Metal deforming – Process – Deforming stacked blanks
Patent
1987-04-20
1988-03-22
Spruill, Robert L.
Metal deforming
Process
Deforming stacked blanks
72348, 72350, 72467, B21D 2221, B21D 2224
Patent
active
047320311
ABSTRACT:
A method of forming a deep-drawn and ironed container having a bottom profile wherein a cup is formed by drawing an inverted cup and reverse drawing the cup and simultaneously imparting a bottom profile thereto while controlling the thickness of the material in the bottom. The method also includes providing support to the profiled bottom while ironing the cup thus formed. The method is accomplished by a system which includes a draw-redraw station wherein the inverted cup is adjustably held by a fluidly actuated lift out ring and draw pad in the bottom area against a punch during reverse drawing to control metal thickness in the bottom. A separate pressure sleeve is also engaged with the profiled bottom during ironing to prevent pulling material from the bottom.
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Bulso, Jr. Joseph D.
McClung James A.
Redicon Corporation
Spruill Robert L.
Studebaker Donald R.
Taylor Reese
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