飞机装配型架标准接头定位器自动选取算法

Automatic Selection for Standard Joint Locator in Aircraft Assembly Fixtures

在现代飞机结构中 ,整体结构件的应用导致了飞机装配型架结构中大量使用接头和工艺孔定位器 .这些定位器一般由工作头和标准接头定位器两部分构成 .为了缩短型架研制周期 ,在型架设计中开始推广应用CAD技术 ,包括开发型架专用设计系统 .因此 ,研究接头定位器的自动设计 ,对进一步简化型架设计过程、提高设计效率具有重要的意义 .标准接头定位器的自动选取是实现接头定位器自动设计的技术关键 ,就此提出了标准接头定位器自动选取的专门算法 ,其中包括提出并建立可定位域概念及其数据表示格式 .该算法已应用于自行研制的飞机装配型架CAD系统中相关模块的开发 。

Single structural parts are widely used in the structure of modern aircraft, and this leads to mostly adopt components in aircraft assembly fixtures to locate product joints and process holes. Each of these components usually consists of a working part and a standard joint locator. In order to decrease the time, fixtures begin to be designed with CAD techniques, including the development and application of fixture-specialized design system. So automating the design of locators is very important to further increase the fixture design efficiency. Selecting and creating a standard joint locator is most costly during the design of a locator with a CAD system. Some new concepts, such as possible locating area, are defined firstly. Based on these concepts, an algorithm to autonomously select and create a standard joint locator is proposed. This algorithm has already been applied to develop the module 'automatic design of joint locators' in the FixCAD system.