HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 227)

HEIDENHAIN CNC PILOT 4290 227
4.20 Cont
our
-Based T
u
rn
ing Cy
cles
Machining information:
„ Transition from turning to recessing: Before the transition from
turning to recessing, the CNC PILOT retracts the tool by 0.1 mm.
Thus an offset cutting edge is adjusted for the recessing operation,
independent of “offset width B.”
„ Inside radii and chamfers: Depending on the recessing width and
the radii of rounding arcs, single cuts preventing a "fluid transition"
from recessing to turning are executed before the rounding is
machined. This prevents damage to the tool.
„ Edges: Edges are recessed. This prevents residual rings.
Cycle run (where Q=0 or 1)
1 Calculates the areas to be machined and the cutting
segmentation.
2 Approaches workpiece for first pass from starting point, taking
the safety clearance into account.
„ Radial recess: First Z, then X direction
„ Axial recess: First X, then Z direction
3 Executes the first cut (recessing).
4 Machines perpendicularly to recessing direction (turning).
5 Repeats 3 to 4 until the complete area has been machined.
6 If required, repeats 2 to 5 until all areas have been machined.
7 If Q=0: Finish-machines the contour.