Installation and use of grinding wheel

1. Before installing and using the grinding wheel, the appearance must be inspected to see if there are any cracks or damages. The grinding wheel should be struck with a wooden hammer, and the sound should be crisp. Before use, a rotation test should be carried out in accordance with the provisions of GB/T2493 standard, otherwise, it is strictly prohibited to use. 2. Before installation, the spindle speed of the machine tool must be checked, and it must not exceed the working speed indicated on the grinding wheel. 3. Only special nut wrenches are allowed to tighten the grinding wheel, and they must be tightened gradually in sequence on both sides of the spindle. The nuts should be appropriately tight. It is prohibited to use additional clamps or knocking tools. Turn off the coolant to avoid imbalance of the grinding wheel. 5. The matching of the grinding wheel aperture and the grinding wheel spindle and chuck should comply with the provisions of GB4674 standard. 6. The newly installed grinding wheel must be installed with a protective cover and The working speed is idling for the following time: no less than 2 minutes for grinding wheels with an outer diameter <400 mm, and no less than 5 minutes for grinding wheels with an outer diameter ≥400 mm. When idling, the operator should not stand in front of the grinding wheel or in the tangential direction.7. Grinding wheels that are not specially used for end face grinding (such as parallel grinding wheels) should not be ground with the end face of the grinding wheel. Grinding wheels that are not specially used for external cylindrical grinding (such as bowl-shaped and cup-shaped grinding wheels) should also not be ground with the outer cylindrical surface of the grinding wheel to avoid breaking the grinding wheel.8. When grinding the workpiece, it is forbidden to push the workpiece with a lever to increase the pressure on the grinding wheel.9. For thin-sheet grinding wheels and cymbal-shaped grinding wheels, if too much force is used during cutting, the grinding wheel may easily stop and get stuck or break, causing damage to the grinding wheel. When cutting workpieces, multiple workpieces cannot be stacked up for cutting to prevent accidents.