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Compound fixed thread cutting cycle Longitudinal Okuma Control


G71 Compound fixed thread cutting cycle: Longitudinal
        
[Command format]

          G71 X_ Z_ A_ B_ D_ U_ H_ L_ E_ F_ J_ M_ Q_
                    I

          X: Final cutting depth of thread cutting
          Z: Coordinates of ending point for longitudinal thread cutting
          A: Taper angle
          I: Difference of radii between start and end points of taper   thread cutting (radius instruction)
             (Instruct A or I only for taper thread.)
          B: Cut angle  (The range is 0<=B<180.  If not instructed, it is regarded as 0, the same as the cutter angle of  ordinary tool.)
          D: Cut depth at the 1st cycle
          U: Finishing margin (If not instructed, it is regarded as U=0, without finishing cycle.)
          H: Difference between thread major diameter and crest diameter (diameter instruction)
          L: Thread overcutting distance at the last thread cutting cycle   (Effective when M23 is instructed.  When L is not instructed    with M23 effective, however, L is equal to one pitch at the  start of thread cutting.)
          E: Pitch change distance per pitch for variable pitch thread
          F: Thread pitch instruction (When J is instructed,   F/J pitch is used.)
          J: Number of threads within the distance instructed by F (If not instructed, J=1.)
          M: This M code instructs the cut mode and cut pattern for the thread cutting.M32:  Single blade cut mode
         
          M33: Zig-zag cut mode
          M34: Reverse single blade cut mode
          M73: Cut pattern 1
          M74: Cut pattern 2
          M75: Cut pattern 3, cut pattern 4
          Q: Instruct the number of multi-thread for multi-thread machining.
          
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