Research and application for modeling method of product design based on three-dimensional scanning cechnology

The efficiency and quality of product design (PD) is essentially about designer as well as in a rapidly changing and keenly competitive environment. The work presented in this paper focuses on presenting a new kind of modeling method of product design, which introduced three-dimensional scanning technology into the course of PD. The method used in our study is known as direction by model. When we had an original draft, we manufactured products model first in the phase of concept design using some common materials such as wood, ABS, gypsum, greasy soil and so on. Than we measured the model with the three-dimensional scanner obtaining the point clouds of the model. Finally, we could construct the substantiated model through the point clouds. In comparison to the traditional computer aided design process, this method can firstly develop the originality of designer in a more extensive range. Secondly, we can acquire the feedback of feeling sense and touching sense of the product in an earlier phase, so we can save times and cost for bridge over the repeatedly modifying in the stage of prototype. In order to prove our view we carried out several studies which have demonstrated that this method can improve the efficiency of design process by 43% and decrease the times of amending in later period of the design by about 450%. And it cuts down the annulment rate too. Finally, the design of a curer instrument for amblyopia is employed to demonstrate the above viewpoints.