飞机零部件基准选择与应用

Choice and Application on Datum of Aircraft Components

随着飞机性能的不断提高,飞机制造协调准确度的要求也越来越严格,国外先进的航空制造企业得益于厂所合一的生产方式,在产品设计阶段考虑生产过程,来合理定义飞机零部件尺寸公差要求,保证飞机的装配品质和产品质量。对飞机零部件基准选择方法介绍和研究,并应用到某机型飞机外翼翼盒典型零部件基准选择中去,从功能要求出发制定基准,说明了飞机零部件基准传递偏差方式和基准一致性原则。主要思想和技术要点是要从产品的功能要求出发,考虑生产过程来制定零部件设计基准,保证产品在生产过程中基准的统一,从而保证尺寸的设计满足生产的功能性要求。提出的方法可以应用到飞机零部件的尺寸设计中,通过合理的制定基准来提高飞机的装配品质,在一定程度上降低生产成本和提高生产效率。

The assernbly coordination accuracy of aircraft manufacturing becomes more and more strict with tile development of the aircraft structure and process. So defining fairly aircraft components dimension to achieve process opti- mum through tolerance analysis is an inevitable trend. This thesis introduces and researches the basic theory, with applying selection of certain aircraft components datum. Defining datum is decided by function request, indicating transfer deviation by datnm and datum consistency principia of aircraft components. The datum selection method can be applied to dimension design. Assembly quality is improved by defining fairly aircraft components datum, with reducing production cost and in- creasing productivity in some case.