Darex XT-3000A - Manual (Page 53)

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Rotate the Chuck
until one of the
alignment dogs rests
firmly against the
Alignment.
Rotate the Pawl
Locating Cam until
the arrow lines up to
the major diameter
of the drill. As
indicated by the logo
on the Timing Arm,
rotating it will have
an impact on the
amount of relief
ground on the drill. Unless the drill is intended for
a unique material, it is
our recommendation
that it stay in its normal
location. Push the drill
through the chuck until
the pilot starts to pass
through the Alignment.
Slide the Length Setting Pawl until it almost
touches the pilot. Continue to slide the drill
through the chuck until the major diameter stops
against the Length Setting Pawl.
Rotate the drill CW until the cutting edges align
with the pawls. The drill is now set to length and
oriented to the chuck cam. Tighten the chuck and
remove it from the Alignment.
SETTING UP THE X-Y TABLE:
Utilizing the X-Y Table, the angle ground into the
step portion of the drill can be 90°-180°. Loosen
the Pivot Lock Knob and slide table to the desired
angle. Tighten the knob.
With the XT-3000 OFF, Slide the chuck into the
Sharpening Fixture making sure the drill is clear of
the grinding wheel. Using both the X and Y axis
knobs, position the drill close to, but not touching
the wheel.
Now, turn your
machine ON .
Continue to
position the
drill into the
wheel while
rotating the
chuck.
It will be
necessary to
slightly undercut the pilot of the step drill to
produce a sharp corner at the end of the pilot
and beginning of the step.
Refer to the diagram below.
Once you are satisfied with the results, turn the
cross feed knob with your right hand CCW to
remove the drill from the grinding wheel. Carefully
remove the chuck from Sharpening Fixture. The
sharpening is now complete. During the
sharpening process, should you remove an
excessive amount of material, due to damage, it
will be necessary to re-align the drill and sharpen
again.
Y-Axis Knob X-Axis Knob
Pivot Lock Knob