Circular Interpolation With Polar Coordinates (G2/G3, Ap=, Rp=) - Siemens SINUMERIK 840DE Programming Manual

Programming Motion Commands

4.9 Circular interpolation with polar coordinates (G2/G3, AP=, RP=)

Example for turning
Programming a circle with arc angle and center point or end point
N125 G1 X40 Z-25 F0.2
N130 G3 X70 Z-75 AR=135.944
Or
N130 G3 I-3.335 K-29.25 AR=135.944
Or
N130 G3 I=AC(33.33) K=AC(-54.25) AR=135.944
N135 G1 Z-95
4.9 Circular interpolation with polar coordinates (G2/G3, AP=, RP=)
Programming a circle with polar coordinates
The circular movement
is defined by:
• The polar angle AP=
• and the polar radius RP=
The following rule applies:
The pole lies at the circle center point.
The polar radius corresponds to the circle radius.
Programming
G2/G3 AP= RP=
Parameters
G2
G3
4-28
X
3
25 25
54.25 54.25
95 95
Circular interpolation clockwise
Circular interpolation counterclockwise
Z
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals