HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 256)

256 Fixed cycles: contour pocket with contour formula
9.2
SL
cy
cles
with
simple
cont
our
fo
rm
ula
Characteristics of the fixed cycles
 The TNC automatically positions the tool to the set-up clearance
before a cycle.
 Each level of infeed depth is milled without interruptions since the
cutter traverses around islands instead of over them.
 The radius of "inside corners" can be programmed—the tool keeps
moving to prevent surface blemishes at inside corners (this applies
to the outermost pass in the Rough-out and Side Finishing cycles).
 The contour is approached on a tangential arc for side finishing.
 For floor finishing, the tool again approaches the workpiece on a
tangential arc (for spindle axis Z, for example, the arc may be in the
Z/X plane).
 The contour is machined throughout in either climb or up-cut milling.
The machining data (such as milling depth, finishing allowance and
set-up clearance) are entered as CONTOUR DATA in Cycle 20.
With Machine Parameter 7420 you can determine where
the tool is positioned at the end of Cycles 21 to 24.