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Workpiece Defect |
Cause |
Prevention and Solution |
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Roundness error |
1. The height of the center of the workpiece is not appropriate, resulting in a round edge 2. The grinding wheel is too hard 3. The guide wheel is not properly dressed 4. The grinding wheel is unbalanced 5. The workpiece has a large allowance 6. Insufficient cutting fluid causes thermal deformation of the workpiece |
1. Increase the center height of the workpiece when odd-numbered edge circles are produced, and decrease the center height of the workpiece when even-numbered edge circles are produced. 2. Choose a grinding wheel with softer hardness to increase the self-sharpening of the grinding wheel and reduce the grinding force. 3. Re-dress the guide wheel, When dressing, the offset and rotation angle of the diamond pen should be appropriately reduced 4. Rebalance and dress the grinding wheel 5. Increase the number of grinding times 6. Make the cutting fluid sufficient to reduce the grinding heat in the grinding area |
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Cylindricity difference |
1. Improper choice of pallet or top wear 2. Improper position of pallet 3. Improper position of guide plate 4. Worn grinding wheel |
1. Replace the supporting plate 2. Re-adjust the position of the supporting plate so that the axis of the workpiece is parallel to the axis of the grinding wheel and the guide wheel 3. Re-adjust the position of the guide plate 4. Re-dress the grinding wheel |
|
Surface roughness error |
1. The grain size of the grinding wheel is coarse, and the dressing speed is too fast. 2. The penetration speed of the workpiece is too fast. 3. The cutting fluid is insufficient and unclean. 4. The material of the workpiece is uneven |
1. Choose a finer-grained grinding wheel, and reduce the dressing speed appropriately 2. Reduce the inclination angle of the guide wheel 3. Filter or replace the cutting fluid, and cool it down sufficiently 4. Re-conduct heat treatment |
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Surface appearance defects |
1. The guide plate is too loose or too tight 2. The grinding wheel is not round or vibrates |
1. Readjust the guide plate 2. Readjust and dress the grinding wheel |
