Drilling problems and Solutions

Question No. Problem description
1 Aperture Ultra Difference
2 Horn Hole
3 Hole Roundness Is Not Good
4 Poor Surface Quality of Holes
5 Burr At The Exit of The Hole
6 Chipping
7 Back of Drill Bit Blocked Chips
8 Bit Breaking
9 Blocked Chips


1 2 3 4 5 6 7 8 9 Solutions
Reduce tool nose run out
increase Inverted cone
Reducing blade height difference
Improving tool symmetry
Improving cutting edge type
Improving blade treatment
Increase point angle
Tool length reduction
Select and use coating
Increasing internal cooling pressure
Cutting speed reduction
Improving cutting speed
Reduce feed
Raise feed

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