HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 200)

8 Programming: Cycles 184
8.4 Cy
cles f
or Milling P
o
c
k
ets,
St
uds and Slots
X
Y
Q217
Q216
Q248
Q245
Q219
Q244
ú Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface.
ú Depth Q201 (incremental value): Distance between
workpiece surface and bottom of slot
ú Feed rate for milling Q207: Traversing speed of the
tool in mm/min while milling.
ú Plunging depth Q202 (incremental value): Total extent
by which the tool is fed in the tool axis during a
reciprocating movement.
ú Machining operation (0/1/2) Q215:
Define the extent of machining:
0: Roughing and finishing
1: Roughing only
2: Finishing only
ú Workpiece SURFACE COORDINATE Q203 (absolute
value): Coordinate of the workpiece surface
ú 2nd set-up clearance Q204 (incremental value): Z
coordinate at which no collision between tool and
workpiece (clamping devices) can occur.
ú Center in 1st axis Q216 (absolute value): Center of the
slot in the main axis of the working plane
ú Center in 2nd axis Q217 (absolute value): Center of the
slot in the secondary axis of the working plane
ú Pitch circle diameter Q244: Enter the diameter of the
pitch circle
ú Second side length Q219: Enter the slot width. If you
enter a slot width that equals the tool diameter, the
TNC will carry out the roughing process only (slot
milling).
ú Starting angle Q245 (absolute value): Enter the polar
angle of the starting point.
ú Angular length Q248 (incremental value): Enter the
angular length of the slot
Example NC block:
N52 G211 Q200=2 Q201=-20 Q207=500
Q202=5 Q215=0 Q203=+0 Q204=50
Q216=+50 Q217=+50 Q244=80 Q219=12
Q245=+45 Q248=90*
Kkap8.pm6 29.06.2006, 08:06 184