HEIDENHAIN TNC 410 ISO Programming - Manual (Page 221)

HEIDENHAIN TNC 410, TNC 426, TNC 430 195
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g Not available with TNC 410:
U U U U Angle for spindle orientation Q336 (absolute
value): Angle at which the TNC positions the tool
before it is plunged into or retracted from the bore
hole.
UNIVERSAL PECKING (Cycle G205, not TNC 410)
1 The TNC positions the tool in the tool axis at rapid traverse to the
programmed setup clearance above the workpiece surface.
2 The tool drills to the first plunging depth at the programmed feed
rate F.
3 If you have programmed chip breaking, the tool then retracts by
the entered retraction value. If you are working without chip
breaking, the tool is moved at rapid traverse to set-up clearance
and then at rapid traverse to the entered starting position above
the first plunging depth.
4 The tool then advances with another infeed at the programmed
feed rate. If programmed, the plunging depth is decreased after
each infeed by the decrement.
5 The TNC repeats this process (2 to 4) until the programmed total
hole depth is reached.
6 The tool remains at the hole bottom—if programmed—for the
entered dwell time to cut free, and then retracts to set-up
clearance at the retraction feed rate. If you have entered a 2nd set-
up clearance, the tool subsequently moves to that position in rapid
traverse.
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.