集合逆向工程与数控加工的分析制造

Analysis and Manufacture Example for Combination of Reverse Engineering and Numerical Control

实现逆向工程的关键在于对曲面部件建立点云数据并进行适当的数据处理,使曲面模型满足加工制造要求。采用三维扫描仪完成曲面零件的扫描工作得到呈高度密集的点云数据,在Geomagic Studio环境下对密集点云进行数据处理,输出封装文件,并在Geomagic Design X中实现封装文件的建模,导入Geomagic Qualify进行误差检测同时生成分析报告。进入SIEMENS NX加工模块实现逆向模型的工艺编程,后处理操作输出数控加工程序。在SIEMENS NX和CIMCO Edit环境下模拟数控加工过程,验证数控程序的工艺可靠性。实验证实,将Geomagic、SIEMENS NX和CIMCO Edit结合起来的方法可以实现复杂曲面零件的逆向制造,提高逆向加工工艺的可靠性。

Establishing the point cloud data and proper data processing are the key of implementation of curved surface parts of reverse engineering, through which the surface model can meet the requirements of processing and manufacturing. The point cloud data with high density could be obtained by scanning work for a curved surface model by 3D scanners. The point cloud data with high density is processed and the package files is output in Geomagic Studio environment. The modeling work for package files is completed in Geomagic Design X environment. The error is detected and the analysis re- port is generated under the Geomagic Qualify environment. NC programming for reverse model is completed in the SIEMENS NX machining module, and NC machining program with the post-processing operation is output. In SIEMENS NX and CIM- CO Edit environment, NC machining process is simulated to validate process reliability of NC program. The instance proved that Geomagie, SIEMENS NX and CIMCO Edit can realize inverse manufacturing complex curved surface parts, and improve the reliability of the reverse process.