Jet J-1230R, Operating Instructions And Parts Manual

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8.11 Setting depth of cut using
power feed system
There is a mechanism for engaging power feed
and there is also a “trip” mechanism which can
be set to disengage the power feed when a pre-
set depth has been reached.
The feed levers (A, Figure 13) can be pulled
outward or pushed inward on pivots in the feed
lever hub. When the levers are pushed toward
the drill head, the power feed mechanism is
disengaged. When the feed levers are pulled
outward, the power feed system is engaged. In
the power feed position (outward) the quill and
spindle will be driven until one of the following
happens:
•
Spindle reaches limit of travel and the
limit switches disable power; or
•
The “trip” mechanism automatically
disengages the power feed; or
•
The drill press operator pushes the feed
levers into the disengaged position.
To set depth of cut:
Refer to Figure 13.
1. Rotate feed levers (A) counterclockwise to
lower the drill until it just contacts the work
piece. Drill-to-workpiece contact represents
zero depth position.
2. Push lever (B) to unlock depth control.
3. Rotate dial (D) until the indicator (E) is at the
feed depth required on the scale (C).
4. Push lever (B) to lock depth setting.
5. Pull feed levers (A) outward to engage
power feed clutch.
Figure 13
Note: Because the dial (D) makes one rotation
before contacting the mechanical trip dog, you
are limited to 4 inches (100mm) of travel during
any power feed operation when using this dial
depth stop system. If you need to make deeper
holes, you must do the machining in steps.
Power feed is used only for drilling, not for
threading. Feed rate must be set (off neutral) for
power feed to be engaged.
8.12 Spindle direction and power
feed
Spindle rotation direction is managed by the
arm/spindle control lever on the left hand side of
the drill head. See Figure 10.
Clockwise or "forward" rotation is the direction of
rotation for right-hand tooling – the vast majority
of tooling used in machine operations. Reverse
spindle rotation for left hand tooling.
Power feed direction is determined by the
spindle direction. When spindle is set to its most
common direction – clockwise or forward – the
quill and spindle are driven downward. When
spindle direction is set counterclockwise
(reverse), quill and spindle are driven upward.
8.13 Hand feed – roughing
operations
When the feed levers are pushed toward the drill
head the power feed mechanism is disengaged.
In this position, the feed levers can be used to
move the quill and spindle and perform manual
drilling or other machining operations.
8.14 Fine hand feed using power
feed system
The fine feed control wheel is located on the
underside of the right-hand side of the drill head.
See Figure 10. The fine feed control is used as
follows:
1. Set feed rate dial to N (neutral).
2. Pull feed levers out to engage power feed
clutch.
3. Turn on drill press, and set arm/spindle
control lever to desired direction.
4. Turn fine feed control wheel by hand. Quill
and spindle will move downward or upward
(depending upon which way you turn the
wheel and the direction the spindle is
turning) until you stop turning the control
wheel.