HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 220)

220
8.1 W
or
k
ing with Cy
cles
Cycles Overview
Group of cycles Soft key Page
Cycles for pecking, reaming, boring,
counterboring, tapping and thread milling 223
Cycles for milling pockets, studs and
slots 271
Cycles for producing point patterns, such
as circular or linear hole patterns 293
SL (Subcontour List) cycles which allow
the contour-parallel machining of
relatively complex contours consisting of
several overlapping subcontours,
cylinder surface interpolation 300
Cycles for face milling of flat or twisted
surfaces 331
Coordinate transformation cycles which
enable datum shift, rotation, mirror
image, enlarging and reducing for various
contours 344
Special cycles such as dwell time,
program call, oriented spindle stop and
tolerance 363
If you use indirect parameter assignments in fixed cycles
with numbers greater than 200 (e.g. Q210 = Q1), any
change in the assigned parameter (e.g. Q1) will have no
effect after the cycle definition. Define the cycle
parameter (e.g. Q210) directly in such cases.
If you define a feed-rate parameter for fixed cycles greater
than 200, then instead of entering a numerical value you
can use soft keys to assign the feed rate defined in the
TOOL CALL
block (FAUTO soft key), or rapid traverse (FMAX
soft key).
Note that, after a cycle definition, a change of the FAUTO
feed rate has no effect, because internally the TNC
assigns the feed rate from the TOOL CALL block when
processing the cycle definition.
If you want to delete a block that is part of a cycle, the TNC
asks you whether you want to delete the whole cycle.