Algorithm of Variable Forward Step Size Planning in Freeform Surface Machining
Multi-axis machine is widely used in freeform surface machining. The curve of tool path is discretized to line segments to get the cutter contact (CC) points according to chordal deviation error (CDE) on conventional method and mid-point point method is applied in the verification of maximum CDE. Shortcoming of the mid-point method is that it may lead to wrong forward step size when sign of the curvature of the two adjacent discretized points is opposite. A new algorithm for curve of tool path discretization is presented to improve the precision of the forward step size, so the forward step size is as large as possible and the CDE is uniform in every line segments. The results showed that the maximum CDE is not locate on the middle point of the two adjacent parameter points, this showed that the conventional simplified mid-point method is not as accurate as the new method.
Zhao Shitian Zhao Dongbiao Fu Yingying
College of Mechanical and Electrical, Nanjing University of Aeronautics and Astronautics, Nanjing, 2 Department of Mechanical and Electrical, Dezhou University, Dezhou, 253023 China
国际会议
2009 IEEE International Conference on Information and Automation(2009年 IEEE信息与自动化国际学术会议)
珠海、澳门
英文
618-622
2009-06-22（万方平台首次上网日期，不代表论文的发表时间）