Oval gear - Oval gear

Japanese: オーバル歯車 - おーばるはぐるま
Oval gear - Oval gear

…Eccentric gears are two involute gears of the same shape and size, each with the same eccentricity of the center of rotation, as shown in Figure 6-k. Even if gear O1 rotates at a constant speed, the other rotates at a periodic non-uniform speed. Noncircular gears include oval gears and elliptical gears, as shown in Figures 6-l and m. Both are elliptical gears, but the positions of their centers of rotation are different. …

* Some of the terminology that refers to "oval gears" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…偏心歯車は,同形,同大のインボリュート歯車2個を,図6‐kに示すようにそれぞれ回転の中心を同じ量だけ偏心させて組み合わせたもので,歯車O1を等速回転運動させた場合でも,他方は周期的な不等速回転運動を行う。非円系歯車には,図6‐lとmに示した,オーバル歯車,楕円歯車などがある。両方とも楕円形をしている歯車であるが,回転中心の位置が異なっている。…

※「オーバル歯車」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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