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1、汽车连杆零件的锻模设计（锻模毕业设计论文） 学科门类： 单位代码 ： 毕业设计说明书（论文）汽车连杆零件的锻模设计学生姓名所学专业 班 级 学 号 指导教师 XXXXXXXXX系二*年XX月目录中文摘要 1英文摘要 11 绪论31.1 问题的提出及研究意义31.2 国内外研究状况 32 模锻工艺简述2.1模具对金属变形的影响 42.2模锻的分类及各自的特点 5开式模锻5 闭式模锻5 挤压6 顶镦63 工艺性分析及工艺方案的选择63.2汽车连杆工艺方案选择74 汽车的工艺参数设计计算.1 锻件图设计84.2 计算锻件主要参数 104.3锻锤吨位的确定104.4确定飞边槽的形式和尺寸10置10差和
2、余量104.5终锻模膛设计114.6钳口的设计124.7 预锻模膛设计124.8绘制计算毛坯图134.9确定坯料尺寸145 锻造模具的设计145.1模具设计的基本作用145.2降低模具生产成本的措施155.3模具的重要作用175.4模具的设计175.5模具的设计175.6模具材料的选取185.7锻造模块的确定185.8、燕尾及键槽的选186 汽车连杆成形工艺过程分析 186.1 毛坯的制备186.2润滑剂的选用196.3模具的预热206.4锻造温度范围的确定207 结论与展望217.1主要结论217.2后续研究工作的展望218 心得与体会22致谢23参考文献23谢谢朋友对我文章的赏识，充值后就
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4、是汽车发动机中的重要零件，它连接着活塞和曲轴，其作用是将活塞的往复运动转变为曲轴的旋转运动，并把作用在活塞上的力传给曲轴以输出功率。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。?连杆的主要损坏形式是疲劳断裂和过量变形。通常疲劳断裂的部位是在连杆上的三个高应力区域。连杆的工作条件要求连杆具有较高的强度和抗疲劳性能；又要求具有足够的钢性和韧性。连杆材料一般采用45钢、40r或40MnB等调质钢。合金钢虽具有很高强度，担对应力集中很敏感。所以，在连杆外形、过度圆角等方面需严格要求，还应注意表面加工质
5、量以提高疲劳强度，否则高强度合金钢的应用并不能达到预期果。Abstract Linkage is the engine of high-precision precision components, the strength of higher demand, a car engine in one of the important parts, known as the security case, its direct impact on the quality of motor vehicles and the security of the whole Use and traffic.
6、 Link directly related to the quality of its cross-section of part of the round or more for the shape, at both ends of a hole, the hole with bronze bushings or needle roller bearings for axle load and sales of property and life, forging Linkage with good mechanical properties and easy processing, th
7、e advantages of good quality surface, and the short production cycle, the production process stability. Linkage with the two ends of the active and passive components hinged to convey movement and of the bar. For example, in Reciprocating power machinery and compressors, with link to connect the Pis
8、tons and crank. Link for more steel parts, which constitute the main hinged. Linkage is important in the automobile engine parts, it connects with the Pistons and the crankshaft, the Pistons will play the role of the reciprocating movement into the rotating crankshaft, and the role of the Detroit Pi
9、stons passed on the crank to power output. Link in their work, in addition to the gas chamber under pressure, we must also bear the vertical and horizontal inertial force. Therefore, the link in a complex work under stress. It subject, alternating the tension and compression stress, the bending stre
10、ss. Linkage is the main form of damage and excessive fatigue fracture deformation. Fatigue fracture is usually the site of the linkage of the three high stress on the region. Linkage of the terms and conditions of the link with high intensity and anti-fatigue properties and require adequate steel an
11、d toughness. Linkage of the general use of 45 steel, 40 Cr or 40 MnB, such as quenched and tempered steel. Although the strength of high-alloy steel, Tam is very sensitive to stress concentration. Therefore, the link shape, fillet over the areas to be strict requirements, attention should be paid to
12、 the surface processing to enhance the quality of fatigue, or the application of high-strength alloy steel and can not achieve the desired fruit. Linkage of production varied, the common mode for a one. For more than two-one for the introduction of the row. This article is more systematically on the car side-by-side double-linkage of the forging process and die design process, a mold and shape第一章 绪论1.1 问题的提出及研究意义常规的连杆制造工艺难以满足现代社会的要求，也难以适应这个竞争日趋激烈的社会。因此，生产出尽可能的强度高、力学性能好，表面质量好，易于加工、生产周期短、成本低的连杆已经成为我们的迫切需求。我国汽车连杆以前