Common Mechanical Trouble Shooting in Precision Parts Processing
In the process of precision parts processing, except for a few self diagnosis functions that can display faults, most of the faults can not determine the specific cause. We have listed several common troubleshooting for reference.
As rolling friction pairs are widely used in the guide rail, most of the feed transmission failures are caused by the decline of motion quality, such as mechanical components not reaching the specified position, motion interruption, decline in positioning accuracy, excessive reverse clearance, etc. In case of similar failures, adjust the preload of each motion pair, adjust the loose link, improve the motion accuracy and adjust the compensation link.
The machine tool returns to zero fault. When the machine tool returns to the reference point, an over length alarm occurs, and there is no decrement action. This kind of fault generally refers to that the minus signal is not input to the CNC system, and the limit stop and signal line can be checked generally.
Automatic tool change device failure. Such failures are common. The failures are shown as: tool magazine movement failure, excessive positioning error, tool change action not in place, tool change action detent, and the whole machine stops working. Such failures can generally be eliminated by detecting the cylinder pressure, adjusting the position of each limit switch, detecting the feedback signal line, and adjusting the machine tool parameters related to tool change action.
In the process of precision parts processing, the machine tool cannot move or the processing accuracy is poor, which are some comprehensive faults. When such faults occur, they can be eliminated by readjusting and changing the clearance compensation, detecting whether there is creeping in the shaft feeding, and other methods.