HEIDENHAIN iTNC 530 (340 420) ISO programming User Manual
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8 Programming: Cycles
8.4 Cy
cles f
o
r Milling P
o
c
k
ets, St
uds and Slots
Direction of rotation during rough-out
n
In clockwise direction: G75 (DR-)
n
In counterclockwise direction: G76 (DR+)
U
U
U
U
Set-up clearance
1
(incremental value): Distance
between tool tip (at starting position) and workpiece
surface.
U
U
U
U
Milling depth
2
(incremental value): Distance
between workpiece surface and bottom of pocket
U
U
U
U
Plunging depth
3
(incremental value): Infeed per cut
The TNC will go to depth in one movement if:
n
the plunging depth is equal to the depth
n
the plunging depth is greater than the depth
U
U
U
U
Feed rate for plunging:
Traversing speed of the tool
during penetration
U
U
U
U
First side length
4
(incremental value): Pocket
length, parallel to the reference axis of the working
plane
U
U
U
U
2nd side length
5
: Pocket width
U
U
U
U
Feed rate F:
Traversing speed of the tool in the
working plane.
U
U
U
U
Rounding off radius:
Radius for the pocket corners.
If radius = 0 is entered, the pocket corners will be
rounded with the radius of the cutter.
Calculations:
Stepover factor k = K x R
K:
is the overlap factor, preset in MP7430, and
R:
is the cutter radius