A stable gap device for long-distance polishing

Abstract

The invention discloses a long-range polishing stable-clearance device, which belongs to the technical field of optical cold machining. The device comprises a control valve, a flow sensor, a pressure sensor, a rotary connector, a main shaft, a piezoceramic stack, a frame, a liquid-spraying grinding head and a controller. Adverse influence on a polishing process because of low precision of a machine tool, clamping and a workpiece surface is avoided by keeping distance between the liquid-spraying grinding head and the workpiece surface in the device; the polishing process is more stable; and the polishing quality is improved. At the same time, under the condition of not changing a process, the requirement on the precision of the machine tool and clamping is reduced.

Description

technical field [0001] The invention belongs to the technical field of optical cold processing, and relates to a long-distance polishing stable gap device. Background technique [0002] In the field of optical cold processing technology, the optical lenses that make up various optical systems must be produced by rough grinding, fine grinding, fine grinding, polishing and other processes according to the requirements of their optical design. The polishing process is generally completed by using various grinding heads . Because it is difficult to control the distribution of polishing paste under the ordinary solid grinding head, the uniformity of the polishing process is affected. A hollow liquid-jet grinding head with holes at the bottom solves this problem better. [0003] However, the distance between the non-contact liquid jet grinding head and the surface of the workpiece is very small. Usually, the distance between the grinding head and the surface of the workpiece is a...

AI Technical Summary

Problems solved by technology

Because it is difficult to control the distribution of polishing paste under the ordinary solid grinding head, the uniformity of the polishing process is affected. A hollow liquid-jet grinding head with holes at the bottom solves this problem better

[0003] However, the distance between the non-contact liquid jet grinding head and the workpiece surface is very small. Usually, the distance between the grinding head and the workpiece surface is about 10 μm, and the change of the distance has a great influence on the polishing quality and polishing efficiency.

When polishing a relatively large workpiece, the distance between the grinding head and the surface of the workpiece changes greatly due to the errors of the machine tool, clamping and the surface of the workpiece itself, which affects the polishing quality

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