HEIDENHAIN iTNC 530 (340 49x-04) - Manual (Page 344)

344 8 Programming: Cycles
8.2 Pr
ogr
am Def
a
ults f
o
r Mac
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ining Cy
cles
Global data valid everywhere
 Set-up clearance: Distance between tool tip and workpiece
surface for automated approach of the cycle start position in the tool
axis.
 2nd set-up clearance: Position to which the TNC positions the tool
at the end of a machining step. The next machining position is
approached at this height in the machining plane.
 F positioning: Feed rate at which the TNC traverses the tool within
a cycle.
 F retraction: Feed rate with at the TNC retracts the tool.
Global data for drilling operations
 Retraction rate for chip breaking: Value by which the TNC
retracts the tool during chip breaking.
 Dwell time at depth: Time in seconds that the tool remains at the
hole bottom.
 Dwell time at top: Time in seconds that the tool remains at the
set-up clearance.
Global data for milling operations with pocket
cycles 25x
 Overlap factor: The tool radius multiplied by the overlap factor
equals the lateral stepover.
 Climb or up-cut: Select the type of milling.
 Plunging type: Plunge into the material helically, in a reciprocating
motion, or vertically.
The parameters are valid for all machining cycles with
numbers greater than 199.
The parameters apply to the milling, tapping and thread
milling cycles 200 to 209, 240, and 262 to 267.
The parameters apply to milling cycles 251 to 257.