The forming principle of Niemann worm wheel hob is described, the curved face equation of Niemann worm is deduced, and the normal profile of the worm wheel hob is calculated.
论述了尼曼蜗轮滚刀的成形原理，推导了尼曼蜗杆曲面方程，计算了蜗轮滚刀的法向齿形。
The forming principle of Niemann worm wheel hob is described, the curved face equation of Niemann worm is deduced, and the normal profile of the worm wheel hob is calculated.
论述了尼曼蜗轮滚刀的成形原理，推导了尼曼蜗杆曲面方程，计算了蜗轮滚刀的法向齿形。
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