Diamond grinding wheel offline electrolytic dressing device for optical element grinding and dressing method thereof

Abstract

The invention provides a diamond grinding wheel offline electrolytic dressing device for low-cost aspheric-surface optical element grinding. The diamond grinding wheel offline electrolytic dressing device for the optical element grinding comprises a main shaft, an electrolytic tank provided with a dressing head, a dressing-distance fine-adjustment system and a controller; a diamond grinding wheel is installed on the main shaft, and the main shaft rotates under the control of the controller to drive the diamond grinding wheel to conduct rotational movement; the dressing-distance fine-adjustment system supports the electrolytic tank and conducts precise fine-adjustment on the height of the electrolytic tank, so that the distance between the dressing head in the electrolytic tank and the surface of the diamond grinding wheel is adjusted. According to the diamond grinding wheel offline electrolytic dressing device for the optical element grinding, the dressing efficiency is high, and the protruding performance of grinding particles on the surface of the grinding wheel is good; rapid dressing and precise dressing of the grinding wheel can be achieved by adjusting the rotating speed of the grinding wheel, an electrolytic voltage or current and the distance between the dressing head and the surface of the grinding wheel, it is guaranteed that the grinding particles have good protruding performance, and it is also guaranteed that a bonding agent has strong maneuverability over the grinding particles.

Description

technical field [0001] The invention relates to the field of ultra-precision machining of optical elements, in particular to an off-line electrolytic dressing device and a dressing method for diamond grinding wheels in the forming grinding process of large-diameter aspheric optical elements. Background technique [0002] With the continuous development of laser technology, large-aperture high-power laser drivers, as an important branch of laser technology, have important applications in inertial confinement nuclear fusion, such as the NIF device in the United States. As the largest optical project in the world, the requirements of high-power laser drivers are much higher than those of any optical system so far in terms of the quantity and quality of large-aperture optical components. The ultra-precision machining of optical components is an important means to obtain high-volume, high-performance optical components. [0003] Grinding is an important forming process for the u...

AI Technical Summary

Problems solved by technology

Therefore, the use of ultra-precision grinding machine tools to achieve in-situ dressing of diamond grinding wheels will increase the manufacturing cost of components, prolong the processing hours, and reduce the overall production efficiency

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