Sharp TMV Series, Service And Parts Manual

Page: 28 / 105

24
5 Automatic Feed:
For automatic feeding, please take the following steps (Vide P.21 P22):
a.
Loosen the quill lock (L).
b. Turn the power feed transmission engagement crank (j) from "OUT" to "IN"
position. 'Make certain to engage the worm gear cradle with the spindle gear hub
so that the driving will be directed from the spindle worm and worm gear before
it is passed to the speed change gears.
c.
Feed speed is in three stages. H, L and M. Selection may be made by quill feed
selector (C). Put feed reverse knob (D) (Fig. 13) on neutral before change feed
speed.
d. Pull the feed control lever (F) from (F1) to (F2) position (Fig.14) to engage the
overload clutch for automatic feed mechanism.
e.
When the feed reverse knob (D) pressed inward (Fig.13), it is for downward feed,
and vice-versa. The middle position is neutral.
f. As shown in (Fig.14), the working depth may be set by micrometer
adjustment nuts (K) (each graduation is 0.001" or 0.02mm). When the quill stop
block (I) contacts the micrometer adjustment nut (K), the feed control lever (F)
may simply jump from (F2) back to (F1) position owing to the connecting
motion between the feed trip lever and feed trip plunger. This will disengage the
overload clutch and stop the spindle feed.
Note:
1. Maximum drilling
capacity in automatic
feed is 3/8" or l0 mm.
2. The power feed
transmission
engagement crank
(I)(Vide P.21, P.22)
shall be placed at
"OUT" position when
the automatic feed is
not in operation. Do
not move the power
feed transmission
engagement crank
when the spindle is in
revolution.
3. Very Important!
Bring quill stop block (1)
(Fig.14) at least 5mm
downward from the
high-end position
before engage feed
control lever (F).