Aspheric surface abrasive belt grinding and polishing tool based on hydraulic servos

Abstract

The invention relates to an aspheric surface abrasive belt grinding and polishing tool based on a hydraulic servos. The aspheric surface abrasive belt grinding tool comprises a hydraulic servo system and an abrasive belt tool system connected through a link mechanism, and the abrasive belt tool system comprises an abrasive belt driven by a tool motor, an upper foot support rod and a lower foot support rod, wherein the upper foot support rod and the lower foot support rod are connected through a third bearing. The hydraulic servo system comprises a hydraulic cylinder, the hydraulic cylinder is sequentially connected with a single-way throttle valve, a three-position four-way solenoid valve, an overflow valve, a hydraulic pump, a filter and an oil tank, and the hydraulic servo system adjusts a grinding and polishing pressure of the abrasive belt by controlling strokes of the link mechanism and stabilizes the grinding and polishing pressure through the overflow valve. The aspheric surface abrasive belt grinding and polishing tool solves the problem that the grinding and polishing pressure of the abrasive belt in a grinding and polishing process of aspheric surface optical elements is unstable, and simultaneously the aspheric surface abrasive belt grinding and polishing tool has the advantages of being capable of self adapting to workpiece curved surfaces, good in effects of discharging grinding and polishing sweeps, big in grinding ratio, high in grinding and polishing efficiency, simple in structure and low in manufacture cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing devices, in particular to an abrasive belt grinding and polishing tool for precision machining of aspheric optical parts, in particular to an aspheric abrasive belt grinding and polishing tool based on hydraulic servo. Background technique [0002] Abrasive belt grinding and polishing is a new grinding method with high efficiency, low cost and multi-purpose. Its adaptability and flexibility to the processing of various materials and shapes far exceed the conventional grinding wheel grinding process. When processing the workpiece surface, the difference between the abrasive belt and the grinding wheel is that the grinding wheel is in a state of tensile stress during grinding, and because of heat accumulation, it is easy to produce microscopic cracks and burns in the grinding of the workpiece surface; It has dual functions of grinding and polishing, it is in a state of compressive stre...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the existing technical defects, provide a hydraulic servo-based aspheric abrasive belt grinding and polishing tool in the process of precision machining of aspheric optical parts, and solve the problem of using abrasive belts in the grinding and polishing of aspheric optical parts. The problem of unstable pressure, at the same time, the invention also has the advantages of being able to adapt to the curved surface of the workpiece, having a good effect of excreting grinding and polishing waste, large grinding ratio, high grinding and polishing efficiency, simple structure and low manufacturing cost.

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