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1. 发明授权

US4461603A Drilling fixture 失效
标题翻译：钻具
公开(公告)号：US4461603A
公开(公告)日：1984-07-24
申请号：US359821
申请日：1982-03-19
申请人： George Klee , George R. De Noma , Stephen L. Collier , Rodney J. Newman
发明人： George Klee , George R. De Noma , Stephen L. Collier , Rodney J. Newman
IPC分类号： B23B47/28
CPC分类号： B23B47/281 , B23B47/28 , B23B2247/12 , B23B2247/18 , B23B2270/16 , Y10T408/55 , Y10T408/567
摘要： 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.
摘要翻译：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。

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