| 摘要 |
An open-ended container is produced utilizing as a starting material a unitary drawn sheet metal container body which has a substantially circular endwall, a sidewall and a curved portion joining the two. This is achieved by full diameter blanking of the endwall. The blanking is carried out by the use of cooperating support and cutting dies. The support die is contoured to the interior of the container body. The cutting die contains a uni-diameter recess bounded by a cutting edge aligned with the sidewall of the support die. The resulting cut has a tapered configuration which facilitates curling of the sidewall in two steps to provide a rimmed opening.
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