Precision grinding and polishing method based on gyroscope cavity of passive laser gyroscope

Abstract

The invention provides a precision grinding and polishing method based on a gyroscope cavity of a passive laser gyroscope. According to the precision grinding and polishing method, on one hand, the process steps of measuring, grinding, finishing, polishing and repeated measuring are combined, on the other hand, in order to solve the problems of clamping and polishing caused by the ultrahigh vertical surface of the cavity, in the process steps, the cavity can be properly inclined so as to be easier to grind and polish, finally, it is guaranteed that the linear dimension and the angular dimension of the cavity can be qualified at the same time, the included angle between adjacent patch surfaces, the perpendicularity angle error between the patch surfaces and the reference surface and the linear dimension are considered to reach the design indexes together, the problems that grinding is excessive, and the size and the angle are out of tolerance in a common method can be solved, it is guaranteed that the surface defect grade and the surface shape precision of the patch surfaces can reach the standard, and the popularization value of patch surface machining of the large-size gyroscope cavity is achieved.

Description

technical field [0001] The present application specifically discloses a precision grinding and polishing method based on a passive laser gyroscope gyroscope cavity. Background technique [0002] The laser gyroscope is used as an angle-sensitive element in the laser strapdown guidance system. It is an angular velocity sensor that uses the Sagnac effect in optics. It has fast start-up speed, short response time, large measurement range, and wide dynamic range. Good shock and vibration resistance, strong environmental adaptability, error has nothing to do with g, digital output and many other advantages. [0003] The gyro cavity is a key part of the laser gyroscope, and the accuracy of its patch surface is one of the key indicators of this key part. The existing grinding and polishing manufacturing technology of the active laser gyro cavity patch surface is basically mature and there are different processing methods for different manufacturers. At present, there are no report...

AI Technical Summary

Problems solved by technology

At present, there are no reports on the processing and use of laser gyroscope cavity surface with an external size of 360mm×360mm×50mm at home and abroad. In view of the many difficulties in the precision grinding and polishing of the large-scale and high-quality laser gyro cavity surface, it is urgent to provide a method that can solve the above problems. The method of precision grinding and polishing of the patch surface of the laser gyroscope cavity

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