Let project the drill
min. 40 mm
outside
the prism and align one cutting edge to
graduation line
2
(picture 2). Fix the diamond dresser in the prism and dress the inside of
the wheel to
60°
(picture 3). Adjust prism
support to
180°
. Clearance angle as per your
request. Adjust the star knob screw in hole
B
.
With the motor feed pass from left to right by
swiveling the prism.
Grinding the center tip:
Let the drill fixed in prism. Prism support to
118°
, adjust prism base between
30 and A
(picture 4, page 1 0). Clearance angle
adjustment between
2 and 3,5
and lock star knob screw in boring
C
. By moving motor-
and prism feed, move to the cross-cutting edge and sharpen the form like a pyramid.
Notice marks on both scales (motor- and prism feed) turn the prism and repeat the
grinding operation.
11.
CARBIDE DRILLS FOR STONE
Only sharpen with diamond- or silicone grinding
wheel. Let project the drill
approx. 30 mm
outside the
prism. Align one cutting edge parallel to the straight
graduation line (picture 2, Pos. 2). Prism support to
118°
and base adjustment to
130°
. Clearance angle
to graduation
2
(depending on your type of your drill,
more or less). Fix star knob screw in boring hole
B
.
By using the motor feed, grind from the outside to the
inside over the tip. Turn prism
for 180°
and repeat
grinding procedure.
For correcting the main cutting edge, keep drill fixed
inside the prism, only fix the unit in boring hole
A1
.
Repeat grinding procedure as before.
1 3
12.
GRINDING OF SHEET METAL DRILLS
GRINDING OF NC DRILLS
90°
Let project your NC drill
15 mm
outside
the prism
and place cutting edge parallel to drill grinding
adjustment (picture 2, Pos 3). Adjust the prism
support to
90°
and clearance angle adjustment to
3,2
(more or less). Move prism feed by swiveling and
sharpen one side. Turn prism and sharpen the second
side.
11 8°
2
1
1
2 3
1 30°
Picture 1
Picture 2
Picture
3
Picture 4