Darex XPS-16 Operating Instructions - Manual (Page 22)

22
of the primary
facet produced
may be very
thin. The
thicker the
web of your
drill, the wider
the primary facet will appear.
Split Point Selector
• With each touch of the icon
you will bring up the next
split style option. There are
3 split point options: No Split, X- split
(Standard) and R- Split. (Radius) The XPS-16
will produce a chisel angle ground to
approximately 130°.
NOTE: Factory default is “SPLIT”.
• “NO SPLIT” – Select when reproducing a
non-split drill point style.
• “X-SPLIT” – 4° split point rake angle is
created, producing a drill with a self-
centering point. Its advantages are the
ability to reduce thrust and eliminate walking
at the drill point. This is a distinct advantage
where drilling bushings/fixtures are not used.
• “R-SPLIT” – The R-split selection is not
an option until the web thickness value
has been manually entered. Changing
the amount of radius and rotation is
adjustable. This is done in the Split Point
Offset screen .
Refer to information on
page 35 for details.
• An R-split will produce a drill with a self-
centering point as well as act as a chip
breaker producing smaller chips, which can
readily be ejected. The radius will assist the
flow of chips and reduce chip impaction at the
tip of the drill.
Relief Screen Selector
• Select lip relief clearance from 5° to
18° +/-2°. The diameter and the point
angle will determine the degrees of
possible relief. See tables below.
NOTE: The degree of relief entered, will ap-
pear on the relief selector button on the
main screen menu.
Facet with thin web Facet with thick web
POINT ANGLE 118 – 124
POINT ANGLE 125-134
POINT ANGLE 135-144
POINT ANGLE 145-150
Relief Screen
• Type in desired margin relief.
NOTE: If you enter a degree of
relief outside the capability range
of the sharpener or the drill di-
ameter/point angle, the setting
will default to the nearest MIN/
MAX relief amount for that spe-
cific diameter/point angle of drill.
DIAMETER DEGREES OF RELIEF
.118 – .245 8 – 18
.245 – .370 6 – 16
.370 – .495 5 – 14
.495 – .625 5 – 12
DIAMETER DEGREES OF RELIEF
.118 – .245 8 – 16
.245 – .370 6 – 14
.370 – .495 5 – 12
.495 – .625 5 – 10
DIAMETER DEGREES OF RELIEF
.118 – .245 8 –15
.245 – .370 6 – 13
.370 – .495 5 – 11
.495 – .625 5 – 9
DIAMETER DEGREES OF RELIEF
.118 – .245 8 – 14
.245 – .370 6 – 12
.370 – .495 5 – 10
.495 – .625 5 – 8
Touch Screen Details