Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 PROGRAMMING 14.COMPENSATION FUNCTION
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:
Tool center path
:
Programmed tool path
Example(1)-3
Example(1)-4
Actual tool
Reference tool
Actual tool
Reference tool
Workpiece
Workpiece
: Tool offcet value
Fig.14.14.1 (f) Operation in the compensation mode (1)-3, 4
(2) When the tool moves at a corner, the feedrate of the previous
block is used if the corner is positioned before a single-block stop
point; if the corner is after a single-block stop point, the feedrate
of the next block is used.
: Tool center path
: Programmed path
Example(2)-1
F100
Tool
Program(2)-1
:
N1 G90 G41.2 Xp Yp Zp Bp Cp D1 ;
N2 G01 Xq Yq Zq F100 ;
N3 Xr Yr Zr F200 ;
:
N2
N3
P’
P
Q1’
R’
R
Q
Q2’ (Single block stop point)
Fig.14.14.1 (g) Operation in the compensation mode (2)
In the above example, the single block stop point of N2 is Q2’, so
that the feedrates along paths P’-Q1’ and Q1’-Q2’ are the same,
namely, F100.
(3) When a command is specified to make the tool retrace the path
specified in the previous block, the tool path can match the locus
of the previous block by changing the G code to change the offset
direction. If the G code is left unchanged, the operation shown in
Example (3)-2 results :

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