基于CAD的三坐标测量机检测规划系统的开发--专业文档--专业文档

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1、基于CAD的三坐标测量机检测规划系统的开发收稿日期：2008-12ReceivedDate：2008-12慕金项目：科技部科技型中小企业技术创新慕金(04C26223400148)资助项目赵韩刘达新打董玉德I,王万龙'(I合肥工业大学机械与汽车工程学院合肥230009；2合肥文斯特科技有限公司合肥230088)摘要：为了提窩检测自动化和帘能化水平，提出基于CAD平台的三坐标测量机检测规划系统的开发方法。系统结构山外至里分为界面层、功能层、服务层和数据层四层，外层的操作和功能通过里层的支撐服务和数据实现。关键技术

2、中检测儿何信息的提取分为胃接获取和元索离散点拟合两种方式；采样规划采用以规则分布为基础的步长自适应再分策略；路径规划主要涉及表面求交线的碰撞检査及基于启发式规则的碰撞规避:自动编程根据功能和规划信息依DM1S格式实现。整套系统基于三维CAD平台OpenCASCADE进行了实现，相关实例表明该系统能很好地完成常见零件的自动检测规划任务。关键词：三坐标测量机(CMM)；CAD/CMM集成；OpenCASCADE；检测规划；尺寸测量接口标准(DMIS)中图分类号：TP391.76文献标识码：A国家标准学科分类代码：52

3、0.60DevelopmentofCAD-basedinspectionplanningsystemforCMMZhaoHan,LiuDaxin,DongYude,WangWanlong。(LSchoolofMechanical&AutomotiveEngineering.HefeiUniversityofTechnology,Hefei230009,China;2.HefeiWinsterTechnologyLtd.,Hefei230088,China)Abstract：Inordertoimprovethel

4、evelofautomationandintelligenceforinspection,amethodofdevelopingCADplatform-basedinspectionplanningsystemforcoordinatemeasuringmachines(CMM)isproposed・Thesystemarchitectureisdividedintofourlayersfromoutsidetoinside:interfacelayer,functionlayer,servicelayerand

5、datalayer.Theoperationsandfunctionsoftheouterlayersarerealizedviathesupportservicesanddataoftheinnerlayers.Amongthekeytechnologies,extractionofinspectiongeometryinformationisrealizedintwoways:extractingdirectlyandbestfittingofelementdiscretepoints;andsampling

6、isearnedoutusingstepadaptivesubdivisionstrategybasedonregulardistribution;pathplanningmainlyinvolvessection-lineconstruction-basedcollisiondetectionbetweensurfacesandheuristicrules-basedcollisionavoidance;automaticprogrammingisimplementedinDMISformataccord

7、ingtothefunctionsandplanninginformation.Basedona3DCADplatformOpenCASCADE,theentiresystemwasrealizedandtherelevantexamplesshowthatthesystemcanaccomplishautomaticinspectionplanningtaskforcommonpartsefficien什y.Keywords：coordinatemeasuringmachine(CMM);CAD/CMMint

8、egration;OpenCASCADE;inspectionplanning;dimensionalmeasuringinterfacestandard(DMIS)1引言随着高速发展的机械制造业对产品质量控制提出越來越高的要求，以三朋标测晁机112](c(x)rdinatemeasuringmachines,CMM)为主导设备的计算机辅助检测规划(computeraid