Research on Geometric Precision Compensation of NC Machining Tools Based on Modified 9-line method

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Gong, Ling-Yun^1

Electron-mechancial Department, Guangzhou Railway Polytechnic, Guangzhou

510430, China^1

关键词: Co-ordinate system;    Compensation modeling;    Computer simulation research;    Empirical analysis;    Geometric precision;    Laser measurements;    Precision control;    Tool manufacturing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/5/052025/pdf
DOI  :  10.1088/1757-899X/490/5/052025

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In the process of precision compensation of NC machine tools, the traditional 9-line method has such principle error as error compensation of the rolling angle, because of difference from the coordinate system of the laser measurement and machine tool manufacturing. Secondly, the method has a poor robustness because the measurement noise and the repeatability of the machine tool are included in the measurement. Thirdly, the compensation model can only be used for the error compensation, and cannot be used for the precision design and the precision control and process optimization in the process of the machine tool assembly. In the paper 9-line method is modified based on error compensation model reconstructed, computer simulation research and empirical analysis. Compared with the experimental results, it is proved that the new method can correct three points of the traditional nine line method, and improve the accuracy of the roll angle error.