As the first-line operator of the CNC angle steel punching production line, if the hole distance of the angle steel line is not accurate during the work process, it will be a headache and there is no way to start. Then, what are the reasons for the inaccurate hole distance of the angle steel joint production line? Next, Shuochao will help answer the question.

1. Reasons for inaccurate hole distance of CNC angle steel line
① Whether the teeth of the external encoder pinion of Axis X are seriously worn.
② Check whether the pinion jack spring is stuck or too loose, which causes the pinion to not mesh effectively with the measuring rack.
③ Whether the key connecting the pinion and the shaft has clearance due to wear.
④ Whether the big gear shaft is seriously worn, whether the coupling between the synchronous belt pulley and the shaft is loose, and whether the tightness of the synchronous belt and the small belt pulley tension sleeve at the motor end are effectively connected.
⑤ Check whether the trolley swing arm and clamp rod of the angle steel line move, including the buffer cylinder.
⑥ Whether the external encoder cable is interfered by other power supplies, and whether the motor power line is aging, which needs to be replaced.
⑦ Check whether there is a gap between the clamping datum plane of the clamp and the angle steel.
⑧ Whether the clamp can firmly clamp the angle steel.

2. Solution to inaccurate hole distance of angle steel line
① Check one by one. If there are mechanical reasons above, eliminate them first.
② For empty car positioning measurement, if the difference between holes is regular, modify the pulse equivalent; If there is no rule to follow for the change of the hole distance, it is likely that external interference is large, and the shielding layer of the external encoder needs to be grounded, and the servo motor power line uses twisted pairs to reduce electromagnetic interference.