Siemens SINUMERIK 880 Programming Manual page 116

4 Programming of Motion Blocks
4.3.2 Thread with constant lead
If > 45°, the lead in the X direction (parameter ) must be
programmed instead of the lead in the Z direction (parameter K).
Example: Transversal thread
X
W
Lead h = 2 mm
Thread depth t = 1.3 mm
Infeed direction perpendicular to cutting direction
Absolute position data input:
L F
N40 G90 S . . .
L F
N45 G00 X4 Z82
N50 Z79.35 L F
L F
N55 G33 X36 I2
N60 G00 Z82 L F
L F
N65 X4
L F
N70 Z78.7
L F
N75 G33 X36 I2
L F
N80 G00 Z82
N85
.
.
.
4–58
P3 P4
P6
P5
P2 P1
t
80
(P1)
(P2)
(P3)
(P4)
(P1)
(P5)
(P6)
(P4)
© Siemens AG 1991 All Rights Reserved
3
h=
3
10 30
SINUMERIK 880, (PG)
05.91
Z
6ZB5 410-0HD02