There are many kinds of failures caused by ball screws, and there is no fixed pattern. Some failures are gradual failures, which require a development process, and become more and more serious as the use time increases; sometimes they are sudden failures, generally without obvious signs, but suddenly occur, such failures are various Unfavorable factors and the interaction of the outside world. Therefore, to determine the true cause of the fault through correct detection is the prerequisite for fast and accurate maintenance.
Detection and repair of the gap between the ball screw nut pair and the support system When the CNC machine tool has a large reverse error, unstable positioning accuracy, or tool marks across the quadrant, the first thing to check is whether the screw system has a gap. The detection methods are: use a dial indicator to match the steel ball 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. Rotate the lead screw forward and backward, observe the values reflected on the two dial indicators, and confirm the fault location according to the changes in the values.
