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4.5 Thread Cutting
4.5 Thread Cutting
4.5.1 Thread Cutting (Lead/Thread Number Designation); G33
C6
T system
∆
L system
{
M system
∆
C64
L system
{
T system
∆
(1) Lead designation
The thread cutting with designated lead are performed based on the synchronization signals from
the spindle encoder.
G33
Zz1
G33
Zz1
Qq1
Ff1
Ee1
Qq1
Ff1/Ee1
;
: Thread command
: Thread length
: Shift angle ("q1" is the shift angle at thread cutting start, within 0 to 360°)
: Thread lead
: Thread lead (precise lead threads)
The tables below indicate the thread lead ranges.
[T system, M system]
Metric command
Least input
increment
(mm)
0.001
0.0001
Inch command
F (mm/rev)
E (mm/rev)
0.001
~999.999
0.0001
~99.9999
0.00001
~999.99999
0.000001
~99.999999
Least input
increment
(inch)
0.0001
0.00001
F (inch/rev)
E (inch/rev)
0.0001
~39.3700
0.00001
~3.93700
0.000001
~39.370078
0.000001
~3.937007
[L system]
Metric command
Least input
increment
(mm)
0.001
0.0001
Inch command
F (mm/rev)
E (mm/rev)
0.0001
~999.9999
0.00001
~99.99999
0.00001
~999.99999
0.00001
~99.99999
Least input
increment
(inch)
0.0001
0.00001
F (inch/rev)
E (inch/rev)
0.00001
~99.999999
0.000001
~9.9999999
0.000010
~9.9999999
0.0000010
~0.99999999
The direction of the axis with a large movement serves as the reference for the lead.
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