就智能设计系统的再设计问题进行了详细的分析与研究，在综合领域成就的基础上，探讨了再设计面临的主要困难．针对重型机床模块化设计的特殊性及机床结构约束的松散性，提出了一种基于实例的再设计策略辅以相关性制导等策略的混合控制策略；并详细描述了基于实例的再设计策略的基本思想、实现方法、关键技术与求解机制．该策略已成功地、柔性地应用于重型机床模块化设计全过程． The redesign of the intelligent design system was analyzed and studied in detail. Based on the achievements in the field of integrated design, the main difficulties in redesign were discussed. In view of the particularity of heavy machine tool modular design and the looseness of machine structure constraints, a hybrid control strategy based on instance redesign strategy with correlation guidance strategy is proposed. The example based redesign strategy Basic idea, method of realization, key technique and solution mechanism The strategy has been successfully and flexibly applied to the whole process of heavy machine tool design.