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    Method of making an intermediate stage, intermediate blank for a dynamo electric machine commutator ring, and apparatus to carry out the method
    31.
    发明授权
    Method of making an intermediate stage, intermediate blank for a dynamo electric machine commutator ring, and apparatus to carry out the method 失效
    制造中间台的方法，用于发电机整流子环的中间坯料，以及执行该方法的装置

    公开(公告)号：US4621514A

    公开(公告)日：1986-11-11

    申请号：US650348

    申请日：1984-09-13

    Applicant: Fritz Dohmann ,  Peter Franz ,  Friedrich Klaas ,  Gunter Schulze

    Inventor： Fritz Dohmann ,  Peter Franz ,  Friedrich Klaas ,  Gunter Schulze

    IPC: B21K1/04 ,  B21K21/00 ,  B21K23/04 ,  H01R43/06 ,  B21D22/00

    CPC classification number: H01R43/06 ,  B21K21/00 ,  B21K23/04 ,  Y10T29/49011

    Abstract: To form a commutator segmental ring, an intermediate stage commutator ring (4) is formed from a flat strip (1) of commutator material which is bent into essentially cylindrical tubular shape to form a blank (2) having a gap or crack (3) adjacent the ends of the strip. The commutator ring, upon forming of the commutator, is severed into commutator segments. The gap or crack of the blank is aligned with a ridge or rib in a forming punch press to form a groove within the essentially cylindrical tubular blank (2) so that, when the intermediate stage commutator ring (4) is made, a cylindrical portion (5) already dimensioned for the intermediate segmental ring and a flange portion (6) are made, with a groove in alignment with the gap or crack obtained during cold-flowing of the metal in the press by the guidance afforded by the rib or ridge in the gap or crack of the cylindrical tubular blank. Preferably, the ridge or rib, defining the groove, extends in a plane which passes through the axis of the cylindrical portion (5) of the intermediate commutator ring (4) and extends radially therefrom through the center line of the groove. The apparatus includes multiple concentric punch, stamp and die elements to permit cold-flowing of the cylindrical tubular blank upon compression of the commutator metal which, typically, is copper.

    Abstract translation: 为了形成换向器分段环，中间级换向器环（4）由换向器材料的扁平条（1）形成，该整流子材料弯曲成基本上为圆柱形的管状，以形成具有间隙或裂纹（3）的坯料（2） 邻近条带的端部。 换向器环在换向器形成时被切换成换向器段。 坯料的间隙或裂纹与成形冲压机中的脊或肋对齐，以在基本上圆柱形的管坯（2）内形成凹槽，使得当制成中间级换向器环（4）时，圆柱形部分 已经为中间节段环设置尺寸的凸缘部分（5）和凸缘部分（6），其中凹槽与通过肋条或凸条提供的引导在压力机内的金属冷流期间获得的间隙或裂缝对齐 在圆柱形管状坯料的间隙或裂缝中。 优选地，限定凹槽的脊或肋在穿过中间换向器环（4）的圆柱形部分（5）的轴线的平面中延伸并且从其径向延伸穿过凹槽的中心线。 该装置包括多个同心冲头，印模和模具元件，以在压缩换向器金属（通常为铜）时允许圆筒形管状坯件的冷流动。

    Unitary fastener insert for structural sandwich panels
    32.
    发明授权
    Unitary fastener insert for structural sandwich panels 失效
    用于结构夹心板的单一紧固件插件

    公开(公告)号：US4557100A

    公开(公告)日：1985-12-10

    申请号：US491952

    申请日：1983-02-07

    Applicant: Friedrich J. Gorges

    Inventor： Friedrich J. Gorges

    IPC: B21K21/00 ,  B64C1/18 ,  F16B5/01 ,  E04C2/34

    CPC classification number: F16B5/01 ,  B21K21/00 ,  B64C1/18

    Abstract: A unitary fastener insert (50) for structural sandwich panels (52) is comprised of a shaft (58) of a generally uniform circular cross section having a base (64) and a tip (62), a generally circular flange (68) extending radially outward from the base circumferentially peripheral the shaft, and a central stepped bore therethrough (72) including an enlarged fastener seat recess (78) disposed interiorly of the tip for receiving the head (90) of a fastener (54) merging to a reduced bore (82) for receiving the shank (94) of the fastener. The insert of the present invention is specifically configured for production by a forging technique, also described herein.

    Abstract translation: PCT No.PCT / US83 / 00174 Sec。 371日期1983年2月7日 102（e）1983年2月7日，PCT提交1983年2月7日PCT公布。 出版物WO84 / 03130 日期为1984年8月16日。用于结构夹层板（52）的单一紧固件插入件（50）由具有基部（64）和尖端（62）的大致均匀的圆形横截面的轴（58）组成， 大致圆形的凸缘（68）从基部周向周向延伸到轴上，以及中心阶梯孔（72），其包括扩大的紧固件座部凹部（78），其设置在尖端的内部，用于接纳紧固件的头部（90） （54）合并到用于接收紧固件的柄（94）的减小的孔（82）。 本发明的插入件特别地构造成用于通过本文也描述的锻造技术进行生产。

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