1、 本科生毕业设计（论文） I 摘 要 本毕业设计题目是阀堵工艺工装设计及 CAD/CAM，来自岫岩机械有限 公司。公司专门从事国外机加工生产，主要的加工对象是阀体类零件，在精 密铸造方面也有着他们自己的先进技术。 分析零件特点拟订合理的工艺规程，依据工艺规程设计，选择机床和设计合 理的夹具。 设计内容：利用 Pro/engineer 的零件模块建造实体模型；利用 CAXA 电子图 版绘制零件的工艺规程表和夹具设计图；利用 MasterCAM 模拟上表面各槽的加 工路线和生成数控代码，利用 CIMCO Edit 对生成的数控代码进行仿真。 设计难点：在零件的工艺规程设计中，零件下表面粗糙度要求较
2、高，通过精 磨可以达到要求。零件中心孔的粗糙度要求也较高，通过磨销即可达到要求。零 件上表面 0.38 深圆槽较难加工，在加工中心用38.0的专用铣刀完成。零件下表 面 4.83 宽圆槽也比较难加工，利用加工中心完成。 关键词：模具；夹具；模拟制造；实体造型 本科生毕业设计（论文） II Abstract The subject of this design is designing the assembly and craft of valve base. It also relate to CAD/CAM. This subject task comes from Xiuyan Machi
3、nery CO.LTD which works in machining production for abroad. Its main machining objects are parts like types of valve base. It has advanced technology in investment casting. The feature of the parts is analyzed so as to plan the reasonable process and select the corresponding machine and inspection.
4、Content of design: The parts module of the Pro/engineer is used to build the work piece. CAXA electric plate is used to draw the accessorys stipulation chart of technic and design of jig. MasterCAM is used to simulate the processing route of every trough of above surface and turn into the numerical control code. CIMCO Edit is used to carry on simulation to the numerical control code produced. Difficulties in design: In the simulation design of technic, low roughness is requested for the
