, -fea