2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN

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          GROOVING SYSTEM

          MACHINING RECOMMENDATIONS

          a Notes on multi-functional machining (BM breaker)

                      Copying                                                                                      Roughing

                  ap

          aWith the BM breaker insert, 3 dimensional copying is possible.                  aUse plunging and cross-feed machining.
            Set the depth of cut (ap) to 40% less than the insert width.                     When machining the corner, vibration is likely to occur.
                                                                                             To avoid this, reduce the feed by 50%.

                                                                    Finishing

GROOVING                                                                                              Insert       ap (mm)
                                                                                                                     0.05
                                                                    ap                     GY2M0200D100N-BM          0.10
                                                                                           GY2M0250E125N-BM          0.15
          aCarry out finishing in one process.                                             GY2M0300F150N-BM          0.20
            For the depth of cut (ap) when back turning, refer to the table on the right.  GY2M0318F159N-BM          0.24
                                                                                           GY2M0400G200N-BM
                                                                                           GY2M0475H238N-BM          0.30
                                                                                           GY2M0500H250N-BM          0.40
                                                                                           GY2M0600J150N-BM
                                                                                           GY2M0635J318N-BM
                                                                                           GY2M0800K400N-BM

          a Notes for cutting off

                            Feed                                                       Revolution

                                  a Distance from the cutting edge                                                a Distance from the cutting edge
                                       to the workpiece centre                                                           to the workpiece centre

                                  &D                                                       &D

                                                                       Feed f              Maximum spindle speed   Revolution n
                                                               1.0xf                                               max-n

                                                               0.5xf                                               0.8x(max-n)

                                Distance a 0 0.2xD 0.5xD                                   Distance a                  start-n
          aWhen the cutting edge approaches the centre, reduce the feed                                  0        0.5xD

            by 50%.                                                                        aWhen using constant cutting speed during a cutting off cycle, it
                                                                                             is recommended to limit the spindle speed to 80% of maximum
          aIf necessary, stop the feed prior to reaching the centre of the                  to ensure stability.
            workpiece to prevent it falling under its own weight.
                                                                                           aTo prevent the workpiece from being expelled, lower the
                                                                                             spindle speed before finishing the grooving operation.

                                                                    Insert

                  Neutral insert  Handed insert                                            Neutral insert          Handed insert

          aWhen there is a centre stub on solid bar work or burrs are formed on pipe material, it is possible to decrease them by using a handed insert.
            With a handed insert, machining tends to be less stable when compared to using a neutral insert. Pay special attention to avoid fracturing of
            the cutting edge and decrease the feed when necessary.

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