Inside Corners - HEIDENHAIN TNC 415 Technical Manual

Inside Corners

Maximum stylus
deflection MP 6240
6
On inside corners, having probed the last point
scanning direction but changes direction because it cannot get clear. It then moves down the
resultant straight line until it either gets clear or hits one of the limits TRAVEL
The touch probe moves in inverse scanning direction to get clear. If the programmed probe point
interval PP.INT is too small for the probe to clear, it travels in negative direction by up to the value
of MP6240 (maximum stylus deflection). As soon as the touch probe is clear it returns to the
contour in the inverse travel direction. The new scanning direction is defined by the probed points
and . If the touch probe has failed to clear even after it has backed out by the value of MP6240
, the touch probe axis (e.g. Z) is cleared in the positive direction. If the stylus is still deflected after
it reaches the "clearance height" (see "Range" scanning cycle) the scanning sequence is aborted and
an error message is displayed.
4-184 TNC 407/TNC 415/TNC 425
Contour
5
4
3
1
2
the touch probe continues to oscillate in the same
9 Touch probe
or PP.INT.
01.98