Siemens SINUMERIK 840D Manual page 49

Key functions for 5-axis machining
3.5.3 TRAORI programming
There a numerous advantages to TRAORI programming. The program is independent of the tool
length and machine kinematics, the feedrate relates to the tool tip and movements for compen-
sating the movements of the rotary axes are performed automatically.
To achieve optimum cutting conditions when machining curved three-dimensional surfaces, the
tool's setting angle must be variable. This calls for at least one or two rotary axes in addition to
the three linear axes X, Y, and Z. The NC blocks are expanded by means of the orientation infor-
mation, e.g. A3, B3, C3 or A, B, and C.
TRAORI active
Programming
TRAORI(n)
TRAFOOF
Explanation of the commands
TRAORI
TRAORI(n)
n
TRAFOOF
TRAORI may reset the active work offset (WO), depending on the specific configuration.
Therefore, as a precaution you should program the work offset after the TRAORI com-
mand.
© Siemens AG All rights reserved. SINUMERIK, Manual, 5-axis machining
1
2
Activates the first configured orientation transformation
Activates the orientation transformation configured with n
The number of the transformation (n = 1 or 2), TRAORI(1) corre-
sponds to TRAORI
Deactivate transformation
When the transformation is enabled, the posi-
tional data (X, Y, Z) always relates to the tip of
the tool, TCP. Changing the position of the
rotary axes involved in the transformation
causes so many compensating movements of
the remaining machine axes that the position
of the tool tip remains unchanged.
Without 5-axis transformation
1
With 5-axis transformation
2
; Transformation activated
; Transformation deactivated
3.5
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