Probe-shaped electrorheological polishing tool

Abstract

The invention relates to an electrorheological effect-based probe-type electrorheological fluid-assisted polishing tool. A motor drives a center shaft to rotate through a coupler; the center shaft passes through a central through of a taper sleeve and vertically forms a probe type convex end downward; and the taper sleeve is positioned by three wiring terminals arranged in a equilateral triangle shape through three supporting rods to ensure the coaxiality with the center shaft. The center shaft is earthed to serve as a cathode, the taper sleeve is connected with a power supply anode through awiring terminal, the center shaft and the taper sleeve form a ring electrode, the electrode clearance is kept at 0.3 millimeter, and an insulating sleeve is arranged between the electrodes. In the processing process, an electric field of 2,000 to 5,000 V / mm is applied to electrorheological fluid; a loose abrasive material capable of polishing is carried by the electrorheological fluid to gather at the probe type convex end of the center shaft to form a ring chain structure under the special Winslow effect of electrorheological fluid, namely, an effect of obvious viscosity increase under the action of the electric field; and the loose abrasive material removes the surface material of workpieces through the relative motion of the workpieces. The tool is suitable for polishing minor-caliber optical special curved surfaces.

Description

Technical field [0001] The invention relates to a probe type polishing tool based on the electrorheological effect. It belongs to the field of optical surface processing tools. Background technique [0002] In modern optical systems, optical curved elements such as aspheric surfaces are used for aberration correction and image quality improvement, which can greatly simplify the design of optical systems and structures. Compared with large-caliber or even super-large-caliber aspheric elements (above 800 mm) used in large-scale space remote sensing or ground observation instruments, it can meet the requirements of miniaturization and high integration technologies such as optical digital communication equipment, modern lighting and imaging systems The high-quality and rapid optical processing of optically curved components (with a diameter of only 10 mm to 0.8 mm) demanded by the development of small-diameter to small-diameter optical surfaces is a type of advanced optical manufact...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a point-contact deterministic polishing tool integrating negative and positive electrodes, so as to solve the problems of difficult tool design, low safety, and difficult realization of controllable electrorheological effects in electrorheological polishing technology. To solve the problem, provide a special tool with compact structure, high integration, miniaturized working area, and deterministic polishing

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