Control Method of Machining Deformation of Bushing Thin-walled Parts

Abstract

The invention provides a machining deformation control method of a bushing thin-wall part, and aims to provide a deformation control method for effectively controlling the machining deformation of an aluminum alloy thin-wall part, enabling the deformation in a controllable range and having stable and reliable quality. The method is realized through the following technical scheme: the stress finite element analysis and the stress strain state tendency analysis are performed by a finite element analysis model file and a simulation module; the meshing is performed by a partitioning second-order 20-node hexahedral unit to find out specific deformation areas and deflections; a smallest deformation scheme is selected to formulate a process machining scheme; and the heat treatment destressing is added after the semi-finishing for removing the machining stress deformation generated in the semi-finishing, and then, the finishing is performed for controlling the roundness of an outer circle and an inner hole within 0.02 mm. The inner hole and the outer circle are finished by the numerical control turning, so that the wall thickness difference is not bigger than 0.01; and a clamping part is cut off, and an end surface is machined, so that the total length is guaranteed. The method solves the machining difficulties of the bushing thin-wall part; and the pass percent can be improved above 90%.

Description

technical field [0001] The invention relates to a method for controlling the deformation of bushing thin-walled parts, in particular to a method for controlling the processing deformation of high-precision aluminum alloy thin-walled parts. Background technique [0002] With the development of the aviation industry, high-strength aluminum alloy thin-walled parts have been widely used. But this kind of bushing thin-walled parts is easily deformed under the force in the process of processing, and the processed bushing thin-walled parts are not easy to meet the quality index requirements. In the cutting process of aluminum alloy thin-walled parts, how to eliminate and reduce, and effectively control the processing deformation of such thin-walled bushing parts is a subject of much concern in the aerospace manufacturing process. Existing processing technology cannot fundamentally solve this problem. class questions. Thin-walled bushing parts are a common type of thin-walled bush...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of large processing deformation of bushing thin-walled parts in the state of the art, and the deformation is extremely difficult to control, and to provide a method to effectively control the processing deformation of aluminum alloy thin-walled parts before hard anodization, so that Its deformation is within the controllable range, and it has a stable and reliable deformation control method

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