汽车头灯模具自由曲面数字化检测关键技术  

Research on Key Technology of Digital Inspection of Free-form Surfacein Automobile Headlamp Die

作　　者：陶军[1] 邢渊[1] 张永清[1] 

机构地区：[1]上海交通大学塑性成形工程系,上海200030

出　　处：《模具技术》2002年第2期3-6,共4页Die and Mould Technology

摘　　要：含功能性自由曲面产品的高质量制造需要精确的测量和检测。用传统的手工方法检测缺乏基准特征的自由曲面 ,精度差且自动化程度低 ;而基于 3D测量学的坐标测量系统提供了准确而科学的自由曲面检测手段。本文阐述了自由曲面数字化检测的关键技术 ,即曲面的数字化、自由曲面的配准和比较分析与误差评定。讨论了数字化检测在设计、制造和产品质量保证等成形系统各个阶段中的应用 ,并以汽车头灯反射器为例表明了精确数字化检测的实用价值。High quality manufacturing of parts with functional free form surface requires precision measurement and inspection. Owing to absence of clearly defined datum features, inspection using traditional systems based on 3D metrology provides precise and scientific tools for inspection of free form surface. Several key technologies in digital inspection of free form surfaces are discussed including digitization of free form surface, registration of free form surfaces and comparison analysis and error assessment. Applications of digital inspection are analyzed in design, manufacturing and parts quality assurance, and demonstrated with headlamp reflector.

关 键 词：汽车 头灯 模具 自由曲面 数字化 检测 

分 类 号：U463.651[机械工程—车辆工程] TP391.7[交通运输工程—载运工具运用工程]