To enhance the efficiency and stability of die-face design, a parametric optimization method based on the template of section feature was proposed. The 2-D section feature was generally represented in NURBS form while its characteristics were systematically analyzed. Then, an optimization algorithm was designed with a simple and effective editing strategy. With the algorithm integrated into the independently developed DCiP forming analysis system, a comparison with HyperForm Die Module was made. The results showed that the proposed method could avoid abnormal problems, and had great ability to simplify user operations and shorten product design periods.%为提高模面型面设计的效率与稳定性,提出了一种基于截面线模板的参数化优化方法.首先对2-D截面线的特征和类型进行分析,给出截面线统一的NURBS显式表达式；然后针对截面线的结构特点,提出一种简捷、高效的截面线编辑策略,并设计相应的优化算法.将算法集成到自主开发的冲压成形分析软件DCiP模面设计模块,并与HyperForm的Die Module进行比较,结果表明:算法避免了现有方法中飞逸、越界等异常的发生,简化了用户的操作,缩短了产品的设计周期.
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