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

B-63324EN/03 APPENDIX D.NOMOGRAPHS
- 773 -
Analysis
The tool path shown in Fig. D.3 (b) is analyzed based on the following
conditions:
Feedrate is constant at both blocks before and after cornering.
The controller has a buffer register. (The error differs with the reading
speed of the tape reader, number of characters of the next block, etc.)
- Description of conditions and symbols
V
X1
= V cos φ
1
V
Y1
= V sin φ
1
V
X2
= V cos φ
2
V
Y2
= V sin φ
2
V : Feedrate at both blocks before and after cornering
V
X1
: X-axis component of feedrate of preceding block
V
Y1
: Y-axis component of feedrate of preceding block
V
X2
: X-axis component of feedrate of following block
V
Y2
: Y-axis component of feedrate of following block
θ : Corner angle
φ
1
: Angle formed by specified path direction of
preceding block and X-axis
φ
2
: Angle formed by specified path direction of
following block and X-axis
˘
V
VX1
VY1
φ1
VY2
VX2
φ2
V
Z
X
0
Fig. D.3(b) Example of tool path

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