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3 t y pes of digitizing – HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles User Manual

Page 151

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HEIDENHAIN TNC 426, TNC 430

139

5.3 T

y

pes of Digitizing

CONTOUR LINES cycle with a rotary axis

Define the starting point in a linear axis and in a rotary axis. Define also
the order and direction of axis approach. The touch probe then
oscillates, for example in the X/C plane. See figure at lower right.

This method also works well for machines that have only two linear
axes (e.g. Z/X) and one rotary axis (e.g. C).

Example: NC blocks

X

Z

C

30 TCH PROBE 5.0 RANGE

31 TCH PROBE 5.1 PGM DIGIT: DATH

32 TCH PROBE 5.2 Z X-500 C+0 Z+0

33 TCH PROBE 5.3 X+50 C+360 Z+85

34 TCH PROBE 5.4 HEIGHT: 100

. . .

60 TCH PROBE 7.0 CONTOUR LINES

61 TCH PROBE 7.1 TIME: 250 X+80 C+0

62 TCH PROBE 7.2 ORDER X-/C+

63 TCH PROBE 7.3 TRAVEL 0.3 L.SPAC: +0.5 PP.INT: 0.5

The direction of rotation defined in Order is valid for all
levels (lines). The direction at the same time defines
whether the workpiece is then machined consistently in
up-cut or in climb milling.