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For Machines Mfg. Since 5/11 | O P E R A T I O N | 14" |
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Apron Threading Controls
The half nut lever engages the carriage with the leadscrew which moves the carriage and cutting tool, along the length of the workpiece for threading operations (see Figure 78).
Important: Make sure the feed selection lever is in the disengaged (middle) position before attempting to engage the half nut.
Half Nut
Feed ControlLever
Lever
Thread Dial
The numbers on the thread dial are used with the thread dial chart to show when to engage the half nut during inch threading. The thread dial gear must be engaged with the leadscrew for this to work. Loosen the knurled knob on the thread dial, pivot the dial gear toward the leadscrew so that it properly meshes with the leadscrew threads, then
Leadscrew
Dial Gear
Knurled
Knob
Cross Slide
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Disengaged
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Carriage
Feed Control
Lever
Disengaged