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    Rivet
    1.
    发明授权
    Rivet 失效
    铆钉

    公开(公告)号：US3657957A

    公开(公告)日：1972-04-25

    申请号：US3657957D

    申请日：1969-11-24

    申请人： OLYMPIC SCREW & RIVET CORP

    发明人： SIEBOL GEORGE

    IPC分类号： F16B19/10 ,  F16B13/06

    CPC分类号： F16B19/1054

    摘要： A blind rivet comprising a headed sleeve telescoped onto a setting pin having a pulling section projecting beyond the headed end of the sleeve and an expansion section projecting beyond the other end of the sleeve with an expanding and locking head on the end of the expansion section. The expanding and locking head of the pin has a core of high tensile strength and a relatively soft and ductile peripheral layer of lower tensile strength. After the rivet is set in two side-by-side workpieces from one side of the latter, the expanding and locking head is drawn into the sleeve to form an expanded, bulb-shaped head on the sleeve. The soft peripheral layer of the pin yields to bulge the sleeve into bearing contact with the adjacent workpiece with a controlled force avoiding tearing or splitting of the work despite variations in total thickness thereof. A first alternative expanding and locking head has a central cut-out forming a weakening recess, and a second alternative has a similar cut-out with an inturned flange partially closing the recess. A method of making the foregoing rivet including the steps of forming a hardened head on the setting pin by cold working the head, peripherally heating the head while confining the heat substantially to the peripheral layer, and rapidly cooling the head before the heat penetrates the hardened core thereof. A tapered shoulder on the expansion section is hardened by cold working after the treatment of the head is completed.

    摘要翻译： 一种盲铆钉，其包括可伸缩到定位销上的带头套筒，所述定位销具有突出超过套筒头端的拉伸部分，以及在膨胀部分的端部上伸出超过套筒另一端的膨胀部分。 销的膨胀和锁定头具有高拉伸强度的芯和较低拉伸强度的相对柔软且延展性的外围层。 在将铆钉从后侧的一侧设置在两个并排工件之后，将膨胀和锁定头拉入套筒中以在套筒上形成膨胀的球形头部。 针的软周边层产生使套筒膨胀成与相邻工件的轴承接触，并具有受控的力，避免了工件总厚度变化的撕裂或分裂。 第一替代的膨胀和锁定头具有形成弱化凹部的中心切口，并且第二替代方案具有类似的切口，其中内凸缘部分地封闭凹部。