摘要曲轴是柴油机最重要的零件之一。根据柴油机型式和性能的不同，曲轴的毛坯型式、结构、材料、外形尺寸、重量是不同的，从而决定了加工方式的不同。加之生产类型的不同，工艺流程的长短及工序细化的程度、自动化程度差别更大，但基本的工艺流程大致相同。49622

本论文采用Solidworks三维建模软件对曲轴进行三维造型，再将三维造型导入EdgeCAM自动编程软件中，并对曲轴进行特征捕捉，选择合适的刀具，对照特征一一生成刀具路径，通过模拟仿真确认无误后，则可以一键生成NC代码。最后将生成的代码导入到Vericut软件中进行数控加工仿真，以此来验证Edgecam生成的程序代码的正确性。在夹具方面，以往的曲轴加工大多在车床上采用偏心的方式进行装夹，而本文则是以三爪卡盘为主要夹具，使用五轴四联动车铣中心进行仿真加工的策略。

本设计的成果可应用到实际生产中，也可以给其他类型的设计与加工提供参考方案。

毕业论文关键词:曲轴；工艺；EdgeCAM；Solidworks；车铣复合中心；Vericut

Abstract The crankshaft is one of the most important accessories for diesel engine. The semi-finished product , the construction, the material, the size and the weight of the crankshaft depend on the requirements of the type and the function of the diesel engine, which determines the ways of processing . Additionally, different processing increases the difference of the process flow,the level of the process optimization and the automation. Nevertheless, the elementary process flow of it is the same.

This paper using 3D modeling software named Solidworks to 3D modeling of the crankshaft ,and then 3D modeling import the automatic programming software named Edgecam ,and crankshaft features to capture ,select the appropriate tool ,the control characteristics of generation of tool paths ,and confirmation through the simulation ,can be a key to generation NC code .Finally,the code into the software Vericut for NC machining simulation,in order to verify the correctness of the code .In the fixture ,the crankshaft machining in the past ,mostly in the lathe eccentric clamping . This article is based on four linkage jaw chuck as the main fixture ,using five-axis milling center simulation processing strategy.

The research of this subject can be subjected to the actual generation of improved application to other types of design and provide the reference scenario.

Keywords:crankshaft；design；process；Edgecam；Solidworks；Vericut

目    录  

第一章  绪  论 1

1.1 引言 1

1.2 曲轴工艺设计的意义及国内外加工技术展望 1

1.3软件介绍 1

1.3.1 Solidworks三维制图 1

1.3.2 Edgecam 自动编程 2

第二章  曲  轴 5

2.1 曲轴的作用 5

2.2 曲轴的主要结构及技术要求 6

2.2.1 曲轴的载荷 6

2.2.2 曲轴的性能要求 6

第三章  工艺过程设计 9

3.1 曲轴的工艺审查 9

3.2 选择毛坯 9

3.2.1 曲轴的材料 9

3.2.2 曲轴的毛坯类型及其制造工艺 10

3.2.3 曲轴毛坯的制造工艺分析