HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 227)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 227
4.6 C-axis cont
ours—F
undamentals
Circular pattern with circular slots
For circular slots in circular patterns you program the pattern positions,
the center of curvature, the curvature radius and the position of the
slots.
The Steuerung positions the slots as follows:
 Slots are arranged at the distance of the pattern radius about the
pattern center if
 Pattern center = center of curvature and
 Pattern radius = curvature radius
 Slots are arranged at the distance of the pattern radius + curvature
radius about the pattern center if
 Pattern center <> center of curvature or
 Pattern radius <> curvature radius
In addition, the position influences the arrangement of the slots:
 Normal position: The starting angle of the slot applies as a relative
value to the pattern position. The starting angle is added to the
pattern position.
 Original position: The starting angle of the slot applies as an
absolute value.
The following examples show the programming of a circular pattern
with circular slots: