摘要
由于工作量大以及CATIA软件的逆向设计功能有限,在新车研发时的竞争车型分析,以及其他的汽车零部件的逆向设计中,难以建立所需的参数化模型。针对这一问题,研究了"联合使用Geomagic Studio和CATIA V5软件,实现曲面拟合的自动化操作,从而在汽车零件逆向设计中快速建立高精度的参数化三维模型"的方法;以某轻型发动机气缸盖罩的逆向三维设计过程为例,描述了使用EXAScan对零件进行激光扫描,在Geomagic Studio中对点云进行前处理和曲面拟合,然后导入CATIA V5完成结构设计和曲面加工的完整过程;最后,为提高精度,根据实际经验提出了若干建议。研究结果表明,该方法非常适合汽车零部件的参数化逆向设计,并能为新产品开发提供极大的便利。
Because of the enormous work in reverse engineering of automotive parts and components and the limitation of CATIA V5, it is hard to establish parametric models. Aiming at this problem, the combined use of Geomagic Studio and CATIA V5 to realize automated sur- face reconstruction was studied to rapidly achieve high-accuracy parametric models in reverse engineering of automotive parts and compo- nents. A case study of reverse design of a light engine cylinder head cover was described to reveal the general process of parametric design, which includes parts laser scanning with EXAScan Handed Laser Scan, pre-proeessing the cloud points and surface fitting in Geomagic Studi- o, and structural design and surface reconstruction in CATIA V5. The results indicate that this method applies well to the parametric model- ing in reverse engineering of automotive parts and components, and provides much convenience for the development of new products.
出处
《机电工程》
CAS
2013年第11期1345-1349,共5页
Journal of Mechanical & Electrical Engineering
基金
湖北省教育厅科学技术研究计划指导性资助项目(B2013082)
湖北汽车工业学院本科教学工程资助项目(SJ201204)
湖北汽车工业学院教育科研资助项目(201001y)
湖北省省教育厅2012年高等学校省级教学研究资助项目(2012319)
