基于并行工程的叶片可制造性分析

【作者】 刘红军；

【导师】 莫蓉；

【作者基本信息】 西北工业大学 ， 航空宇航制造工程， 2004， 硕士

【摘要】 提高产品质量、降低生产成本、缩短开发时间是制造业在全球激烈竞争的市场上取得成功和发展的关键因素和永恒的追求目标，并行工程作为一种有效的解决方案正在逐步发展起来。在并行工程环境下，面向制造的设计DFM是一项重要的使能技术，它通过在产品设计阶段充分考虑与制造有关的约束，全面评价产品设计和工艺设计，并提出改进的反馈信息，从而保证产品设计、工艺设计和制造一次成功，并尽可能降低制造成本；而可制造性评价正是实现DFM的重要技术手段。 在对国内外可制造性评价技术研究的基础上，本文的工作主要从四个方面展开；第一，对可制造性评价的信息需求进行建模。以特征技术为基础，面向对象的编程机制为手段，建立了面向制造的三层次(即零件层、特征层、几何层)零件模型，同时进行了面向制造的资源建模；第二，采用分层逐步细化的评价策略，建立可制造性评价指标；第三，以评价指标为基础，采用基于约束规则和模糊综合评判的加工可行性评价方法；第四，以UG为开发平台，VC6.0为编程工具，航空发动机叶片为应用对象，初步构建了面向制造的叶片类零件的可制造性评价系统。更多还原

【Abstract】 It is an eternal objective pursued by manufacturing enterprises to improve the quality of product, reduce the lead-time and decrease the cost of product, and also is the key factor of enterprise achieving the success and the development in global market. To achieve the objective, the Concurrent Engineering (CE) is being applied in many enterprises. The Design For Manufacture(DFM) is an important design technology in Concurrent Engineering, which assures product design, process design and manufacturing to succeed at one time by taking the factors associated with manufacturing into consideration in the design phase; so the manufacturability evaluation is an important technical tool to implement DFM.Based on the research about manufacturability evaluation by many researchers in home and aboard, four aspects are discussed in this thesis. At first, the model about information requirement in manufacturability evaluation is set up. Based on the feature technology and object-oriented mechanism, the manufacture-oriented part model with three levels (namely part, feature and geometry) and the resource model is build; Secondly, the evaluation guidelines on the basis of evaluation strategy of fining with levels is constituted; Thirdly, an evaluation method according the evaluation guidelines is put forward, which is the rule-based and fuzzy evaluation-based method associated with resources. Fourthly, a manufacturing-oriented evaluation system for machining blade part is built更多还原