ABSTRACT
We survey CAD geometry algorithms currently in use at the Boeing company. Geometry creation, NC tool path generation, and visualization are well represented. Other areas, for example path planning for assemblability or maintainability, are not so widely used. We illustrate the principle that each design or manufactur ing process, together with the algorithms that support it, is embedded in a network of upstream and downstream processes. Thus, each algorithm imposes constraints on, and is constrained by, many others. Finally, we discuss the difficulties of technology transfer. That is, how does one ensure that new mathematical techniques are actually used, and actually contribute to the prof itability of the company?
