-42-
For Machines Mfd. Since 12/21
South Bend Tools
Model SB1007
O P E R A T I O N
2.
Rotate high/low range switch to correct
setting for speed indicated on gear chart
(shown below): 1 (low) or 2 (high).
3.
Shift spindle speed levers to correct settings
for spindle speed range (see Figure 56).
Note:
If spindle speed levers do not easily
slide into position, rotate spindle by hand
while applying pressure to lever. When gears
align, lever will move easily into place. If you
have trouble rotating spindle by hand, use
spindle chuck key to get additional leverage.
Just be sure to remove key when you are
done.
4.
Reset STOP button. Start spindle rotation
using spindle direction switch.
Figure
Figure 56. Spindle speed gear chart.
. Spindle speed gear chart.
1
2
600
410
110
300
200
55
1100
2200
Spindle Speed RPM
To avoid damaging spindle gears, ALWAYS
make sure spindle is completely stopped
BEFORE shifting spindle speed levers.
The spindle speed levers control the gear
configuration in the headstock, while the high/
low range switch determines high or low motor
speed.
To set spindle speed RPM:
1.
Press STOP button and make sure spindle
has completely stopped.
Additionally, the books Machinery's Handbook
or Machine Shop Practice, and some internet
sites, provide excellent recommendations for
which cutting speeds to use when calculating the
spindle speed. These sources provide a wealth
of additional information that will help you
take into account all the applicable variables in
order to determine the best spindle speed for the
operation.
Setting Spindle Speed
The spindle speed levers (see Figure 55) are
used in combination with the high/low range
switch to select any one of eight spindle speeds.
Figure
Figure 55. Spindle speed controls.
. Spindle speed controls.
Spindle
Spindle
Speed
Speed
Levers
Levers
High/Low
High/Low
Range Switch
Range Switch
Figure
Figure 54. Spindle speed chart for cutting common
. Spindle speed chart for cutting common
metals, taken from "How to Run a Lathe."
metals, taken from "How to Run a Lathe."
For your convenience, the table below provides a
set of pre-calculated spindle speeds for a variety
of workpiece sizes of different metal types. To
use this table, select the diameter that is closest
to your workpiece size, look across the row to the
number provided for your metal type, and then
set your spindle RPM at or near that number.
Содержание SB1007
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