Processing method of high-precision thin-walled copper parts

Abstract

The invention discloses a processing method of high-precision thin-walled copper parts. The copper parts are installed on a special processing positioning tool and installed on a deep hole drilling and boring machine - a boring head is installed and a wooden key is installed on the boring head, and then semi-finish boring The hole-boring head is retracted, the sharp knife is disassembled, and the boring head is returned to the boring head after the light knife row is finished. The special processing and positioning tooling has good clamping performance, and at the same time provides sufficient clamping force to ensure that there will be no displacement between the workpiece and the tooling. The processing method is convenient and reliable, can effectively reduce the deformation caused by clamping, metal cutting heat and cutting internal stress in the process of processing the inner hole of thin-walled copper parts, and eliminate processing errors at the same time, and has high processing efficiency and stable quality; the processing method of the present invention It can process the inner hole of thin-walled copper parts with a length of more than 3m and an inner hole diameter of more than φ600, and copper parts whose inner hole cylindricity can reach 0.05mm.

Description

technical field [0001] The invention belongs to the technical field of processing inner holes of copper pieces, in particular to a processing method for high-precision thin-walled copper pieces. Background technique [0002] In marine shafting, thin-walled copper parts are very common. They are hot-fitted to bearing positions such as propeller shafts and stern shafts. Therefore, the dimensional tolerances and geometrical tolerances of inner holes are required to be high. Generally, the following methods are used for processing: 1. Using a lathe to process the inner hole, 2. On a CNC boring and milling machine, the requirements are met by boring. [0003] The above two methods are suitable for shorter holes. With the development of our shipbuilding industry, the diameter and length of thin-walled copper parts are getting larger and larger. Lathes and boring and milling machines are limited by the length of turning tool bars and boring bars, which cannot be processed. . We c...

AI Technical Summary

Problems solved by technology

Difficulties in processing thin-walled copper parts: (1) The wall of copper parts is thin, and it is easy to deform when clamping; (2) Copper parts are easily heated when heated, resulting in thermal deformation

The above two deformations lead to the cylindricity of the inner hole of the thin-walled copper parts cannot be guaranteed. With the increase of the length of the copper part, the diameter of the inner hole increases, and the processing difficulty will increase exponentially.

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