In helical milling program we are widening diameter of hole up to 31.5mm . Lets see how to make program for helical milling ;
O1234
N10 M06 T0606 ;
N20 G91 G54 G21 G17 G80 G43 ;
N30 M03 S1200 ;
N40 G00 X0.0 Y0.0 ‘
N50 G00 Z10 M08 ;
N60 G01 Z0 G95 F0.2 ;
N70 G01 X15.5 G41 ;
N80 G03 I= -15.75 Z= IC (-4) ;
N90 G03 I= -15.75 Z= IC (-4) ;
N100 G03 I= -15.75 Z= IC (-4) ;
N110 G03 I= -15.75 Z= IC (-4) ;
N120 G03 I= -15.75 Z= IC (-4) ;
N130 G03 I= -15.75 Z= IC (-4) ;
N140 G03 I= -15.75 Z= IC (-4) ;
N150 G01 X0.0 G40 ;
N160 G00 Z50 ;
N170 M09 M