HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 312)

01.98
TNC 407/TNC 415/TNC 425 9 Touch probe 4-187
Procedure for optimizing machine parameters
Connect a storage oscilloscope to the nominal
command input of the servo amplifier for the
X axis.
In the
"PROGRAM RUN/FULL SEQUENCE"
mode, select OPTIDIGI program and operate
the external START KEY.
Machine runs, digitizing starts.
U[V]
Increase the feedrate [1] with the override
potentiometer until X nominal command attains.
maximum value and shows only minor voltage
dips (axis should just still traverse at even
speed).
Umax
t[s]
Decrement Mp6230 again
(e.g. by 10 mm/min)
Repeat optimizing sequence for Y axis.
Switch the NC program to scanning
direction Y [2].
Repeat optimizing sequence for Z axis.
Change the scanning range accordingly.
Pay particular attention to vertical face.
Increment MP6230
(e.g. by 10 mm/min)
yes
no
Are oscillations in
normal direction visible
(stylus tip is seen to lift off
workpiece surface)?
[1] Keep a note of the maximum
feedrate that is possible in the
worst axis.
[2] The optimizing sequence is
geared to the worst axis. This is
why the feedrate must not be further
increased with the override
potentiometer and normal feedrate.