齿轮成形磨削加工热力耦合数值仿真研究

发布时间：2018-06-18 01:43

本文选题：成形磨齿加工 + 有限元模型　；参考：《合肥工业大学学报(自然科学版)》2015年10期

【摘要】：齿轮成形磨削加工为齿轮精加工工艺,在高速成形磨削加工过程中,会产生大量的热。一方面这些磨削热会在齿轮表面产生较高的温度,容易引起工件表面烧伤;另一方面磨削热会在工件表层产生梯度变化较大的温度场,从而形成磨削残余应力,造成工件表层金相组织变化,既会影响齿轮磨削加工的精度,也会影响齿轮使用的寿命。文章借助工程分析软件Abaqus和Matlab,基于磨削移动热源理论和三角形热源分布模型,通过磨削接触长度计算,建立了齿轮成形磨削三维温度场仿真模型;利用热-力耦合分析方法,得到齿轮磨削热应力和应变的数值仿真云图,实现齿轮成形磨削加工温度场及热变形的精确分析,对提高齿轮成形磨削加工精度具有一定的理论意义。
[Abstract]:Gear forming grinding is a gear finishing process, which produces a lot of heat in the high speed forming grinding process. On the one hand, these grinding heat will produce higher temperature on the surface of the gear, which will easily cause burn on the surface of the workpiece; on the other hand, the grinding heat will produce a gradient temperature field on the surface of the workpiece, resulting in grinding residual stress. The change of metallographic structure of workpiece not only affects the precision of gear grinding, but also affects the service life of gear. With the help of engineering analysis software Abaqus and Matlab, based on the theory of grinding moving heat source and triangular heat source distribution model, the three-dimensional temperature field simulation model of gear forming grinding is established by calculating the grinding contact length, and the thermal-mechanical coupling analysis method is used. The numerical simulation cloud diagram of the thermal stress and strain of gear grinding is obtained, and the accurate analysis of the temperature field and thermal deformation of gear forming grinding is realized, which is of certain theoretical significance to improve the machining accuracy of gear forming grinding.
【作者单位】：合肥工业大学机械与汽车工程学院;
【基金】：国家重大科技专项资助项目(2012ZX04001021)
【分类号】：TG580.6

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