B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/66
B21D 22/20 (2006.01) B21D 24/00 (2006.01) B21D 26/00 (2006.01) B21H 7/16 (2006.01)
Patent
CA 1179901
ABSTRACT OF THE DISCLOSURE An apparatus is disclosed for the forming of metal, more particularly for the forming of objects made from strips of metal. The apparatus comprises a base block which has a flat, horizontally-oriented, planar upper surface adapted to receive a forming die; a top block assembly that includes a lower member having a flat, horizontally-oriented, planar lower surface that is oriented parallel to said upper surface of said base block and is movable as to proximity with respect thereto and vertically-oriented hydraulic press means for imparting selected amounts of bias to said top block against it being impelled away from said base block. A roll assembly is positioned between the lower surface of the top block and the upper surface of the bottom block. This assembly comprises two contacting cylindrical rolls which are oriented with the axes of said rolls parallel to each other and to both said lower surface of said top block and said upper surface of said bottom block and which describe a fictitious plane per- pendicular to said surfaces and which are supported by roll support means, said roll assembly means being free to move along a path perpendicular to said ficti- tious plane. Horizontally oriented hydraulic motion means are provided for causing the roll support means and the rolls to move along a path which is parallel to said surfaces and perpendicular to said fictitious plane. Stop block means are provided for positionally limiting the proximity of said sur- faces with respect to each other to a distance equal to the collective diameters of said two rolls. With the apparatus described above a strip of metal-forming stock may be positioned above a forming die positioned in the base block and an object of desired configuration and dimension may be produced by causing at least one reciprocation of said roll assembly through operation of said motion means while said roll assembly is biased against deflection upward in excess of pre-determined amounts along the path described by said fictitious plane in response to coming into contact with said strip as said assembly reciprocates by means of biasing pressure applied to said top block by means of said press means that is applied thereto in selected amounts which may be increased successively with sequential reciprocations of said roll assembly until recip- rocation occurs with said top block positioned in the closest proximity to said base block that is permitted by said stop blocks. The apparatus of the in- vention has utility in the formation of complex-shaped objects or articles from metal stock which is not highly ductile or malleable.
422606
Sherman Alden O.
Smart & Biggar
LandOfFree
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