| 摘要 |
A metal bending machine comprising a lower pinchroller composed of modular interchangeable segments, and upper pinchroller composed of modular interchangeable segments, and a radius roller composed of modular interchangeable segments, the lower pinchroller being fixedly and rotatably mounted upon a pinchroller table, the upper pinchroller being rotatably and vertically adjustably mounted in alignment with and above the lower pinchroller, and the radius roller being rotatably and vertically adjustably mounted upon the pinchroller table behind the upper and lower pinch rollers, the upper and lower pinchrollers being counter-rotated with respect to each other by a rotating means, the segments of the upper and lower pinchrollers and the radius roller having annular channels therearound closely fitted to the cross-sectional profile of a workpiece to be bent by the metal bending machine, the metal workpiece being driven into and through the pinch point formed by the upper and lower pinchrollers, and into contact with an over the radius roller, inducing a progressive bend upon the metal workpiece as the metal workpiece is progressively driven through the pinch point.
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