曲柄半径误差建模及影响因素研究

发布时间：2018-06-04 18:36

本文选题：曲柄半径 + 误差建模　；参考：《组合机床与自动化加工技术》2016年10期

【摘要】：结合曲轴在加工过程中的综合受力,利用有限元仿真方法对曲轴各轴颈轴线在加工过程中的弹性变形进行了研究。根据随动磨削中曲轴及砂轮的运动情况,建立了曲轴曲柄半径误差分析模型,并通过MATLAB软件分析曲轴受力变化与曲轴曲柄半径缸间差异之间的影响关系。理论表明,增大顶尖力或减小磨削力有利于减小曲柄半径缸间差异。最后,通过验证实验证明了曲柄半径误差分析模型及理论分析的正确性。同时,考虑到磨削力变化对曲轴轴颈表面质量的影响,优先选择优化顶尖力以降低缸间差异的方法。
[Abstract]:Combined with the comprehensive force of crankshaft in the process of machining, the elastic deformation of each axis of crankshaft in machining process was studied by using finite element simulation method. According to the movement of crankshaft and grinding wheel in following grinding, a crankshaft crank radius error analysis model is established, and the relationship between crankshaft force change and crankshaft radius cylinder difference is analyzed by MATLAB software. The theory shows that increasing center force or decreasing grinding force can reduce the difference between crank radius cylinders. Finally, the correctness of the crank radius error analysis model and theoretical analysis is proved by the verification experiment. At the same time, considering the influence of grinding force on the surface quality of crankshaft journal, the method of optimizing the center force to reduce the difference between cylinders is preferred.
【作者单位】：上海交通大学机械与动力工程学院;上汽通用五菱汽车股份有限公司;
【基金】：基金项目:汽车发动机制造精度控制的“两微米”工程(2012BAF06B03)
【分类号】：TK406;TG580.6

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