SU1283025A1 - Device for clamping machined articles - Google Patents

Abstract

The invention relates to mechanical engineering, in particular, can be used in devices for multi-operational CNC machines. The aim of the invention is to expand the technological capabilities of the device by adjusting the longitudinal movement of the sticking, simplifying adjustment to the size of the treated area. A power hydraulic cylinder of 3 tons of a dry type is built into the housing 1 of the device. A thrust pin 7 is fastened on the rod of the latter, bearing a clamp 8 with a groove 9. On the clamp 9, a spring-loaded pusher 17 is mounted cooperating with an emphasis 18 fixed on the stop stud 7. On the case 1 of the device an adjustable support 12 is installed, with which the clamp is pivotally connected 8. The device has hydraulic cavities 19 and 20 for supplying the working medium, which are connected when clamping the workpiece with a hydraulic plunger 16, and during squeezing - with a check valve 21. Adjusting the longitudinal movement of the clamp 8 schestvl a selection of the necessary height adjustable support 12 is provided and the groove 9 and the lever 14. raznoplechim 1 ZP f-ly, 2 ill. Q cl

Description

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The invention relates to mechanical engineering, in particular, can be used in devices for CNC multi-irration machines.

The purpose of the invention is to expand the technological capabilities of the device by adjusting the longitudinal movement of the sticking, simplifying adjustment to the size of the workpiece.

FIG. 1 shows a device for clamping a workpiece in its initial position, a slit; in fig. 2 - the same, side view.

The device (Figs. 1 and 2) comprises a housing 1 with a strip 2 for mounting on a machine table. The power hydraulic cylinder of 3 tons of the bringing type is built in the device case. The hydraulic cylinder consists of a piston with a rod, a spring 4, a lid 5 and a locking ring 6. A supporting stud 7 is fastened to the cylinder rod, bearing a clamp 8 with a groove 9. The clamp 8 is supported in the working position by a spring 10, a nut 11, and shields.

An adjustable support 12 is installed on the device body 1, with which a clamp 8 is connected with a pin 13 and a groove 9 connected to the hinge. The mechanism of longitudinal movement of the clamp 8 is made in the form of a raznooplechny lever 14 with an axis 15 fixed on the housing and a hydraulic plunger 16 installed also in case. On the tack 8 mounted spring pusher 17, which interacts with the stop 18, mounted on the thrust pin 7.

The device has hydraulic cavities 19 and 20, which are connected when clamping the workpiece with a hydraulic plunger 16, and when pressed, with a check valve 21. O-rings 22-24 serve to seal the connections.

The device for clamping the processed products works as follows.

When supplying the working medium under pressure to the cavity 19, the check valve 21 is closed, the hydraulic plunger 16, moving to the left, turns the lever with different shoulders 14 around the axis 15. The lever with different shoulders 14 moves the clamp 8 to the working position and at the same time stops 18 compresses the spring in the pusher 17.

After the hydraulic plunger 16 is fully moved to the left, the hydraulic cavities 19 and 20 are connected, the working medium moves the piston of the hydraulic power cylinder downward, the latter interacting with the thrust pin 7, and the nut 11 turns the clamp 8 around the pin 13

and compresses the springs 4 and 10. When turning the tack 8, the workpiece is clamped.

The sticking of 8 to the initial position occurs after the pressure in cavities 19 and 20 is released. The working medium is expelled from cavity 20 through the check valve 21 by the piston of the power hydraulic cylinder 3, and from cavity 19 by the hydraulic plunger 16.

The piston of the hydraulic cylinder moves upward under the action of the force of the spring 4 and, interacting with the thrust pin 7, spring 10, nut And, turns the tack 8 around the pin 13. The spring 8 pusher 17 moves the tack 8 to the left.

The adjustment of the longitudinal movement of the clamp 8 is carried out by selecting the required height of the adjustable support 12 and is provided with a groove 9.

The height of the device is reduced due to the fact that the hydraulic plunger 16 carries out the longitudinal movement of the sticking 8, and the working stroke of the power hydraulic cylinder 3 is used only for clamping the workpiece.

Claims (2)

1. A device for clamping workpieces, in the case of which a stop pin associated with sticking, a power cylinder and a sticking mechanism are installed, characterized in that, in order to expand technological capabilities by providing adjustment of the longitudinal movement of the sticking device, an adjustable a support pivotally connected to the sticking, hydraulic plunger, the cavities of which are connected to the cavity of the power hydraulic cylinder, and a spring-loaded pusher with an emphasis, are installed respectively, on the tack and thrust pin with the ability to interact with each other, while the movement mechanism is made in the form of an axle located on the housing with a razneplechim lever mounted with the ability to communicate with one end of the hydraulic plunger, and the other with the clamp, and the stop stud is connected with rod of a power hydraulic cylinder. 2. The device according to claim 1, characterized in that on the side surface the sticking the groove is made, and the hinged connection of the adjustable support with the clamp is made in the form of a pin designed to interact with the walls of the groove. cpL / e.Z