Programming and Operating Manual (Milling)
78 6FC5398-4DP10-0BA1, 01/2014
Helix interpolation: G2/G3, TURN
Functionality
With helix interpolation, two movements are overlaid:
● Circular movement in the G17, G18 or G19 plane
● Linear movement of the axis standing vertically on this plane.
The number of additional full-circle passes is programmed with TURN=. These are added to the actual circle
programming.
The helix interpolation can preferably be used for the milling of threads or of lubricating grooves in cylinders.
G2/G3 X... Y... I... J... TURN=... ; Center and end points
G2/G3 CR=... X... Y... TURN=... ; Circle radius and end point
G2/G3 AR=... I... J... TURN=... ; Opening angle and center point
G2/G3 AR=... X... Y... TURN=... ; Opening angle and end point
G2/G3 AP=... RP=... TURN=... ; Polar coordinates, circle around the pole
See the following illustration for helical interpolation:
; X/Y plane, Z standing vertically on it
; Approach starting point
N40 G3 X0 Y0 Z33 I0 J-25 TURN= 3
Feedrate override for circles: CFTCP, CFC
Functionality
For activated
(G41/G42)
, it is imperative to correct the feedrate at the
cutter center point if the
is to act at the circle contour.
Internal and external machining of a circle and the current tool radius are taken into account automatically if the tool radius
compensation is enabled.
This feedrate correction (override) is not necessary for linear paths. The path velocities at the cutter center point and at the
programmed contour are identical.
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