基于一种柱塞缸的参数化设计方法研究

发布时间：2018-03-26 00:34

本文选题：快锻压机　切入点：液压缸　出处：《兰州交通大学》2016年硕士论文

【摘要】：随着制造业的飞速发展,锻造产业得到了大力提升,市场对各类锻件需求量的增加带动了快速锻造压机的发展。液压缸作为快速锻造压机的关键部件之一,其设计方式依然以反复计算来修正结构尺寸的传统设计方法为主,但这已不能满足企业对核心技术设计能力的要求,因此为了生产出性能更优的快速锻造压机,寻求液压缸的现代设计方法显得十分必要。本文就下拉式快锻压机主液压缸缸体在使用过程中缸体出现裂纹,开始渗油而无法继续正常使用的问题进行研究。通过对液压缸缸体法兰过渡区域进行分析,发现其法兰过渡区应力集中是影响缸体出现裂纹的主要原因。将下拉式快锻压机液压缸缸体原本的外斜直线-圆弧法兰过渡曲线改进为内凹直线圆弧过渡曲线,并按照实际工作状态,运用有限元分析软件对缸体法兰过渡区仿真分析,得到采用内凹直线圆弧过渡曲线的液压缸应力集中现象大大低于采用外斜直线-圆弧法兰过渡曲线的液压缸。结合现代计算机技术和优化理论,利用Visual Basic语言对SolidWorks软件和ANSYS软件进行二次开发,以下拉式快锻压机主液压缸为设计原型,采用外斜直线-圆弧法兰过渡曲线,搭建下拉式快锻压机主液压缸通用模型,实现了SolidWorks参数化模型建立和ANSYS结构优化设计的集成,开发出了简洁友好的人机对话界面,为下拉式快锻压机主液压缸的参数化设计方法提供了解决方案。在满足静强度和刚度要求的前提下,按照实际的工况,设定目标函数和约束条件,对不同吨位的下拉式快锻压机主液压缸进行优化设计验证,结果显示,该参数化优化设计方法高效可靠,极大地方便了设计人员,提高了下拉式快锻压机主液压缸的设计效率,为下拉式快锻压机主液压缸的设计提供更加有效、准确的设计依据。
[Abstract]:With the rapid development of manufacturing industry, the forging industry has been greatly promoted, and the increase of market demand for all kinds of forgings has led to the development of rapid forging press. The hydraulic cylinder is one of the key components of the rapid forging press. The design method is still based on the traditional design method of modifying the structure size by repeated calculation, but it can not meet the requirements of the core technology design ability of the enterprise. Therefore, in order to produce a fast forging press with better performance, It is very necessary to seek the modern design method of hydraulic cylinder. In this paper, there are cracks in the cylinder block of the main hydraulic cylinder of the pull-down fast forging press. The problem that the oil is seeped and can not continue to be used normally is studied. Through the analysis of the flange transition area of the cylinder block, It is found that the stress concentration in the flange transition zone is the main reason that affects the cracks in the cylinder block. The original external oblique straight-arc flange transition curve of the hydraulic cylinder block of the pull down fast forging press is improved to the concave linear arc transition curve. According to the actual working state, the finite element analysis software is used to simulate the flange transition zone of cylinder block. It is obtained that the stress concentration of hydraulic cylinder with concave straight arc transition curve is much lower than that with external oblique straight line arc flange transition curve, combining with modern computer technology and optimization theory, The second development of SolidWorks and ANSYS software is carried out by using Visual Basic language. Taking the main hydraulic cylinder of the pull-down fast forging press as the design prototype, the general model of the main hydraulic cylinder of the pull-down fast forging press is built by adopting the transition curve of the external oblique straight-arc flange. The integration of SolidWorks parameterized model building and ANSYS structure optimization design is realized, and a simple and friendly man-machine dialogue interface is developed. It provides a solution for the parameterized design of the main hydraulic cylinder of the pull down fast forging press. On the premise of satisfying the static strength and stiffness requirements, the objective function and constraint conditions are set according to the actual working conditions. The optimization design of the main hydraulic cylinder of the pull-down fast forging press with different tonnage is verified. The results show that the parameterized optimization design method is efficient and reliable, which greatly facilitates the designer and improves the design efficiency of the main hydraulic cylinder of the pull-down fast forging press. It provides a more effective and accurate design basis for the design of the main hydraulic cylinder of the pull-down fast forging press.
【学位授予单位】：兰州交通大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG315

【参考文献】