渐开线直齿轮齿面磨损对接触载荷的影响  

Influence of Tooth Surface Wear on Contact Load of Spur Gears

作　　者：周亚田 张瑞亮[1] 王铁[1] 王凯达 ZHOU Ya-tian;ZHANG Rui-liang;WANG Tie;WANG Kai-da(Gear Research Institute,Taiyuan University of Science and Technology,Shanxi Taiyuan 030024,China)

机构地区：[1]太原理工大学齿轮研究所,山西太原030024

出　　处：《机械设计与制造》2021年第7期58-61,共4页Machinery Design & Manufacture

基　　金：山西省自然科学基金(201801D121181)。

摘　　要：齿面磨损会改变齿廓形状从而导致接触状态发生改变,进而影响齿轮的动态特性和使用寿命等。针对渐开线直齿圆柱齿轮,基于Hertz理论和Archard公式建立磨损模型,并数值仿真了齿廓各点的磨损深度分布。计算表明,从齿根到齿顶磨损深度先减小后增大,在节点处磨损深度最小,在小齿轮的齿根处磨损深度最大,齿顶次之。在此基础上进一步探讨磨损对齿面接触载荷的影响,结果表明:随着磨损深度的增加,双齿啮合区齿面载荷波动增加,单双齿交替点载荷突变减小。靠近齿根的双齿啮合区接触载荷先减小后增大,靠近齿顶的双齿啮合区接触载荷先增大后减小。该结论可以为进一步研究齿轮磨损影响因素进而提高齿轮的使用寿命提供理论支撑。Tooth surface wear can change the shape of tooth profile and lead to change in contact condition,which affects the dy⁃namic characteristics and service life.The wear model for involute spur gear is established based on Hertz theory and Archard’s formula,and the wear depth distribution of each point on tooth profile is simulated numerically.The calculation shows that the wear depth decreases firstly and then increases from the root to the top of the tooth,and wear depth reaches the minimum at the pitch point and the maximum at the root of the pinion.On this basis,the influence of wear on the tooth surface contact load is fur⁃ther discussed.The results show that as the wear depth increases,the fluctuation of tooth surface load in the double tooth-mesh⁃ing region becomes larger,and the sudden change of alternating point of single and double tooth-meshing region decreases.The contact load in the double tooth-meshing region near the tooth root firstly decreases and then increases,the contact load of the double tooth-meshing zone near the tooth tip firstly increases and then decreases.The conclusion can provide theoretical support for further study about the factors affecting gear wear and improving the service life of gears.

关 键 词：直齿轮 齿面磨损 接触载荷 

分 类 号：TH16[机械工程—机械制造及自动化] TH117.1