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

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HEIDENHAIN TNC 426, TNC 430

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5.3 T

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pes of Digitizing

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Max. probe point interval

(M, S): Maximum spacing between

consecutive digitized positions. The TNC also accounts for
important points that define the contour of the model, for example
at inside corners. Input range: 0.02 to 20 mm (M), 0.02 to 5 mm (S)

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Tolerance

(M): The TNC stores only those digitized positions whose

distance from a straight line defined by the last two probe points
exceeds the programmed tolerance. This ensures a high density of
digitized positions for contours with sharply curved surfaces, and as
low a density as possible for contours with flat surfaces. An input
value of zero means that the digitized positions are output in the
programmed probe point interval. Input range: 0 to 0.9999 mm

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Feed rate reduction at edges

(M): Answer the dialog question

with NO ENT. The TNC enters a value automatically.

The feed rate reduction is effective only if the number of
points at which the feed rate must be reduced does not
exceed 1000 points in a digitizing line.