基于逆向工程的电动玩具直升飞机的设计毕业论文【必威体育精装版】.doc

摘 要 中国是一个玩具大国，但不是一个玩具强国 Abstract Toy industry of China is one of the nations of the largest products of toy. The industry is not the first-rate in the world. The development of toy industry of China is limited by many factors, such as design without innovation, lower quality standard, manufacturing no strict technology and with primitive methods. The reverse engineering (RE) is one of the most effective design methods, which has shorted the cycle of the product design with promoting the quality of products. The method has widely used many industries on aboard. Sheet metal design of automobile has applied the method in China. But the toy industry of China has hardly used the advanced method. Toy design with RE can cost less time and promote the quality of toys. This paper re-designed a toy airplane used a motor with REM under CATIA software, which is one of the most advanced soft of CAD/CAE/CAM. The design has these steps- reversing the model, constructing points cloud, modeling the CAD model, modifying some outer forming and inner construct. The airplane has more beautiful on appearance and more reasonable construct. This paper also designed the mechanical system of the airplane. Key words: the reverse engineering, a toy with a motor, CATIA 目 录 第一章 绪 论 1 1.1引言 1 1.2中国玩具业发展的现状 1 1．3逆向工程及其应用 2 1.4 CATIA简介 3 1.5课题背景及内容 3 第二章 玩具飞机外壳及结构设计 5 2.1外壳在玩具中的地位 5 2.2玩具壳体设计原则[5] 5 2.3逆向工程的基本流程 6 2.4 玩具结构设计 9 2.4.1玩具结构设计的基本要求 10 2.4.2 外形零件的配合结构 11 2.5螺旋桨的设计 12 第三章 机械传动系统设计 14 3.1玩具动力源的选择 14 3.2 玩具飞机机芯设计 14 3.2.1机芯的定义及作用 14 3.2.2 玩具机芯设计的基本要求 14 3.2.3机械传动系统 15 3.2.4 传动齿轮设计 17 3.2.5 控制凸轮设计 18 3.2.6 传动轴支承设计 18 3.2.7 轮子的设计 19 第四章 玩具飞机其他结构设计 21 4.1底盘设计 21 4.2电池箱设计 21 4.3电极片设计 22 4.4电池箱盖设计 22 4.5踏板设计 22 第五章 实体数模的装配 24 5.1电池箱、底盘和机械传动系统装配 24 5.2整机装配 24 总 结 26 致 谢 27 参考文献 28 绪 论 1.1引言 公元前100年，欧洲的科学家希罗曾利用水力驱动原理制造出会唱歌的鸟和活动铁匠铺等玩具。18世纪，欧洲出现发条玩具。19世纪，英国、德国能制造十分精巧的机动玩具如可装置梳妆用品的八音盒、与钟表连在一体的游乐宫等。19世纪末，德国能制造电动玩具，品种有电扇、火车头。20世纪20年代，德国生产出能发出汽笛声的电动火车头。不久意大利制成会冒烟的火车头。50年代以来，材料学、电工学、电子技术和加