Firstly, analyzes the characteristics of the ball pen mould design, establishes the frame of ball pen mould design system and the flows of the ball pen mould conceptual design based on CBR.

• 接着对制笔模具方案设计事例的信息模型进行了研究，根据制笔模具方案设计的影响因素和目标要求，结合各种笔零件的特点，分别提取了笔零件和笔模具的相关特征信息。