Key functions for 5-axis machining
3.5
© Siemens AG All rights reserved. SINUMERIK, Manual, 5-axis machining
54
Surface normal vector (A4= B4= C4=) (A5= B5= C5=)
Explanation of the commands
Surface normal vector
G1 X Y Z A4= B4= C4= Programming the surface normal vector at start of block.
This information is used by CUT3DF, for example, for the purpose
of 5-axis machining.
When used in conjunction with LEAD and TILT, this provides a
further option for tool orientation programming. In this context, the
LEAD and TILT angles relate to normal vectors A4 B4 C4. With
ORIPATH, the orientation vectors are programmed relative to the
normal vectors with LEAD and TILT.
G1 X Y Z A5= B5= C5= Programming the surface normal vector at end of block.
The surface normal vector is perpendicular to
the machining surface. It defines the path cur-
vature. It is necessary for tool orientation with
ORIPATH (LEAD, TILT) as well as for face
radius correction with CUT3DF.
If only the start vector is programmed in a
block (A4, B4, C4) , this means that the
programmed surface normal vector will remain
constant throughout the entire block.
If only the end vector is programmed (A5, B5,
C5) , then large circle interpolation is per-
formed between the end value of the previous
block and the programmed end value.
If both start and end vectors are programmed,
interpolation according to the large circle prin-
ciple is also performed between the two direc-
tions.
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