2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN

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          INTERNAL GROOVING

          MICRO-MINI TWIN

             RECOMMENDED CUTTING CONDITIONS

             Work Material               Cutting Speed (m/min)         Feed (mm/rev)                                         Recommended Tool Overhang

                                                                CG03RS/CG04RS       CG05RS/CG06RS/CG07RS                                   (mm)

          P  Carbon Steel · Alloy Steel        80 (40  120)    0.02 (0.01  0.03)  0.03 (0.01  0.05)                                     CG Type Micro-Mini Twin
                        180  280HB            80 (40  120)
                                               80 (40  120)
          M  Stainless Steel                  120 (80  160)    0.02 (0.01  0.03)  0.03 (0.01  0.05)
                  < 200HB

          K  Cast Iron                                          0.03 (0.01  0.05)  0.03 (0.01  0.05)                                     L10+2 (mm)
             < 350MPa                                           0.03 (0.01  0.05)  0.05 (0.01  0.08)

          N Non-Ferrous Metal                                                                                                                          Holder

          (Note) Wet cutting is recommended.

GROOVING  y PRECAUTIONS WHEN USING THE MICRO-MINI TWIN                                                                fig.1

          a	When using a holder for general purpose / small automatic lathe:                                          Internal Face of the Holder

          a	To avoid chipping of the 2nd cutting edge take care when inserting the boring bar into the holder.
             Refer to fig.1. If the 2nd edge contacts the internal face of the holder there is a possibility that it
             may chip.

                                                                                                                                                   Cutting Edge

                                                                                                                      Insert Direction

          s	When using this type of holder, there is a possibility that damage to the shank and the 2nd cutting      fig.2                 3rd Clamping Screw
             edge can occur. Make sure that the clamping screws are tightened to the set torque value.                                     123
             Additionally make sure that there is no clamping screw near the 2nd cutting edge as this can                    Insert Point
             break the boring bar.                                                                                                              2nd Cutting Edge

          e	When using Mitsubishi holders
          	 When using holders with a tool overhang of recommended quantity, ensure that the 3rd clamping

             screw is removed prior to machining. The set torque value for the clamping screw is 2.0 N•m.

          a	When using a square type holder:                                                                         fig.3

          a	When installing the boring bar into the holder, tighten the clamp screws after ensuring the flats on                       Insert The Reference Plane of
             the tool holder are parallel to the reference flats on the micro-mini bar. Refer to fig.3.                                            Square Type Holder

          s	Make sure that the clamping screws are tightened to the recommended values.
          d	Do not tighten the clamp screw without a bar in place, otherwise the bridge will be deformed.

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