基于DXF文件的CAD/CAM刀具路径优化与生成

摘要

By analyzing DXF file data format and application features, an interface program was developed under Visual C ++ to obtain graphic information from CAD drawing and then to convert them into coordinates data.In the post processing module, based on the design method of sort-by-insertion, obtained data were processed by fitting using line segment to optimize the tool path.Combining CNC machining technology, the data were converted to CNC instruction codes accepted by machine tools in order to create a CNC program.The optimized tool path effectively reduces the times of knives in the ups and downs.It provides a feasible and effective measure for following development of the CAM software.%分析DXF文件数据格式和应用特点,通过利用Visual C++开发的接口程序从CAD图形中提取图形信息并将其转换为坐标点数据.在后置处理模块中,采用小线段拟合曲线的方法,对提取的数据点采用插入排序的设计思想,以此来优化刀具路径.并结合数控加工工艺知识将数据转换为机床能够识别的NC代码,生成数控加工程序.刀具路径的优化有效解决了加工过程中起落刀次数过于频繁的问题,为后续CAM软件的开发提供了一种有效可行的解决方案.