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Global data valid everywhere, Global data for drilling operations – HEIDENHAIN iTNC 530 (340 49x-04) User Manual

Page 344

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344

8 Programming: Cycles

8.2 Pr

ogr

am Def

a

ults f

o

r Mac

h

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.