CAJ | 학술논문

螺旋气道气缸盖是汽车发动机的重要零部件之一,对发动机的混合气形成与燃烧、充量更换等方面具有决定性的影响.本文在逆向工程设计思想的指导下,就螺旋气道特有的结构和技术要求,使用非接触式的扫描方法扫描气道样件.由于实际测量过程中受到各种人为或随机因素的影响,使得测量结果包含噪声点大量的冗余数据,并且数据间缺乏明显的拓扑关系,这样就不利于后续的螺旋气道的重构工作.本文针对激光三维扫描方法得到的螺旋气道的点云数据,采用了快速、有效地处理技术.在最大程度上获得了较好的点云数据结果,为后续的曲线曲面重构工作做出了理想的处理过程.
라선기도기항개시기차발동궤적중요령부건지일,대발동궤적혼합기형성여연소、충량경환등방면구유결정성적영향.본문재역향공정설계사상적지도하,취라선기도특유적결구화기술요구,사용비접촉식적소묘방법소묘기도양건.유우실제측량과정중수도각충인위혹수궤인소적영향,사득측량결과포함조성점대량적용여수거,병차수거간결핍명현적탁복관계,저양취불리우후속적라선기도적중구공작.본문침대격광삼유소묘방법득도적라선기도적점운수거,채용료쾌속、유효지처리기술.재최대정도상획득료교호적점운수거결과,위후속적곡선곡면중구공작주출료이상적처리과정.
Helical Duct is one of the important main parts in Auto Engines, which has a decisive effect on many performance, such as Mixture Formation and Combustion, Charge Replacement and so on. Under the guidance of reverse engineering design thinking, based on the special structure and technical requirement, this paper scans the Helical Duct sample by a laser-scanning non-contact measuring method. Because of the kinds of effect of human or random factors, maybe, there are a large number of redundant data in the result, moreover , among which it is lack of obvious Topological Relation. Thus, it would go against to the reconstruction of Helical Duct later. Aiming at the Cloud Data acquired from the measurement Technology of 3D Laser Scanning, this paper follows fast and effective Preconditioning Technique. To a great extent, it will gain better Cloud Data result, in addition, it will offer a perfect processing procedure for the following Free Curve and Surface Reconstruction.