A Machining Method for Offset Milling of Conical Outer Surface of Case

Abstract

The invention relates to a processing method for offset milling of the cone-shaped outer surface of the casing. The following steps are as follows: using UG software to prepare the milling operation of the cone-shaped outer surface of the casing; planning the milling sequence and cutting tools for the cone-shaped outer surface of the casing track; customize the special post-processing program of UG software; use the special post-processing program to create the G code program recognized by the machine tool; plan the milling sequence and tool trajectory of the outer surface of the cone of the casing as follows: the outer surface of the cone of the casing is divided into Several surface areas, each surface area is used as a separate driving body, and each surface area is represented by (U, V) parameters; the feed point is selected in the middle of a single surface area, and the angle θ between the feed direction and the cutting direction is greater than 90 °, less than 270. The invention improves the cutting angle of the tool, increases the cutting range of the side edge, and reduces the cutting of the bottom edge, thereby reducing the wear of the tool, improving the processing efficiency, and successfully solving the problem of numerical control milling on the cone-shaped outer surface of the casing.

Description

technical field [0001] The invention relates to the processing technology in the field of mechanical manufacturing, in particular to a processing method for offset milling of the cone-shaped outer surface of the casing. Background technique [0002] The structural features of the tapered outer surface account for a large proportion in the processing of aero-engine casing parts. For example, parts such as the front casing, rear casing, and integral annular casing of the compressor have a tapered outer surface structure. Traditional processing The method uses the center line of the tool to be perpendicular to the outer surface of the cone, and then uses the rotating part to process or the tool to rotate around the center line of the part. During the processing of this method, the processing tool uses the bottom edge and the side edge to contact the part at the same time, resulting in serious tool wear and cutting. The parameters are not high and the processing efficiency is lo...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of CNC milling such as low milling efficiency and severe tool wear in the existing technology, the technical problem to be solved by the present invention is to provide a tool that can improve the performance of the tool and reasonably plan the path of the tool path. , so as to improve the processing efficiency of the casing cone outer surface offset milling processing method

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