五菱凸缘叉锻件成形设计-毕业论文（设计）.doc

PAGE 材料成型及控制工程专业本科毕业论文 论文题目：五菱凸缘叉锻件成形的工艺研究 学生姓名 ： 学 号 ： 指导教师 ： 专 业 ：材料成型及控制工程 年 级 ：200x级 学 校 ： 河南理工大学 河南理工大学2013届本科毕业论文（设计） PAGE III 摘要 本课题主要研究凸缘叉的锻造成形工艺。首先分析锻件图并利用Pro/ENGINEE软件对锻件进行三维建模，然后根据锻件模型生成终锻模具,并开设飞边槽。由锻件的相关信息确定初始毛坯尺寸,接着运用数值仿真模拟技术分析其能否一次锻造而成.因为该锻件为短轴分叉类，并且凸缘较高,进而凸缘顶部与侧壁凹陷处很难充满,无法一次成形。故依据锻件形状特点，设置锻造工步为加热→镦粗制坯→预锻→终锻→精整，经过多次的模拟优化，确定了各工步的工艺参数，获得了良好的模拟效果。因此,最终设计生产该锻件的热加工工序为加热→镦粗制坯→预锻→终锻→精整。 本次设计模拟分析了凸缘叉的热成形过程，确定了其热加工工艺参数和加工过程中的变形规律，这为提高材料的组织性能，避免缺陷的产生将会大有帮助。 关键词：锻件; 突缘叉; 数值模拟; 热加工 Abstract The paper mainly concentrates on the researching and simulating of the forging process of the flange yoke.In the first ,analyzing forging drawing and setting up the three-dimensional model of forging by using the Pro/ENGINEER software, then the final forging die is generated according to the model and the gutter is setted up at the same time. the initial blank size are determined by the relevant information of forging and the numerical simulation is used to analysis whether the forging can be made by once shaping. Because the top flanges and side wall recess of the forging with short shaft ,complex fork is difficult to fill in, it cannot be directly forged. So according to the shape features, the forging steps setted are heating→ upsetting forming→perform-forging →finish -forging→ finishing . Through several simulation and optimization ,the process parameters of each step are determined and the forgings with the excellent quality are obtained ,too. Finally, the step of thermal processing production of the forgings determined are heating→ upsetting forming→perform-forging →finish-forging →finishing. This design analyses and simulates the hot forming process , gets the thermal process parameters and the deformation law in the process ,which will be of great help to improve the microstructural properties of materials and avoid the defects . Keywords: forging; the flange yoke; numerical simulation ;thermal processing  目录 TOC \o 1-3 \h \z \u HYPERLINK