Study on Cylindrical Gears with Curved Tooth Traces. (Basic Characteristics and Tooth Contact Analysis).

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  • 曲線歯すじ歯車に関する研究　　（かみあい特性などについて）
  • キョクセン ハスジ ハグルマ ニ カンスル ケンキュウ カミアイ トクセイ ナド ニ ツイテ

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Abstract

In this study, a new type of cylindrical gears has been manufactured by use of CNC hobbing machine. This paper presents a detailed investigation on various characteristics of the gears with curved tooth traces. The contact ratio are calculated. The limits of undercutting and tooth pointing are determined. And then, the contact characteristics of the mating gears are analyzed by simulating the generation process and mating motion. Different contact patterns are presented as examples to show the changes of the contact area under different mating conditions. The mating gear teeth contact with each other at a line when there is no errors and no crowning. Three methods for generation of crowned gear tooth surface are proposed. Moreover, the influences on the bearing contacts by manufacturing error and misalignment are investigated.

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