Real-time CNC tool path generation for machining IGES surfaces

被引：44

作者：

Chen, Y.D. ^{[1
]}

Ni, J. ^{[1
]}

Wu, S.M. ^{[1
]}

机构：

[1] Univ of Michigan, Ann Arbor, United States

来源：

Journal of engineering for industry | 1993年 / 115卷 / 04期

关键词：

Algorithms - CAD - Computer aided design - Computer programming - Control equipment - Motion control - Numerical control systems;

D O I：

10.1115/1.2901793

中图分类号：

学科分类号：

摘要：

A real-time CNC tool path generation algorithm has been developed for machining IGES surfaces. IGES-based CAD data files can be directly inputted to the CNC system and the tool paths generated in real time can be passed to a motion controller during cutting via a Multibus II backplane structure. The development of such a real-time tool path generation method has eliminated the need for a tradeoff between the desired surface accuracy and the required memory size for storing off-line generated NC codes. The real-time NC path generation algorithm can properly deal with issues such as trimming lines, gouging detection, and adaptive tool step adjustment. The developed algorithm has been implemented on a multi-processor CNC system and verified through actual cutting tests. The test results show that no violating conditions occurred on machined part surfaces, and the surface contour error of the cut part is less than the give tolerance, which was 0.02 mm in this particular test.

引用

页码：480 / 486