圆弧齿轮的断面齿形为非共轭齿形，为了能达到连续而平稳的传动，就必须具备下列的运动特性。 齿廓为圆弧形的点啮合齿轮。圆弧齿轮传动通常有两种啮合形式，小齿轮为凸圆弧齿廓，大齿轮为凹圆弧齿廓，称单圆弧齿轮传动。
对比渐开线齿轮泵，单圆弧齿轮泵的瞬时排量与齿轮角速度成正比，且稳定，无脉动。
Comparing with involute gear pump, the instant displacement is in direct proportion to the angular velocity of the gear and stable without pulsation.
1971年起，我们首先在2400马力客货轮中采用单圆弧齿轮（不必磨齿）代替渐开线齿轮，使用到现在情况良好。
Early in 1971, we installed an experimental single circular-arc-profile gear in a 2400Hp pass- enger-cargo ship instead of an involute gear for the first time.
试图用尽可能快的速度、单、懂、行的方法设计出技术经济效果最佳的双圆弧齿轮传动。
It tryes to design double arc gear transmission of the best technology and economy effect making the best of speed, simpleness and understandability and feasible method.
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