轨道车车轮加工工艺及其知识库的研究

研究了现有轨道车车轮加工工艺,采用关系模型的数据组织方式,建立了基于SQL server 2005的加工工艺知识库。编写了相应的应用程序,初步建立了一个数据规范性好、使用方便的轨道车车轮加工工艺知识库系统。

基于UG/Open API实现加工能耗快速评估

为实现在三维设计软件中对产品加工能耗进行快速评估,文章在构建设计特征-加工特征-加工方法基础数据库的基础上,提出航天零件产品粗加工和精加工机床能耗模型,建立从设计特征到加工能耗的映射。并提出在UG CAD模块中通过基于UG/Open API,通过标记特征面、定义特征类型、输入特征精度等级实现零件的加工过程能耗快速评估预测。采用C++语言编写.dll动态数据库,在UG CAD模块中通过调用动态数据库的方式,实现能耗快速评估功能。并以某航天产品为例验证了方案的可行性。

Framework of Digital Machining Process Planning Platform for Cylinder Body Part

Digital factory technology is an advanced manufacturing technology served as to establish a bridge between the process of product development and manufacturing.In terms of application for digital factory technology in machining,especially in machining of a complicated part such as a cylinder body part,a concept of digital process planning and its framework are proposed.Its components including machining domain knowledge model,machining knowledge base,machining resource base and process planning system are studied.A machining knowledge model in tree form and an object-driven knowledge reasoning mechanism are used for machining knowledge base.The process planning system is a user interface that leads a planner to finish the planning process.A case about a cylinder head part is given to demonstrate how the platform works.The framework of digital process planning is the foundation of some intelligent CAPP systems and helps to production line planning.

数字化制造技术在航空液压壳体类零件加工中的应用

通过航空液压控制壳体零件的典型结构特征,基于CATIA/CAM平台,创建了刀具库、刀柄库,以及壳体孔系特征编程模块,将实物资源数字化、有序化,实现资源的共享及零件的快速编程,提升壳体的编程效率。通过创建机床仿真模型,定义全要素仿真要素,实现壳体零件加工的全要素虚拟仿真验证,并通过定制仿真后输出的加工报表,为生产准备提供了BOM清单。逐步将航空液压壳体类零件的加工向“无纸化”加工推进。