Inspection And Repair Of Ball Screw Nut Pair And Support System Clearance

When the reverse error of the CNC machine tool is large, the positioning accuracy is unstable, and the tool marks appear in the quadrant, the first thing to check is whether there is a gap in the screw system. The detection method is as follows: use a dial indicator and a steel ball to place it in the center hole of one end of the screw to measure the axial movement of the screw, and another dial indicator to measure the movement of the worktable. Turn the lead screw forward and reverse, observe the values reflected on the two dial indicators, and confirm the fault location according to the different changes of the values.