HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 273)

HEIDENHAIN TNC 620 273
8.3 Cy
cles f
o
r Milling P
o
c
k
ets, St
uds and Slots
 Set-up clearance 1 (incremental value): Distance
between tool tip (at starting position) and workpiece
surface.
 Depth 2 (incremental value): Distance between
workpiece surface and bottom of pocket
 Plunging depth 3 (incremental value): Infeed per cut
The TNC will go to depth in one movement if:
„ the plunging depth is equal to the depth
„ the plunging depth is greater than the depth
 Feed rate for plunging: Traversing speed of the tool
during penetration
 First side length 4 : Pocket length, parallel to the
reference axis of the working plane
 2nd side length 5 : Pocket width
 Feed rate F: Traversing speed of the tool in the
working plane
 Clockwise
DR +: Climb milling with M3
DR –: Up-cut milling with M3
 Rounding 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
Example: NC blocks
11 L Z+100 R0 FMAX
12 CYCL DEF 4.0 POCKET MILLING
13 CYCL DEF 2.1 SETUP 2
14 CYCL DEF 4.2 DEPTH -10
15 CYCL DEF 4.3 PLNGNG 4 F80
16 CYCL DEF 4.4 X80
17 CYCL DEF 4.5 Y40
18 CYCL DEF 4.6 F100 DR+ RADIUS 10
19 L X+60 Y+35 FMAX M3
20 L Z+2 FMAX M99
X
Z
1
2
3
4
5
X
Y
DR+
40
80
55
35
15
100 60 20
DR–
K: Overlap factor, preset in the PocketOverlap machine parameter
R: Cutter radius