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    • 38. 发明授权
    • Combination precision drill guide and replacement part
    • 组合式精密钻孔导轨和更换部件
    • US6109839A
    • 2000-08-29
    • US97167
    • 1998-06-12
    • Michael Thomas
    • Michael Thomas
    • B23B49/02B23B35/00
    • B23B49/02Y10T408/03Y10T408/553Y10T408/5584Y10T408/568Y10T408/97
    • A kit for repairing a worn out of round aperture. The kit includes a template which is later utilized as a part of the repair. In a first embodiment, the template is precisely located by means of utilizing the bottom of the aperture which does not become out of round as does the upper portion thereof and is fixedly attached to the structure containing the out of round aperture. A sacrificial pin is inserted in the out of round aperture, centered therein by means of the bottom non-out of round portion and adhered thereto. A drill is then passed through the boring guide enlarging the out of round aperture to a true round bore and the sacrificial pin is drilled out at the same time. The boring guide is then removed and an enlarged precision pin is inserted into the re-bored aperture. The new pin is fixedly secured in the new aperture by any convenient means such as peening between the pin outer surface and the adjacent structure. In a second embodiment, a similar process using the boring guide and drill to enlarge an out of precision aperture and installing an insert to return the aperture to the original internal diameter.
    • 用于修复圆形孔径磨损的套件。 该套件包括一个稍后用作维修的一部分的模板。 在第一实施例中,模板通过利用孔的底部而精确地定位,孔的底部不像其上部那样变得不圆,并且固定地附接到包含圆形孔的结构。 将牺牲销插入到圆形孔内,通过底部未从圆形部分中心并粘附到其上。 然后将钻头穿过钻孔导向器,将圆形孔径扩大到真正的圆孔,并且同时钻出牺牲销。 然后将钻孔导向器移除,并将放大的精密销插入到再钻孔中。 新销通过任何方便的方式固定在新的孔中,例如在销外表面和相邻结构之间进行喷丸处理。 在第二实施例中,使用钻孔导向器和钻头的类似工艺来扩大精密孔径并安装插入件以将孔返回到原始内径。