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一、丝杠螺距误差补偿的基本原理 在半闭环位置控制系统中,从位置编码器或旋转变压器等位置测量器件返回到数控系统中的轴运动位置信号仅仅反映了丝杠的转动位置,而丝杠本身的螺距误差和反向间隙必然会影响工作台的定位精度,所以对丝杠的螺距误差进行正确的补偿在半闭环系统中是十分重要的。 图1描述了丝杠螺距误差补偿的基本原理。
First, the basic principles of lead screw pitch error compensation In the semi-closed loop position control system, from the position encoder or resolver position measuring device returns to the numerical control system axis position signal reflects only the rotation of the screw position, and silk The pitch and backlash of the bar itself will inevitably affect the positioning accuracy of the workbench. Therefore, it is very important to correct the pitch error of the lead screw in the semi-closed loop system. Figure 1 depicts the basic principle of lead screw pitch error compensation.