Jet ETM-949, Operating Instructions Manual

Page: 14 / 52

14 MILL
The quill power feed lever is located on the right side of
the mill head (Figure 9). It is used to engage and disen-
gage the quill power feed mechanism.
The power feed is engaged by pulling out the knob and ro-
tating the handle to a new locked position. When engaged,
the power feed mechanism will drive the spindle upward or
downward. The power feed mechanism will not drive the
spindle when the handle is in the disengage position.
9.7 FEED RATE LEVER
The Feed Rate Lever (Figure 10) is used to set the
per-revolution rate of the power feed mechanism. Three
feed rates are available: 0.0015-inch, 0.003-inch, and
0.006-inch per revolution. The positions are shown on an
indicator plate under the feed rate lever.
The rate is selected by pulling out the knob on the feed
rate lever and moving the handle to the detent of the de-
sired feed rate.
Do not move the Quill Power Feed Lever unless
the motor is at a complete stop. When changing
the lever position, do it gently. If the gear does not
engage, jog the motor and allow it to stop before
attempting to change.
!
Fig. 9
9.8 FEED TRIP CAM LEVER
The Feed Trip Cam Lever (A, Figure 11) is located on
the left side of the head behind the Manual Fine Feed
Handwheel (B, Figure 11). It engages the overload clutch
on the pinion shaft when positioned to the left. The Feed
Trip Cam Lever stays engaged until Quill Stop (C, Figure
14) comes in contact with Micrometer Adjusting Nut (A,
Figure 14) forcing it to drop out automatically, or until it is
released manually by engaging the lever to the right.
!
It is recommended to disengage the power feed
worm gear whenever the power feed is not required.
This avoids unnecessary wear on the worm gear.
Note: The knob is spring loaded – pull out to rotate to
new position.
Unlike other controls on the machine, the lever shifts into
engagement more easily with the motor running, and the
quill feed lever engaged.
Quill Power Feed
Lever
Fig. 11
A
B
Fig. 10
Feed
Rate
Lever