Detailed description
2.4 Frames
Basic logic functions: Axes, coordinate systems, frames (K2)
120
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
the plane surrounded by the other and the third axis. This definition ensures that, in the case
that one of the two programmed angles is towards zero, the defined plane enters the plane,
which is created if only one axis is programmed (e.g., with
ROT
or
AROT
).
The diagram shows an example where X and Y are programmed. Y here gives the angle, by
which the X axis must rotate around the Y axis to bring the X axis to the line of intersection
formed by the oblique plane and the XZ plane. The same principle applies for the
programmed value of X.
Note
In the shown position of the oblique plane the value of Y is positive, that of X on the other
hand negative.
The specification of the solid angle does not define the orientation of the twodimensional
coordinate system within the plane (i.e., the angle of rotation around the surface normal
vector). The position of the coordinate system is thus determined so that the rotated first axis
lies in the plane, which is surrounded by the first and third axes of the nonrotated coordinate
system.
This means that
•
When programming X and Y the new X-axis lies in the old ZX plane.
•
When programming Z and X the new Z-axis lies in the old YZ plane.
•
When programming Y and Z the new Y-axis lies in the old XY plane.
If the required coordinate system does not correspond to this basic setting, then an
additional rotation must be performed with
AROT...
.
On programming the solid angles, they are converted into the equivalent RPY or Euler
angles, depending on machine data
MD10600 $MN_FRAME_ANGLE_INPUT_MODE
.
These then appear also in the display.
Frame rotation in tool direction
With the language command
TOFRAME
, which also existed in older software versions, it is
possible to define a frame whose Z axis points in the tool direction.
An already programmed frame is then overwritten by a frame, which describes a pure
rotation. Any zero offsets, mirrorings or scalings existing in the previously active frame are
deleted.
This response is sometimes interfering. It is often particularly practical to retain a zero offset,
with which the reference point in the workpiece is defined.
The language command
TOROT
is then also used. This command overwrites only the
rotation component in the programmed frame and leaves the remaining components
unchanged. The rotation defined with
TOROT
is the same as that defined with
TOFRAME
.
TOROT
is, like
TOFRAME
, independent of the availability of an orientational toolholder. This
language command is also especially useful for 5-axis transformations.
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
