中文摘要：

利用数控加工程序的可重用性，从提高数控编程的质量和效率出发，提出了一种基于刀具特征的动态分解策略。根据企业的产品特点和可用的制造资源，按加工设备对特征进行分类和管理，建立了加工特征库，实现了基于特征的参数化、模块化数控程序生成。与现有的特征建模方法不同，该特征模型不但包括特征几何形状信息，而且定义了刀具选择、路径优化和参数驱动的数控程序生成模块。采用这种方法进行数控工艺设计，可大大缩短数控程序设计时间，提高数控代码的继承性和可重用性。

英文摘要：

To improve quality and efficiency of Numerical Control（NC） programming by reusability of NC programming, a dynamic decomposition strategy based on cutting tool machining feature was proposed. According to product characteristics and available manufacturing resource, feature was classified and managed by machining equip ment. Machining feature base was constructed to realize parametric and modular feature based NC programming generation. Different to existing feature modeling methods, this feature model included not only geometric informa tion of the features, it also defined NC program generation modules such as cutting-tool selection, path optimization and parameter-driven. The proposed method greatly improved NC programming time, inheritance and reusability of NC codes.