HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 60)

60 Using fixed cycles
2.2
Pr
ogr
am
def
aults
for
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 at which 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
The parameters are valid for all fixed cycles with numbers
greater than 2xx.
The parameters apply to the drilling, tapping and thread
milling cycles 200 to 209, 240, and 262 to 267.