Leadscrew Drive; Threading; Thread Dial Indicator - Sharp 16 Series Manual

5. THREADING

5-1 Leadscrew Drive.

Move the forward/reverse lever (○
leadscrew to rotate backwards, moving the lever to the left the leadscrew will
rotate forward and when lever is in neutral the leadscrew will stop.
5-2 Threading
1. After selecting the thread to be cut, set the following levers to the
appropriate position: ○
2. Turn of the lathe.
Engage the half nut by pushing ○
3.
engaged.

5-3 Thread Dial Indicator

1. Thread dial indicator for Imperial leadscrew
To cut even number threads the leadscrew can be engaged on any number
of line. For odd number threads the leadscrew can be engaged on any
number. Fractional threads (1/2, 1/4 etc.), leadscrew can only be engaged on
the same number or line.
Note: When cutting metric threads on a lathe with an Imperial leadscrew, be
sure the half nut is engaged at all times. (If not, the thread will not repeat).
of item 1-1) to the right will cause the
4
, ○ & ○
of item 1-1. (Example 18 t.p.i. PAE2)
5 6 7
of item 1-1 down, making sure it is fully
18
17