CNC PROGRAMMING FOR STEP TURNING AND FACING OPERATION


       In following fig the dimension of billet diameter 25 mm and total length 50mm . In these cnc operation we will perform facing 10 mm and making two step turing whoes diameter 20 mm and 16 mm.




HARSH.MPF
N1   G90 G71 G94 F100 ;
N2   G75 X0 Z0/G28 X0 Z0 ;
N3   M06 T06 D01 ;
N4   M03 S1000 ;
N5   M07 ;
N6   G00 X27 Z2 ;
N7   G01 X25 Z0 ;
N8   G01 X25 Z-2 ;
N9   G01 X-1 Z-2 ;(Facing start cut 2 mm)
N10  G00 X27 Z-2 ;
N11  G00 X27 Z2 ;
N12  G01 X25 Z-2;
N13  G01 X25 Z-4 ;
N14  G01 X-1 Z-4 ;
N15 G00 X27 Z -4 ;
N16 G00 X27 Z2 ;
N17 G01 X25 Z2 ;
N18 G01 X25 Z-6 ;
N19 G01 X-1 Z-6 ;
N20 G00 X27 Z-6 ;
N21 G00 X27 Z2 ;
N22 G01 X25 Z2 ;
N23 G01 X25 Z-8 ;
N24 G01 X-1 Z-8 ;
N25 G00 X27 Z-8 ;
N26 G00 X27 Z2 ;
N27 G01 X25 Z2 ;
N28 G01 X25 Z-10 ;
N29 G01 X-1 Z-10 ; (Facing end)
N30  G00 X27 Z-10 ;
N31 G00 X27 Z2 ;
N32 G00 X25 Z2 ;
N33 G01 X25 Z-25 ; ( First step turning start CUT =0.5)
N34 G00 X27 Z-25 ;
N35 G00 X27 Z2 ;
N36 G01 X24 Z2 ;
N37 G01 X24 Z-25 ;
N38 G00 X27 Z-25 ;
N39 G00 X27 Z2 ;
N40 G01 X23 Z2 ;
N41 G01 X23 Z-25 ;
N42 G00 X27 Z2 ;
N43 G01 X22 Z2 ;
N44 G01 X22 Z-25 ;
N45 G00 X27 Z-25 ;
N46 G00 X27 Z2 ;
N47 G01 X21 Z2 ;
N48 G01 X21 Z-25 ;
N49 G00 X27 Z-25 ;
N50 G00 X27 Z2 ;
N51 G01 X20 Z2 ;
N52 G01 X20 Z-25 ;( First step turning  end )
N53 G00 X27 Z-25 ;
N54 G00 X27 Z2 ;
N55 G01 X19 Z2 ;
N56 G01 X19 Z-10 ;( Second step turning start cut = 0.5 )
N57 G00 X27 Z-10 ;
N58 G00 X27 Z2 ;
N59 G01 X18  Z2 ;
N60 G01 X18 Z-10 ;
N61 G00 X27 Z-10 ;
N62 G00 X27 Z2 ;
N63 G01 X17 Z2 ;
N64 G01 X17 Z-10 ;
N65 G00 X27 Z-10 ;
N66 G00 X27  Z2 ;
N67 G01 X16 Z2 ;
N68 G01 X16 Z-10 ;(End second step turning)
N69 G75 X0 Z0 ;
N70 M05 ;
N71 M09 ;
N72 M30 
for Description of mani program please


More examples..........!!!!
CNC PROGRAMMING FOR STEP TURNING AND FACING OPERATION CNC PROGRAMMING FOR STEP TURNING AND FACING OPERATION Reviewed by HARSHAL DHAWAS on February 18, 2018 Rating: 5
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