Journal of Jilin University(Engineering and Technology Edition) ›› 2023, Vol. 53 ›› Issue (9): 2493-2498.doi: 10.13229/j.cnki.jdxbgxb.20220472

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Post⁃processing algorithm of five⁃axis CNC machine tool under rotation angle optimization

An-jiang CAI(),Chen-yang LIU,Pei-peng WANG   

  1. School of Mechanical and Electrical Engineering，Xi'an University of Architecture and Technology，Xi'an 710055，China
  • Received:2022-04-24 Online:2023-09-01 Published:2023-10-09

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Abstract:

During the operation of 5-axis CNC machine tools， the angle deviation of the rotation axis greatly affects the tool path control. Therefore， a post-processing algorithm of five-axis CNC machine tool with optimized rotation angle was proposed. Firstly， the basic structure of the machine tool was analyzed， the Hausdoff distance was used to obtain the matching error between the actual machined surface and the difference surface， and the error compensation method was used to compensate the obtained error， and the rotation axis angle of the machine tool was completed according to the processing result. Based on the optimization results， the machine tool coordinate system was established， and the machine tool post-processor was developed through the coordinate transformation results and integrated into the relevant software to realize the post-processing of the machine tool. The experimental results show that the proposed method achieves better processing results when used for post processing of machine tools.

Key words: Hausdoff distance, AC double turntable five-axis computer numerical control（CNC） machine, post-processing, rotation angle optimization

CLC Number: 

  • TP391

Fig.1

Basic structure of AC double-turn five-axis CNC machine tool"

Fig.2

AC double-turn five-axis CNC machine tool"

Table 1

Detection results of the tool nose error of the rotating axis of the machine tool"

旋转轴位置/（°）刀尖y向误差/mm刀尖z向误差/mm
850.330.451
450.200.095
0-0.010.003
-45-0.310.031
-85-0.400.245

Fig.3

Distribution diagram of original moving tool tip of five-axis CNC machine tool"

Fig.4

Tool nose error compensation results of different methods"

Fig.5

Spatial distribution of tool nose point error before and after tool nose motion error compensation"

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