切线法数控成形非球面机床的定位误差研究  

Positioning error research of aspheric CNC machine tools by Tangent method

作　　者：于博[1] 于正林[1] 朴承镐[1] 

机构地区：[1]长春理工大学,吉林长春130022

出　　处：《制造技术与机床》2014年第2期24-27,共4页Manufacturing Technology & Machine Tool

基　　金：国家自然科学基金资助项目(50775014)

摘　　要：分析了切线法数控成形非球面机床产生定位误差的原因,提出了一种改进型PID控制算法和开发型UMAC软件补偿并行的定位补偿方法,并给出了实现该方法的具体步骤。通过建立改进型PID控制模型和开发型UMAC误差修正表对该机床进行了定位误差补偿实验,结果表明该补偿方法可以有效地减小数控机床的定位误差,大幅度地提升数控机床的定位精度。The paper analyzes the cause of the positioning error produced in aspheric CNC machine tools by Tangent method,proposes the positioning compensation method combining the improved PID control algorithm and the developing UMAC software compensation,and gives implementation steps of the method. Through the establishment of the improved PID control model and suitable UMAC error correction table apply the machine positioning error compensation experiment,the results show that the compensation method can effectively reduce the positioning error of CNC machine tools and greatly improve positioning accuracy of CNC machine tools.

关 键 词：数控机床 定位误差 软件补偿 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]