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

B-63324EN/03 PROGRAMMING 4.INTERPOLATION FUNCIONS
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4.12 INVOLUTE INTERPOLATION (G02.2,G03.2)
Involute curve machining can be performed by using involute
interpolation. Involute interpolation ensures continuous pulse
distribution even in high-speed operation in small blocks, thus enabling
smooth and high-speed machining. Furthermore, machining tapes can
be created easily and efficiently, reducing the required length of tape.
Format
Involute interpolation on the Xp-Yp plane
G17 G02.2 Xp_ Yp_ I_ J_ R_ F_ ;
G17 G03.2 Xp_ Yp_ I_ J_ R_ F_ ;
Involute interpolation on the Zp-Xp plane
G18 G02.2 Zp_ Xp_ K_ I_ R_ F_ ;
G18 G03.2 Zp_ Xp_ K_ I_ R_ F_ ;
Involute interpolation on the Yp-Zp plane
G19 G02.2 Yp_ Zp_ J_ K_ R_ F_ ;
G19 G03.2 Yp_ Zp_ J_ K_ R_ F_ ;
Where,
G02.2 : Involute interpolation (clockwise)
G03.2 : Involute interpolation (counterclockwise)
G17/G18/G19: Xp-Yp / Zp-Xp / Yp-Zp plane selection
Xp_: X-axis or a parallel axis (set in parameter No. 1022)
Yp_: Y-axis or a parallel axis (set in parameter No. 1022)
Zp_: Z-axis or a parallel axis (set in parameter No. 1022)
I_,J_,K_ : Center of the base circle for an involute
curve viewed from the start point
R_ : Base circle radius
F_ : Cutting feedrate

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