SINUMERIK THREADING CYCLE -97 ( SIMPLE EXTERNAL THREADING PROGRAM )


MAIN PROGRAM

HARSH.MPF
N01   G90  G71  G94  F50  ;
N02   G75  X0  Z0 ;
N03   M06  T02  D01 ;
N04   M03  S600 ;
N05   M07  ;
N06   G00   X30  Z1 ;
N07  CYCLE 97 [ 2 , 0 , 0, -20 ,20 , 20, 0 ,0 , 1.226 , 0.05 , 30 , 0 , 12 , 2 ,
3, 1 , _]
N08   G75  X0  Z0 ;
N09   M05 ;
N10   M09 ;
N11    M30 ;

DISCRIPTION OF PROGRAM
(Note : In these cycle there is no need of sub program )
MAIN  PROGRAM
HARSH .MPF – Main program name
N02 Referance point command where tool at X0 Z0 .
N03Tool change command , select tool no 2 and offset diameter 01 .
N04Spindle onclockwise at speed 600 rpm.
N05 Coolant ON .
N06Rapidcommand to near to the job and ready for machining .

N07 – For better understanding refer this link – THREADING CYCLE-97 DATA
          This  parameter value directly put into computer .Fig shows 20M X 2 , it means given is                      20mm major diameter and 2 pitch  
      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 20 .
      DM1 – Diameter of thread at starting point is 20 .
      DM2 – Diameter of thread at end point is also 20 .
      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  , 2, but we never take offset in these program hence we                        used 0 .   
      NRC – No. of rough cut , its deapends 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 external                               thread No. 3.
      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 .


SINUMERIK THREADING CYCLE -97 ( SIMPLE EXTERNAL THREADING PROGRAM ) SINUMERIK THREADING CYCLE -97 ( SIMPLE EXTERNAL THREADING PROGRAM ) Reviewed by HARSHAL DHAWAS on February 25, 2018 Rating: 5
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