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                                                                                                  Для заказа - info@mitsubishitools.ru  UWC VP                 140°

                              DRILLING (SOLID CARBIDE)                                                                                                                                    Thinning

                              MHE

            Cutting Performance                                                                                                      Chip Geometry

          Hole Accuracy (no reaming needed)

          Drill Diameter (mm)  13.950                                                                                 : New product
                                                                                                                      : 1st regrind
                               13.940                                                                                 : 2nd regrind
                                                                                                                      : 3rd regrind
                               13.930

                               13.920

                                         Hole diameter tolerance within 15m !

                               13.910

                               13.900       5  10 15 20 25                                          30 35 40                         Chip breaking properties
                                         0              Cutting Length (m)                       Feed: 0.18mm/rev                    The workpiece surface is not damaged due to
                                                                                                                                     the fine chips that were generated.
                            Cutting speed: 60m/min

          Workpiece: Ck45                       Coolant: W.S.O.

          Hole depth: 6mm

                               Result of Reducing the Cutting Torque                                                                  Tough Drill Tool Grade

          Prevents the generation of high cutting temperatures and the                                                               aLong tool life
                                                                                                                                                               coated
          formation of a work hardened layer.

                                            Depth of work hardening                              Work hardened layer

                               500

                                                                            10!m                                                                          coating

                               400                                                                                                              (Al,Ti)N

DRILLING MHE DRILLS            300                                                                                                              Cemented carbide
       Vickers hardness (HV)
                                               Conventional drill: 367HV          Conventional drill:                                           substrate TF15
                                                                                      Work hardened layer generated.

                               200                                                                                                      VP15TF

                                               MHE drill: 291HV

                               100

FEATURES                          0 20 40 60 80 100                                                                                  MIRACLE ® coated VP15TF has a high welding
                                                                                                                                     resistance, making it suitable for machining a wide
                               Distance from the machined surface (!m) MHE drill: No work hardened layer                             range of workpiece materials from mild steels and
                                                                                                                                     carbon steels, through to stainless steels and cast
                                                                                                                                     iron.

          The MHE drill can prevent the formation of a work hardened layer (that usually causes tool damage),

          and makes it possible to produce high quality holes.

                              Oversize Comparison                                                                  Recommended Cutting Conditions

                                                     Oversize of Drills

                                50

                               40                                                                                                               &10.0  &18.0

          Oversize (!m)        30                                                                Work Material            Hardness      Cutting Speed       Feed
                                                                                                                                           (m/min)        (mm/rev)

                               20
                                                                      Workpiece : Ck55 (1.1203)

                                               Cutting speed: 74.5m/min                          P Carbon Steel 180 280HB 75 (60 – 90) 0.25 (0.15 – 0.30)

                               10              Feed                  : 0.235mm/rev               (Note) The above cutting conditions should be used as a guide
                                                                                                          and need to be adjusted according to the machine rigidity,
                                               Hole depth : 7mm External coolant                          workpiece clamping and shape.

                               0

                                    MHE Competitor A Competitor B Competitor’s
                                               General  General                   hub drill

                                               purpose drill purpose drill

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