HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 270)

270 8 Programming: Cycles
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.
 Milling depth 2 : 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
 Circular radius: Radius of the circular pocket
 Feed rate F: Traversing speed of the tool in the
working plane.
 Clockwise
DR +: Climb milling with M3
DR –: Up-cut milling with M3
Example: NC blocks
16 L Z+100 R0 FMAX
17 CYCL DEF 5.0 CIRCULAR POCKET
18 CYCL DEF 5.1 SETUP 2
19 CYCL DEF 5.2 DEPTH-12
20 CYCL DEF 5.3 PECKG 6 F80
21 CYCL DEF 5.4 RADIUS 35
22 CYCL DEF 5.5 F100 DR+
23 L X+60 Y+50 FMAX M3
24 L Z+2 FMAX M99
X
Y
DR+
R35
50
60
DR–