2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN

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y OPERATIONAL GUIDANCE                 Drill Length                          Drill Installation                Through Coolant Type
          Drill Holding

                                                                                                                  Spindles     Revolving
                                                                                                                  Through        Coolant
                                                                                                               Coolant Type  Machine Type

     Adjusting Screw                                 A

Thrust bearing type collet             D1                                                                     Coolant pressure is approx.
chuck holds the drill securely.                                                                                1.5MPa  7MPa
                                       A > D1 x 2                                                              Recommended coolant pressure:
                                                                             Do not clamp on the flutes.       >3Mpa
     Drill Installation                Coolant Handling
                                                                                Thin Workpiece                    Interrupted Cutting
1D1                                    1)	Dirt and dust particles in old
                                          coolant can clog the oil hole                            If Bending                    One Process
                                          and prevent effective flow.                                Occurs
                                          Regular coolant exchange is                                                              zLower the feed
                                          recommended.                                              Support                            when drilling
                                                                                                the Workpiece                          the interrupted
1) Make approx. 1D1(D1: drill          2)	Small particles of swarf will                                                               part.
    diameter) pilot hole by using the     jam in the oil hole. Use a filter
    MHS with the shortest flutes.         as a preventative measure.                                                             Requires Prior
                                          When using small diameter                                                              Machining
2) Use the pilot hole as a guide          drills, use a fine mesh filter.
    and machine by the drill with                                                                                                  zSpot face with
    coolant hole. Depending on the                                                                                                     an end mill
    application, carry out pecking.                                                                                                    prior to drilling.

     Stepped Holes                     Burring and Workpiece Chipping

                                                                                                                                                           DRILLING

zDivide the machining into two        zLower the feed rate when
  processes.                             breaking through.

xDrill the larger hole first.         xChange the point angle.

*Tools for chamfering and spot
  facing can be produced to
  order.

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