Circular Interpolation; Circular Interpolation Types (G2/G3 - Siemens Sinumerik 840D sl Programming Manual

Motion commands

10.6 Circular interpolation

Example 2: Machining of a groove (turning)
Program code
N10 G17 S400 M3
N20 G0 X40 Y-6 Z2
N30 G1 Z-3 F40
N40 X12 Y-20
N50 G0 Z100 M30
10.6 Circular interpolation
10.6.1

Circular interpolation types (G2/G3, ...)

Possibilities of programming circular movements
The control provides a range of different ways to program circular movements. This allows you
to implement almost any type of drawing dimension directly. The circular motion is described
by the:
● Center point and end point in the absolute or incremental dimension (default)
● Radius and end point in Cartesian coordinates
● Opening angle and end point in Cartesian coordinates or center point under the addresses
● Polar coordinates with the polar angle AP= and the polar radius RP=
● Intermediate and end point
● End point and tangent direction at the start point.
178
Comment
; Selection of the working plane, spindle clockwise
; Approach the starting position
; Tool infeed
; Travel on an inclined line
; Retraction for tool change
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals