Method and apparatus for producing a blank from stock material

Details Method and apparatus for producing a blank from stock material Method and apparatus for producing a blank from stock material

B - Operations, Transporting

21

D

113/73

B21D 45/06 (2006.01) B21D 28/16 (2006.01)

Patent

CA 1127910

ABSTRACT OF THE DISCLOSURE The present invention relates to a method and apparatus for producing a smooth edge blank from stock material. A blanking die is carried by the movable die shoe and a closely cooperating blanking punch is secured on the fixed die shoe. Spring biassed means is displace- ably provided within the blanking die to apply pressure on a sheet of stock located on the punch only over the area to be blanked out from said sheet of stock. A pierc- ing punch may also be provided and extends coaxially through the blanking die and a bore extending through the blanking punch provides a piercing die. The spring biassed means for applying pressure to clamp the stock only over the area to be blanked is a shedder displaceably disposed with- in the bore of the blanking die. A stripper encircling the blanking punch is provided for removing scrap stock upon completion of the blanking step and a spacer means is disposed to space the blanking die and the stripper apart by a distance exceeding the thickness of the stock.

358955

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