A vacuum fixture automatic adjustment device for polishing workpiece

Abstract

The invention discloses an automatic adjustment device for a vacuum clamp for polishing workpieces. The automatic adjustment device comprises a hydraulic clamp fixing module, a vacuum clamp module and a vacuumizing module, wherein the vacuum clamp module comprises an upper clamp and a lower clamp, an upward concave structure is arranged at the bottom of the upper clamp, a downward convex structure is arranged at the upper end of the lower clamp, the upward concave structure of the upper clamp and an upward convex structure of the lower clamp form a sealed cavity, a plurality of through holes communicating with the cavity are arranged in the bottom of a circular workpiece installation groove, and a vacuum connector used for connecting the vacuumizing module is arranged at the bottom of a downward concave structure of the lower clamp; the vacuumizing module comprises an air pump, a vacuum pipeline and an air pressure sensor; the hydraulic clamp fixing module comprises a fixed support gasket, hydraulic clamps and a plurality of floating supports used for providing an auxiliary support force; and each floating support comprises a floating support rod, a support head, a gasket, a compression spring and an adjustment nut. The automatic adjustment device disclosed by the invention is simple and compact in structure, low in production cost, reasonable in design, convenient for workpiece clamping, capable of automatically adjusting, and wide in use range.

Description

technical field [0001] The invention relates to the technical field of ultra-precision machining, and more specifically, relates to an automatic adjustment device for vacuum fixtures of polished workpieces. Background technique [0002] A new method of gas-liquid-solid three-phase abrasive flow polishing, using a multi-directional injection method to drive a swirling flow field in a high-speed turbulent state in the large-area micro-pitch gap formed between the polishing tool and the workpiece surface, The microbubbles in the swirling flow field can be collapsed in an appropriate manner under the control of the amount of air and the flow rate. The collapse process accelerates the nearby abrasive particles, and the joint result of the two causes the movement direction of the abrasive particles to appear Larger randomness, the contact probability between the abrasive grains and the convex peaks of the workpiece processing surface is greatly improved, and the force of the abras...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of clamping the polishing workpiece and automatically adjusting the distance between the workpiece and the polishing tool in the experimental research process of gas-liquid-solid three-phase abrasive flow polishing, and proposes a simple structure, Easy to control, can process different diameters, different shapes, different material workpiece vacuum fixture automatic adjustment device for polishing workpieces

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