This paper analyzes gear failure resulted by damage of teeth surface and puts forward some methods improving touch strength of gear.

对齿轮齿面损坏造成的齿轮失效进行了分析，并提出了一些提高齿轮接触强度的方法。

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It also expounds influences of hardness and roughness of teeth surface, lubrication, running-in before use on touch strength of gear.

强调了齿面硬度、面粗糙度、滑情况、用前磨合情况等对齿轮接触强度的影响。

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Because of the tooth thickness of the dedendum is larger than that of the common involute gear and the Pitchs do not contact each other, the beam strength and surface strength of tooth are increased.

由于该齿轮的齿根厚度比普通渐开线齿轮的齿根厚，并且节点附近不相接触，因此，其轮齿弯曲强度和接触强度都提高。

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