HEIDENHAIN TNC 640, User Manual, Page: 153 / 948

Fundamentals, File Management | Fundamentals
4
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
153
Working plane coordinate system WPL-CS
The working plane coordinate system is a 3-D Cartesian coordinate
system.
The position and orientation of the working plane coordinate
system depend on the active transformations in the workpiece
coordinate system.
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 line of the preset table have a direct effect on the
working plane coordinate system with this assumption.
WPL-CS
W-CS
WPL-CS
In the working plane coordinate system the user defines the
position and orientation of the input coordinate system with use of
transformations.
The
Mill-Turning
function (option 50) additionally
provides the
OEM rotation
and
precession angle
transformations.
OEM rotation
is available only to the machine tool
builder and takes effect before the
precession angle
Precession angle
is defined in Cycles 800
ADJUST
XZ SYSTEM
, 801
RESET ROTARY COORDINATE
SYSTEM
and 880
GEAR HOBBING
, and takes effect
before the other transformations of the working
plane coordinate system
The active values of the two transformations (if not
equal to 0) are shown on the
POS
tab of the expanded
status display. Check the values also in milling mode
because any active transformations will also remain
active in that mode!
Refer to your machine manual.
Your machine tool builder can use the
OEM rotation
and
precession angle
transformations also without the
Mill-
Turning
function (option 50).
Transformations in the working plane coordinate system:
Cycle 7
DATUM SHIFT
Cycle 8
MIRROR IMAGE
Cycle 10
ROTATION
Cycle 11
SCALING
Cycle 26
AXIS-SPECIFIC SCALING
PLANE RELATIVE
I-CS
WPL-CS
I-CS