We continue to introduce solutions to some common faults of sanding machines.

Fault 4: After replacing the abrasive belt, the cutting size changes

When the locking block is loosened or locked, the position of the cantilever of the sanding machine fluctuates greatly, which should be within 0.5mm normally. If it is too large, when the locking block locks the cantilever, the difference in the locking force will cause a difference in the repeatability of the cantilever, which will cause fluctuations in the size of the sanding plate and directly affect the sanding accuracy of the sanding machine. When the error of the cantilever is too large (more than 0.5mm), the fixing bolt of the locking block should be unscrewed and adjusted properly. At the same time, when the abrasive belt is replaced, the locking force of the locking block should be consistent.

Fault 5: The conveyor belt is intermittently conveyed or not conveyed

Generally, the above situation cannot be observed during work, and can only be found when idling, because the reduction worm gear that transmits power is partially worn or completely worn. Although it will not affect the work, other worm gears will shorten their life and cause greater losses due to the increased workload. Therefore, once this situation is found, the worm gear should be replaced immediately.

Fault 6: Abnormal vibration of the bearing seat

Under normal circumstances, the vibration of the main bearing seat is very small, and an experienced operator can judge whether it is normal by touching it. Generally, there is no condition to use an instrument to measure it on site, but it can be judged by comparing it with other bearing seats, or from the surface of the sanding board. inferior to judge. When the vibration of the bearing seat is abnormal, there are generally two reasons. One is that the bearing is damaged, just replace the bearing, and the other is that the contact roller is worn and the original dynamic balance is damaged, resulting in abnormal vibration. In this case, the emery roller must be removed Make repairs.

Related information:
Fault repair and maintenance of sanding machine(1)