连杆工艺设计及有限元分析（含全套CAD图纸）.doc

摘要
连杆是发动机内部的重要零件,连杆的作用是将活塞的往复运动转变为曲轴的旋转运动,并把作用在活塞组上的燃气压力传给曲轴。连杆的作用是把活塞和曲轴联接起来,使活塞的往复直线运动变为曲柄的回转运动,以输出动力,因此,连杆的加工精度将直接影响柴油机的性能,而工艺的选择又是直接影响精度的主要因素。连杆在工作中,除承受燃烧室燃气产生的压力外,还要承受纵向和横向的惯性力。因此,连杆在一个复杂的应力状态下工作。它既受交变的拉压应力、又受弯曲应力。
本次毕业设计针对汽车发动机连杆进行工艺设计编制及有限元分析。涉及连杆的选材、确定毛坯、拟定工艺路线、选择工艺设备。本论文通过CAD,PROE,ANSYS等对连杆进行了绘制与分析,并且对连杆的加工工艺进行了编制。得到了工艺过程和连杆的有限元分析。
关键字:连杆,工艺编制,有限元分析
ABSTRACT
Internal parts of the engine is an important link, the link is to effect reciprocation of the piston into rotary motion of the crankshaft, and the piston acting on the gas pressure to the crank set. Role of the piston rod and the crankshaft are coupled together, the reciprocating linear motion of the piston into rotary motion of the crank to the output power, therefore, the connecting rod will directly affect the precision of the performance of the diesel engine, and the process selection is direct The main factors that affect the accuracy. Link at work, in addition to withstand the pressure generated bustion of gas, but also to withstand the longitudinal and transverse inertia force. Thus, the link to work in plex stress state. Both by alternating tension pression stresses, but also by bending stresses.
The graduation project preparation process design and finite element analysis for automotive engine connecting rod. Selection involves connecting rod to determine the rough, develop process route, select process equipment. In this thesis, CAD, PROE, ANSYS, etc. on the link were drawn and analyzed, and the process for connecting rod were prepared. And by a process of finite element analysis of the connecting rod.
KEY WORDS: connecting rod,process planning ,finite element analysis

目录
第一章绪论 - 5 -
- 5 -
- 5 -
- 6 -
第二章连杆的工艺编制 - 8 -
连杆的结构分析 - 8 -
- 8 -
连杆的工艺分析 - 8 -
连杆的材料和毛坯选择 - 10 -
连杆机械加工工艺过程 - 11 -
- 12 -
- 12 -
- 13 -
- 13 -
连杆大小头孔的加工 - 15 -