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JUNE 2017         TAP TIMES          -9-

              Fixture Development (from 6)

        Process and parts-specific fixtures for pro-
        totype  sample  builds can  present  a  chal-
        lenge to even the most veteran designer.

        Custom designed to fit
        Each  fixture  must  be  custom  designed  to
        fit the geometric features of the part and
        properly mate with the handling features of
        the automated process equipment.

        The fixture must present the part to the au-
        tomated process equipment—for instance,
        the automated wire bonder—in such a way
        that it can perform the intended process to
        the specified tolerance while reducing part-
        to-part variation.  See page 10

         Bottom plate, top plate and weights of the fixture.

                         Assembled fixture
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