摘要
以双摆头五轴数控加工中心结构为例,包括两个旋转轴A/C和X、Y、Z三个直线轴。分别研究刀具在平动与转动中刀位点的变换关系,建立刀位点换算关系式;根据该机床结构搭建相应的运动学方程,从机床的动态角度出发,分析五轴联动过程中刀位点及刀轴矢量的运动变化规律,运用工程数学计算方法建立A/C轴旋转角度与X/Y/Z轴向坐标数据补偿关系式,实现C-A(X)型双摆头型五轴联动机床的运动求解,为后续的后置处理器的构造作理论基础。
This paper takes the double pendulum head five-axis CNC machining center structure as an example, including two rotary axesA/Cand three linear axesX,Y, andZ. The transformation relationship between tool position points during tool translation and rotation is studied, and the conversion formula of tool position points is established. According to the structure of the machine tool, corresponding kinematic equations are established. From the perspective of the machine tool’s dynamics, the movement and change law of the tool position point and the tool axis vector during the five-axis linkage process are analyzed. The engineering mathematical calculation method is used to establish the formula for the compensation relationship between theA/Caxis rotation angle and theX/Y/Zaxial coordinate data, which realizes the motion solution of theC-A(X)-type double pendulum head five-axis linkage machine tool. This method provides a theoretical basis for the subsequent post-processor construction.
作者
王馨
李宪辉
WANG Xin;LI Xianhui(Shanxi Institute of Mechanical and Electrical Engineering,Changzhi 046011,China;Harbin Xinrun Industrial Co.,Ltd.,Harbin 150300,China)
出处
《机械工程师》
2020年第2期68-70,73,共4页
Mechanical Engineer
关键词
数控技术
后置处理
运动求解
坐标变换
NC technology
post-processing
motion solution
coordinate transformation
