Grizzly G0810, Руководство пользователя

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Model G0810 (Mfd. Since 10/15)
Spindle Downfeed
Figure 38. Location of spindle downfeed
controls.
Coarse
Downfeed
Levers
Downfeed
Selector
Fine Downfeed
Handwheel
Spindle downfeed movement on the drill press
is controlled by two mechanisms: 1) The coarse
downfeed lever, and 2) the fine downfeed
handwheel (see
Figure 38). Refer to Controls &
Components on Page 4 for detailed descriptions
of all downfeed controls and components.
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 automatically
retracts the spindle back to the top position when
released.
To engage coarse downfeed, make sure the
spindle is completely stopped, and loosen the
downfeed selector (see
Figure 38).
Note: To maintain control of the upward spin-
dle travel, always continue holding the coarse
downfeed levers until the spindle returns to the
top position. Letting go of the levers too soon will
cause the spindle to retract too quickly and slam
up into the headstock.
Using Fine Downfeed
Fine downfeed is typically used for precise, non-
retractable Z-axis positioning of a cutter or end-
mill when milling a flat surface across the face
of a workpiece. The fine downfeed handwheel is
equipped with a graduated collar (see
Figure 38)
with 0.001" increments. Each complete revolution
of the handwheel equals 0.100".
In order to ensure the milled surface remains flat,
the quill lock lever should be locked after each
adjustment to ensure the spindle height cannot
move until the entire milling operation is complete.
To engage fine downfeed, make sure the spindle
is completely stopped, and tighten the downfeed
selector. Rotate the fine downfeed handwheel to
raise or lower the spindle (see
Figure 38).
Graduated
Collar