In industry, absolutely smooth gear surface doesn’t exist. And almost all of the gears transmissions work in partial lubrication state,in which, there are not only lubrication oil film, but also asperities between teeth faces.
在生产实际中,绝对光滑的轮齿齿面是不存在的,几乎所有的齿轮传动都是在部分膜润滑状态下工作,即齿面啮合既有润滑油膜又有粗糙峰接触的混合状态。
参考来源 - 基于齿面粗糙度的齿轮传动热弹流润滑研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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