SINUMERIK CYCLE 97 ( SIMPLE INTERNAL THREADING CYCLE 97 FOR SIEMENS )

SINUMERIK CYCLE 97 ( SIMPLE INTERNAL THREADING CYCLE 97 FOR SIEMENS )

 MAIN PROGRAM

HARSH.MPF

N01  G90 G71 G94 F50 ;

N02  G28 X0 Z0 ;

N03  M06 T02 D01 ;

N04  M03 S600 ;

N05  M07 ;

N06  G00 X5 Z1 ;

N07  CYCLE 97 [ 2 , 0 , 0 , -30 , 10 , 10 , 0 , 0 , 1.226 , 0.05 , 30 , 0 ,12 , 2 , 3,  1 ,__ ]

N08  G28 X0  Z0 ;

N09  M05 ;

N10  M09 ;

N11  M30 ;                                                 More examples..........!!!!

DISCRIPTION OF PROGRAM

MAIN  PROGRAM

HARSH .MPF – Main program name

N01-   Program in absolute co-ordinate system ,  all dimension in mm , feed in mm permin , feed rate 100 .

N02 -  Referance point command where tool at X0 & Z0 .

N03 – Tool change command , select tool no 2 and offset diameter 01 .

N04 – Spindle onclockwise at speed 600 rpm.

N05 – Coolant ON .

N06 – Rapidcommand to near to the job and ready for machining .

N07 – For better understanding refer this link – THREADING CYCLE 97

          This  parameter value directly put into computer .Fig shows 20M X2 , it means given is 20mm                 diameter and pitch 2 .

      PIT -    PIT means pitch of threads is 2 mm .

      MPIT -  It is also pitch of thread but it takes whenever if not given ,it is standards threads pitch                        from 3.5  to 60 . To produce metric cylindrical threads . But in these program we don’t                        need MPIT , we take zero                                                                                  

      SPL –  Starting point of thread along  Z – axis , we take zero .

      FPL -  End point of thread along Z – axis , we take 30 .(Length)

      DM1 – Diameter of thread at starting point is 10 .

      DM2 – Diameter of thread at end point is also 10 .

      APP – How much tool away from when start operation , in these program no clearance is provide

                 hence we take zero .                 

      ROP -  After threading  ideal run path for Z axis , we take zero .

      TDEP – Thread depth , there is calculation  0.6134 x pitch ,

                        0.6134 X 2 = 1.226

      FAL – Finishing allowance for finish cut , we take 0.05 .

      IANG – Thread angle , if angle is 60 we take always half of the angle 30.

      NSP – Used for offset at starting  1⁰  , 2⁰  , but we naver take offset in these program hence we                       used 0 .    

      NRC – No. of rough cut , its deped on depth of cut . We take 12 .

      NID – Finishing cut at last . we take 2 .

      VARY – In computer panel there is four option for thread , generally we select for internal                                 threading  No. 4.      

                

     NUMTH – No of thread cut this is depend upon single start and multi-start . We take 1 .

     VRT   ___ (skip it )

                                         

N08 -  Referance point command where tool at X0 Z0 .

N09 – Coolant  OFF .

N10 – Main program end .