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Geometrical position tolerance assignment in reverse engineering

机译:逆向工程中的几何位置公差分配

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Geometric dimensioning and tolerancing constitutes the dominant approach for design and manufacture of mechanical parts that control inevitable dimensional and geometric deviations within appropriate limits. Position tolerance is a critical geometric tolerance very frequently used in industry. Its designation requires size data in conjunction with appropriate datums and location coordinates for the position. In reverse engineering, where typically relevant engineering information does not exist, conventional, human-based, trial and error approach for the allocation of positional tolerances requires much effort and time and offers no guarantee for the generation of the best results. This is mainly due to the large number of possible data combinations and the applicable relationships that have to be developed and processed. A methodology that aims towards the systematic solution of this problem in reasonable computing time and provides realistic and industry approved results is presented, demonstrated and discussed in the paper.
机译:几何尺寸和公差是设计和制造机械零件的主要方法,这些零件将不可避免的尺寸和几何偏差控制在适当的范围内。位置公差是工业上非常常用的关键几何公差。其指定需要尺寸数据以及相应的位置基准和位置坐标。在逆向工程中,通常不存在相关的工程信息,因此传统的,基于人的,反复试验的位置公差分配方法需要大量的精力和时间,并且无法保证产生最佳结果。这主要是由于大量可能的数据组合以及必须开发和处理的适用关系。本文提出,演示和讨论了一种方法,该方法旨在在合理的计算时间内系统解决该问题,并提供现实的结果和行业认可的结果。

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