HEIDENHAIN iTNC 530 (340 422) ISO programming - Manual (Page 233)

HEIDENHAIN iTNC 530 233
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g DRILLING (Cycle G200)
1 The TNC positions the tool in the tool axis at rapid traverse to the
setup clearance above the workpiece surface.
2 The tool drills to the first plunging depth at the programmed feed
rate F.
3 The TNC returns the tool at rapid traverse to the setup clearance,
dwells there (if a dwell time was entered), and then moves at rapid
traverse to the setup clearance above the first plunging depth.
4 The tool then advances with another infeed at the programmed
feed rate F.
5 The TNC repeats this process (2 to 4) until the programmed depth
is reached.
6 The tool is retracted from the hole bottom to the set-up clearance
or, if programmed, to the 2nd set-up clearance at rapid traverse.
X
Z
Q200
Q201
Q206
Q202
Q210
Q203
Q204
Before programming, note the following:
Program a positioning block for the starting point (hole
center) in the working plane with radius compensation
G40.
The algebraic sign for the cycle parameter DEPTH
determines the working direction. If you program
DEPTH = 0, the cycle will not be executed.
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!