HEIDENHAIN iTNC 530 (60642x-04) Cycle programming - Manual (Page 216)

216 Fixed Cycles: Contour Pocket, Contour Trains
7.
12 THREE-D CONT
OUR TRAIN (Cy
c
le 27
6, DIN/ISO:
G27
6
)
 Coarse roughing tool Q18 or QS18: Number or name
of the tool with which the TNC has already coarse-
roughed the contour. Press the TOOL NAME soft key
to switch to name input. The TNC automatically
inserts the closing quotation mark when you exit the
input field. If there was no coarse roughing, enter "0";
the TNC will then machine the contour to the
maximum extent that is possible with the active tool.
If you enter a number or a name, the TNC will only
machine the portion that could not be machined with
the coarse roughing tool. Input range 0 to 32767.9 if
a number is entered; maximum 32 characters if a
name is entered.
 Accepted residual material Q446: Thickness of the
residual material that is to be left unmachined by the
TNC. Default value: 0.01 mm Input range 0 to +9.999
 Maximum connection distance Q447: Maximum
distance between two areas to be fine-roughed,
between which the tool is to move at the machining
depth along the contour without a lift-off motion.
Input range 0 to 999
 Path extension Q448: Length by which the tool path
is extended at the start and end of the contour. The
TNC always extends the tool path in parallel to the
contour. Input range 0 to 99.999