文档介绍：柴油发动机曲轴机械加工工艺规程设计及夹具设计
由吴祖德t053329 于星期五, 2009/06/19 - 12:41下午发表
学士学位
机电与汽车工程学院
学号: 
05120332
专业: 
机械设计制造及其自动化
研究方向: 
机械设计与制造
导师姓名: 
曾宏达
中图分类号: 
TH16
论文总页码: 
47
参考文献总数: 
20
曲轴是柴油发动机的重要零件。它的作用是把活塞的往复直线运动变成旋转运动,将作用在活塞的气体压力变成扭矩,用来驱动工作机械和柴油发动机各辅助系统进行工作。曲轴在工作时承受着不断变化的压力、惯性力和它们的力矩作用,因此要求曲轴具有强度高、刚度大、耐磨性好,轴颈表面加工尺寸精确,且润滑可靠。
本设计是根据被加工曲轴的技术要求,进行机械工艺规程设计,然后运用夹具设计的基本原理和方法,拟定夹具设计方案,完成夹具结构设计。主要工作有:绘制产品零件图,了解零件的结构特点和技术要求;根据生产类型和所在企业的生产条件,对零件进行结构分析和工艺分析;确定毛坯的种类及制造方法;拟定零件的机械加工工艺过程,选择各工序的加工设备和工艺设备,确定各工序的加工余量和工序尺寸,计算各工序的切削用量和工时定额;填写机械加工工艺过程卡片、机械加工工序卡片等工艺卡片;设计指定的专用夹具,绘制装配总图和主要零件图。
中文关键字: 
机械制造,加工工艺,曲轴,夹具
英文题目: 
Technological process design and fixture design of diesel engine crankshaft
英文摘要: 
Crankshaft is a very important parts of diesel engine. Ist action is change the to and fro straight-line motion of the piston into rotary motion,and change the gas pressure
on the piston into torque, that is used to drive executive body and accessory system of the diesel engine. Crankshaft is withstanding the changing pressure, inertia force and the torque. So the crankshaft mast have high strength, high rigidity, high abrasion resistance and the surface of axle journal must have high precision with well lubricating. This design is on the basis of technical requirement of the crankshaft to design the technological procedure. And then use the fundamental and method of the fixture design to fix the fixture design programme,plete the structural of the fixture. The main work is: Parts drawing, understand the characteristic of structure and technical requirement; Accroding to the types of manufacturing and the plant conditions of pany we will analyse the structure and craft of the crankshaft; Fix the type and manufacturing method of the roughcast; Fix the processing technic of the crankshft,select device and equipment fix the machining allowance and working procedure size and count the cutting specifications and time allowance.; Fix the Processing technological process car