VMCL600型立式加工中心精度检测与误差辨识

Geometry Precision Measuring and Distinguishing on VMCL600 Vertical Numerical Controlled Machine Center

通过对VMCL600型立式加工中心三轴误差元素的误差分析,建立其几何误差的数学模型,并在建模过程中消除了不确定的假设条件,使其求解简便、通用性好。同时,利用激光干涉仪对VMCL600型立式加工中心沿三个坐标方向测量9个运动方向的精度误差值和相应9项直线度误差值,并保证直线度误差测量与位移误差测量在同一直线上进行,提高了数控机床误差的辨识精度和测量效率。

This paper introduces the approach to analyze three-ax error of the VMCL600 vertical numerical controlled machine center, and builds up a figure model of such errors based on the instruments mentioned above. Indeterminate hypotheses are eliminated from the figure model. This can help to solve the problem more simply and conveniently. By using the laser interferometer, 9 displacement errors at 9 rectilinear motions are measured along three-axis, and corresponding 9 linear degree errors are also measured. Linear degree error and corresponding displacement error must be measured at the same line. The results indicated that the precision and efficiency of length-measuring are improved greatly.