| 摘要 |
In accordance with the present invention, an improved apparatus and method for prehemming and hemming is provided. More particularly, the improved apparatus and method is for folding an edge portion of a curved arcuate panel to create a hem in a single cycle of operation with a single hemming swing steel pressed only in the vertical direction. The apparatus and method use an anvil for supporting an associated assembly of the outer skin and the inner panel, an upper body, and a steel mounted to the upper body. The steel is moved between first and second operative positions and has a first angled surface for prehemming the assembly when the steel is in the first operative position and a second angled surface for fullhemming the assembly when the steel is in the second operative position.
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