at the same time, in order to decrease the break and hollow occurred in machining process, a new method named machining tool-path interactive modification and optimization based on nurbs have been provided for the complicated surface panel and fast-response in machining process of the sheet metal incremental forming achieved 本文介绍了金属板材数控渐进成形技术的过程、原理,同时,主要针对加工过程中发生的破裂、凹陷等缺陷,提出了一种基于nurbs的加工轨迹人机交互修改和优化的方法,解决了复杂曲面零件无法加工的难题,实现了金属板材数控渐进成形加工过程的快速响应。