Split Points - DRILL DOCTOR XP Guia Del Usuario

Problem Cause
The Chisel Edge is not
The bit isn't completely ground
clean or straight.
yet.
Solution
Continue sharpening the bit until
the chisel is clean and straight.
If the machine quits removing
material before the chisel is
clean, re-align and sharpen again.
Problem The entire surface from the Cut-
ting Edge to the Heel will have a
Insuffecient (negative)
relief or a slow cutting finely ground surface without
drill bit.
ridges or indentations. The Heel
will always be lower than the
Cutting Edge (positive relief).
Heel Cutting Edge
Cause
Drill bit alignment.
Solution
Re-align the drill using the
Adjustable Alignment procedure
on page 18. To increase relief,
insert the Alignment Guide on
the Chuck closer to the (+) side of
the Alignment Port, then sharpen
the bit.
Problem Cause
Bit is backing out or
Chuck is too loose or you are
slipping out of the jaws
using too much pressure when
when you are sharpening.
sharpening.
Solution
Use more torque when tightening
the Chuck or less pressure when
sharpening. Clean the Chuck with
compressed air if the problem
persists.
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Split Points

Split point drill bits prevent walk-around on the material
before they begin to cut.
This feature is described as self-centering. The need to
center punch is effectively eliminated. A standard drill bit
chisel point has to wear an area in the middle of the hole
to be drilled before the cutting edges will remove material.
Due to its additional cutting lips along the chisel edge, a
split point will begin cutting immediately. Up to 70% less
thrust (when compared to a non-split or conventional
point) is required to drill a hole with a split point.
Optional Step: Splitting the Point
1.
2.
Splitting Port
Split Point Guide Rails
Sharpening Guide
Splitting Guide
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Leave bit in chuck after
sharpening
Always align and sharpen a
bit before splitting it. To split
the point, do not remove the
bit from the Chuck after
sharpening.
Align Guides
Align one of the Sharpening
Guides on the Chuck (short
white marks) with the Split-
ting Guide on the Splitting
Port. Port, making sure the
Alignment Guides insert into
the Split Point Guide
Rails in the Split-
ting Port.
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