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    • 3. 发明授权
    • Billet production
    • BILLET生产
    • US3750505A
    • 1973-08-07
    • US3750505D
    • 1971-12-27
    • UNIV BIRMINGHAM
    • ORGAN APRICE C
    • B23D21/14B26D3/16
    • B23D21/14Y10T83/0596Y10T83/396Y10T83/398Y10T83/75Y10T83/7547
    • An apparatus and method for shearing tubular billets, the billet being engaged within apertures in a fixed and a moveable shear blade, the end part of the stock to be sheared off being located in the moveable shear blade and adjacent part of the stock in the fixed shear blade. A mandrel comprising three relatively moveable parts is provided. The free end or location part of the mandrel is engaged in the part of the stock within the fixed shear blade and the mandrel has a location part externally of the stock and fixed relative to a base part of the apparatus, and there being a moveable part engaged in the part of the stock within the moveable blade and engaged with guide surfaces on the location end support parts. In use, the moveable blade is moved relative to the fixed blade transversely of the tubular stock so that the moveable part of the mandrel moves with the end part of the tube and the end part of the tube and adjacent part of the tube are internally supported by the mandrel.
    • 一种用于剪切管状坯料的装置和方法,坯料接合在固定和可移动的剪切刀片的孔内,要剪切的坯料的端部位于可移动的剪切刀片中,并且在固定的剪切刀片中的相邻部分 剪刀 提供了包括三个相对可移动部件的心轴。 心轴的自由端或位置部分接合在固定剪切刀片内的原料的部分中,并且心轴具有位于坯料外部的位置部分并且相对于设备的基部固定,并且存在可移动部件 接合在可移动刀片内的库存部分并与定位端支撑部件上的引导表面接合。 在使用中,可移动刀片相对于横向于管状坯料的固定刀片移动,使得心轴的可移动部分与管的端部一起移动,并且管的端部和管的相邻部分被内部支撑 通过心轴。