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    • 4. 发明授权
    • One-hit tooling for flush mounted rotatable captive nut
    • 一键式工具,用于嵌入式可旋转固定螺母
    • US09205520B2
    • 2015-12-08
    • US13348067
    • 2012-01-11
    • Andrew John Cooke
    • Andrew John Cooke
    • B23P19/06F16B37/06
    • B23P19/062F16B37/062Y10T29/49908Y10T29/5343
    • A two-stage punch accomplishes the two-step process of sheet deformation and nut flaring to attach the nut to the sheet in a single stroke of an assembly press. The punch comprises an outer cylindrical sleeve which captivates a resiliently biased center punch. When the punch is moved downward into contact with the sheet, an embossing ring on the sleeve deforms the sheet material around an aperture in the sheet. When the punch is moved farther downward, a pointed end of the center punch extends beyond the embossing ring and into forcible contact with the nut. The nut is thereby flared capturing the sheet between flared edges of the nut and a nut flange.
    • 两级冲头完成片材变形和螺母扩口的两步过程,以在组装压力机的单次冲程中将螺母附接到片材上。 该冲头包括外圆柱形套筒,该外套筒套住弹性偏置的中心冲头。 当冲头向下移动以与片材接触时,套筒上的压花环使片材围绕片材中的孔变形。 当冲头向下移动时,中心冲头的尖端延伸超出压花环并与螺母强制接触。 螺母因此在螺母的扩口边缘和螺母法兰之间张开。