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Threading
the following subsections will describe how to
use the threading controls and charts to set up the
lathe for a threading operation. if you are unfamil-
iar with the process of cutting threads on a lathe,
we strongly recommend that you read books,
review industry trade magazines, or get formal
training before attempting any threading projects.
Headstock Threading controls
the threading charts on the headstock face dis-
play the settings for inch and metric threading.
Using the controls on the lathe, follow the exam-
ple below to understand how to set up the lathe
for the desired threading operation.
To set levers and dials for 16 Tpi:
1.
Configure the gears, as instructed in the End
Gear configuration Example on page 56.
2.
locate 16 tpi on the inch threading chart
shown in figure 86.
lever & dial positions
g dial
position
E lever position
figure 86. 16 tpi and corresponding lever and
dial positions.
Model G0746/G0749 (Mfg. Since 3/13)
F lever
position
16 tpi
3.
to the left of 16 tpi, locate the E lever in the
2 position. above 16 tpi, locate the f lever
position and the G dial position—which will
be set to 1 (see figure 86).
Note: In the next step, use the chuck key to
rock the spindle back-and-forth to help mesh
the gears as you make adjustments.
4.
position the gearbox levers and dials, as
shown in figure 87.
F lever
position
g dial
position
˶
mm
F
Lever
G
G
Dial
figure 87. lever and dial settings for 16tpi.
5.
Move the leadscrew feed rod selection lever
up.
the lathe is now set up to cut 16 tpi threads.
E lever
position
selection
lever
3
2
1
E
Lever
Leadscrew (UP)
Feed Rod (DOWN)
Selection Lever
-57-
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