包容理论在导弹构件外形偏差评定中的应用

in missile’s mechanical parts shape deviation assessing

摘要:

阐明了导弹的机械构件在设计和加工过程中有严格的精度要求,对于已经生产出来的构件,需要对其进行外形偏差评定；包容理论就是建立构件最小外包容模型,评定其外形偏差的方法。该方法不但可以鉴定构件外形是否合格,而且能够反映出加工工艺的误差。文中还应用包容理论对导弹的一例构件建立外形偏差的数学模型,并进行了计算分析,计算结果证明该例构件外形在偏差允许范围内。

Abstract:

The guided missile’s mechanical parts have the strict accuracy request in design and machining process. For these already produced out, it is necessary to assess the shape deviation of them. The theories of enveloping are to build up the minimum external enveloping model of the mechanical parts, assessing the deviation of its shape. The method not only can appraise whether a shape of the mechanical parts are qualified or not, but also can reflect the error margin that process the craft. In this paper, with the theories of enveloping, a mathematical model of the shape deviation assessing is established to an example of guided missile’s mechanical part, and the calculation analysis is carried on. The result proves that the shape of the parts are within the scope of the deviation allow.