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    • 1. 发明授权
    • Drilling fixture
    • 钻具
    • US4461603A
    • 1984-07-24
    • US359821
    • 1982-03-19
    • George KleeGeorge R. De NomaStephen L. CollierRodney J. Newman
    • George KleeGeorge R. De NomaStephen L. CollierRodney J. Newman
    • B23B47/28
    • B23B47/281B23B47/28B23B2247/12B23B2247/18B23B2270/16Y10T408/55Y10T408/567
    • A drilling fixture for drilling either cylindrical or flat workpieces on or off center is disclosed. The fixture includes a base having a V-shaped groove for receiving larger cylindrical workpieces, a pair of smaller V-shaped openings in the side walls of the base for receiving smaller cylindrical workpieces, a cover attached to the base, and a rotatable, indexable drill bushing mounted to the cover. The larger and smaller V-shaped grooves intersect at a common workpiece center-line drilling point. Thumbscrews are provided to clamp the workpieces in the grooves. The drill bushing includes a series of different size drill guide holes spaced about the circumference of the bushing on a common radius for receiving predetermined drill bit diameters to guide the drill bits along their longitudinal axes during a drilling operation. The bushing has intersecting planar side faces and vertical edges which engage a raised indexing and locking block on the cover for locating and positively locking the bushing in place for the drilling operation. V-shaped stepped inserts can be mounted in the larger V-shaped groove in the base to allow for drilling of common sizes of channel steel, angle iron, and similar structural shapes.
    • 公开了一种用于在中心或离开中心钻出圆柱形或平坦工件的钻具。 该固定装置包括具有用于容纳更大的圆柱形工件的V形槽的底座,在基座的侧壁中的一对较小的V形开口,用于容纳更小的圆柱形工件,附接到基座的盖子和可转动的可转位 钻套安装在盖上。 较大和较小的V形槽在共同的工件中心线钻孔处相交。 提供指旋螺丝以将工件夹在槽中。 钻套筒包括一系列不同尺寸的钻孔引导孔,其围绕衬套的圆周在公共半径上间隔开,用于接收预定的钻头直径以在钻井操作期间沿其纵向轴线引导钻头。 衬套具有相交的平面侧面和垂直边缘,其接合盖上的凸起的分度和锁定块,用于定位并将衬套正确地锁定在适当位置用于钻孔操作。 V型阶梯式嵌入件可以安装在基座中较大的V形槽中,以允许钻通道钢,角铁和类似结构形状的常用尺寸。