摘要
对某数控外圆复合磨床的磨削精度进行了分析,根据该磨床结构特点加入了针对转塔式多主轴砂轮架的分析,在建立精密磨削加工方程时,考虑了该转塔在竖直方向的不垂直度误差.首先基于多体系统理论建立复合磨床的拓扑结构,分别建立砂轮磨削点在砂轮坐标系和工件坐标系的位置矩阵,确定磨床各部件的坐标系,得到各个变换矩阵,将各矩阵带入到沿工件分支和刀具分支描述到惯性坐标系的方程中,根据两分支方程相等,得到磨削精度模型.并利用MATLAB求出该方程,为后续误差补偿提供了条件.
In this paper,the grinding accuracy of a CNC external circular compound grinding machine was analyzed.According to the structure characteristics of the grinding machine,the analysis of turret type multi-spindle grinding wheel frame was added.In the establishment of the precision grinding equation,the non-verticality error of the turret in the vertical direction was considered.Firstly,based on the multi-body system theory,the topological structure of the compound grinding machine is established,the position equation of grinding point of the grinding wheel in the grinding wheel coordinate system and the workpiece coordinate system is established,the coordinate system of each part of the grinding machine is determined,the transformation matrix is obtained,and the precision grinding equation is obtained according to the equality of the two branch equations.The equation is solved by MATLAB,which provides conditions for the subsequent error compensation.
作者
范晋伟
刘强
李伟华
潘日
FAN Jinwei;LIU Qiang;LI Weihua;PAN Ri(School of Mechanical Engineering and Applied Electronics,Beijing University of Technology,Beijing 100124,CHN;Beier Machine Tool Works Co.,Ltd.,Beijing 100124,CHN)
出处
《制造技术与机床》
北大核心
2020年第9期40-44,共5页
Manufacturing Technology & Machine Tool
基金
国家科技重大专项(2019ZX04006-001)。
关键词
多体理论
磨削精度
约束方程
转塔
multi-body theory
grinding accuracy
constraint equations
turret
