HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 57)

Program defaults for cycles 2.2
2
TNC 640 | User's Manual Cycle Programming | 5/2013
57
Global data for milling operations with contour cycles
Set-up clearance: Distance between tool tip and workpiece
surface for automated approach of the cycle start position in the
tool axis
Clearance height: Absolute height at which the tool cannot
collide with the workpiece (for intermediate positioning and
retraction at the end of the cycle)
Overlap factor: The tool radius multiplied by the overlap factor
equals the lateral stepover
Climb or up-cut: Select the type of milling
The parameters apply to SL cycles 20, 22, 23, 24 and
25.
Global data for positioning behavior
Positioning behavior: Retraction in the tool axis at the end of
the machining step: Return to the 2nd set-up clearance or to the
position at the beginning of the unit
The parameters apply to each fixed cycle that you call
with the
CYCL CALL PAT function.
Global data for probing functions
Set-up clearance: Distance between stylus and workpiece
surface for automated approach of the probing position
Clearance height: The coordinate in the touch probe axis to
which the TNC traverses the touch probe between measuring
points, if the
Move to clearance height option is activated
Move to clearance height: Select whether the TNC moves
the touch probe to the set-up clearance or clearance height
between the measuring points
Applies to all Touch Probe Cycles 4xx.