Page 10 - ISCAR_ARTICLE_2020
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Femoral Stem
        Machining the femoral stem involves slotting, spot
        milling, drilling, chamfer milling, turning, face and
        profile milling.

        MULTI-MASTER endmills with indexable solid
        carbide heads in the diameter range of 12.7-25 mm
        (.500-1.000 in) are used for slotting. Spot milling
        is performed by means of SOLIDMILL endmills
        with 4 flutes, 38° helix and variable pitch for chatter
        dampening with 3xD relieved necks. The drilling
        operation uses SOLIDDRILL solid carbide drills
        with a range of 3-20 mm (.185-.765 in) and
        3xD / 5xD drilling depths.


        Chamfer milling uses MULTI-MASTER endmills with
        indexable solid carbide heads in the diameter range
        of 9.1-20 mm (.360-.750 in). ISO standard geometry
        inserts with precision ground cutting edges are used
        with SWISSTURN toolholders featuring JETCUT high
        pressure coolant for the turning stage.                                              INDEXABLE SOLID CARBIDE LINE
        SOLIDMILL 3 flute, 30° helix short solid carbide
        ball nose endmills with a 3-25 mm (.125-.625 in)
        diameter  range are employed for profile milling, and
        SOLIDMILL endmills with 4 flutes, 38° helix and
        variable pitch for chatter dampening with 3xD relieved
        necks with a 1-8 mm (.125-.312 in) diameter range
        are utilized for face milling.




                                                                Bone Plate
                                                                For rough milling, the FINISHRED endmill geometries
                                                                allow the tool to perform roughing and finishing at
                                                                the same time. MULTI-MASTER interchangeable
                                                                solid carbide tapered heads are applied to the finish
                                                                milling operation, whereby the curved surfaces can
                                                                be machined by tilting the tool and applying a large
                                                                corner radius at small cutting depths.  Shouldering is
                                                                done with CHATTERFREE endmills,  which enable
                                                                high material removal rates, eliminate vibration, and
                                                                reduce cycle time.
                                                                The final milling stage engages MULTI-MASTER
                                                                4 flute, 30° helix short solid carbide ball nose endmills
                                                                in the 5-25 mm (.190-1.000 in) range. SOLIDDRILL
                                                                solid carbide drills, with no coolant holes and 4xD
                                                                drilling depth, ensure stable and accurate drilling. Mill
                                                                threading is achieved with SOLIDTHREAD 55° or 60°
                                                                profile solid carbide taper thread mills.
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