Machining method of guide sleeve type thin-wall part

Abstract

The invention discloses a machining method of a guide sleeve type thin-wall part. The machining method comprises the following steps that 1, allowance of the end face of an open end of the thin-wall part and allowance of an inner hole are removed; 2, the end surface allowance and the outer circle allowance of a reference surface end of the thin-wall part are removed; 3, carburizing treatment is performed on the reference surface end; 4, semi-finish turning is conducted on the end face of the open end and the inner hole of the thin-wall part; 5, semi-finish turning is conducted on the inner hole and an outer circle of the reference surface end and chamfers of the inner hole and the outer circle; 6, a circumferential hole is drilled in the outer circle of the thin-wall part; 7, reference surface end heat treatment is performed; 8, the end face of the open end is ground; 9, the end face of the reference surface end is ground; 10, fine turning is conducted on the inner hole and an outer circle notch of the open end; 11, a reference surface end positioning hole is finely ground; 12, a grinding tool is matched, and redundant grinding allowance of the outer circle is removed through turning; 13, the grinding tool is matched, and the outer circle is accurately ground to the final size; and 14, burrs are removed by a bench worker. According to the machining method, through reasonable process route arrangement and design of a special tool, the dimensional tolerance requirement of the outer circle and the bounce requirement of the outer circle relative to a reference surface are guaranteed under the condition that deformation is controlled.

Description

technical field [0001] The invention relates to the technical field of mechanical processing of turbocharger thin-walled parts, in particular to a processing method for guide bush-type thin-walled parts. Background technique [0002] Marine turbocharger, as a supporting part of diesel engine, is a turbocharger product independently developed by the company. As a part of this type of product, the guide sleeve plays an indispensable role. The material of the guide sleeve is 20CrMn, which has high requirements for the tolerance of the outer circle and the tolerance of the shape and position relative to the reference plane, and because the part is a thin-walled part, it is particularly important to control the deformation during processing. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a processing method for thin-walled guide sleeves. By designing a reasonable process route and designing sp...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a processing method for thin-walled guide sleeves. By designing a reasonable process route and designing special tooling, the tolerance requirements of the outer circle and its size can be guaranteed while controlling deformation. Runout Requirements Relative to Datum

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