基于DXF文件的数控车削编程系统零件信息输入技术研究  

Technology of part information input for NC turning programming system based on DXF files

作　　者：孙燕华[1,2] 张臣[2] 周来水[2] 

机构地区：[1]无锡职业技术学院,无锡214121 [2]南京航空航天大学江苏省精密与微细制造技术重点实验室,南京210016

出　　处：《机械设计与制造》2011年第6期211-213,共3页Machinery Design & Manufacture

基　　金：江苏省精密与微细制造技术重点实验室开放课题基金(Z061-052-09)

摘　　要：在数控车削编程系统的开发中,直接从CAD图形库中提取零件的几何信息和工艺信息,是获取车削零件信息的一种方式,对于数控车削自动编程系统的实现具有重要意义。结合企业实际需求,通过分析DXF的文件结构,提出了DXF文件解析方法,利用Visual C++6.0从DXF文件中提取直线、圆弧、样条曲线等车削零件的图元轮廓信息,并将所读取的各图元信息保存于设置好的链表结构中,为车削零件的刀具轨迹的生成做好准备。应用实例表明所提出的方法能正确获得车削零件信息,能满足数控车削编程系统对零件信息输入的要求。Extracting geometric and process information of parts directly from CAD graphics library is a way of obtaining information for turning parts and has great significance in the development and realization of NC turning automatic programming system.The analytical method of DXF files is proposed to extract contour information of turning parts such as line,arc,spline curve by analyzing DXF file structure according to the actual enterprise requirements.The extracting contour information is stored in the list structure using Visual C ＋ ＋6.0 and is ready for generating of tool path of turning parts.A practical example shows that the proposed method can get the right turning parts information which can satisfy the requirements for inputting turning parts information to the NC turning automatic programming system.

关 键 词：计算机辅助制造 DXF文件 数控车削 刀具轨迹 零件信息 

分 类 号：TH16[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]