Smithy MI-1440L, Руководство оператора, Страница: 30 / 62

Chapter 9
Powerfeeding
Overview
There are several steps to set up for using the power feed. Determining the
proper feed rate for a specific material and size of workpiece will require the
use of reference guides such as
Machinery's Handbook or Machinist Ready
Reference . This section instructs you in how to set up and operate the
powerfeeds.
Feed Chart and Setup
The feed chart is used to select desired feed rates. There Is a chart on the
front of the machine and in the picture below.
“a”
CROSS FEED
120 T
INCHES PER ONE
SPINDLE REVOLUTION
T
The first line of the chart shows the gears required to be installed in the
pulley box on the left end of the machine.
“a” 60T 30T
DIAL T S R V T S R V
A D .0187 .0175 .0140 .0112 .0094 .0087 .0070 .0056
B D .0094 .0087 .0070 .0056 .0047 .0044 .0035 .0028
A C .0047 .0044 .0035 .0028 .0024 .0022 .0017 .0014
B C .0024 .0022 .0017 .0014 .0012 .0011 .0009 .0007
DIAL 1-2-3-4 ON THE BLACK DOT
The remainder of the chart shows the positioning of the 4 dials on the front
of the gearbox. You must turn off the spindle and let it come to a complete
stop before changing any of the feed knobs.
Example:
The dial A-B on A, the dial C-D on D, and the dial R-S-T-V on T and the 1-2-3-
4- dial on the black dot, the feed rate on the cross feed is .0187” per one
revolution of the spindle.
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