Process Planning: Routing
The purpose of process planning is to set a routing that will transform raw material into the form specified and defined by the engineering drawing. It is generally based on human skill and intuition. A routing, once set, may be revised only by a process planner. This robs the manufacturing system of its natural flexibility. The point of view of this book is that routing is a mathematical problem in combinatorics that does not require the expertise of a process planner. Therefore the task of the process planner is not to set routing but rather to generate a roadmap of possible processes, and let each discipline generate routing according to the immediate on-line manufacturing state. Such an approach makes manufacturing simple and efficient.