HEIDENHAIN CNC Pilot 4290 - Manual (Page 120)

4 DIN PLUS 108
4.5.8 Circular Pattern with Circular Slots
In addition to the pattern positions, for circular patterns you program
the center and radius of curvature. DIN PLUS and TURN PLUS
calculate the position of the slots from the center of the pattern and
center of curvature:
■ If pattern center = center of curvature and
pattern radius = radius of curvature,
then: Pattern position = center of slot center line
■ Pattern center ≠center of curvature or
pattern radius ≠ center of curvature,
then: Pattern position = center of curvature
Slots arranged at distance of ”pattern radius”
around the pattern center point.
All slots are located at the same position
(center of curvature = center of pattern)
Slots arranged at distance of ”pattern radius+
curvature radius” around the pattern center
(pattern center point: X=5; Y=5).
Slots are arranged at the distance of the ”pattern radius“
curvature radius” around the pattern center
while retaining the starting/end angles
(pattern center point: X=5; Y=5).
Example for a slot center as reference and normal position:
. . .
N7 G472 Q4 K30 A0 X0 Y0 H0
N8 G373 X0 Y0 R15 A-20 W20 B3 P1
Example for a slot center as reference and original position:
. . .
N7 G472 Q4 K30 A0 X0 Y0 H1
N8 G373 X0 Y0 R15 A-20 W20 B3 P1
Example of a center of curvature as reference and normal position:
. . .
N7 G472 Q4 K30 A0 X5 Y5 H0
N8 G373 X0 Y0 R15 A-20 W20 B3 P1
Example for a center of curvature as reference and original position:
. . .
N7 G472 Q4 K30 A0 X5 Y5 H1
N8 G373 X0 Y0 R15 A-20 W20 B3 P1
The following rules apply for the orientation of the
slots (pattern definition):
■ Normal position: The starting/end angles are
defined relative to the pattern positions. (The
orientation angle is added to the starting/end angle.)
■ Original position: Starting/end angles are defined
absolutely.
The following examples and figures show the
programming of a circular pattern with circular slots.
4.5 Geometry Commands