HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles - Manual (Page 40)

28 3 Touch Probe Cycles for Automatic Workpiece Inspection
3.1 Measur
ing W
o
rk
piece Misalignment
3.1 Measuring Workpiece
Misalignment
Overview
The TNC provides five cycles that enable you to measure and
compensate workpiece misalignment. In addition, you can reset a
basic rotation with Cycle 404.
Characteristics common to all touch probe
cycles for measuring workpiece misalignment
For the cycles 400, 401 and 402 you can define through parameter
Q307 Default setting for basic rotation whether the
measurement result is to be corrected by a known angle a (see figure
at right). This enables you to measure the basic rotation against any
straight line
1 of the workpiece and to establish the reference to the
actual 0° direction 2 .
Cycle Soft key
400 BASIC ROTATION Automatic measurement
using two points. Compensation via basic
rotation.
401 ROT OF 2 HOLES Automatic measurement
using two holes. Compensation via basic
rotation.
402 ROT OF 2 STUDS Automatic measurement
using two studs. Compensation via basic
rotation.
403 ROT IN ROTARY AXIS Automatic
measurement using two points. Compensation
via basic rotation.
405 ROT IN C AXIS Automatic alignment of an
angular offset between a hole center and the
positive Y axis. Compensation via table rotation.
404 SET BASIC ROTATION Setting any basic
rotation
1 2