摘要
介绍数控系统的相对坐标系和绝对坐标系,提出数控系统的执行系统和刀具监视点,为数控车床实现刀尖圆弧半径补偿进行理论铺垫。通过图示说明在没有刀尖圆弧半径补偿时,加工锥面、圆弧面、曲面时会存在偏差。对此,提出两种数控车床刀尖圆弧半径补偿方法,分别为直接补偿法和轮廓轨迹偏移补偿法。对比两种补偿方法,并给出轮廓轨迹偏移补偿法在数控系统中的实现过程。
The relative coordinate system and absolute coordinate system of CNC system were introduced,and the execution system and tool monitoring point of CNC system were put forward,which lays a theoretical foundation for realizing the tool tip radius compensation of CNC lathe.It is graphically demonstrated that the deviation emerges at machining conical surface,circular arc surface and curved surface without the assistance of tool tip radius compensation.Herein,two methods of tool tip radius compensation of CNC lathe were proposed,namely direct compensation method and contour trajectory offset compensation method.The two compensation methods were compared,and the realization process of contour trajectory offset compensation method in CNC system was given.
出处
《机械制造》
2024年第3期83-86,97,共5页
Machinery
关键词
数控车床
刀尖
圆弧半径
补偿
原理
应用
CNC Lathe
Tool Tip
Arc Radius
Compensation
Principle
Application
