谐波减速器柔轮冷滚工艺及残余应力数值模拟

发布时间：2018-06-13 02:02

本文选题：柔轮 + 冷滚压工艺模型　；参考：《华南理工大学学报(自然科学版)》2017年02期

【摘要】：针对柔轮工作性能的特殊要求,分析并优化了传统柔轮冷滚压工艺模型,柔轮采用双圆弧齿廓曲线模型;依据修正的Johnson-Cook本构模型建立柔轮冷滚压成形有限元模型并加以验证。仿真结果表明,采用该模型能得到清晰的双圆弧齿形和较均匀的等效应变分布。文中还分析了不同工艺参数(进给速度、滚轮转速及摩擦系数)对柔轮轮齿表面残余应力的影响,结果表明:增大进给速度会降低轮齿表面的残余应力最大值,过大的进给速度会造成"凸起";适当降低滚轮转速和进给速度,可提高残余应力分布的均匀性;摩擦系数与残余压应力分布深度正相关.
[Abstract]:In view of the special requirements of the flexible wheel working performance, the traditional cold rolling process model of the flexible wheel is analyzed and optimized. The flexible wheel adopts the double arc tooth profile curve model, and the finite element model of the cold rolling forming of the flexible wheel is established and verified according to the modified Johnson-Cook constitutive model. The simulation results show that the model can get a clear double arc tooth shape and a clear double arc tooth shape. The effect of different process parameters (feed rate, roller speed and friction coefficient) on the residual stress on the surface of the gear wheel is also analyzed. The results show that increasing feed speed will reduce the maximum residual stress on the tooth surface, and the excessive inlet velocity will cause "protruding", and the roller speed and speed will be reduced properly. The uniformity of residual stress distribution can be increased by velocity, and the friction coefficient is positively correlated with the depth of residual compressive stress distribution.
【作者单位】：华南理工大学机械与汽车工程学院;
【基金】：广东省科技计划项目(201605131317517)~~
【分类号】：TG306

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