Interference-Free Cutter Location Data Computation for Flat-Endmill in 4-Axis NC Machining
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摘要: 针对四坐标端刀加工,提出一种新的干涉检测和排除方法.该方法基于曲面的多面体模型,用解析法判断刀具与曲面是否干涉,并给出排除干涉的计算公式.最后给出四轴端刀无干涉刀位点计算的算法,实例表明该方法稳定高效.Abstract: An analytical method based on discrete model was presented to detect and avoid interference for flat-endmill in 4-axis NC machining. Based on the analyses conducted, an algorithm of interference-free cutter location data computation for flat-endmill in 4-axis NC machining was developed. Calculation examples showed that the algorithm could handle the interference problem in 4-axis NC machining with improved computation efficiency and stability.
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Key words:
- curved surface /
- processing /
- interference /
- 4-axis machining /
- cutter location computing
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[1] Suh S H. Avoiding tool interference in four-axis NC machining of rotationally free surfaces[J]. IEEE Transactions on Robotics and Automation, 1992, 8(6):718~729. [2]吴丽萍,施法中,陈卫东. 回转类零件的四轴无干涉刀位轨迹生成[J]. 北京航空航天大学学报,2002,28(3):305~308. [3]李 明. 叶轮、叶片类零件几何设计和数控加工 . 北京:北京航空航天大学机械工程及自动化学院, 1990. [4]张定华. 雕塑曲面多轴加工的干涉处理[J]. 西北工业大学学报, 1993, 11(2):157~161. [5]陈卫东. 自动编程软件平台的研究与开发 . 北京:北京航空航天大学机械工程及自动化学院,1997.
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