五轴数控机床的动态特性测定和调整方法  

Dynamic characteristic measurement and adjustment of 5-axis CNC machine tool

作　　者：魏杰[1] 蒋荣良 邹捷[2] 彭锦群 

机构地区：[1]辽宁建筑职业学院机械工程系,辽宁辽阳111000 [2]武汉华中数控股份有限公司,湖北武汉430023

出　　处：《制造技术与机床》2015年第12期111-114,共4页Manufacturing Technology & Machine Tool

基　　金："高档数控机床与基础制造装备"科技重大专项课题(2012ZX04001-012)

摘　　要：五轴机床对机床装备制造业意义非凡,RTCP功能是衡量五轴机床性能的重要指标。在执行RTCP过程中,由于旋转轴的加入,需要对直线轴进行非线性补偿,因此旋转轴和直线轴的伺服动态特性需要进行测定和调整,才能保证加工动态精度。文章对RTCP原理进行了简单介绍,设计了一种五轴动态精度测定算法,通过该算法对五轴机床的5个伺服轴特性进行了强弱排序,从而对伺服参数进行优化和调整。以五轴叶轮加工为例,将伺服参数调整前后所加工的叶轮的加工质量进行对比,证明该方法取得了较好的效果。Five- axis machine is significant for tool equipment manufacturing industry,and the function of RTCP is a very important reference to evaluate the performance of a five- axis machine tool. During the process with the RTCP function turning on,it needs a nonlinear position compensation for the linear axes because of the rotary axes,so the ability of servo following of the linear axes and rotary axes is required to guarantee the processing dynamic precision. In this paper,the principle of RTCP is introduced and a kind of five- axis dynamic precision measurement algorithm is designed. According to the algorithm,the five axes are ordered,which helps to optimize and adjust the servo parameters. Taking five- axis impeller machining as an example,the machining quality of the impellers is compared before and after the adjustment of the servo parameters,and it shows that the better results are obtained.

关 键 词：RTCP 五轴动态精度 伺服不匹配度 

分 类 号：TH122[机械工程—机械设计及理论]