The development of complex products with high quality in dynamic markets requires appropriate robust design and tolerancing workflows supporting the entire product process. Despite large number methods tools available for designers tolerance engineers, there are hardly any consistent approaches that applicable throughout all stages. This is mainly due to break between primarily qualitative conc...

A computer aided tolerancing tool is presented that assists the designer in functional tolerance specification. The theoretical concepts for subsequent tolerance analysis are also provided. The computer aided tolerancing tool is part of a feature based object oriented (re)–design support system, called FROOM. FROOM’s assembly modelling capabilities provide basic information for functional toler...

the map and the model designed by a designer and presented to a manufacturer in the form of a map is the result of his knowledge and innovation. the manufacturer, in turn, uses his best effort to produce a part accordingly. however, because of production problems and raw material, producing a precise part is very difficult and costly. one of the most important problems in this regard is designi...

When dealing with precision in tolerancing of assembly systems, the modelling complexity of the mechanism increases. At first, one can distinguish the 1D tolerancing approach that only concerns variations of dimension. Then, several models are defined to set 3D tolerances, considering that the form error is negligible compared to the orientational and translational variations. Finally, some app...

nia, San Diego. The tool has been extensively used to design and simulate free space opto-electronic interconnect systems.[1] Chatoyant is capable of performing end-to-end system simulations, with analyses including bit error rate (BER), insertion loss, cross talk, and mechanical tolerancing. Chatoyant’s optical library includes sources (VCSELs and MQW modulators), optical components (lenses, l...

The tolerancing process links the virtual and the real worlds. From the former, tolerances define a variational geometrical language (geometric parameters). From the latter, there are values limiting those parameters. The beginning of a tolerancing process is in this duality. As high precisions assemblies cannot be analyzed with the assumption that form errors are negligible, we propose to appl...