HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 221)

HEIDENHAIN CNC PILOT 4290 221
4.20 Cont
our
-Based T
u
rn
ing Cy
cles
The CNC PILOT uses the tool definition to distinguish between
external and internal machining.
Program at least NS or NS, NE and P.
D Omit elements. The following undercuts, relief turns and
recesses are not run (default: 0):
G22 G23
H0 G23
H1 G25
H4 G25
H5/6 G25 H7
to H9
D=0 • • • • • •
D=1 • • • – – –
D=2 • • – • • •
D=3 • • – – – –
D=4 • • – • • –
“•”: Do not machine the elements
„ The tool radius compensation: is active.
„ A G57 oversize enlarges the contour (also inside
contours).
„ A G58 oversize
„ >0: Enlarges the contour
„ <0: Is not offset
„ G57/G58 oversizes are deleted after cycle end.
Cycle run
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.
3 Executes the first cut (roughing).
4 Approaches for the next pass and execute the next cut
(roughing) in the opposite direction.
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 Retracts as programmed in Q.
Parameters