High-quality hemispherical resonance elastic clamp holder and use method thereof

Abstract

The invention relates to the technical field of fused quartz glass ultra-precision machining, in particular to a high-quality hemispherical resonance elastic clamping device and a using method thereof.The clamping device comprises an elastic nut, an elastic chuck, an elastic clamping seat, an elastic chuck and an elastic clamping seat, the elastic chuck is placed in the elastic nut, and the elastic chuck is locked; the outer surface of the elastic nut is sleeved with an elastic base, and the elastic base is installed in the three-jaw disc. The elastic chuck is of a through hole structure, one end of a through hole is divided into a plurality of elastic blades, each blade is provided with a protrusion, the inner side of each protrusion and the corresponding blade are in a step shape, the outer side of each protrusion forms a frustum, and the included angle between the inclination of each frustum and the central axis of the elastic chuck is 20 degrees. Threads are arranged on the inner side of the other end of the through hole. By means of the method, better machining surface quality and longer cutter service life can be obtained.

Description

technical field [0001] The invention relates to the technical field of ultra-precision processing of fused silica glass, in particular to a high-quality hemispherical resonator elastic holder and a method for using the same. Background technique [0002] As countries around the world continue to invest in advanced weapons and equipment systems, future warfare will continue to develop in the direction of high automation, high confrontation, strong mobility, and diversification, so as to achieve precise strikes on combat targets. Therefore, future wars will put forward higher demands on weapon systems, and also put forward higher requirements on the inertial navigation systems of these weapon systems. With the development trend of miniaturization and high precision, navigation and guidance weapons put forward an urgent demand for small high-precision inertial sensors, especially gyroscopes. However, the existing gyroscopes are large in size, high in price, and low in precision...

AI Technical Summary

Problems solved by technology

As the core sensitive part of the hemispherical resonant gyroscope, the processing surface quality, size and shape accuracy of the hemispherical resonator will change the vibration characteristics of the resonator parts, the assembly accuracy of the excitation cover and the base, and the detection accuracy of the mode shape precession , affecting the performance and working life of the hemispherical resonant gyroscope

[0004] Since the hemispherical resonator part is a special-shaped structural part with a central support rod and a small curvature radius transition arc surface, the wall thickness of the spherical shell is relatively thin, and fused quartz is a typical hard, brittle and difficult-to-machine material. The forming and surface quality processing of the resonator part It is extremely difficult. At present, the main problems in the processing process are low processing accuracy, easy cracking of spherical shell processing and uneven wall thickness distribution, poor processing surface quality and low processing efficiency.

[0005] At present, the surface roughness of the hemispherical resonator parts processed by ultra-precision machining in foreign countries can reach Ra≤0.005um, and the processing surface shape accuracy is better than 0.1um; The accuracy only reaches the sub-micron level, and there is still a big gap with foreign countries. The processing accuracy and surface quality are difficult to meet the performance requirements of the gyroscope, which has become a bottleneck restricting the development of hemispherical resonant gyroscopes in my country to higher precision and longer working life. technical challenge

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