27
1 9.
COUNTERSINK SHARPENING DEVICE
SVR 20
For sharpening countersinks with the BSM 20 / SZ,
this special accessory type SVR 20 is required. Arrest
the turning mechanism on the BSM 20 drill sharpening
machine in hole
A
(see picture on page 26). Fix the
stepless clearance angle adjustment on the third
graduation mark from above (see picture). The prism
rest fix at
90°
(see draw).
Place your countersink inside the collets of the SVR
20 and align one cutting edge parallel to the line on
the SVR 20, below the collets nut (see also drawing
E). With the screw
I
and
J
(see the drawing on the
right) you can adjust the distance between the SVR 20
and the grinding wheel. For bigger countersinks the
SVR is positioned backwards and can only fixed with
one screw on the adaptor plate. Slide the SVR 20 on
the turning mechanism to the stop dog and fix with the
clamping screw.
By turning the hand wheel of the SVR 20 clockwise
and carefully moving forward with the prism feed on
the BSM 20 you can sharpen the flutes of your
countersink.
It is absolutley recommended grinding with a clean and parallel dressed grinding wheel.
For one-flute countersinks you have to mount the special cam (Art No. 1 0605) for
adjusting see drawing
F
.
ATTENTION! When you align the tip of countersink parallel to the graduation line
on the SVR 20, take care that the bigger hole is on this side.
tip
collet nut
graduation
mark
collet nut
graduation
mark
graduation
mark
collet nut
