Sharp 1118H, Operations Manual & Parts List, Page: 15 / 68

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R.) POWER FEED UNIT
The carriage Power Feed unit is mounted on the carriage.
It is powered by a AC motor “M” (Figure 28).
1. The power feed can be operated only when the machine is running. Start the power feed
by turning Cam Switch “S” (Figure 29).
2. The Cam Switch “S” (Figure 29) controls the direction of the power feed.
3. The carriage Feed Control “N” (Figure 29) controls the rate of feed. When Cam Switch
“S” (Figure 29) is placed in “RIGHT” position, the carriage will feed toward the right, the
cross slide will feed away from the operator.
4. When Cam Switch “S” (Figure 29) is placed in “LEFT” position, the carriage will feed
toward the left, the cross slide will feed toward operator.
5. Turn Cam Switch “S” (Figure 29) to “STOP” position, power feed motor is turned off.
6. The rate of the carriage feed should be pre-selected to suit each particular job, which
depend on material, diameter, type of cut, and tooling used.
7. The numbers on the carriage feed control panel, do not represent either thousandths
per revolution or inches per minute. So the operator must test sample pieces for
determining the spindle speed and rate of feed which can best suit to the requested
surface finish and production rate, then record the proper settings after testing.
NOTE
：
： ：
：
WHEN STARTING INTO PRODUCTION. AN OPERATOR CAN SET THE FEED
CONTROL “N” TO THE RECORDED REFERENCE SETTING, THEN THE
SAME TESTED RESULTS WILL BE OBTAINED.
Figure 28-AC Motor Figure 29-Power Feed Unit
S
N
M