Model for a CAD-assisted designing process with focus on the definition of the surface texture specifications and quality

In the early stage of engineering design, the optimal control of engineering surface is of essential importance to control the quality of products and to reduce the cost. A model for a CAD-assisted designing process with focus on the definition of the surface texture specifications and quality is presented for the purpose of assisting designers assign an optimal surface texture specification to fulfil the requirements of function, lower costs and shorter product lifecycles. The model is the basic philosophy to develop a surface texture intelligent information system which can be integrated with CAD systems.