HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 189)

173 HEIDENHAIN TNC 410, TNC 426, TNC 430
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 pocket
ú Feed rate for plunging Q206: Traversing speed of the
tool in mm/min when moving to depth. If you are
plunge-cutting into the material, enter a low value; if
you have already cleared the pocket, enter a higher
feed rate.
ú Plunging depth Q202 (incremental value):
Infeed per cut; enter a value greater than 0.
ú Feed rate for milling Q207: Traversing speed of the
tool in mm/min while milling.
ú Workpiece surface coordinate Q203 (absolute value):
Coordinate of the workpiece surface
ú 2nd set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
ú Center in 1st axis Q216 (absolute value): Center of the
pocket in the main axis of the working plane
ú Center in 2nd axis Q217 (absolute value): Center of the
pocket in the secondary axis of the working plane
ú First side length Q218 (incremental value): Pocket
length, parallel to the main axis of the working plane
ú Second side length Q219 (incremental value): Pocket
length, parallel to the secondary axis of the working
plane
ú Corner radius Q220: Radius of the pocket corner If you
make no entry here, the TNC assumes that the corner
radius is equal to the tool radius.
ú Allowance in 1st axis Q221 (incremental value):
Allowance in the main axis of the working plane
referenced to the length of the pocket.
X
Z
Q200
Q201
Q206
Q202
Q203
Q204
8.4 Cy
cles f
or Milling P
o
c
k
ets,
St
uds and Slots
X
Y
Q219
Q218
Q217
Q216
Q207
Q221
Q220
Example NC block:
N34 G212 Q200=2 Q201=-20 Q206=150
Q202=5 Q207=500 Q203=+0 Q204=50
Q216=+50 Q217=+50 Q218=80 Q219=60
Q220=5 Q221=0*
Kkap8.pm6 29.06.2006, 08:06 173