An optimization design method for a hypoid gear with high tooth was proposed based on the investigations into variations of working tooth height and constraint conditions of undercut.

通过增加工作齿高和对根切条件的深入研究，提出了高齿准双曲面齿轮的优化设计方法。

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The undercut of the involute sprocket is investigated to derive the minimum tooth.

对渐开线齿形链轮的根切状态进行了研究，求解了不发生根切的最小齿数。

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