TM 9-3418-200-14 & P
The stroke is now adjusted to the correct length--it may not however be regulated to the correct position. The ram must be
located so that the stroke covers the work, (fig. 37). To do this, loosen the ram clamp handle in the upper slotted part of
the ram. This will allow the ram to move to the desired position. To locate this position, turn the shaper with the
handwheel until the crank is at its extreme forward position. Now, loosen the ram clamp handle and set the ram so that
the tool clears the work by 1/4 inch. When this correct position of the ram has been reached, tighten the ram clamp
handle.
The work is now mounted in the vise. The stroke has been adjusted for both length and position. You are now ready to
set the horizontal travel for automatic feed.
Generally speaking a coarse feed is used for roughing cuts, while a fine feed is used for finishing. Set the eccentric
(fig. 35) for a feed of approximately 0.004 by releasing the-locking screw, moving the feed rod with its graduated scale to
the correct position and retightening the screw. Now, with the eccentric slot in a vertical position, loosen the setscrew
releasing the lower end of the feed rod, and line up the feed pawl casting holding the horizontal feed pawl and gear. Turn
it into position so that it is vertical and parallel to the slot in the feed crank. Retighten the setscrew locking the feed rod in
position (fig. 38).
The scale on the eccentric is graduated in both directions from the center. This is necessary so that the horizontal travel
can be regulated on the back stroke whether the table is traveling from left to right, or from right to left. The automatic
feed must be set in this eccentric so that the ball crank advances while the ram is in its backward stroke. When it is
correctly adjusted, the pawl lifts on the spring while the ram is in its forward or cutting stroke--engages the teeth and
advances the ball crank when the ram is in its backward stroke. If this is incorrectly adjusted the table would be moving
sideways as the tool is advancing in its cutting stroke. When changing from a left cut to a right cut the feed must be
changed to the opposite side of dead-center in the slot of the eccentric.
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