HEIDENHAIN iTNC 530 (340 49x-05) Cycle programming - Manual (Page 448)

448 Touch Probe Cycles: Automatic Kinematics Measurement
1
8
.1 Kinematic Measur
ement with TS
T
ouc
h Pr
obes (Option KinematicsOpt)
18.1 Kinematic Measurement with
TS Touch Probes (Option
KinematicsOpt)
Fundamentals
Accuracy requirements are becoming increasingly stringent,
particularly in the area of 5-axis machining. Complex parts are required
to be manufactured with precision and reproducible accuracy even
over long periods.
Some of the reasons for inaccuracy in multi-axis machining are
deviations between the kinematic model saved in the control (see
figure
1 at right), and the kinematic conditions actually existing on the
machine (see figure 2 at right). When the rotary axes are positioned,
these deviations cause inaccuracy of the workpiece (see figure 3 at
right). It is therefore necessary for the model to approach reality as
closely as possible.
The new TNC function KinematicsOpt is an important component
that helps you to really fulfill these complex requirements: A 3-D touch
probe cycle measures the rotary axes on your machine fully
automatically, regardless of whether they are in the form of tables or
spindle heads. A calibration ball is fixed at any position on the machine
table, and measured with a resolution that you define. You simply
define for each rotary axis the area that you want to measure.
From the measured values, the TNC calculates the static tilting
accuracy. The software minimizes the positioning error arising from
the tilting movements and, at the end of the measurement process,
automatically saves the machine geometry in the respective machine
constants of the kinematic table.
Overview
The TNC offers cycles that enable you to automatically save, check
and optimize the machine kinematics:
1
2
3
Cycle Soft key Page
450 SAVE KINEMATICS: Automatically
saving and restoring kinematic
configurations Page 450
451 MEASURE KINEMATICS:
Automatically checking or optimizing the
machine kinematics Page 452
452 PRESET COMPENSATION:
Automatically checking or optimizing the
machine kinematics Page 466