Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

Procedure for Optimizing Machine Parameters
Increment MP6230
(e.g. by 10 mm/min)
no
[1] Keep a note of the maximum
feedrate that is possible in the
worst axis.
[2] If the override potentiometers
are already at 150% and the axis
still moves with a steady speed,
increase MP6210.
[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 (MP6230).
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 optimization program and operate
the external START KEY.
Machine runs, digitizing starts.
Increase the feedrate [1] with the override potentiometer
[2] until X nominal command attains.
maximum value and shows only minor voltage
dips (axis should just still traverse at even
speed).
U[V]
Umax
Are oscillations in
normal direction visible
(stylus tip is seen to lift off
workpiece surface)?
Decrement MP6230 again
(e.g. by 10 mm/min)
Repeat optimizing sequence for Y axis.
Switch the NC program to scanning
direction Y [3].
8/95 TNC 360 9 Touch Probe 4-163
yes
t[s]
Repeat optimizing sequence for Z axis.
Change the scanning range accordingly [3].
Pay particular attention to vertical face.