| 1. | Developments and applications of aircraft jig parametric design system
飞机型架参数化设计系统的开发与应用 |
| 2. | The aircraft assembling jig is a kind of important equipment , and directly affect the period and quality of aircraft production
飞机装配型架是飞机制造的重要工艺装备，其设计制造周期和质量直接影响到飞机研制的周期和质量。 |
| 3. | Assembly fixture is a large scale tooling for orientation and clamping in aircraft ' s assembly , and directly affects the period and quality of aircraft production
型架是飞机装配过程中，对零件、组件进行定位夹紧的一类大型的夹具，其设计制造周期和质量直接影响到飞机研制的周期和质量。 |
| 4. | The fixture ' s rigidity and stability is an important criterion , design and production of this kind of fixture has always been a great problem in aircraft ' s development
型架的刚性和稳定性是保证飞机装配准确度和协调准确度的重要质量指标，其设计与制造一直是飞机产品研制过程中的瓶颈问题。 |
| 5. | In this thesis , how to use intelligent method in the jig cad system is investigated , the overall jig intelligent cad system and function configuration model are accomplished by case - based reasoning ( cbr ) method
本文结合科研项目，对型架cad系统中的智能化问题进行了详细地研究，采用基于实例的推理方法( cbr ) ，提出了型架智能化cad系统的体系结构和功能配置，完成了型架cad系统的总体设计。 |
| 6. | Experience formula is applicable for some small and low precision - requested assembly fixture , for some complicated and large scale ones , fem for space frame is requested . at the end , an example based on this system has been given
即对于结构简单、精度要求不高的部装型架，采用材料力学和结构力学理论公式进行刚度校核；对于总装等结构复杂，精度要求高的大型型架，采用空间刚架的有限元分析。 |
| 7. | According to cbr and jig ' s structure feature , mainly discuss how to represent jig structure , how to organize of case base , how to retrieve the similarity case . at last , a jig design algorithm model based cbr is put forward
通过对cbr技术的研究，结合型架的结构特征，重点研究了型架结构实例的表达方法，型架结构实例库的组织方法，型架结构实例的检索方法，建立了基于cbr技术的型架设计算法模型。 |
| 8. | Abstract : problems existed in using combined jig to assemble airplane are analyzed and the principle of how to select integral structure configuration of jig for airplane assembly is introduced . correct setting of three supporting points of the integral jig is discussed in the paper as well
文摘:分析归纳了飞机装配中采用组合式型架存在的问题；介绍了飞机装配中型架总体结构形式的选择原则；讨论了整体式型架3个支承点应如何正确设置。 |
| 9. | Each control rod assembly consists of a number of absorber rods attached to a spider assembly and coupled to the control rod drive mechanism . the absorber rods are made up of neutron absorbers such as silver , indium and cadmium . hence , by adjusting the position of the control rods , the number of neutrons and thus the fission rate in the reactor can be controlled
及控制反应堆的核裂变，部份燃料组件装配有控制棒，控制棒组件由星型架及多根含银( ag ) 、铟( in )和镉( cd )的中子吸收体棒所组成，因此移动控制棒的上下位置就可以控制反应堆内中子的数目与及核裂变。 |
| 10. | According to the fixture ' s cad process and the structure ' s characters , modularization and standardization design methods are researched on this fixture , system function model and information model are built and general structure is made up . parametric part library , frame section library based on feature is realized
在型架快速设计方面，通过对装配型架结构类型及特点的归纳以及型架cad流程的分析，研究了型架模块化和标准化设计技术，建立了型架快速设计支持系统的功能模型、信息模型和整体框架。 |
