MVC850B型立式数控铣床误差分析与补偿试验研究

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...

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

Aiming at the fluctuation problem of milling machine processing accuracy in actual production of enterprises,the Renishaw 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 measurement 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 relationship 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.