CNC多轴联动的机床交叉耦合轮廓误差补偿技术  

Research on Cross-coupled Contour Error Compensation Technology of CNC Machine Tool with Multi Axis Linkage

作　　者：张万军[1,2,3,4] 张峰 张景轩[2] 张景怡 张景妍 张万良 ZHANG Wanjun;ZHANG Feng;ZHANG Jingxuan;ZHANG Jingyi;ZHANG Jingyan;ZHANG Wanliang(Xi’an Jiaotong University,Xi’an Shaanxi 710049,China;Qingyang Xinyuan Engineering Company Limited,Qingyang Gansu 745000,China;Lanzhou of Industry and Equipment Company Limited,Lanzhou Gansu 730050,China;Quanzhou University of Information Engineering,Quanzhou Fujian 362000,China)

机构地区：[1]西安交通大学机械工程学院,陕西西安710049 [2]庆阳鑫圆工程有限公司,甘肃庆阳745000 [3]兰州工业化设备有限公司,甘肃兰州730050 [4]泉州信息工程学院,福建泉州362000

出　　处：《机床与液压》2019年第2期1-5,17,共6页Machine Tool & Hydraulics

基　　金：国家科技重大专项(2014ZX040001-181);国家自然科学基金资助项目(51165024)

摘　　要：为了提高多轴联动CNC机床的加工精度,减小由机械传动及电气控制等因素造成的轮廓误差,针对多轴联动CNC机床伺服采用交叉耦合参数选择困难及稳定不强等问题,提出一种交叉耦合轮廓补偿的控制方法,建立交叉耦合轮廓误差补偿的模型,搭建了x轴、y轴及z轴仿真实验平台。仿真实验结果表明:轮廓误差补偿的算法使用交叉耦合误差补偿算法进行控制,可以大大降低轮廓误差。In order to improve the machining precision of multi axis CNC machine tool,decrease contour error by mechanical transmission and electric control factors,aiming at the difficulties and instability of cross-coupled parameter selection in multi axis CNC machine tool servo,a kind of cross coupled contour error compensation control method was put forward,cross coupled contour error compensating model was established,and the x axis and y axis and z axis simulation experiment platform was set up.Simulation results show that the contour error compensation algorithm is controlled by cross coupled error compensation algorithm,which can greatly reduce the contour error.

关 键 词：CNC多轴联动的数控机床 轮廓误差 交叉耦合控制 轮廓误差补偿 运动控制 

分 类 号：TP659[自动化与计算机技术—控制理论与控制工程] TH161.5[自动化与计算机技术—控制科学与工程]