Research Initiation: Automatic Design of Machining Fixturesfor Automatic Process Planning

研究启动：用于自动工艺规划的加工夹具自动设计

• 批准号: 8909514
• 负责人: Yon-Chun Chou
• 金额: $ 6.32万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-01 至 1992-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8909514&HistoricalAwards=false
• 关键词: Research; Initiation; Automatic; Design; Machining

Because fixtures are special tools in the sense that each is generally used for making one type of parts, the time and cost of fixturing for small-batch production are excessive on a per-part basis. A critical need is shown to exist for automating the design of machining fixtures in the context of automatic process planning for small-batch production. This project is directed towards the development of an integrated methodology for the following fixturing decisions: conceptual design, the number of fixtures needed, workpiece orientation in each fixture, fixturing points and clamping forces. The methodology will be based upon engineering mechanics and sound principles used in fixturing practice. The former is used to ensure proper design and the latter is used as high level guidance for fixture synthesis. In addition, the reasoning of part geometry is addressed, which provides a basis for the integration of process planning and fixture design. A prototype system will be developed using knowledge system tools.

因为夹具是特殊的工具，每一个通常用于制造一种类型的零件，小批量生产的夹具的时间和成本在每个零件的基础上是过多的。在小批量生产自动化工艺规划的背景下，迫切需要实现加工夹具的自动化设计。该项目旨在为以下夹具决策开发一种综合方法：概念设计，所需夹具数量，每个夹具中的工件方向，夹具点和夹紧力。该方法将基于工程力学和在夹具实践中使用的合理原则。前者用于保证正确的设计，后者用于夹具综合的高级指导。此外，还对零件的几何形状进行了推理，为工艺规划与夹具设计的一体化提供了依据。将使用知识系统工具开发一个原型系统。