Application questions/measures
1.1 Drill tip wear
Reason:
1. The workpiece will move down under the force of the drill bit, and the drill bit will bounce back after drilling.
2. The machine tool is not rigid enough.
3. The drill bit material is not strong enough.
4. The drill bit beats too much.
5. The clamping is not rigid enough, and the drill bit slides.
Measures:
1. Reduce the cutting speed.
2. Increase feed capacity
3. Adjust the cooling direction (internal cooling)
4. Add a chamfer
5. Check and adjust the coaxiality of the drill bit.
6. Check whether the rear corner is reasonable.
1.2 Ligament collapse blade
Reason:
1. The workpiece will move down under the force of the drill bit, and the drill bit will bounce back after drilling.
2. The machine tool is not rigid enough.
3. The drill bit material is not strong enough.
4. The drill bit beats too much.
5. The clamping is not rigid enough, and the drill bit slides.
Measures:
1. Choose a drill bit with a larger back cone.
2. Check the spindle bit jump range (<0.02mm)
3. Drill the top hole with a predetermined heart drill.
4. Use a more rigid drill bit and a hydraulic chuck with a shrink neck sleeve or heat shrink kit.
