| 摘要 |
A device for positioning stock within a metal forming machine has a body containing a pusher arm. The device may use interchangeable standard and reverse pusher arms . The pusher arms mount on pivot pins and have position restoring springs. The springs exert force on the pusher arms at a distance from the pivot pins, thereby inducing a moment in the pusher arm. The pusher arm translates this moment into a lateral force exerted by the pusher arm on a piece of stock metal. The body may be mounted in either a reverse or standard configuration resulting, in combination with the use of either the standard or reverse pusher arm, in the ability to exert a lateral force in different directions depending on the configuration used. The device may also have a single pusher arm which may be used in either configuration.
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