SINUMERIC CNC PROGRAMMING FOR COMBINE STOCK REMOVAL CYCLE & THREADING (COMBINE CYCLE 95 & 97 )

In this programming we performed turning , chamfering  and threading in single program

MAIN PROGRAM

HARSH .MPF

N01  G90 G71 G94 F100 ;

N02  G28 X0 Z0  ;

N03  M06 T06 D01 ;

N04  M03 S1000 ;

N05  M07 ;

N06  G00 X26 Z 2 ;

N07  Cycle 95 [ RAM , 0.2 ,0.1 ,0.1 , 0.1 , 200 , 300 , 200 , 9 ,_ ,_,_]

N08  G28 X0 Z0 ;

N09  M05 ;

N10  G94 F50 ;

N11  M06  T02  D01 ;

N12  M03  S600 ;

N13  G00   X25  Z2 ;

N14  CYCLE 97 [ 2 , 0 , 0, -40 ,20 , 20, 0 ,0 , 1.226 , 0.05 , 30 , 0 , 12 , 2 ,

3, 1 , _]                                              

N15  G28  X0  Z0 ;

N16  M05 ;

N17  M09 ;

N18  M30 ;

SUB  PROGRAM FOR CYCLE 95

RAM.SPF

N01  G01 X16 Z0 ;

N02  G01 X20 Z-2 ;

N03  G01 X20 Z-40 ;

N04  G01 X16 Z-40 ;

N05  G01 X16 Z-48 ;

N06  G01 X25 Z-48

N07  M17 ;

DISCRIPTION OF PROGRAM

MAIN PROGRAM

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 6 and offset diameter 01 .

N04 – Spindle onclockwise at speed 1000 rpm.

N05 – Coolant ON .

N06 – Rapid command to near to the job and ready for machining , where X25 & Z2 .

N07 – For understanding these  block we have to need knowledge about “stock removal  cycle data “

Refer this link – STOCK REMOVAL CYCLE DATA

In these cycle we performed   turning & chamfering  .

The following data directly put value in computer

     NPP – RAJ

     MID – 0.2

     FALZ – 0.1

     FALX – 0.1

     FAL -    0.1

     FF1 -   200

     FF2 –  300

     FF3 -   200

     VARI -EXT=9(Operation perform externally therefore we take  9, if internally we take 11)

     DT -   ___ (skip it)

     DAM -  ____(skip it)

     VRT -   ____(skip it)

N08 - Referance point command where tool at X0 Z0 .

N09 - Spindle stop .

N10-  Feed rate in mm per min , feed 50 .

N11-  Tool change command , select tool no 2 and offset diameter 01 .( threading tool)

N12 – Spindle on clockwise at speed 600 rpm.

N13 – Rapid command to near to the job and ready for machining , where  X25 & Z2 .

N14 – For better understanding refer this link –  THREADING CYCLE 97.

          This  parameter value directly put into computer .Fig shows 20M X2 , it means given is 20                   mm diameter and pitch is 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 - 40 .

      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  , 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 external                                threadin  No. 3.    

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

      VRT   ___ (skip it )

                                         

N15 - Referance point command where tool at X0 Z0 .

N16 - Spindle OFF.

N17-  Coolent OFF .

N18 – Main program end .

SUB PROGRAM FOR CYCLE-95

RAM.SPF – Sub program name .

N01- Tool at linearly where X16 and Z0 .

N02 -Tool start cutting  linearly , where X20 & Z-2 (  Chamfer) .

N03 -Tool moves linearly X20 and Z -40 ( turning).

N04 -Tool moves linearly X16 and Z -40 .

N05- Tool moves linearly X16 and Z -48 ( turning ).

N06- Tool moves linearly X25 and Z -48.

N06- Sub program end .

SINUMERIK CNC PROGRAMMING FOR COMBINE CYCLE 95 & 97 (taper threading cycle)