Precautions for the Use and Maintenance of Multi Wedge Belt in Longmen Surface Grinding Machine

The grinding head of the gantry surface grinder is driven by a multi wedge belt and is a vulnerable part. When it needs to be replaced and disassembled frequently, the nut at the bottom of the grinding head motor should be loosened first, the adjustment bolt on the motor base should be adjusted to reduce the center distance between the motor spindle and the grinding head spindle, and then the multi wedge belt should be removed from the belt pulley and replaced with a new one.

However, when replacing the motor, some users do not pay attention to whether the motor spindle is adjusted to be horizontal. They just need to pull the motor up with the adjusting bolt, and adjust a large amount of wedge belt preload before use. In this way, the belt will be damaged soon, and the powder will not fall off from the belt. Attention should be paid to that the motor spindle must be leveled, otherwise the belt pulley will damage the belt. When adjusting the multi belt preload, the direction of the belt pulley is usually slightly lower. At this time, first tighten the bottom nut above the rear of the motor, and then adjust the bolt upward to make the front of the motor easy to pull up. Then tighten the nut above the front of the motor, and loosen the rear of the motor Above the nut, then adjust the bolt upwards and repeat the adjustment until the motor spindle is level.

Longmen surface grinder reminds that the pre tightening force of multiple belts should be appropriate at the same time, and all four nuts at the bottom corner of the motor should be tightened. When installing multiple belts, please wipe off the lubricating grease on the pulley. If there is too much grease on the pulley, the multiple belts will slip when the grinding feed is large, which is manifested as the relative motion between the grinding wheel and the workpiece, that is, the grinding wheel suddenly stops. In addition, the pre tightening force of the multiple wedge belt cannot be too small, otherwise it will slip and make abnormal noises.