Cutting Method of Cylindrical Thin-Walled Casting Shell to Avoid Stress Concentration and Release

Abstract

The invention discloses a method for splitting and cutting a cylindrical thin-walled casting shell to avoid stress concentration release, and solves the problem of how to effectively avoid stress concentration release when the cylindrical thin-walled casting shell is split and cut after machining. problem. The present invention releases the stress formed by machining in stages through the vacuum tempering furnace, thereby ensuring that the shell of the cylindrical thin-walled shell casting will not be cracked due to the release of stress concentration when it is cut in half; the online cutting of the present invention At the time, the method of reciprocating cutting from the middle of the split line to both ends is adopted to avoid the concentrated release of stress to the greatest extent, especially the pre-splitting method of leaving two ends in the middle of the line cutting, and in the pre-splitting state, vacuum The treatment method of stress release in the tempering furnace greatly improves the yield of cylindrical thin-walled casing castings in resolution cutting.

Description

technical field [0001] The invention relates to a method for splitting and cutting a cylindrical thin-walled cast shell, in particular to a method for splitting and cutting a cylindrical thin-walled cast shell after machining which can effectively avoid stress concentration release. Background technique [0002] The machining process of the semi-cylindrical thin-walled shell in the prior art is generally as follows: firstly, the cylindrical thin-walled shell blank is obtained by casting, and then, the inner and outer cavities of the cylindrical thin-walled shell blank are turned and milled to make the inside and outside The mechanical performance indicators such as the smoothness of the cavity meet the design requirements. Finally, the machined cylindrical thin-walled shell is cut into two semi-cylindrical thin-walled shells with a wire cutting machine; due to the internal setting of the semi-cylindrical thin-walled shell There are structural parts such as support ribs, ribs...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a split cutting method for a cylindrical thin-walled cast shell that avoids stress concentration release, and solves the problem of how to effectively avoid stress concentration release when the cylindrical thin-wall cast shell is split and cut after machining. technical challenge