Application Research of Product Design Based on Hierarchical Cell and the Arithmetic for Producing Bill of Material

Aimed at the deficiency of existing computer-aided design tools, the text attempts to build a kind of assembly model based on hierarchical cell which lies between conceptual design and detail design. The model not only expresses the functional requirement fully but also is related to product data and geometrical information while describing the essential product structure ,which make the result of conceptual design become the input of later design. The text discuss the arithmetic for producing bill of material in later design ,and a software system aimed at elevator product was opened up based on these methods.