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1. 发明授权

US4671709A Pot broach 失效
标题翻译：锅拉刀
公开(公告)号：US4671709A
公开(公告)日：1987-06-09
申请号：US855895
申请日：1986-04-24
申请人： Axel B. Abrahamsson , Eugene J. Bistrick , Harvey J. Yera , Margaret Wieczorek
发明人： Axel B. Abrahamsson , Eugene J. Bistrick , Harvey J. Yera , Margaret Wieczorek
IPC分类号： B23F21/26
CPC分类号： B23F21/268 , Y10T407/1642 , Y10T407/1671 , Y10T407/1685
摘要： A tooth broach designed for use with thin workpieces having its teeth arranged in circumferentially extending sets in each of which the teeth are arranged in groups of one or more teeth, and gaps devoid of teeth between adjacent groups. The teeth are further arranged in longitudinally extending series, in which consecutive teeth in each series are separated by gaps in the adjacent sets. This provides for reduced axial spacing between axially adjacent sets of teeth to maintain cutting action at all times with a thin workpiece.
摘要翻译：一种设计用于薄工件的齿形拉刀，其齿具有周向延伸的组，其中每个齿分别设置成一个或多个齿，以及相邻组之间没有齿的间隙。齿还进一步布置成纵向延伸的系列，其中每个系列中的连续齿由相邻组中的间隙分开。这提供了轴向相邻的齿组之间的减小的轴向间隔，以在所有时间用薄的工件保持切割动作。

2. 发明授权

US5435676A Two-stage broaching of engine block bearings 失效
标题翻译：发动机缸体轴承的两段拉削
公开(公告)号：US5435676A
公开(公告)日：1995-07-25
申请号：US183359
申请日：1994-01-19
申请人： Harvey J. Yera , Donald W. Mast
发明人： Harvey J. Yera , Donald W. Mast
IPC分类号： B23D37/00 , B23D37/04 , B23D41/00 , B23D43/02 , B23D37/22
CPC分类号： B23D43/02 , B23D37/04 , Y10T407/1671 , Y10T409/400175 , Y10T409/40385 , Y10T409/501804
摘要： A method and apparatus for broaching a series of axially aligned and spaced bores in which a first broach is provided for broaching in an initial operation. The first broach has circumferentially extending cutting teeth. The first broach also has arcuately spaced, longitudinally extending grooves which cross the cutting teeth and divide the cutting teeth into arcuate segments. Broach guides in the spaces between bores have ribs arranged in the same arcuately spaced relation as the grooves about an axis coinciding with the aligned axes of the bores. The first broach is advanced through the bores with the ribs slidably received in the grooves to guide the first broach and the cutting segments, broaching arcuately spaced sectors of the bores but leaving unbroached ridges therebetween. A second broach broaches the ridges left by the first broach.
摘要翻译：一种用于拉削一系列轴向对准和间隔开的孔的方法和装置，其中在初始操作中提供第一拉刀用于拉削。第一个拉刀具有沿周向延伸的切割齿。第一个拉刀还具有弓形间隔的纵向延伸的凹槽，其横切切割齿并将切割齿分成弧形段。在孔之间的空间中的拉杆导向件具有排列成与围绕与钻孔对齐的轴线重合的轴线的凹槽相同的弓形间隔关系的肋。第一个拉刀通过孔被推进，其中肋可滑动地容纳在凹槽中以引导第一拉刀和切割部分，拉出孔的弧形间隔开的部分，但在其间留下未经过的脊。第二个拉刀拉开第一个拉刀剩下的脊。

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