HEIDENHAIN TNC 426 CB, Technical Manual

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6 – 80 HEIDENHAIN Technical Manual TNC 426, TNC 430
Spatial angle C
≠
0 On machines with C tables and tool axis Z, the spatial angle C
≠
0 (with A = 0
and B = 0) can be realized through a rotation of the coordinate system or a
rotation of the table:
7 7 7 7 With MP7500 bit 6 = 0, the spatial angle C is realized through a rotation of
the coordinate system.
With MP7500 bit 6 = 1, the spatial angle C is realized through a rotation of
the table. At the same time, the angle is saved in Q122. This makes it
possible, for example, to machine a workpiece by always using the same
axis for paraxial linear blocks in the X/Y plane.
Conditions and
constraints Conditions:
n
The display position in the status window is referenced to the tilted
coordinate system.
n
In the combination of coordinate transformation cycles the sequence of
activation must agree with the sequence of deactivation.
n
The tool radius compensation in the working plane and the tool length
compensation parallel to the tool axis is active.
n
For machining with tilting tables, the coordinate system remains parallel to
the machine coordinate system.
Constraints:
n
PLC positioning movements are always parallel to an axis of the machine
coordinate system (Cycle 19 has no influence)
n
A datum shift via PLC also works with the “tilted working plane” function.
n
The axis designations for the tilting axes are limited to A, B, C. Each
designation can be used only once.
n
Starting with NC software 280 476-xx, it is possible to position with M91 or
M92 when Cycle 19 “tilted working plane” is active.
If the position of the working plane is entered, only the following swivel axes
(with tool axis Z) are permissible:
n
Double swivel head 45°: Axis sequence A fixed; B or C variable; A fixed;
B or C variable
n
Rectangular double swivel head: Axis sequence A or B variable; C variable
n
Rotary or tilting table: Axis sequence C variable; A or B variable
n
Swivel head and rotary table: Axis sequence A or B variable; C variable
n
Swivel head 45°: Axis sequence C variable; A fixed; B variable; A fixed
n
Rectangular double swivel head as of NC software 280 472-01:
Axis sequence A variable; B variable
n
Universal swivel head as of NC software 280 476-01: axis sequence A fixed;
B –90°; A variable; B +90°; A fixed; C variable
n
Swivel head and rotary table as of NC software 280 476-21: axis sequence
B variable, A variable
With tool axis Y:
n
Rotary and swivel table as of NC software 280 474-04: axis sequence B
variable; A variable
n
Double swivel head 45° and rotary table as of NC software 280 474-05: axis
sequence A fixed; C variable; A fixed; B variable
n
Rotary and swivel table as of NC software 280 474-05: axis sequence C
variable; A variable