Thin-wall annular part laser shot peening strengthening device and processing method

Abstract

The invention provides a thin-wall annular part laser shot peening strengthening device and a processing method. The thin-wall annular part laser shot peening strengthening device comprises a laser generating device, a light path transmission system, an automatic feeding and discharging mechanical arm, a station rotating disc, workpiece clamp systems and automatic adhesive tape pasting devices, wherein, the station rotating disc comprises at least two processing stations and a feeding and discharging station; the automatic feeding and discharging mechanical arm is used for grabbing the thin-wall annular parts at the feeding and discharging station; laser beams are emitted to the outer rings of the thin-wall annular parts at the processing station through the light path transmission system and are used for strengthening the thin-wall annular parts; each station of the station rotating disc is provided with the workpiece clamp system and the automatic adhesive tape pasting device; the workpiece clamp system is used for enabling the thin-wall annular parts to rotate after clamping the thin-wall annular parts; and the automatic adhesive tape pasting devices are used for forming restraint layer on the outer rings of the thin-wall annular parts. According to the thin-wall annular part laser shot peening strengthening device and the processing method, uniformly-distributed residual compressive stress is formed on the surface layer of the thin-wall annular parts, and the fatigue life of the thin-wall annular parts is prolonged.

Description

technical field [0001] The invention relates to the technical field of laser processing or the field of surface strengthening of thin plate parts, in particular to a laser shot peening strengthening device and processing method of thin-walled annular parts. Background technique [0002] Thin-walled ring parts have the advantages of light weight, high thrust-to-weight ratio, and compact structure. They are widely used in the equipment manufacturing industry and directly determine the performance and reliability of major equipment. The working performance and service life of thin-walled annular parts mainly depend on the fatigue resistance of the working surface of thin-walled annular parts, and the key factors affecting the fatigue resistance of thin-walled annular parts are the residual stress and distribution state of the surface of thin-walled annular parts. Residual tensile stress will shorten the fatigue life of thin-walled ring parts, and residual compressive stress is ...

AI Technical Summary

Problems solved by technology

[0005]① Thin-walled annular parts will produce uneven plastic deformation after laser shot peening, which will lead to uneven distribution of stress state on the surface of thin-walled annular parts. Work will lead to stress concentration on the surface of the part. This uneven surface stress state is not conducive to improving the fatigue life of thin-walled ring parts

[0006]②The processing efficiency of thin-walled ring parts is low by laser shot peening, the degree of automation of processing equipment is not high, and the degree of flexibility is low

[0007] The prior art discloses a laser strengthening device for thin-walled annular parts. Error accumulation caused by uneven distribution of residual stress on the surface of the part, and the device is troublesome to clamp, and can only strengthen a single thin-walled ring part, which is not easy to meet the requirements of automatic production

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