1106014016韩飞毕业设计-说明书.doc

????? 11059 ??? 1106014016 ??????????????????????? BACHELOR DISSERTATION ??????????????????????????????????????????????????????????????????????????????????冲击载荷大、形状复杂的汽车前轴对强度、刚度和疲劳寿命的要求更苛刻, 因为它的质量直接或间接的影响到汽车的驱动系统的平稳性和车辆荷载的安全行驶。所以必须通过模锻成形来热模锻卡车和大型客车的前轴,来确保零件的强度和疲劳寿命指标。热模锻,是锻造工艺技术的一种,一般是指将金属毛坯加热至高于材料再结晶温度,利用模具将金属毛坯塑性成形为锻件形状和尺寸的精密锻造方法。现在, 120 MN 热模锻压机作为一个整体模锻汽车前轴的生产工艺越来越普遍, 并明显提高了工艺和模具设计的水平。但为了达到提高产品质量和降低生产成本的要求, 单件重量超过 95k g 的卡车前轴和载货汽车前轴, 在生产过程中还存在不少困难和问题。这篇文章是以典型载货汽车前轴作为对象,来分析和介绍 G312 汽车前轴的模锻工艺和模具设计。关键词:汽车前轴;热模锻;模具设计;热校正;热处理 Automobile F ront A xle H otD ing P rocess D esign ABSTRACT Impact load, complex shape front axle strength, stiffness and fatigue life requirements for more demanding, because safe driving stability and vehicle affect its quality is directly or indirectly to the car's drive system load. It must be shaped tohot forging axle trucks and large buses by swaging, to ensure the strength and fatigue life of the ponents. Hot forging, a forging technology, generally refers to the metal blank is heated toa temperature above the recrystallization temperature of the material, the use of metal mold plastic forming blank forging method for precision forging shapes and sizes. Now, 120 MN hot die forging press die forging of automobile front axle production process asa whole is ing mon, and improve the level of technology and die design. But in order to improve product quality and reduce production costs, for more than 95kgof truck front axle and truck front axle, many difficulties and problems still exist in the process of production. This article is based ona typical truck front axle as an object, to analyze and introduce G312 die forging technology and die design of automobile front axle. KEY WORD : Automobile front axle ; Hot - die forg e; Design of die ; Thermal correction ; Heat treatment 目录第一章绪论......................................................................................................................................................... 1 课题的背景