Method on Compensation and Correction of CC Path Nonlinear Error for Five-axis Machining

被引：0
|
作者：
Chen L. [1 ]
Wang Z. [1 ]
Sui Y. [1 ]
Wei G. [1 ]
机构：
[1] School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2020年 / 51卷 / 01期
关键词：
Cutter contacting path; Five-axis machining; Linear interpolation; Nonlinear error;
D O I：
10.6041/j.issn.1000-1298.2020.01.045
中图分类号：
学科分类号：
摘要：
While five-axis machining for the freeform surface, deviation is easily produced between the cutter contacting (CC) points and the given linear CC path because of the two rotation coordinates participating in the linear interpolation process, and the nonlinear error of the CC path is simultaneously formed. In order to effectively reduce the error, a nonlinear error compensation and correction method based on the ideal CC path was proposed. By analyzing the mechanism of the nonlinear error of CC path caused by the cutter's attitude being changed, the machine tool kinematics transformation model and the model of the CC path nonlinear error were established respectively. The CC point was obtained firstly according to the current interpolation cutter center point. Secondly, the foot point coordinate and the spatial distance between the CC point and the CC path were calculated. The third step was to determine the compensation distance and direction of the nonlinear error respectively. After the position of the tool center point being real-time corrected, the servo control of the five feed axes would be carried out. The simulation results showed that the method can effectively reduce the nonlinear error of the CC path and had practical value for improving the control accuracy of the CC point trajectory during five-axis linear interpolation. © 2020, Chinese Society of Agricultural Machinery. All right reserved.
引用
收藏
页码：410 / 416
页数：6
相关论文
共 23 条
  • [1] Farouki R.T., Li S., Optimal tool orientation control for 5-axis CNC milling with ball-end cutters, Computer Aided Geometric Design, 30, 2, pp. 226-239, (2013)
  • [2] Jung H.C., Hwang J.D., Park K.B., Et al., Development of practical postprocessor for 5-axis machine tool with non-orthogonal rotary axes, Journal of Central South University of Technology, 18, 1, pp. 159-164, (2011)
  • [3] Wu D., Wang Y., Feng J., Et al., Analysis and control of the non-linear errors in five-axis NC machining, Journal of Shanghai Jiaotong University, 41, 10, pp. 1608-1612, (2007)
  • [4] Li Y.Q., Chen Y.X., Chen Q., Research on nonlinear error analysis and overproof processing method in five-axis NC machining with dual turntable, Applied Mechanics and Materials, 121-126, pp. 3662-3666, (2011)
  • [5] Guo S., Mei X., Jiang G., Et al., Correlation analysis of geometric error for CNC machine tool, Transactions of the Chinese Society for Agricultural Machinery, 47, 10, pp. 383-389, (2016)
  • [6] Zhou Y., Zhou J., Zhou Y., Et al., Analysis and contral of the theoretical error in five-axis NC machining, Chinese Journal of Mechanical Engineering, 35, 5, pp. 54-57, (1999)
  • [7] Tang Q., Li G., Liu Q., Et al., Research of RTCP algorithm for five-axis NC machine tool with table-rotating, Modular Machine Tool & Automatic Manufacturing Technique, 5, pp. 39-42, (2016)
  • [8] Zhang P., Zhou K., Li X., Optimization of machining trajectory error based on redundant linkage in six-axis linkage CNC machine tool, Transactions of the Chinese Society for Agricultural Machinery, 50, 2, pp. 411-419, (2019)
  • [9] Han X., Song X., Yin M., Et al., Solution of inverse kinematics and welding trajectory error analysis for 6R welding robot, Transactions of the Chinese Society for Agricultural Machinery, 48, 8, (2017)
  • [10] Zheng L., Lin H., Zhang X., Et al., Control of the non-linear errors in five-axis NC machining based on real-time interpolation, Journal of Chinese Computer Systems, 31, 7, pp. 1389-1392, (2010)
123