【作者】 程坤；

【导师】 王卫荣；

【作者基本信息】 合肥工业大学 ， 机械设计及理论， 2005， 硕士

【摘要】 课题以PCR-80冷辗扩机为研究对象,对冷辗扩机辗压轴承套圈的冷辗过程进行了分析,建立了冷辗扩机主轴、芯辊、支撑轴在稳态辗压时的受力分析模型,进而提出冷辗扩机中各轴受力分析的计算方法。 利用三维SolidWorks软件建立了冷辗扩机整机的三维CAD模型。通过计算机仿真技术,运用ANSYS软件,对冷辗扩机进行有限元静力分析和模态分析。指出结构刚度中存在的薄弱环节以及机床在工作时产生振动、影响机器性能的原因,为冷辗扩机的改进设计提供参考依据。 在有限元分析结果的基础上,研究了各轴相对位置与各轴刚度的关系,提出各轴刚度的进一步改进设计方案。并运用综合加权评分法研究了各轴的刚度对冷辗扩机总刚度的影响,提出冷辗扩机的最佳改进方案。通过改进前后方案的比较表明:改进后的冷辗扩机三轴的总刚度有明显提高,为改进冷辗扩机各轴的刚度、提高产品质量提供了科学依据。更多还原

【Abstract】 This thesis is concerned with the study of PCR-80 cold rolling machine. The calculation method of forces on axes of rolling machine is brought out based on the analysis of cold rolling process of bearing rings and the force analysis model of the principal axis,roller,supporting axis at stable rolling time.The three dimensions CAD software SolidWorks is used to make the model of the total rolling machine. At the same time, the finite element analysis software ANASYS is used to make force analysis and modal analysis of the machine based on computer simulation technique. The structure rigidity weak points and the causation of vibration, effects of the performance of the machine at working time are brought out as reference of optimal design of the rolling machine.The relationship of relevant position and the rigidity of the axes are researched based on the results of finite element analysis. The best design plan is derived from the study of the total machine rigidity that effected by the changing of axes rigidity by the method of integration weighted point rating. As can be seen from the comparison with the design plan before betterment, the rigidity of three axes of cold rolling machine has been improved obviously. It’s a scientific reference to improve the rigidity of cold rolling machine axes and the quality of products.更多还原