HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 484)

484 Touch probe cycles: automatic kinematics measurement
18
.4
MEA
S
URE
KINEMA
TICS
(Cy
cle
451,
DIN/ISO:
G451;
Option)
Choice of number of measuring points
To save time, you can make a rough optimization with a small number
of measuring points (1-2).
You then make a fine optimization with a medium number of
measuring points (recommended value = 4). Higher numbers of
measuring points do not usually improve the results. Ideally, you
should distribute the measuring points evenly over the tilting range of
the axis.
This is why you should measure an axis with a tilting range of 0° to
360° at three measuring points, namely at 90°, 180° and 270°.
If you want to check the accuracy accordingly, you can enter a higher
number of measuring points in the Check mode.
Choice of the calibration sphere position on the
machine table
In principle, you can fix the calibration sphere to any accessible
position on the machine table and also on fixtures or workpieces. The
following factors can positively influence the result of measurement:
 On machines with rotary tables/tilting tables:
Clamp the calibration sphere as far as possible away from the center
of rotation.
 Machines with large traverse:
Clamp the calibration sphere as closely as possible to the position
intended for subsequent machining.
You must not define a measuring point at 0° or 360°.
These positions do not provide any metrologically relevant
data and lead to an error message!