矿山用合金齿系列：球形齿、锥形齿、平顶齿、梅花齿等。

Gears for mines: Ball type gear, taper type gear, flat top gear and plum type gear.

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建立了牙轮钻头的球形齿、楔形齿和勺形齿三维空间的几何模型；

Geometry model of roller bit's sphere tooth, wedgy tooth and bucket shape tooth were established;

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提出用球形蜗杆砂轮连续分度展成磨削内齿轮的概念，阐述了其磨齿原理。

A method for grinding internal gear using spherical worm emery-wheel is presented.

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