Automatic multi-claw hydraulic returning and clamping chuck and use method thereof

Abstract

The invention relates to a machine tool accessory and particularly provides an automatic multi-claw hydraulic returning and clamping chuck. According to the automatic multi-claw hydraulic returning and clamping chuck, the technical problems that automatic stable clamping and automatic blanking cannot be realized by workpieces are solved. The automatic multi-claw hydraulic returning and clamping chuck comprises a rotary oil cylinder and a clamp body, wherein a communicator oil cavity is arranged in an inner cavity of the clamp body; a plurality of clamping plungers are arranged on the clamp body in the radial direction of the clamp body; the clamp body is also provided with rocker arm type claws matched with the clamping plungers through a plurality of pin rolls respectively; claw springs are arranged between the rocker arm type claws and the clamp body respectively; a plurality of jacking pistons are arranged on the clamp body in the axial direction of the clamp body; and the automatic multi-claw hydraulic returning and clamping chuck further comprises a driving piston communicated with the tail end of the communicator oil cavity and is connected with the rotary oil cylinder through a jacking rod. The invention also provides a method for processing operation by using the automatic multi-claw hydraulic returning and clamping chuck.

Description

technical field [0001] The invention relates to a machine tool accessory, in particular to a multi-claw hydraulic automatic material return and clamping chuck, and the invention also provides a method for using the multi-claw hydraulic automatic material return and clamping chuck. Background technique [0002] When using a machine tool to cut, grind, cut, and mill a workpiece, it is generally necessary to clamp the workpiece first. When the workpiece itself has a regular shape, such as a cylinder, ring, square, etc., the clamping operation is relatively simple. However, clamping is more difficult if the workpiece is irregularly shaped, or if there are large tolerances in the rough workpiece. Taking the cutting of piston ring blanks as an example, in the current domestic and foreign piston processing industries, generally thicker piston ring blanks are cast first, and then the blanks are cut into thinner ring parts through the cutting process. During the cutting operation, ...

AI Technical Summary

Problems solved by technology

This method has low efficiency and is not suitable for automated production; if the machine automatically finds and fixes at random, it cannot automatically find the most ideal fixing point, so it is necessary to increase the tension as much as possible. After the cutting operation is completed, the thinner finished product The ring part is bent and deformed because it cannot bear the tension force originally applied to the thicker blank, and the processing scrap rate is high

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