用各种热处理方法使齿轮的齿面表层硬化,从而试图提高齿轮的接触疲劳强度.达到提高齿轮付传递的承载能力,已是目前国内外普遍采用的提高齿轮承载能力的工艺措施。我们把这种齿轮称为“硬齿面”齿轮,以区别于齿面不作特殊硬化处理的普通调质或正火齿轮的“软齿面”齿轮。目前发表的齿轮强度计算,其许用接触应力的计算依据是以表面硬度作为基准,表面硬 In order to improve the contact fatigue strength of gears, it is a common practice to increase gear carrying capacity both at home and abroad by using various heat treatment methods to harden the tooth surface of gears. We refer to this type of gear as a “hardened” gear to distinguish it from a “soft-toothed” gear of a conventional quenched or normalized gear whose tooth surface is not hardened. The current published gear strength calculation, the allowable contact stress is calculated based on the surface hardness as a benchmark, the surface is hard