数控机床几何误差特性及其测量方法研究  

Characteristics of Geometric Errors in a CNC Machine Tool and Their Measurement Method

作　　者：刘焕牢[1] 李斌[2] 王贵[1] 师汉民[2] 

机构地区：[1]广东海洋大学工程学院,湛江524025 [2]华中科技大学国家数控系统工程研究中心,武汉430074

出　　处：《机械科学与技术》2007年第12期1570-1573,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家高技术研究发展计划项目(2002AA423260);国家自然科学基金项目(50672015);广东海洋大学自然科学基金项目(0512145;0612003)资助

摘　　要：分析了数控机床几何误差和定位误差的异同。指出了数控机床定位误差测量的前提条件是误差值要表示为指令位置点坐标的函数,从而进一步明确了数控机床满足这一条件的基本要求。在此基础上,提出了数控机床末端定位误差的基本特性是相对性、位置依赖性、连续性。并用试验的方法验证了以上特性,为数控机床的误差测量、误差补偿提供了理论依据和实践方法。We analyze the differences and similarities of geometric errors and positioning errors in a CNC machine tool. The analysis indicates that the preconditions for its positioning error measurement is that the error value should be expressed as the function of the coordinates of positioning points, thus identifying the basic requirements to be satisfied by the CNC machine tool. Based on the analysis, we put forward the following characteristics of its positioning errors： relativity, position dependency and continuity. Moreover, we do experiments to verify the above characteristics, providing theoretical basis and a practical method for the error measurement and compensation of a CNC machine tool.

关 键 词：数控机床 几何误差 定位误差 测量误差 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]