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为了研究重载齿轮淬硬层内的应力分布特性,建立了某轮式装载机轮边减速器太阳轮与行星轮齿轮单齿啮合的实体几何模型,通过布尔运算将几何模型切分成淬硬层和非淬硬层区域,根据淬硬层和非淬硬层的应力特点制定出不同的网格划分方案,经接触非线性有限元分析得到淬硬层齿面接触应力和齿根弯曲应力的分布规律及它们的应力梯度变化规律。利用淬硬层应力大小分布及应力梯度从齿面到芯部的衰减速率可以指导重载齿轮淬硬层的确定,从而提高重载齿轮的承载能力和使用寿命。
In order to study the stress distribution characteristics of heavy-duty gear hardened layer, a solid geometric model of the single-tooth meshing between the sun gear and the planetary gear of a wheel loader wheel rim reducer was established. The geometric model was divided into hardened layers According to the stress characteristics of hardened and non-hardened layers, different meshing schemes were developed. The contact stress of the hardened layer and the distribution of bending stress at the tooth root were obtained by contact nonlinear finite element analysis Laws and their stress gradient changes. The use of hardened layer stress distribution and stress gradient from the tooth surface to the decay rate of the core can guide the re-hardened layer heavy gear to determine, thereby enhancing the heavy-duty gear carrying capacity and service life.