Testing method for wheel rotation strength

1. When the grinding wheel is installed on the rotary testing machine, the flange should be fastened. The size of the flange shall be as specified in Table 1 ^ 28. 2. If the diameter of the wheel to be inspected is larger than the outside diameter of the testing machine spindle, it is allowed to use the flange with sleeve. 3. In the same test machine allows the symmetry of the spindle at both ends of the same diameter and diameter of the installation of multiple pieces of grinding wheel, but the number of installed test shall not exceed the allowable installation thickness and weight. 4. A multi-turn, each piece must be with the outer diameter of the flange with the same size metal washers separated. Flange and metal washer must be flat without deformation. 5. For non-standard or non-flanged grinding wheels, the size of the flanges shall be selected in accordance with the adjacent, larger diameter grinding wheel. Testing method for wheel rotation strength 6. Tested wheel should be the first sound (sound〗 check, the sound can only be installed to the normal rotation test, if mute or sound is not normal, not installed test. 7. Grinding wheel to rotate, the speed can be increased directly to the required number of revolutions to maintain not less than 308 of the time. 8. Test machine spindle radial runout should not exceed 0.030101, the direction of the spindle head thread rotation should be the opposite direction of grinding wheel. 9. The grinding wheel that has passed the insurance period shall be re-tested for strength. 10. Rotation speed at the time of inspection is 1.6 times the maximum working speed, 11. Grinding wheel not marked with working line speed can only be used below 351/8 speed, and according to 351117〗 working speed for strength testing before use.