G9729 Combination Lathe/Mill
-41-
Figure 47. 72 tooth gear installed at gear
position A.
The Model G9729 is capable of cutting many
standard inch and metric threads. Follow the pro-
cedures
listed in Changing Gears in the previous
section and change the gears according to the
chart for the thread desired.
Example:
The example shown in Figures 47–50 depicts
the order the gears should be installed for a
120/127, 72, and 30 tooth gear set-up.
Note—This example shows gearing for cutting a
5,
10, or 20 thread per inch (TPI) screw thread.
(The Feed Rate Lever set to the I position will
allow 5 TPI. When the lever is set to the II posi-
tion,
10 TPI will be cut and when set to the III
position 20 TPI will be cut.)
A
B & C
D
Figure 49. 30 tooth gear installed at gear
position D.
Figure 48. 120/127 tooth combination gear
installed at gear position B & C.
Figure 50. Feed rate lever set to I for 5 TPI.
B & C
D
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