HEIDENHAIN TNC 640 User Manual page 528

12
Application example
Determining the workpiece position using the handwheel:
Rework required on a tilted surface
Workpiece clamped and roughly oriented
Basic rotation and preset in the plane have been measured
Z coordinate must be defined with the handwheel due to the
presence of a free-form surface
Open the Global Program Settings function
Activate Handwheel superimp.: with the Workpiece (W-CS)
coordinate system
Determine (touch off) the workpiece surface using the
handwheel
Transfer the determined value to the Shift (W-CS) option by
pressing the CONFIRM VALUE soft key
Continue the NC program
Activate Handwheel superimp.: with the Workpiece (WPL-CS)
coordinate system
Determine the workpiece surface using the handwheel (touch
off for fine adjustment)
Continue the NC program
The control takes the Shift (W-CS) setting into account.
The control uses the current values from Handwheel
superimp.: in the Workpiece (WPL-CS) coordinate system.
Mirroring (W-CS)
Refer to your machine manual.
Your machine tool builder can also disable individual
settings possibilities within the Global Program Settings
function.
Axes that are not included in the kinematics description
are always grayed out and therefore not editable!
The Mirroring (W-CS) option in the Global Program Settings
function provides a coordinate transformation in the W-CS
workpiece coordinate system.
Further information:
page 151
The Mirroring (W-CS) option in the Global Program Settings
function takes effect on an axis-by-axis basis. The value is added to
the mirroring that takes place
as defined in the NC program (e.g. Cycle 8 MIRROR IMAGE).
If PLANE functions or the TCPM function are used with
spatial angles, the rotary axes are mirrored accordingly
along with the mirrored principal axes. This always
creates the same constellation, independent of the fact
whether the rotary axes were marked in the form or not.
With PLANE AXIAL, the mirroring of rotary axes is
irrelevant.
For the TCPM function with axis angles, all axes to be
mirrored must be marked explicitly in the form.
528
"Workpiece coordinate system W-CS",
before the machining plane is tilted
Special Functions | Global Program Settings (option 44)
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017