HEIDENHAIN TNC 320 (77185x-01) Cycle programming - Manual (Page 169)

SL Cycles 7.1
7
TNC 320 | User's Manual Cycle Programming | 3/2014
169
Characteristics of the fixed cycles
The TNC automatically positions the tool to the set-up clearance
before each cycle–position the tool to a safe position before the
cycle call.
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 in 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.
...
99 END PGM SL2 MM
Overview
Cycle Soft key Page
14 CONTOUR GEOMETRY (essential) 170
20 CONTOUR DATA (essential) 174
21 PILOT DRILLING (optional) 176
22 ROUGH-OUT (essential) 178
23 FLOOR FINISHING (optional) 181
24 SIDE FINISHING (optional) 182
Enhanced cycles:
Cycle Soft key Page
25 CONTOUR TRAIN 184