SIEMENS SINUMERIK CYCLE 90 (Thread milling )

                                Sinumerik CYCLE 90 used for performing external & internal threading operation. You will define all geometrical axis before calling the cycle.

CYCLE 90 ( RTP , RFP , SIDS , DP , DPR , DIATH , KDIAM , PIT , FFR, CDIR , TYPTH ,                           CPA , CPO )

Where , RTP = Retraction plane ( return plane)
              RFP = Reference plane
              SIDS = Safety distance
              DP =  Final depth
              DPR = Final depth relative to reference plane
              DIATH = Outer diameter of thread .
              KDIAM = Internal diameter of thread
              PIT = Pitch
                        Range : 0.001 ............2000.00mm
             FFR = Feed rate for threading time .
             CDIR = Direction of rotation of tool at time of threading G02 OR G03

            TYPTH = Thread type :value :- 

                             0 - Internal thread

                             1- External thread, diameter programming via DIATH     

                             2- External thread, diameter programming via KDIAM                    

            CPA =  Center point of a circle, abscissa ( x-axis)

            CPO=   Center point of circle, ordinate (y-axis)

EXAMPLE : With internal threading at XY- plane at point X50 Y50 .

HARSH.MPF

N10  G90 G71 M06 T03 D01 ;

N20  M03 S500 M08 ;

N30  G17 G00 X0 Y0 Z50 ;

N40  CYCLE 90 ( 20 , 0 , 5 , 0 , 40 , 30 , 25 , 2 , 500 , 2 , 0 , 50 , 50 )

N50  G90 G00 Z100 ;

N60  M05 M09 M30 ;

DESCRIPTION

HARSH.MPF- Name of the main program

N10 -  Absolute coordinate system, a metric input command, Tool change command select tool no  3 .

N20- Spindle On clockwise at the speed 500 rpm & coolant is on 

N30-  Internal threading at XY- plane, rapid traverse command where tool takes a position at reference point where X0 , Y0 & Z50 .

N40- Threading cycle 90 ( RTP= 20 

                                           RFP= 0 ,

                                           SIDS= 5 ,

                                           DP= 0

                                           DPR =40 ,

                                           DIATH = Major dia of thread 30

                                           KDIAM = Minor dia of thread 25

                                           PIT = 2 pitch

                                           FFR= 500 

                                           CDIR = G02 

                                           TYPH = 0 ( Internal threading )

                                           CPA = 50 (  Center point of a circle x-axis)

                                           CPO=  50 ( Center point of a circle y-axis)

N50- Absolute coordinate system , tool goes rapidly at Z100 .

N60- Spindle stop , coolant off , main prog. end 

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