HEIDENHAIN TNC 640, User Manual, Page: 529 / 948

Special Functions | Global Program Settings (option 44)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
529
Control display
Like a shift in the NC program, the
Mirroring (W-CS)
of the
Global Program Settings
function has no effect on the actual
position display.
The general status display shows the following icons:
Mirroring in the NC program active
Mirroring (W-CS)
function active (default icon of the
Global Program Settings
function)
The values
Mirroring (W-CS)
values are displayed on the
GS
tab
of the additional status display, the values from the NC program
on the
TRANS
tab.
Application example
Mirroring the CAM output:
CAM output for right mirror cap
The workpiece datum is centered on the workpiece blank
NC program set to the center of the ball-nose cutter and
TCPM
function with spatial angles
The left mirror cap is to be machined (X axis mirroring)
Open the
Global Program Settings
function
Activate
Mirroring (W-CS)
with marked X
Run the NC program
The control takes the
Mirroring (W-CS)
value for the X axis and
the required rotary axes into account.
Shift (mW-CS)
Refer to your machine manual.
Your machine tool builder can also disable individual
settings possibilities within the
Global Program Settings
function.
The Shift (mW-CS) option of the
Global Program Settings
function
provides a coordinate transformation in the mW-CS (modified
workpiece coordinate system).
The W-CS workpiece coordinate system is modified with active
Shift (W-CS)
or active
Mirroring (W-CS)
. Without this preceding
coordinate transformation, the Shift (mW-CS) option would be
effective directly in the W-CS workpiece coordinate system and
would thus be identical to
Shift (W-CS)
.
Further information: "Workpiece coordinate system W-CS",
page 151
The Shift (mW-CS) option in the
Global Program Settings
function
takes effect on an axis-by-axis basis. The value is added to the shift
that takes place
before the machining plane is tilted as defined in
the NC program (e.g. Cycle 7
DATUM SHIFT
), the same way as it is
done for an active
Shift (W-CS)
.