HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 68)

68
Cont
our
-det
er
mined
tu
rning cy
cles
Contour-parallel with neutral tool G835
G835 machines the contour area defined by ”NS, NE” parallel to the
contour and bidirectionally.
Parameters
NS, NE: Starting and end block numbers (reference to contour section)
P: Maximum approach - Maximum infeed distance
I, K: Allowances (I diameter value) – default: 0
X/Z: Cutting limit (X diameter value)
A, W: Approach angle, departure angle (reference: Z axis)
n Approach angle – default: 0°/180° (parallel to Z axis)
n Departure angle – default: 90°/270° (perpendicular to Z axis)
Q: Type of retraction after machining – default: 0
n Q=0: return to starting point (first X and then Z direction)
n Q=1: position in front of finished contour
n Q=2: move to clearance height and stop
V: Machining chamfers/roundings at start/end of contour – default: 0
chamfer/rounding is machined:
n V=0: at beginning and end
D G22 G23 G23 G25 G25 G25
= H0 H1 H4 H5/6 H7..9
0 • • • • • •
1 • • • – – –
2 • • – • • •
3 • • – – – –
4 • • – – • –
„•“: Skipping elements
n V=1: at beginning
n V=2: at end
n V=3: no machining at start or end
n V=4: only single chamfers/roundings are
machined – not the base element
(requirement: the contour must consist of one
element)
D: Skip the element (influences the machining of
undercuts, free rotations: see table) – default: 0
• Cutter radius compensation: is carried out
• Offsets (G57/G58): are effective