HEIDENHAIN TNC 640, User Manual, Page: 528 / 948

Special Functions | Global Program Settings (option 44)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
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: "Workpiece coordinate system W-CS",
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
before the machining plane is tilted
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.