Protective tool for end tooth blasting prohibited area and shot blasting method thereof

Abstract

Belonging to part surface treatment technologies, the invention relates to a protective tool for an end tooth blasting prohibited area and a shot blasting method thereof. The protective tool for an end tooth blasting prohibited area adopts a polytetrafluoroethylene or aluminum alloy material, is in a circular ring shape, and the inner diameter of the circular ring is consistent with the that of protected end teeth. During shot blasting, the protective tool is placed on the protected end teeth to ensure that the end teeth on the inner side of a lower end face circular ring and the protected endteeth are engaged with each other, a part is placed horizontally into a shot blasting room, the protective tool faces upward, and a spray gun aligns to a shot blasting area for shot blasting. The protective tool provided by the invention can solve the problem of low protection precision at end teeth or other complex blasting prohibited areas and improve the qualification rate of shot blasting processing. Fourthly, the protective tool has the advantages of convenient installation and disassembly, full use and the like, also can significantly shorten the processing cycle, reduce the process cost and meet the needs of large-scale production.

Description

technical field [0001] The invention belongs to the surface treatment technology of parts, and relates to a protection tool for a spray-free area of ​​an end tooth and a shot blasting method thereof. Background technique [0002] Shot peening technology is a surface strengthening technology widely used in aero-engines and aircraft at home and abroad. It is mainly used in the manufacture of key load-bearing metal components in aviation, which can improve the fatigue life of components. In recent years, in order to ensure good reliability and long life of metal components, design institutes have increasingly adopted integral manufacturing and forming technologies. Therefore, the shape of metal components has become more and more complex, and the difficulty of shot peening has become more and more difficult. [0003] In order to ensure the installation accuracy, the end teeth and other parts of the metal components should not be shot blasted, so they become spray-free areas and...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: to propose a protective tooling for the spray-free area of ​​the end teeth and its shot peening method, which can solve the problem of low protection precision of the complex spray-free areas such as the end teeth, improve the pass rate of shot peening processing, and improve the spray-free area. The reliability of protection meets the processing requirements under the conditions of large shot peening intensity and large-size projectile shot peening. In addition, it can significantly shorten the processing cycle, reduce process costs, and meet the needs of large-scale production.

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