设计描述：

文档包括:
word版设计说明书一份，48页，约13000字
CAD版本图纸，共5张

    目  录
 摘要………………………………………………………………………………………………     3
 ABSTRACT…………………………………………………………………………………       4
 第一章  概论………………………………………………………………………………      
1.1引言………………………………………………………………………………………
1.2数控加工的特点……………………………………………………………………
1.3国内外研究状况……………………………………………………………………
1.4数控加工发展现状…………………………………………………………………
1.5结论………………………………………………………………………………………
 第二章  零件分析及设计任务书                           5
2.1铝合金薄壁异形件分析……………………………………………     5
2.2零件的结构特点……………………………………………………     5
2.3零件的技术要求……………………………………………………     5 
2.4零件加工要求………………………………………………………     5
2.5 数控加工的特点……………………………………………………    7
  第三章  工艺规程的制定                                8
3.1 生产类型及工艺特征………………………………………………    8
3.2 零件材料及毛坯……………………………………………………    8
 3.3 定位基准的选择……………………………………………………    8
3.4 工艺路线的拟定……………………………………………………    9
3.41毛坯制造……………………………………………………………    9
3.42.强化处理……………………………………………………………  10
3.5数控加工………………………………………………………………  10
3.6钳工……………………………………………………………………  10
3.7表面处理………………………………………………………………  11
  第四章  切削用量的选择                               11
4.1主轴转速………………………………………………………………  11
4.2背吃刀量………………………………………………………………  11
4.3进给速度………………………………………………………………  11
4.4铣削功率校验…………………………………………………………  12
  第五章  专用夹具设计                                 13
5.1被加工零件工序图……………………………………………………… 13
5.2专用夹具设计…………………………………………………………… 16
  第六章   数控加工程序编制                            17

6.1  数控加工程序………………………………………………    17

全文总结…………………………………………………………     28
致谢………………………………………………………………     29
参考文献…………………………………………………………    30

   摘   要

铝合金薄壁异形件主要应用在航空航天等机载设备中,因此要求壁厚薄以达到减轻重量的目的,同时需要保证一定的强度与刚度。通过它将若干只微波器件按一定的相互位置关系装配在一起，按电信设计要求实现微波信号的发射与接收。因此该类零件的加工精度要求更高。铝合金薄壁异形件的种类很多，其尺寸、大小和结构形式随其用途的不同也有很大的差异。一般来说铝合金薄壁异形件的主要结构特点是：有加工精度要求高的安装孔；结构复杂、形状怪异、没有明显基准面；壁厚薄而且不均匀；铝合金材料与一般钢件相比，切削后容易产生切削应力，导致变形等。
该零件的加工精度要求较高，加工面主要是孔和平面，位置、形状、尺寸精度都各有要求。工艺设计时要考虑到节约成本，提高生产率，减轻工人劳动强度，因此采用数控加工并设计了专用工装，能有效地保证尺寸加工精度。零件表面层的物理力学性能，对零件的使用性能与使用寿命有很大影响，提高和改善零件表面层的物理力学性能，因此，零件最终工序加工方法的选择，应考虑该零件的具体工作条件及可能产生的破坏形式。受交变应力作用的零件，从提高零件疲劳强度出发，应选择使零件产生残余压应力避免产生残余拉应力的最终加工方法。

关键词：薄壁  异形  机载设备  专用工装  疲劳强度  残余拉应力
 
ABSTRACT

The aluminum metal alloy thin wall abnormal shape piece main application at aviation aerospace etc. the machine carries an equipments in, therefore request the wall the purpose that the degree of thickness eases by attaining weight, need to promise certain strength in the meantime with just degree. Pass it press some microwave spare parts certain mutual position to relate to assemble together and press the telecommunication design to request to carry out the blast-off of microwave signal and receives. Therefore that type of spare parts processes accuracy to have higher request. The category of the aluminum metal alloy thin wall abnormal shape piece is a lot of, its size, size and structure form therewith the dissimilarity of use also has very great difference. Generally speaking the main structure characteristics of the aluminum metal alloy thin wall abnormal shape piece Behaves the gearing bore to process accuracy request Goatee structure is complicated, weird shape and have no obvious base level; Wall degree of thickness and asymmetry; The aluminum metal alloy material easily produces to slice to pare in response to the dint after slicing to pare compared with the general steel piece, cause to transform etc..
That spare parts processes accuracy to have higher request and process noodles mainly is peaceful bore side, position, shape and size the accuracy Be all each to have a request. Technological design want in consideration of economize cost, raise rate of production, ease worker labor strength, therefore adopt a number to control to process and design the appropriation work packs, can availably promise that the size processes accuracy. The physical mechanics function of spare parts surface layer to usage function and service life of spare parts influences very greatly, the physical mechanics function of exaltation and the improvement spare parts surface layer, therefore, the spare parts end work preface processes the choice of method, should consider the concrete work condition and possible output breakage form of that spare parts. BE handed over to change in response to the spare parts of dint function from raising spare parts tired strength to set out, should choose to make the spare parts produced remnants remaining to press to avoid creation remnants in response to the dint remaining pulls in response to the finally processing of the dint method.
key words: Thin wall  Abnormal shape  The machine carries an equipments 
The appropriation work packs  Tired strength  Cripple remaining pulls in response to the dint