Product development and process capability - case of quality tools application 2007-01-2945
All dimensional variation of assembly in structures is based on the geometry stack up between for profiles and localization of pins or holes in fixtures. The capability for a smaller dimensional variation is proportional to the number of stack up and the components geometry of the assemblies.
When a product objective is defined, the structure of parts of intermediate sub assemblies compose the basis for the study, therefore the construction and stack up of tolerances of each part or process can be better based on combinations that are defined by the tool of robust engineering.
As much bigger is the geometric dependence in the stack up, greater will be the variation probability.
One understands for geometric dependence is the detailed dimensional consequences for the geometry of contact between components.