CLAUSING 5914 - Machine Controls; Quick-Change Gear Box

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THREA6--FEED
SELECTOR LEVER
Figure 7
MOTOR CONTROL LEVER located on front of head-
stock conttols rotation of lathe spindle. It has three
positions -- REVERSE, OFF, and FORWARD -- refer
to figure 7_-
To reverse rotation of motor and spindle:
I. Move lever to "OFF" position and allow spindle
to stop.
2. Move lever to FORWARD or REVERSE position .
Caution: Always allow spindle to stop before revers-
ing rotation.
LEAD SCREW DIRECTION LEVER, located on front
of headstock, has three positions. Center position is
neutral - - gear train is disengaged, lead screw does
not turn. Lower position moves carriage toward tail-
stock. Upper position moves carriage toward head-
stock.
Caution: Always stop spindle before shifting le ad
screw direction lever.
QUICK-CHANGE GEAR BOX
The quick-change gear mechanism determines the rate
of rotation of lead screw in relation to the rpm of
the spindle for threading, and for rurning and fac-
ing operations.
8.1
See figure 7 for the location of the controls des-
cribed below. Their positions for thread or feed
selected are shown on chart.
SLIDING GEAR HANDLE changes the ratio between
the spindle and lead screw. There are two positions - -
IN and OUT. Do not shift while sp indl e is turning.
THREAD AND FEED SELECTOR HANDLE. To shift,
pull out on handle, drop lever, sJide - to pos i tion de-
sired, raise lever and push in the ha ndle to engage
lock pin. If selector handle does not slide easily,
turn sliding gear handle while shifting.
SELECTOR KNOB has three positions -- A, B, and C.
Engaged position is vertical. If knob doesn't shift
easily, place lead screw direction lever in ne utral
(center position), and turn sliding gear handle until
knob can be engaged - - do no t force.
CLUTCH AND BRAKE COUNTERSHAFT MODELS
Countersh aft has friction clutch and brake for s tarting,
stopping and jogging of spindle without stopping
the motor. Moving clutch lev er up engages spindle
drive -- down dis e ngages it and tightens the brake
shoe and stops the spindl e. Clutch kickout can be
positioned to automatic a lly disengage clutch - - refer
to figure 8.
To set clutch kickout , determine stopping point then
clamp to clutch control bar so clutch will be complet e ly
disengaged at stopping point .
HANDWH
CARRIAGE
TOOL POST
TOOL POST SLIDE
HANDWHEEL
- UT LE
WER FEED LEVER
Figure 8
\
CLUTCH
LEVER
G
The function of the carriage is to rigidly support
the cutting _ tool, and to move it along or across the
bed - - refer to figure 8.
5910
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