Siemens sinumerik 840d Programming Manual page 242

Transformations
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7.3 Cylinder surface transformation: TRACYL
840D 840D
NCU 571 NCU 572
NCU 573
There are two types of cylinder surface coordinate
transformation:
• without groove side compensation
• with groove side compensation
Without groove side compensation:
The control transforms the programmed traversing
movements of the cylinder coordinate system into
the traversing movements of the real machine axes:
– Rotary axis
– Infeed axis perpendicular to the rotary axis
– Longitudinal axis parallel to the rotary axis
The linear axes are positioned perpendicular to each
other. The infeed axis intersects the rotary axis.
With groove side compensation:
Same kinematics as above, plus:
– Longitudinal axis parallel to the direction of the
circumference
The linear axes are positioned perpendicular to each
other.
The speed control provides defined limits for the
rotary movements.
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FM-NC 810D 840Di
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Machine coordinate system
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ASM
Machine coordinate system
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) − 04.00 Edition
08.97
ASM
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Z or ZM
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