Sharp VH-25 Series Operator's Manual page 26

5、 Automatic Feed : ( 20VB, 20VC )
For automatic feeding, please take the following steps :
a. Loosen the quill lock ( L ).
b. Turn the power feed transmission engagement crank ( I ) 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 ).
d. Pull the feed control lever ( F ) from ( F1 ) to ( F2 ) position ( Fig.23 ) to engage the
overload clutch for automatic feed mechanism.
e. When the feed reverse knob ( D ) pressed in ward ( Fig.22 ) ,it is for downward feed,
and vice-versa. The middle position is neutral.
f. As shown in ( Fig.23 ) , the working depth may be set by micrometer adjustment nuts
( K ) (each graduation is 0.001" or 0.002 mm ). When the quill stop block ( I ) contacts
the micrometer adjustment nut ( K ), the feed control lever ( F ) may slimply 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 10 mm.
The power feed transmission engagement crank ( I ) shall be placed at " OUT
2.
" position when the automatic feed is not in operation. Do not move the power
feed transmission engagement crank when the spindle is in revolution.
F
F F
2 1
N
OPERATOR'S MANUAL
M
Fig.24
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