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    • 61. 发明授权
    • Beading machine and method
    • 珠光机及方法
    • US3648503A
    • 1972-03-14
    • US3648503D
    • 1970-03-27
    • VEEDER INDUSTRIES INC
    • HARPER LAFFIE
    • B21D17/04
    • B21D17/04
    • In a machine for forming an annular radially inwardly projecting bead in the cylindrical end portion of a tubular sheet metal fitting to provide the sidewalls and bottom of a radially outwardly opening channel, which machine includes male and female channel-forming power-driven rollers rotatable in opposite directions with a side of said cylindrical end portion between them, to rotate said portion and to form said bead. The male roller is floatingly supported for axial movement and is movable under force transversely thereof and radially of said cylinder toward the female roller and a rotating thrust surface axially engages the circular end edge of the tubular fitting adjacent to the male roller for progressively drawing the metal of said marginal portion to form a deeper channel than heretofore, during rotation of said rollers for rotating said tubular portion.
    • 在用于在管状金属配件的圆柱形端部中形成环形径向向内突出的胎圈的机器中,以提供径向向外的开口通道的侧壁和底部,该机器包括可转动的阳和阴通道形成的动力驱动辊 相反的方向,其中所述圆柱形端部的两侧之间的一侧,以旋转所述部分并形成所述珠。 阳辊被浮动地支撑为轴向运动,并且可以在其横向方向上以及所述气缸的径向方向朝向阴辊移动,并且旋转的推力表面轴向地接合邻近阳辊的管状配件的圆形端部边缘,以逐渐拉伸金属 的所述边缘部分以形成比迄今为止更深的通道,在所述辊旋转期间旋转所述管状部分。