Spindle Downfeed - Grizzly G0836 Owner's Manual

Spindle Downfeed

Spindle downfeed movement on the mill is con-
trolled by the coarse downfeed lever or the fine
downfeed knob.
Downfeed Controls
Use Figure 21 and the following descriptions to
become familiar with spindle downfeed controls.
Identification
A
Figure 21. Identification of downfeed controls.
A. Quill Lock. Secures quill in place for
increased stability during operations. Use
supplied quill lock hex wrench to loosen and
tighten quill.
B. Spindle Depth DRO. Shows depth of
spindle downfeed in inches or millimeters.
Measurement can be set to zero at any point
along spindle travel.
C. Fine Downfeed Knob. Manually controls
rate of fine spindle downfeed.
D. Downfeed Selector Knob. Tighten to use
spindle with fine downfeed knob. Loosen to
use spindle with coarse downfeed handles.
E. Coarse Downfeed Handle. Manually con-
trols quick spindle downfeed.
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B
C
D
E
Using Coarse Downfeed
Coarse downfeed is typically used for drilling,
because it allows you to quickly lower the spindle
with varying speed/pressure, and it automati-
cally retracts the spindle to the top position when
released.
Note: To maintain control of the upward spindle
travel and the rotating bit in your workpiece,
always continue holding the lever until the spindle
returns to the top position. Letting go of the lever
too soon will cause the spindle to retract too
quickly and slam up into the headstock.
To use coarse downfeed:
1.
Loosen downfeed selector knob to engage
coarse downfeed handles (see Figure 22).
Figure 22. Location of downfeed controls.
2.
Loosen quill lock with quill lock hex wrench
(see Figure 23).
Quill Lock
Figure 23. Location of quill lock controls.
3. Turn spindle depth DRO ON and zero it out.
4. Use coarse downfeed handles to raise and
lower spindle while referencing spindle depth
DRO for precise movement.
Model G0836 (Mfd. Since 09/17)
Downfeed
Selector
Knob
Coarse
Downfeed
Handles
Quill Lock
Hex Wrench