On the premise that the CNC machine tool does not produce vibration and noise, increasing the speed loop gain of the CNC machine can improve the reverse overshoot and the overall roundness error. Solution to roundness error on machining center: When this problem occurs, first check the CNC system settings of the CNC machine tool, and measure the actual error with the ball bar meter. The graph shows that there is a small peak on a certain axis, and the size of the peak changes with the change of the feed rate of the machine tool. This phenomenon will make the tool path of arc interpolation appear a small platform and then reset to the original path. Reverse overshoot means that when the machining center is driven in a certain axial direction and has to move in the opposite direction, the torque applied by the driving motor is not enough, resulting in a short viscous pause at the reversing position due to the change of friction direction. Solution to roundness error on machining center: Using ball bar instrument to detect and input the measured error into CNC system of CNC machine tool for pitch compensation can usually reduce or reduce the error of reverse clearance. This will lead to the operation of the feed parts, due to excessive twist and cause reverse clearance. When the machining center is not used and maintained in time for a long time, the ball screw, nut pair and guide rail will be worn to varying degrees.
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