GO汽油机缸体前面加工工艺及工艺装备设计.docx

PAGE / NUMPAGES 摘要 发动机作为汽车的心脏,其制造质量直接影响着汽车的使用性能。缸体作发动机各机构及各系统的装配基础零件,其制造精度对发动机的整体性能有着重要的影响。要提高发动机的使用性能,就必须控制发动机制造过程中关键零件的加工精度与加工质量。 随着我国经济的发展,国内对汽车的需求大量增加,怎样提高汽车产品零部件的生产效率和加工质量,成为了汽车行业发展至关重要因素。发动机缸体是汽车五大部件之一,它的生产效率和加工质量直接影响到汽车的生产效率和性能。发动机缸体的传统提高生产效率和加工质量的方式是尽量缩短辅助时间和采用刚性生产线,这种方式在今天已经不适应生产的发展。因此,在汽车行业中,怎样提高发动机缸体生产效率和加工质量是一项重要的研究课题。 本论文主要对GO汽油机缸体前面加工工艺及工艺装备进行设计,发动机缸体属于箱体类零件,结构复杂,加工易变形,因此加工精度要求高。由于缸体各个结合面面积较大,且有较高的位置精度和粗糙度的要求；缸体的加工部位多、加工要求较高、工艺路线长、工件输送较难处理、使生产管理上较繁杂,对缸体进行加工时采用专用机床加工,不仅能够改善加工质量而且能够极大提高加工效率。论文主要对GO汽油机缸体前面进行工艺规程设计,夹具专用设计和夹紧力计算。 关键词:发动机缸体工艺规程专用夹具 Abstract The quality of the engine’s manufacturing influenced the performance of the car, as the engine is the heart of the motor vehicles. The accuracy of the manufacturing of the engine block has an important relationship with the overall performance, because the engine block is the fundamental part in the system of the engine. We have to control the machining accuracy and machining quality. With the development of our economy and rapidly growing demand for cars in China, how to improve the production efficiency and processing quality of auto parts, is crucial to the development of automobile industry. Engine cylinder block is one of the five major parts, and its production efficiency and processing quality are directly related to production efficiency and performance of the car. The traditional method to improve production efficiency and processing quality is trying to shorten the auxiliary time and adopt the way of a rigid line, which is already out of date in the current production. Therefore, how to improve the efficiency of engine cylinder block production and processing quality is an important research, and the WD615 engine used in heavy vehicles, including all kinds of engineering machinery, buses, power generation equipment, ships and other ideal power of engine, its cylinder processing design has greater significance. In this paper, we focus on the first step of the process and made research on the pro