1、 I 十字轴锻造成形工艺研究及模具设计十字轴锻造成形工艺研究及模具设计 摘摘 要要 近几年，随着经济和汽车行业的快速发展，十字轴作为传动系统的重要组成部分， 应用越来越广泛，地位也越来越重要。 本文主要以十字轴为研究对象，十字轴是汽车底盘中的一个十分重要的传力零件， 产品质量要求高，形状复杂。以目前国内普遍应用的热锻工艺为研究前提，运用 UG、 DEFORM-3D软件系统的研究十字轴的成形过程和模具设计。 首先采用 UG或 Pro/E三维造型软件对十字轴进行三维实体化造型。利用 DEFORM-3D有限元模拟软件对十字轴的成形过程进行模拟。分析应力状态和载荷-行 程曲线。基于模拟结果，分析十字轴
2、预锻成形过程中所出现的问题，提出模具设计的 改进建议。从数学模型上给出了指导，得出了优化的工艺参数，设计出合理的模具型 腔。利用 UG的实体造型功能建立十字轴的三维模型。 关键词关键词：十字轴；数值模拟；预锻变形；有限元；成形工艺 II Study on Forming Process and Die Design for Crossing Shaft ABSTRACT In recent years, with the development of economy and automotive industry, as the main basis of mechanical parts,
3、the cross shaft of an ever-increasing status is also becoming increasingly important. This article mainly takes cross shaft as the research object. The cross shaft is automobile chassis of a very important force transmission parts, products of high quality requirements, complex shape.UG, DEFORM-3D a
4、s a platform, and has done some research on mould design and FEM simulation, on the base of forge hot process which is widely used in local plant. First, using UG or Pro/E three-dimensional modeling software for 3D modeling of the cross shaft.The finite element simulation software DEFORM-3D is used
5、to simulate the forming process of the cross shaft. And analysis the stress distribution and the metal load-trip curve. According to the result of the simulation, the problem in the Pre-forging has been analysed with some instructive suggestions for die designing put forward. Guidance is given from
6、the mathematical model, then the optimized parameters, design of mould cavity and reasonable. A three-dimensional model of cross shaft using a solid modeling function of UG. Key Words: cross shaft；numerical simulation；Pre-forging process；finite element method；forming process III 目目 录录 摘摘 要要 .I ABSTRACT II 引引 言言 - 1 - 第第 1章章 绪绪 论论 - 2 - 1.1 研究现状和发展趋势 . - 2 - 1.2 研究意义（价值）及主要内容 . - 3 - 第第 2章章 设计研究方案设计研究方案 . - 4 - 2.1 对课题的认识 . - 4 - 2.2 课题的研究方法 . - 5 - 2.3 热模锻成形工艺 . - 6 - 2.3.1 模锻的特点 . -
