| Question | Solution | |
| Drill bit damage | Front to surface wear | 1. Used in high-speed areas 2. Increase feed 3. In the case of internal coolant drilling, reduce the amount of oil supply and discharge. 4. Choose high-lubricant cutting oil |
| Chisel edge breakage | 1. Increase the width of the chisel edge 2. Increase the amount of passivation treatment on the cutting edge 3. Reduce the feed at the drilling entrance 4. Improve the clamping strength of the workpiece |
|
| Fracture of the peripheral part of the cutting edge | 1. Increase the processing capacity of the cutting edge 2. Reduce the front and rear knife angles 3. Reduce cutting speed 4. Reduce the feed 5. Use high lubricity cutting oil 6. Improve the clamping strength of the workpiece |
|
| man arrested wear | 1. Increase the inverse taper 2. Reduce the width of the edge 3. Reduce cutting speed 4. Increase feed 5. Use high lubrication cutting oil 6. Implement sharpening earlier |
|
| Breakage of drill bit body | 1. Increase the reverse taper 2. Reduce the width of the tool belt 3. Reduce the feed 4. Use high-lubricity cutting oil 5. Improve the clamping strength of the workpiece |
|
| Poor processing accuracy | Large aperture expansion | 1. Strengthen the overall strength of the drill bit (large core thickness, small groove width) 2. Reduce the vertex angle 3. Reduce the feed at the drilling entrance 4. Reduce cutting speed 5. Improve the clamping strength of the workpiece 6. Improve the installation accuracy of drill bits 7. Improve the clamping rigidity of the drill bit |
| Poor finishing surface roughness | 1. Increase the inclination 2. Increase the cutting speed 3. Use high lubricity cutting oil |
|
| Poor straightness | 1. Reduce the amount of passivation treatment on the cutting edge 2. Reduce feed 3. Improve the installation accuracy of drill bits 4. Improve the clamping rigidity of the drill bit 5. Improve the clamping strength of the workpiece |
|
| Poor cutting process | Chip jam | 1. Increase cutting speed 2. Increase feed 3. In the case of internal coolant drilling, reduce the amount of oil supply and discharge. |
| Constantly chipping | 1. Reduce the amount of passivation treatment on the cutting edge 2. Increase feed 3. In the case of internal coolant drilling, reduce the amount of oil supply and discharge. |
|
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