Auto-Downfeed - Grizzly G0726 Owner's Manual

Auto-Downfeed

When using the auto-downfeed system, the spin-
dle will move in the direction you choose with the
auto-downfeed direction pin. When the quill dog
reaches the top or meets the downfeed stop, the
downfeed clutch lever will release. Then, if the
spindle was traveling upward, the movement will
simply stop. If the spindle was traveling down-
ward, then the spindle will move back to the top
at a rate controlled by the return spring on the left
side of the head.
To use the auto-downfeed:
Manual (Disengaged) Position
1. Make sure spindle is completely stopped.
2. Pull downfeed selector knob out, then rotate
it clockwise until knob pin seats in the auto-
downfeed (engaged) detent (see Figure 44).
Note: It may be necessary to turn spindle by
hand as you move selector to engage gears.
Auto-Downfeed (Engaged) Position
Figure 44. Downfeed selector in auto-downfeed
(engaged) position.
3.
Position downfeed stop for desired spindle
depth, then secure it in place with locking
wheel.
-38-
4. Position auto-downfeed direction pin in cen-
ter of handwheel for desired direction of spin-
dle travel. If necessary, rock fine downfeed
handwheel back-and-forth to move pin all the
way in or out.
Note: The direction pin has three positions
(see Figure 45): 1) In for one downfeed
direction, 2) middle for neutral or no move-
ment, and 3) out for the reverse direction.
The direction of spindle travel for in and out
positions is relative to direction of spindle
rotation. Keep in mind that spindle rotation
and downfeed direction will reverse when the
spindle speed range is changed.
One Direction
Out to
Reverse Direction
Middle for Neutral
Fine Downfeed Handle
Figure 45. Three positions of auto-downfeed
direction pin.
5. Make sure clutch lever is all the way to the
right in the disengaged position so spindle
will not travel when rotation is started.
Note: We recommend that you complete
the remaining steps without a cutting tool
installed, without a workpiece in place, and
with the table lower than the maximum
spindle downfeed travel. This will enable you
to test and confirm settings before beginning
actual cutting.
To avoid damage to the system gearing,
never use the auto-downfeed system with
spindle speeds over 1750 RPM.
Model G0726 (Mfg. Since 7/11)
In for
Pin