HEIDENHAIN TNC 620 (73498x-01) ISO programming - Manual (Page 487)

HEIDENHAIN TNC 620 487
SLII Contour Train Cycle 25: APPR/DEP
blocks in contour definition Not allowed, machining of closed
contours is more coherent APPR /DEP blocks are allowed as contour
elements
General cylinder surface machining:
„ Contour definition „ With X/Y coordinates, independent of
machine type „ Machine-dependent, with existing
rotary axes
„ Offset definition on cylinder surface „ With datum shift in X/Y, independent
of machine type „ Machine-dependent datum shift in
rotary axes
„ Offset definition for basic rotation „ Function available „ Function not available
„ Circle programming with C/CC „ Function available „ Function not available
„ APPR /DEP blocks in contour definition „ Function not available „ Function available
Cylinder surface machining with
Cycle 28:
„ Complete roughing-out of slot „ Function available „ Function not available
„ Definable tolerance „ Function available „ Function available
Cylinder surface machining with
Cycle 29 Direct plunging to contour of ridge Circular approach to contour of ridge
Cycles 25x for pockets, studs and
slots:
„ Plunging movements
In limit ranges (geometrical conditions of
tool/contour) error messages are
triggered if plunging movements lead to
unreasonable/critical behavior In limit ranges (geometrical conditions of
tool/contour), vertical plunging is used if
required
„ Rough out strategy Cycle 251
The lateral infeed with rough out
movements is calculated according to
the ratio of "longer side/shorter side."
With longer pockets this means a longer
run-time. The lateral proportioning of cuts is
calculated with the maximum
overlapping factor.
Function TNC 620 iTNC 530