Ultra-precision grinding device and method for hemispherical resonator

By using a specific grinding wheel combination and diamond abrasives on the grinding machine, the problems of difficulty and low precision in machining quartz hemispherical resonators were solved, achieving ultra-precision machining effects with high efficiency and low damage.

CN115741389BActive Publication Date: 2025-09-26CHINA STATE SHIPBUILDING CORP NO 707 RES INST
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Patent Information

Application Number
CN202211457870.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-21
Publication Date
2025-09-26
Estimated Expiration
2042-11-21

AI Technical Summary

Technical Problem

Quartz hemispherical resonators are prone to edge chipping, cracking, and fragmentation during mechanical processing. They are difficult to process, have a high scrap rate, and are difficult to meet high precision requirements.

Method used

A three-axis vertical or horizontal grinding machine is used, combined with an external convex grinding wheel, an internal concave cylindrical grinding wheel, an external concave grinding wheel and a cut-off grinding wheel, and diamond abrasives of different grit sizes are used for grinding, including rough grinding, semi-finishing grinding and fine grinding of various parts, with appropriate speed and feed rate.

Benefits of technology

The efficient ultra-precision machining of the quartz hemispherical resonator is achieved, with low surface roughness of the inner and outer spherical surfaces, smooth and defect-free surfaces, and high coaxiality and surface accuracy of the inner and outer cylinders, which significantly improves the machining efficiency and quality.

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Abstract

The present invention relates to an ultra-precision grinding device and method for a hemispherical resonator. The device utilizes a three-axis vertical or horizontal grinding machine and includes three types of grinding wheels for forming and a cutting grinding wheel for cutting. The three types of grinding wheels for forming include an externally convex grinding wheel for processing the inner sphere and lip of a workpiece, an internally concave cylindrical grinding wheel for processing the inner cylinder and inner fillet of the workpiece, and an externally concave grinding wheel for processing the outer sphere, outer fillet, and outer cylinder of the workpiece. The externally convex grinding wheels include an externally convex rough grinding wheel, an externally convex semi-finishing grinding wheel, and an externally convex fine grinding wheel; the internally concave cylindrical grinding wheels include an internally concave cylindrical rough grinding wheel, an internally concave cylindrical semi-finishing grinding wheel, and an internally concave cylindrical fine grinding wheel; and the externally concave grinding wheels include an externally concave rough grinding wheel, an externally concave semi-finishing grinding wheel, and an externally concave fine grinding wheel. The present invention can complete the grinding of all key parts of a quartz hemispherical resonator in one clamping operation, significantly improving processing efficiency and quality.
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