Deep hole type pressure adjustable electromagnetic chuck

Abstract

A deep hole type pressure adjustable electromagnetic chuck relates to a precise grinding apparatus and comprises an electromagnetic chuck and a fixture. The electromagnetic chuck is provided with electromagnetic chuck edge area holes, electromagnetic chuck central area holes, first exhaust holes and second exhaust holes. The electromagnetic chuck edge area holes are uniformly and symmetrically distributed at edges of the electromagnetic chuck and connected with the second exhaust holes at bottoms thereof. The electromagnetic chuck has four sides, and each side is corresponding to a row of holes communicated with the second exhaust holes at bottom of the electromagnetic chuck and connected to an air pump by the second exhaust holes. The second exhaust holes are correspondingly uniformly and symmetrically distributed at internal part of the electromagnetic chuck. The electromagnetic chuck central area holes are uniformly and symmetrically distributed at central part of the electromagnetic chuck and provided with communication areas at bottoms thereof. The communication areas are communicated with the first exhaust holes and connected to the air pump.

Description

technical field [0001] The invention relates to a precision grinding processing equipment, in particular to a grinding machine accessory for grinding glass with a grinding wheel—a deep-hole pressure-adjustable electromagnetic sucker. Background technique [0002] As an important material, glass is more and more widely used in many equipment components, and consequently, the processing of glass components is becoming more and more important. At present, in the field of glass grinding and processing, an electromagnetic workbench is usually used to attract the fixture, clamp the glass to be processed with the fixture, fix the tight position, and then start processing a surface of the glass. However, when using this traditional processing method to process large-sized and thin glass optical devices, such as glass ceramics, since the middle area of ​​the glass is fully in contact with the electromagnetic chuck, but the edge area is not, the force is uneven, that is, The center i...

AI Technical Summary

Problems solved by technology

However, when using this traditional processing method to process large-sized and thin glass optical devices, such as glass ceramics, since the middle area of ​​the glass is fully in contact with the electromagnetic chuck, but the edge area is not, the force is uneven, that is, The center is under greater pressure, while the edge is under less pressure, so it is easy to cause the deformation of the edge to warp

Due to the deformation of the edge, the workpiece is easily pressed down by the grinding wheel during grinding, resulting in insufficient grinding, which seriously affects the surface shape and machining accuracy of the workpiece.

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