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4. 发明授权

US4945783A Ring gear with roll formed teeth 失效
标题翻译：齿轮与滚齿形齿
公开(公告)号：US4945783A
公开(公告)日：1990-08-07
申请号：US322094
申请日：1989-03-09
申请人： Benjamin Grob
发明人： Benjamin Grob
IPC分类号： F16H55/17 , B21D22/00 , B21D53/28 , B21H5/02 , F16H55/06
CPC分类号： F16H55/06 , B21D53/28 , B21H5/02 , Y10T29/49467 , Y10T74/19963
摘要： A cold-formed ring gear is made from a relatively thin circular metal body, the outer peripheral edge of which is preformed to define a radially inwardly opening U-shaped channel in the outer surface of which the gear tooth pattern is subsequentially cold rolled using a known method and tooling. The unique preformed plate body obviates the need for a grooved interior supporting mandrel and results in a toothed rim of substantially enhanced strength and rigidity. The gear tooth pattern which is cold rolled in the preform provides tooth faces of substantially enhanced width and depth relative to the width and thickness of the base material from which they are formed. All of the other known advantages of cold formed teeth, as opposed to conventional cut teeth, are also realized.
摘要翻译：冷成型的环形齿轮由相对薄的圆形金属体制成，其外周边缘被预成形以在其外表面中限定径向向内开口的U形通道，其中齿轮齿形图案使用已知的方法和工具。独特的预制板体消除了对带槽的内部支撑心轴的需要，并且导致具有显着增强的强度和刚度的齿形边缘。在预制件中冷轧的齿轮齿图案相对于形成它们的基材的宽度和厚度具有基本上增强的宽度和深度的齿面。与常规切割齿相对的冷成形齿的所有其它已知的优点也被实现。

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