Jet J-1600R, Operating Instructions And Parts Manual

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Do not try to change gears
while spindle is turning. This may cause
serious damage to spindle drive system.
To select spindle speed:
1. Allow spindle to stop rotating.
2. Press emergency stop button.
3. Move short lever (C, Figure 12) to position “1”
or “2”.
4. Move long lever (D) to appropriate position. (If
lever C is in position “1”, refer to arrow marker
“1” for the reading. If lever C is in position “2”
refer to arrow marker “2” for correct reading.)
5. Move HI/LOW change lever (E) to desired
position. When this lever is in HI setting, use
the red numbers on the spindle speed readout
(F). When this gear is in LOW setting, use the
black numbers on the spindle speed readout.
Note: An instruction plate is located near the gear
change levers for quick reference to this
procedure.
Allow spindle to stop completely before attempting
to change gears. If gear change lever you want to
move does not slip easily into new position, jog the
motor for a second using the control lever. Then
allow spindle to come to a stop before attempting
to change gears again. Repeat this jogging
process, as necessary, until gears match up
properly for changing.
Plan for quill movement if
selecting high speed spindle rotation. High
speed rotation without quill travel will increase
spindle temperatures.
8.9
Feed rate and depth of cut
The J-1600R has limit switches on the quill which
cut power to drive motor when quill has reached
either upper or lower limit of its travel. This system
is designed to prevent gearbox damage if power
feed mechanism is engaged – damage which
would occur if quill were to bottom out against
upper or lower limit of quill travel. In the event of
failure of either limit switch there is also a safety
clutch mechanism which will slip when travel limits
are reached.
However, while you are able to use virtually full
travel of the quill for drilling or other operations, the
drill press operator typically sets both rate of feed
(travel-per-revolution of spindle), and depth of cut
(quill travel to make required cut).
These two operations are described here:
8.10
Setting feed rate
The feed rate is set using dial/lever combination on
front of drill head. See Figure 13. The dial can be
rotated to select different feed rates, and the lever
can be moved to two positions, thus providing six
different feed rates. The selected rate is displayed
in the readout window on the dial.
Figure 13: Feed rate setting mechanism
Any of three feed rates are available for selection
using any of the spindle speeds available. There
will be a recommended feed rate for any drilling or
boring operation, and this rate must be determined
by consulting appropriate machinery handbooks or
by consulting with your tooling, coolant and
workpiece suppliers.
8.11
Feed methods
The J-1600R has three feed methods: power feed,
hand feed and fine hand feed. When using the
power feed system it is possible to establish a pre-
set depth of cut.
8.12
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 power feed when a pre-set depth
has been reached.
1. Set feed rate according to instructions in
section 8.10; Setting feed rate
.
2. Set spindle speed appropriate to desired cut
(section 8.8; Setting spindle speed)
.
3. Push power feed engagement lever to left to
engage power feed system.
4. Turn power switch to ON.
5. Move spindle/arm control lever to required
spindle rotation direction.
6. Pull feed levers outward, away from drill head,
to engage power feed clutch. In this power
feed position, 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 power feed; or
• Drill press operator pushes feed levers
into disengaged position; or