
09 00.11.21 K.Yamamuro Revised to edition 09
08 00.06.22 T.Watanabe Revised to edition 08 T.Endo
01 99.03.10 K.Yamamuro New-registered T.Endo
A-63537E
ED DATE DESIG.
DESCRIPTION 59/134
SHEET
TITLE
FANUC Series 16i/18 i -TA
Compound Machining Function
TITLE
CUST.DRAW.NO.
3.2 The compensation according to the angle of B-axis
If B axis is rotated when the measurement reference position of the offset is
different from B axis rotation center position, the measurement reference
position slides according to the angle of B axis.
At that time, CNC compensates the tool offset (T mode) and three-
dimensional coordinates conversion center coordinates (M mode).
3.2.1 Idea of basic coordinate system
OFSx
OFSz
Px
Pz
EXOFSx
EXOFSz
or
G54
Imaginary zero point.
B axis rotate center position
As shown in a left figure, the installation center
of the tool at the position of B=0° is made a
imaginary zero point.
Px: Distance along X-axis from imaginary
zero point to B axis rotate center
position
Pz: Distance along Z-axis from imaginary
zero point to B axis rotate center
position
OFSx: Offset value along X-axis
OFSz: Offset value along Z-axis
EXOFSx: External workpiece zero point offset
value along x axis
EXOFSz: External workpiece zero point offset
EXOFSz
or
G55