Dust masks (or protective masks) and glasses must be worn.
Before work, check whether the grinding wheel is damaged, whether the safety protection device is intact, and whether the ventilation and dust removal device is effective.
Before installing the grinding wheel, it must be checked whether the maximum speed allowed by the grinding wheel is compatible with the spindle speed. Wheels larger than 200 mm should be statically balanced. Cracked or defective wheels are not allowed.
The diameter of the grinding wheel chuck should not be less than 1/3 of the diameter of the grinding wheel. The chuck and the grinding wheel should be cushioned with a soft liner of 1-2 mm, and the outer diameter should be 2 mm larger than the diameter of the clamping surface of the chuck.
When installing the elbow, pay attention to the degree of compression of the nut. It should be compressed until the grinding wheel rotates without slipping. When there are multiple compression screws, the screws should be tightened gradually and evenly in the diagonal order.
After the grinding wheel is installed, the protective cover must be reinstalled, and then the trial rotation is carried out. Grinding wheels with a diameter less than 400 mm should be idle for 2 minutes; wheels with a diameter greater than 400 mm should be idle for 5 minutes. When the grinding wheel rotates, no obvious vibration is allowed.
When adjusting the wheel guard and workpiece carrier, it must be done after the wheel stops. Always keep the distance between the workpiece carrier and the grinding wheel less than 3 mm.
When polishing, start the dust suction device, hold the workpiece firmly, do not use excessive force, and do not use the lever to push the component. It is strictly forbidden to stand on the front of the grinding wheel to prevent the grinding wheel from breaking and hurting people.
Grinding wheels that are not specifically used for end face grinding are not allowed to be used for end face grinding.
When using a hand-held electric grinder to grind, there must be a solid protective cover and a protective zero line or a leakage protector, and follow the safe operation rules of the electric hand grinder.
After the work is completed, the power supply should be cut off and the grinding wheel must be stopped before leaving the position.