User's Manual TNC 360 (from 259 900-11) - heidenhain

8 Cycles
8.3 SL Cycles
SL Cycles: Overlapping contours
8-20
Pockets and islands can be overlapped to form a new contour. The area of
a pocket can thus be enlarged by another pocket or reduced by an island.
Starting position
Machining begins at the starting position of the first pocket in cycle 14
CONTOUR GEOMETRY. The starting position should be located as far as
possible from the overlapping contours.
Example: Overlapping pockets
Machining begins with the first contour label defined in block 6. The first
pocket must begin outside the second pocket.
Inside machining with a center-cut end mill
(ISO 1641), tool radius 3 mm.
Coordinates of the circle centers:
1 X = 35 mm Y = 50 mm
2 X = 65 mm Y = 50 mm
Circle radii
R = 25 mm
Setup clearance: 2 mm
Milling depth: 10 mm
Pecking depth: 5 mm
Feed rate for pecking: 500 mm/min
Finishing allowance: 0
Rough-out angle: 0
Milling feed rate: 500 mm/min
Y
50
R25
Y
Y
Z
Z
Fig. 8.16: Example for overlapping contours
R25
1 2
35 65
X
X
X
Continued...
TNC 360