三维零件图外侧
CAD与CAM技术在数控加工中的应用
--典型汽车零部件的CAM编程(汽车变速器下箱体)
摘要
CAD/CAM技术作为提高企业设计效率、减轻技术人员的劳动强度,优化设计方案的强有力手段,已经成为现代制造系统中的关键技术,它的应用和发展直接影响着现代制造系统的最终功能及实现。对于典型汽车零部件这样的复杂机械零件的加工来说,传统的手工编制程序的方法已不能满足企业生产的要求。CAD/CAM技术的实现将加快企业生成产自动化的步伐,提高企业的经济效益和社会效益。
本文研究汽车手动变速器下箱体的数控加工。实现汽车手动变速器下箱体的数控加工,关键是进行数控编程,而数控编程的关键是对箱体进行数控加工工艺分析。因此,本文在创建CAM加工操作之前,对箱体的数控加工工艺性进行了全面分析。在对箱体进行数控加工工艺分析之前,有必要先对其工作环境和工作原理进行了解,以便弄清楚箱体中哪些是重要表面,哪些是重要尺寸,哪些是主要基准等主要内容。
关键词:计算机辅助制造;数控加工;自动编程
The Application of CAD/CAM in NC Machining
--Typical Automobile Parts CAM Programming(box)
ABSTRACT
CAD/CAM technology is strong means in improve the design efficiency, reduce the labor intensity of technical personnel, and optimize the design scheme, it has become a key technology in the modern manufacturing system, the application and development of it directly affects the final function and realization of the modern manufacturing system. For automobile parts such typical complex mechanical parts processing, the traditional manual programming method cannot meet the requirements of enterprise production. The realization of the CAD/CAM technology to accelerate the pace of enterprises produce production automation, improve enterprise economic benefit and social benefit.
In this paper,we study the car frame of nc machining under manual transmission. Implementation under the car manual transmission box of nc machining, the key is to nc programming, the nc programming is the key to nc machining process analysiswas carried out on the box body. Therefore, this article before create a CAM machining operations, nc machining technology has carried on the comprehensive analysis of the box body. Before the nc machining process analysiswas carried out on the box body, it is necessary first to understand theworking environment andworking principle, in order to figure outwhat is important in body surface,which is an important dimension,which is a key such as the main content.
Keywords: Computer aided manufacturing; The nc machining; Automatic programming
目录
1绪论1
1.1课题来源及研究的目的和意义1
1.2相关的技术背景2
1.3国内外在该方向的研究现状及分析4
1.4主要研究内容6
2箱体加工工艺规程制定8
2.1零件的分析8
2.1.1零件的作用8
2.1.2零件的工艺分析8
2.2变速箱箱体加工的主要问题和工艺过程设计所应采取的相应措施9
2.2.1孔和平面的加工顺序9
2.2.2孔系加工方案选择10
2.3变速箱箱体加工定位基准的选择10
2.3.1粗基准的选择10
2.3.2精基准的选择10
2.4变速箱箱体加工主要工序安排11
2.5机械加工余量、工序尺寸及毛坯尺寸的确定13
3 UG环境下的箱体CAM编程19
3.1 UG CAM数控编程方法19
3.2利用UG进行箱体CAM编程22
4箱体加工工艺参数的分析及选择确定28
4.1工艺参数分析28
4.2箱体平面加工参数33
4.2.1平面铣子类型的分析33
4.2.2平面铣加工参数的分析36
4.2.3箱体平面加工参数的确定38
4.3箱体孔系加工参数39
4.3.1钻孔加工子类型的分析39
4.3.2孔系加工参数的分析40
4.3.3箱体孔系加工参数的确定42
5结论43
致谢45
参考文献46
汽车变速器下箱体零件图
目录
设计所包含文件
数控编程部分
摘要
字数
加工综合卡片
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