Drilling, four -blade center drilling, hole drill, step drill, hole drill, alien drill, etc.
1. When the drill bits are installed on the drill cover, you must clean it and you must not have debris;
2. The adjustment of each drill bit is the same;
3. Install the jacket when installing it on the machine tool, pay attention to the direction;
4. Replace the drill cover with large wear in time;
5. Pay attention to adjusting the speed of the drill and the pressure on the board;
6. Pay attention to replacement after passivation.
Common problems of drills:
1. Causes of explosive mouth:
a) Give the speed too fast;
b) The drill cover is loose;
c) Diamond bit passivation or lack of shortage;
D) Drilling bias;
e) The board is moved during processing.
2. The cause of the broken blade bending (the handle is not heat treatment below the heat treatment):
a) Give the speed too fast, causing the diligence;
b) The drill bits are swinging too much;
c) Continue to use after passivation;
d) Drilling on hard objects or impurities during processing.