HEIDENHAIN TNC 128 (77184x-01) - Manual (Page 464)

464 Touch probe cycles
20.1 Gener
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ation about t
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20.1 General information about
touch probe cycles
Method of function
Whenever the TNC runs a touch probe cycle, the 3-D touch probe
approaches the workpiece in one linear axis. The machine tool builder
determines the probing feed rate in a machine parameter (see "Before
You Start Working with Touch Probe Cycles" later in this chapter).
When the probe stylus contacts the workpiece,
 the 3-D touch probe transmits a signal to the TNC: the coordinates
of the probed position are stored,
 the touch probe stops moving, and
 returns to its starting position at rapid traverse.
If the stylus is not deflected within a defined distance, the TNC
displays an error message (distance: DIST from touch probe table).
Touch probe cycles in the Manual Operation and
El. Handwheel modes
In the Manual Operation and El. Handwheel modes, the TNC provides
touch probe cycles that allow you to:
 Calibrate the touch probe
 Set datums
The manual touch probe cycles are described in the "Manual operation
and setup" chapter (see "Using the 3-D touch probe" on page 291).
HEIDENHAIN only gives warranty for the function of the
probing cycles if HEIDENHAIN touch probes are used.
The TNC must be specially prepared by the machine tool
builder for the use of a 3-D touch probe. The machine
manual provides further information.
The touch probe cycles are available only with the Touch
probe function software option (option number 17). If you
are using a HEIDENHAIN touch probe, this option is
available automatically.
Y
X
Z
F
F MAX
F