Apparatus and method for installing blind fasteners
    81.
    发明授权
    Apparatus and method for installing blind fasteners 失效
    装置和方法用于安装黑色紧固件

    公开(公告)号:US3654792A

    公开(公告)日:1972-04-11

    申请号:US3654792D

    申请日:1969-07-25

    申请人: BRILES MFG

    发明人: MEAD DANIEL R

    摘要: An automatically sequencing, hydraulically powered pre-entry pull-up tool for upsetting blind fastener sleeves on the blind side of a structure, and a novel sequencing method employed by said tool to assure complete and uniform fastener upsetting. The tool includes a hand gun having a protruding threaded mandrel insertable into a blind fastener sleeve to be upset, the mandrel rotating in one direction to engage with the sleeve, axially retracting to pull up and upset the sleeve, and then rotating in the opposite direction to disengage from the sleeve, these three steps being hydraulically powered in the hand gun by hydraulic power from a remote source, and being electrically controlled. According to the method of the disclosure uniform upsetting is assured by effecting the automatic shifting from stage to stage of the operation by sensing back pressure in the hydraulic system.

    摘要翻译: 一种自动排序的液压动力预入口上拉工具,用于在结构的盲侧镦锻盲紧固件套筒,以及所述工具采用的新型测序方法,以确保完整和均匀的紧固件镦锻。 该工具包括手枪,该手枪具有可插入盲链紧固件套筒中的突出的螺纹心轴,心轴沿一个方向旋转以与套筒接合,轴向缩回以拉紧和压扁套筒,然后沿相反方向旋转 为了脱离套筒,这三个步骤通过来自远程源的液压动力在手枪中液压动力并被电控制。 根据本公开的方法,通过检测液压系统中的背压来实现从操作阶段到阶段的自动换档来确保均匀镦锻。