Metal deforming – By tool-couple embodying nonplanar tool-face – With complementary tool-faces
Patent
1991-06-25
1992-11-10
Crane, Daniel C.
Metal deforming
By tool-couple embodying nonplanar tool-face
With complementary tool-faces
72446, 29846, 29882, 29884, B21D 3714, H01R 4316
Patent
active
051614030
ABSTRACT:
Mechanical forming apparatus and method for manufacturing planar contact projections for a flexible circuit is disclosed. A forming die includes a punch assembly configured for mating with a die plate. The punch assembly comprises a pin plate coupled to a punch plate and configured to hold adjusting pins and forming punches, respectively. Each forming punch has a tail with a contoured tip that conforms to the geometry of a desired contact projection. The die plate has a plurality of cavities configured and dimensioned for receiving the tail tips of the punches. In operation, the punch assembly and die plate are placed in a die set and installed in an open position in a punch press with a flexible circuit positioned therein. When activated, the press closes the die set, causing the punch tails to push against the flexible circuit, while circuit material flows into the die plate cavities. As the cavities fill, any excess material is compressed into peripheral areas of the die plate surrounding the cavities. Accordingly, contact projections of a specific size and shape are formed.
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Beam, W. D., "Selective Punching Apparatus", from Western Electric Technical Digest, No. 58, Apr., 1980, pp. 3, 4.
Crane Daniel C.
Digital Equipment Corporation
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