HEIDENHAIN TNC 620 User Manual page 117

Workpiece coordinate system W-CS
The workpiece coordinate system is a 3-D Cartesian coordinate
system. Its coordinate origin is the active reference point.
The position and orientation of the workpiece coordinate system
depend on the BASE TRANSFORM. values of the active preset line.
Soft key Application
The user determines the position and orientation
of the workpiece coordinate system by using a 3-
D touch probe for example. The control saves the
values determined related to the basic coordinate
system as BASE TRANSFORM. values in the preset
table.
Further Information: "Datum management with the preset table",
page 503
In the workpiece coordinate system the user defines the position
and orientation of the working plane coordinate system with use of
transformations.
Transformations in the workpiece coordinate system:
3D ROT functions
PLANE functions
Cycle 19 WORKING PLANE
Cycle 7 DATUM SHIFT
(shifting before tilting the working plane)
Cycle 8 MIRRORING
(mirroring before tilting the working plane)
The result of transformations built up on each other
depends on the programming sequence.
Without active transformations in the workpiece
coordinate system, the position and orientation of
the working plane coordinate system and workpiece
coordinate system are identical.
There are no transformations in the workpiece
coordinate system on 3-axis machine tools or with
pure 3-axis machining. The BASE TRANSFORM.
values of the active preset line are directly affective
on the working plane coordinate system with this
assumption.
Other transformations are of course possible in
the working plane coordinate system.
Information:
WPL-CS", page 118
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Further
"Working plane coordinate system
Fundamentals
W-CS
B-CS
W-CS
WPL -CS
WPL -CS
3
3.1
117