Vacuum clamp for machining porous sheet and using method thereof

Abstract

The invention relates to a vacuum clamp for machining a porous sheet and a using method thereof and belongs to the technical field of conveying thin appliances. The vacuum clamp comprises a baseplate, a positioning device, an air guide device, a vacuum generating device and a sealing device; the vacuum clamp is characterized in that: shallow cavities adaptive to the shape of a machined part are distributed on the baseplate; air guide holes are distributed in each shallow cavity; each shallow cavity and the underside of the machined part form a vacuum cavity, so the machined part is adsorbed on the baseplate; the positioning device limits the movement of the machined part on the baseplate so as to make the machined part in a clamping state; the air guide device is connected with the baseplate and the vacuum generating device; the sealing device comprises sealing bars and through hole sealing elements; the sealing bars are distributed on the peripheral edges of the shallow cavities; and the through hole sealing elements are distributed in the shallow cavities. The vacuum clamp adopts a reliable positioning mode, the shape of the vacuum cavities is matched with the shape of the part, and the adsorption area can be farthest utilized.

Description

technical field [0001] The invention relates to a clamp and its use method, in particular to a vacuum clamp for processing a porous thin plate and its use method, and belongs to the technical field of thin handling equipment. Background technique [0002] In the existing mechanical processing industry, many workpieces belong to the thin plate category. Because the workpiece is thin, if the traditional fixture clamped on the side is used, the workpiece is easily deformed and cannot meet the processing accuracy; if the clamp clamped on the top surface is used, the upper surface Unable to process, only multi-process processing can be adopted, resulting in low efficiency. Furthermore, multiple times of clamping will make it impossible to guarantee the accuracy of each machining level of the workpiece, which is not conducive to popularization. In order to solve the problems existing in the above-mentioned conventional fixtures, a vacuum fixture that utilizes vacuum suction force...

AI Technical Summary

Problems solved by technology

This kind of vacuum fixture adopts unitized vacuum chucks. However, the shapes and structures of the workpieces in the metal machining industry are different. The general-purpose unitized vacuum chucks cannot match the shape and structure of the workpieces, and cannot achieve accurate positioning. Guarantee the processing accuracy of thin plate workpieces

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