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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers >Tolerance optimization by modification of Taguchi's robust design approach and considering performance levels: Application to the design of a cold-expanded bushing
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Tolerance optimization by modification of Taguchi's robust design approach and considering performance levels: Application to the design of a cold-expanded bushing

机译：通过改进田口健壮的设计方法并考虑性能水平来优化公差：在冷胀套管设计中的应用

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摘要

This paper defines a method for the optimization of design parameter tolerances. The general architecture of the proposed method is identical to that of the robust design reference method proposed by Taguchi but its content is different as the tolerances are considered as functions to be maximized here, while Taguchi's method rather considers these tolerances as fixed data. Instead of looking for design parameters that minimize the sensitivity of some performance criteria, the design parameters are calculated so as to obtain maximal tolerance intervals, thus minimizing manufacturing costs. Performance criteria are then considered in terms of optimization constraints: each criterion gives rise to an inequality constraint that specifies the minimum level of performance that the designer wants to achieve. The possibilities offered by this method are illustrated through its use in the preliminary design of a cold-expanded bushing. In this case, tolerance optimization enables the allowable tolerances on the design diameters to be increased and performance levels are defined on the residual radial stress at the bushing/part contact radius and on the residual orthoradial (hoop) stress at the part inner radius.
机译：本文定义了一种优化设计参数公差的方法。提出的方法的总体架构与Taguchi提出的鲁棒性设计参考方法相同，但是其内容有所不同，因为公差在此处被视为要最大化的函数，而Taguchi的方法则将这些公差视为固定数据。代替寻找使某些性能标准的灵敏度最小的设计参数，计算设计参数以获得最大公差间隔，从而使制造成本最小。然后根据优化约束来考虑性能标准：每个标准都会产生一个不平等约束，该不平等约束指定了设计人员想要达到的最低性能水平。通过在冷膨胀衬套的初步设计中使用该方法，可以说明这种方法提供的可能性。在这种情况下，公差优化可以提高设计直径上的允许公差，并且性能水平取决于衬套/零件接触半径处的残余径向应力以及零件内半径处的残余正向（箍）应力。

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