Exploiting the process capability of profile tolerance according GD&T ASME-Y14.5M

GD&T language allows us to control part geometric variations from a designer´s point of view. The tolerances should also take into account the effect of available fabrication, assembly, and inspection processes. This study proposes new mathematical models for identification and calculation of the profile tolerance according to ASME Y14.5(.1)M-1994 considering the available process capability and the geometric complexity of a part. The models are based on the order statistic theorem. From these models, charts were constructed to ease the calculation of the tolerance by the designer. Finally, two case studies are presented to illustrate the usefulness of the developed models.