| 摘要 |
A system is provided which operates for performing tolerance analyses for mating parts, and generation of tolerance call-outs for fixed and floating fastener features on parts. Following choice of the fasteners, the user designates the positions on a part where the selected fasteners are to be used by moving a cursor over a displayed representation of the part. Hole sizes and positions are computed for the fasteners and mating parts. Upper and lower optimum hole sizes are computed to ensure that bearing surfaces of a bolt head contact the surfaces of a part through which it extends. The system investigates assembly of the parts if the worst case tolerances for part assembly exist at each part. Tool characteristics and material thickness are taken into account in the tolerances analyses. <IMAGE> |
