汽车前轴锻造工艺改进研究

Research on forging process improvement of automobile front axles

前轴是汽车底盘系统的重要安全零件,前轴的生产多采用热模锻的生产工艺,新开发的前轴锻件需要经过台架试验、道路试验,达到强度和疲劳寿命指标才能批量生产。从汽车前轴锻压机模锻工艺的设计、生产过程的控制方面考虑,介绍了机械压力机前轴锻造自动生产线锻造工艺的改进研究,其内容包括:锻件图设计中几个主要部位的设计方法;机械加工余量及技术条件的规定;坯料尺寸的确定;模具设计的改进;模具失效原因的确定及模具寿命的提高方法等。汽车前轴锻造企业在生产过程中逐渐积累经验,在不断改进的过程中,建立了前轴锻造工艺数据库,提高了前轴类新产品开发的速度,生产线的效率明显提升,获得了稳定的锻件质量和较低的生产成本。

Front axle is one of the important safety parts for chassis system.The hot die forging process is mostly adopted to produce the front axle.Provided that the strength and fatigue requirement could be met,the bulk production for new type of product could be carried out through the fatigue and road test.Therefore,taking the consideration of the die forging press process design and production procedure control of front axle,the improved research of forging process of automatic production line for the front axle was introduced,such as design method of some key positions,machining tolerance and technical specifications,billet size,improvement in tooling design,reason confirming of tooling damage,and methods to raise die life,etc..For the front axle producers,the processing database was set up through accumulating practical experiences which could increase the developing speed and production efficiency,keep good and stable quality and reduce the cost.