Page 9 - ISCAR_ARTICLE_2020
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Acetabular Shell
        Machining of the acetabular shell component
        consists of rough internal turning, finish profile
        milling, shouldering, upper and bottom chamfering,
        drilling, thread milling, external rough turning,
        and external grooving.

        HELI-GRIP double-ended inserts are used for rough
        internal turning, as the twisted design allows them to
        groove deeper than the insert length. Internal finish
        milling is performed by SOLIDMILL 3-flute, 30° helix
        short solid carbide ball nose endmills. SOLIDMILL
        endmills with 4 flutes, 38° helix, and variable pitch for
        chatter dampening, perform the finish shouldering
        operations, and a special-shaped endmill is utilized
        for the upper and bottom chamfering that follows the
        drilling stage.


        SOLIDDRILL solid carbide drills with 3-20 mm
        (.185-.765 in) range and 3xD and 5xD drilling depths
        are used for the drilling process. SOLIDDRILL tools
        feature a right-hand cut with and without internal
        coolant nozzles and advanced TiAlN coating for
        optimum hole quality, high performance reliability and
        economical output.
        Thread milling is done by SOLIDMILL solid carbide
        internal threading endmills, which integrate coolant
        holes for ISO thread profiles. ISO standard inserts
        with SWISSTURN toolholders with JETCUT high
        pressure coolant are used for rough turning, and
        external grooving is performed with CUT-GRIP
        precision inserts.


        SOLIDMILL endmills with 4 flutes, 38° helix and
        variable pitch for chatter dampening with 3xD
        relieved necks, and SOLIDMILL 3 flute, 30° helix
        short solid carbide ball nose endmills perform the
        final milling operations.


           The machining required for
              a femoral head involves

                 different operations,

              including rough turning
         and drilling, internal grooving

                         and milling





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