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pushed inward -- on pivots which are in the feed lever
hub. When the feed 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 EITHER
until they reach the limit of travel and the limit
switches cut off power -- OR until the trip mechanism
disengages the power feed, automatically -- OR until
the drill press operator pushes the feed levers into the
disengaged position.
To set the depth of cut
1. Unlock lever A -- See Fig. 2.
2. Use the feed levers to lower the drill until it touches
the work piece.
3. Rotate the dial D until the rivet on the dial -- C -- is
at the feed depth required on the scale on graduated
dial B.
4. Lock lever A.
5. Pull the feed levers out to engage the power feed
clutch.
Note: Because the ring for Dial B makes one
rotation before contacting the mechanical trip dog,
you are limited to 4 inches (100mm) of travel during
any power feed operation. If you need to make
deeper holes you will need to do the machining in
steps.
feed rates, plus a neutral position where the power
feed does not operate on the quill.
It is recommended that when doing operations
which do not require power feed that the dial be set to
the neutral position. This minimizes any wear on the
power feed mechanism.
The feed rate selected is indicated by a pair of
rivet heads on the edge of the rate setting dial. These
values are indicated on the far outer edge of the
readout.
Clearly, whenever the indicator rivets are at an
"N" position, no feed or "neutral" has been selected.
Any of the 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 machining
handbooks or by consulting with your tooling, coolant
and work piece suppliers.
Setting depth of cut using the power
feed system
There is a mechanism for engaging the power
feed and there is also a mechanism (a "trip mecha-
nism) which can be set to disengage the power feed
when a pre-set depth has been reached.
The feed levers can be pulled outward -- or
Figure 2: Power feed controls