MVC850B 型立式数控铣床误差分析与补偿试验研究  

Research on Error Analysis and Compensation Experiment of MVC850B Vertical CNC Milling Machine

作　　者：薛邵文[1,2] XUE Shaowen(School of Intelligent Manufacturing and Automotive Engineering,Luzhou Vocational and Technical College,Luzhou Sichuan 646005,China;Sichuan Province Luzhou Key Laboratory of Intelligent Manufacturing,Luzhou Sichuan 646005,China)

机构地区：[1]泸州职业技术学院智能制造与汽车工程学院,四川泸州646005 [2]四川省泸州市智能制造重点实验室,四川泸州646005

出　　处：《机床与液压》2022年第4期180-186,共7页Machine Tool & Hydraulics

基　　金：四川省科技计划项目(2019YF90064);“四川机电一体化技术‘双师型’名师工作室”项目;泸州市智能制造重点实验室基金项目(ZZ202005);泸州职业技术学院2020年校级科研项目(K-2018);泸州职业技术学院科研创新团队建设项目。

摘　　要：针对企业实际生产中铣床加工精度波动的问题,应用Renishaw XL⁃30激光干涉仪对MVC850B数控铣床的定位误差进行精密检测与补偿试验。利用环境参数对比试验,得出影响定位误差测量的因素;通过三因素双指标正交试验判断进给速度、加工时间以及测距等输入变量对反向间隙与螺距累积误差影响的主次关系;通过单因素对比试验获得反向间隙与螺距累积误差在某个单因素影响下的变化情况;采用半闭环前馈补偿方式对数控铣床定位误差进行补偿,并进行工件加工验证试验。结果表明:所提出的误差补偿方法可以有效提高工件加工精度。Aiming at the fluctuation problem of milling machine processing accuracy in actual production of enterprises,the Ren⁃ishaw XL⁃30 laser interferometer was used to carry out precision detection and compensation experiments on the positioning error of the MVC850B CNC milling machine.The environmental parameter comparison test was carried out to obtain the factors affecting the meas⁃urement of positioning error;the influence of input variables such as feed speed,processing time and measurement distance on the backlash and pitch cumulative error was determined by three-factor dual-index orthogonal test to judge the primary and secondary rela⁃tionship of each input variable;the change of backlash and pitch cumulative error under the influence of a single factor was obtained through single factor comparative test.The semi-closed loop feedforward compensation method was used to compensate the positioning error of CNC milling machine,and the workpiece processing verification experiment was carried out.The results show that by using the proposed error compensation method,the machining accuracy of workpiece can be effectively improved.

关 键 词：数控铣床 误差分析 定位精度 反向间隙 误差补偿 

分 类 号：TG547[金属学及工艺—金属切削加工及机床]