Machining process for deep hole thin-walled workpiece

Abstract

The invention relates to a machining process for a deep hole thin-walled workpiece. The machining process for the deep hole thin-walled workpiece comprises the steps that S1, primary appearance roughmachining is carried out, wherein a disc milling cutter is adopted to carry out primary rough machining on the appearance of a raw material, surface materials are removed, the milling cutter is used for removing residual materials at corners so that the external shape can be formed; S2, a deep hole is formed, wherein the two end portions of the raw material are drilled through a drill bit; S3, aging treatment is carried out, wherein the workpiece obtained in the step S2 is put into an oven to be subjected to high-temperature treatment, and internal stress is removed; S4, secondary appearance rough machining is carried out, wherein the milling cutter is used for carrying out secondary rough machining on the appearance of the workpiece obtained in the step S3; S5, appearance finish machiningis carried out, wherein the milling cutter is used for carrying out finish machining on the appearance of the workpiece obtained in the step S4; S6, the deep hole is machined, wherein a boring cutteris used for carrying out semi-finish machining and finish machining on the deep hole; and S7, the thin wall is machined. The problems that during machining of a large deep hole thin-walled workpiece,deformation and shaking cutter lines appear are solved, the machining efficiency and the workpiece quality are improved, and the defective percentage is reduced.

Description

technical field [0001] The invention relates to machining of deep-hole parts, in particular to a processing technology for deep-hole thin-walled parts. Background technique [0002] In the field of aviation, the engine is its core component. The aeroengine is a highly complex and sophisticated thermodynamic mechanism that provides the power required for the flight of the aircraft. As the heart of the aircraft, it directly affects the performance, reliability and economy of the aircraft. It is an important embodiment of a country's technological, industrial and national defense strength. The production and manufacture of the engine is related to the safety of the user's life, so the production of the engine needs to meet a very high standard. At present, in the structure of the engine, it is necessary to use large deep-hole thin-walled parts, and its processing is particularly difficult. The requirements are extremely high. Due to the thin wall thickness, internal stress wil...

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Problems solved by technology

The production and manufacture of the engine is related to the safety of the user's life, so the production of the engine needs to meet a very high standard. At present, in the structure of the engine, it is necessary to use large deep-hole thin-walled parts, and its processing is particularly difficult. The requirements are extremely high. Due to the thin wall thickness, internal stress will appear inside the workpiece during processing and deformation will easily occur, resulting in the scrapping of the workpiece; and due to the deep hole, it is easy to appear chattering and chattering marks during processing. The emergence of the new technology makes the circumference size change greatly, and the defective rate also increases greatly.

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