关键词: 产品造型设计, 口语分析, 认知试验, 数控机床, 思维模型

Abstract: Product form design is a problem-solving process in ill-structured domain where designers’ knowledge and expertise are employed to finish product form problem-solving. The thinking process and model of product form design are the difficult problems in the area of design studies. Through a form design cognitive experiment based on the method of protocol analysis, a product form design thinking model is proposed. The model is that product form design thinking is a design information process in two ways：bottom-up processing and top-down processing. And based on the model, a product form design thinking model based ICAID system is established and put into practice to finish some design works.

Key words: Cognitive experiment, NC machine tools, Product form design, Protocol analysis, Thinking model