B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 37/15 (2006.01) B21D 9/12 (2006.01) B21D 26/02 (2006.01)
Patent
CA 2044882
63612-001 ABSTRACT OF THE DISCLOSURE Method and apparatus for forming a tubular metal member of a shape and length having an opened end and a closed end into an element which is formed of a different shape and length by forcing and thereby flowing the metal of the tubular member from one mold cavity to another. The apparatus comprises a form mold having an entrance cavity of a shape and length generally corresponding to the tubular member and in which the entire tubular member is initially located and an exit cavity of a different shape and length in which the flowing metal of the tubular metal member is forced to form the element having the shape and length of the exit cavity. The form mold has an entrance opening in a side wall thereof which is connected to the entrance cavity. The tubular metal is initially located entirely within the entrance cavity of the form mold, with the closed end thereof located adjacent the exit cavity and the opened end of the tubular metal member being located at the entrance opening to the entrance cavity. Means are provided for simultaneously applying a mechanical force and a hydraulic force in a first direction to the tubular metal member to thereby flow the metal of the tubular member from the entrance cavity into the exit cavity to form the formed element. The form mold has a passage leading from the exit cavity to a source of hydraulic fluid which reacts against the closed end of the tubular metal member in a second direction in opposition to the hydraulic and mechanical forces applied in the first direction to the tubular metal member in order to control the speed of the formation of the formed element.
Johnson Bruce R.
Kent & Edgar
Muskegon Automation Equipment Inc.
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