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HEIDENHAIN iTNC 530 (340 49x-04) User Manual

Page 435

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HEIDENHAIN iTNC 530

435

8.6 Cy

cles f

o

r Milling P

o

c

k

ets, St

uds and Slots

Finished part diameter

Q223: Diameter of the

completely machined stud.

Workpiece blank diameter

Q222: Diameter of the

workpiece blank. Enter the workpiece blank diameter
greater than the finished diameter. The TNC performs
multiple stepovers if the difference between the
workpiece blank diameter and finished diameter is
greater than the permitted stepover (tool radius
multiplied by path overlap Q370). The TNC always
calculates a constant stepover.

Finishing allowance for side

Q368 (incremental

value): Finishing allowance in the working plane.

Feed rate for milling

Q207: Traversing speed of the

tool in mm/min while milling.

Climb or up-cut

Q351: Type of milling operation with

M3:
+1 = climb milling
–1 = up-cut milling

Enter in MP7441 bit 2 whether the TNC should output an
error message (bit 2=1) or not (bit 2=0) if a positive depth
is entered.

Danger of collision!

Keep in mind that the TNC reverses the calculation for pre-
positioning when a positive depth is entered. This
means that the tool moves at rapid traverse in the tool axis
at safety clearance below the workpiece surface!

Leave enough room next to the stud for the approach
motion. Minimum: tool diameter + 2 mm

X

Y

Q223

Q207

Q222

Q368

X

Y

k

Q351= +1

Q351= –1