CNC Z32 - Programming Guide (LATHES)
In threadings with more than one worms, the tool retracts axially from the workpiece, and executes all worms,
before to proceed with the next pass.
The threading ends with a circular arc with radius equal to the return distance between tool and workpiece, defined
by the J parameter. Due to the non infinite axes acceleration, this distance must allow to stop the axes.
The final programmed point is never overcome.
X
3
2
1
J
J / 2
Z
X
Z
5. Cylindrical threadings
It is possible to execute external or internal threadings, both on negative or positive X ranges. The figure shows the
possible programming modes.
X
Z
1
2
3
4
100
50
M2
4
x
3
M4
0
x
3
The end section of the thread is connected starting from the programmed J distance.
Examples referred to the above figure:
Thread 1
.........
G0 X45 Z5
G905 X40 NZ5 Z-103 K3 E100 J3 NS5 NF1
........
Thread 2
.........
95