隐曲线的线性和旋转插补  

Linear and Angular Interpolations for Implicit Curves

作　　者：徐海银[1] 李丹[1] 李端铃[2] 何顶新[1] 

机构地区：[1]华中科技大学,武汉430074 [2]北京邮电大学,北京100876

出　　处：《中国机械工程》2005年第21期1886-1888,1903,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50305007);北京市自然科学基金资助项目(3053017);湖北省杰出青年基金资助项目

摘　　要：基于数控五轴刀具运动分析,提出了旋转插补的概念,给出了旋转插补的相关定义,在此基础上提出了隐曲线的线性和旋转插补原理和方法,并进一步提出了改进的插补方法。This paper presented an approach for linear and angular feedrate interpolations for implicitly represented paths for multi-axis CNC machining. Tool path was identified by a position curve assumed to be an implicit curve and a tool orientation curve based on the position curve. The angular feedrate interpolations calculated the tool positions and orientations at each sampling cycle based on specified angular feedrates for given tool paths. The paper will relate analytically geometric properties of such prescribed path to rigid body motions along the path by feedrates and feed acceleration. The results are then used to develop the linear and angular feedrate interpolation. An improved interpolation scheme is further present to augment initial interpolation.

关 键 词：CNC 插补 旋转进给 隐曲线 方向 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]