A method for controlling residual stress and machining deformation of precision structural parts

Abstract

The invention discloses a method for controlling residual stress and processing deformation of a precision structural part, comprising the following steps: 1) machining a stress separation groove on the front of the precision structural part 8 to 10 mm away from the periphery, the width of the groove is 10 to 16 mm, and the depth of the groove is to Finished product size 0.5mm margin; 2) Repeat step 1) Process the stress separation groove on the back of the precision structural part; 3) Perform aging treatment on the precision structural part with stress separation grooves processed on both the front and back sides; 4) After aging treatment The precision structural parts are sent to the high-speed machining center for finishing machining. Compared with the prior art, the processing deformation of the precision structural parts of the present invention is controlled within 0.015mm, which reduces the number of thermal leveling and aging processes, shortens the production cycle by 25%, reduces the labor intensity of operators, and has good part quality consistency. Solved the bottleneck problem of photoelectric model equipped with precision structural parts quality, high efficiency and high reliability cutting processing.

Description

technical field [0001] The invention relates to the field of metal cutting processing of precision structural parts, in particular to a method for controlling residual stress and machining deformation of precision structural parts. Background technique [0002] With the development of optoelectronic weapons and equipment in the direction of light weight and intelligence, a large number of thin-walled structural parts are used. Most of these parts have the characteristics of complex structure, special shape, thin wall and high precision requirements, and are generally the key to the whole machine or component. items or important items. Such parts are easily deformed during the processing. Among the many factors that cause the parts to be unqualified, 40% to 60% are caused by the processing deformation of the parts. The machining deformation of high-precision structural parts has become a key factor affecting machining accuracy and machining quality in model equipment, the na...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of large processing deformation of precision structural parts, many processes, long production cycle and unstable process by simply adopting high-speed processing method, or adopting stress division groove, and not processing under high-speed processing state, and providing A Method for Controlling Residual Stress and Processing Deformation of Precision Structural Parts

Images