基于VC开发NC车削自动编程图素工艺信息输入模块

摘要

在NC车削自动编程系统中,为高效输入图形零件数据信息,优化CAPP数据结构,获得高效率自动化数控编程,确定了基于轴类件的数据结构(包含几何信息和工艺信息).采用求交算法捕捉图形轮廓的关键点位信息,实现各图素的特征提取和输入,用户可在屏幕上点选特征图素,输入对应的工艺信息,随后通过动态绑定技术在数据库里存储和处理数据信息.不同的特征图素将产生不同类型的表,可通过打开数据库的方式输入并重现零件图形,最终输出NC车削系统所需的数据结构,提高零件图形输入效率,为虚拟NC车削加工仿真提供技术支撑.%In NC lathe cutting automatic programming system, in order to express and input part information effectively, to opti-mize CAPP data structure and to realize NC programming automation, the data structure of axial parts ( including geometric information and processing information) was set up. Taking intersection algorithm to capture the key point information of graphic contour, the pixel feature extraction and input were realized when clients pick up the pixel needed, then data processing and storing were realized with the dynamic link library technology. Because different graphic pixel generated different types of lists, the graphic could be input and reap-peared on the screen by opening database, then the data structure required by NC lathe cutting system could be output. The efficiency of the graphic input has been highly improved, it provides technology support for the NC lathe cutting visualization.