基于逆向工程及3D打印技术的误差分析应用研究

发布时间：2018-01-14 03:12

本文关键词：基于逆向工程及3D打印技术的误差分析应用研究　出处：《华东理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着新产品的不断推出,人们对外形复杂产品的更新速度的需求也大大超乎以往,需要一种快速且行之有效的新的设计方法,逆向工程技术便由此产生。它和近些年来越发收到关注的3D打印技术,可谓相辅相成,很多打印的模型数据就是靠逆向工程获得,很多逆向的造型需要3D打印来验证。与此同时,人们对产品的加工要求越来越高,切削金属的数控刀具也在悄然发生变化,例如几何角度及槽型,传统数控刀具的设计研发已越来越无法满足快节奏的需求。本文应用这些新技术,探究了一种基于逆向工程及3D打印技术在三维数控铣削刀片成型制造的研究。通过误差分析实验检测,验证了这种应用的可行性。论文首先阐述了逆向工程中的关键技术,对造型数据的误差做了分析；随后阐述了3D打印的相关技术,尤其对FDM技术分析打印中的误差来源及解决方法。接下来以典型的复杂曲面——可转位三维铣削刀片,为例,对其通过Creaform手持式扫描仪进行数据获取、Geomagic Studio软件进行数据处理、和CATIA软件进行曲面重构,最后应用Dimension设备进行3D打印,完成从逆向到3D打印的整套实验过程,并对比分析最终的打印件尺寸与铣削刀片样件的尺寸之间的误差。最后得出结论：这种基于逆向工程及3D打印的技术可以有效的提高设计制造复杂具有曲面的产品的效率,在精度方面基本能达到要求,在转角处等地方出现较大误差。针对这些问题,论文也提出了相应的改善措施,为今后的进一步研究提供了参考。
[Abstract]:With the continuous introduction of new products, the demand for the renewal speed of complex products is much higher than before, which requires a fast and effective new design method. As a result, reverse engineering technology and 3D printing technology, which has received more and more attention in recent years, can be said to complement each other. Many of the printed model data are obtained by reverse engineering. Many reverse modeling needs to be verified by 3D printing. At the same time, the machining requirements of products are becoming higher and higher, and NC cutting tools for cutting metal are changing quietly, such as geometric angles and grooves. The design and development of traditional NC tools have been more and more unable to meet the needs of fast rhythm. This paper applies these new technologies. Based on reverse engineering and 3D printing technology, the research of 3D NC milling blade molding and manufacturing is studied. The error analysis experiment is carried out. The feasibility of this application is verified. Firstly, the key technology of reverse engineering is described, and the error of modeling data is analyzed. Then the related technology of 3D printing is described, especially the error source and solution of FDM technology. Then the typical complex curved surface-indexable 3D milling blade is taken as an example. The data acquisition software Geomagic Studio is processed by Creaform handheld scanner, and the surface reconstruction is carried out by CATIA software. Finally, 3D printing is carried out by using Dimension equipment, and the whole experiment process from reverse to 3D printing is completed. The error between the final print size and the size of the milling blade sample is compared and analyzed. Finally, the conclusion is drawn:. This technology based on reverse engineering and 3D printing can effectively improve the efficiency of designing and manufacturing complex products with curved surfaces. In terms of accuracy, there is a big error in the corner and so on. In view of these problems, the paper also puts forward the corresponding improvement measures, which provides a reference for further research in the future.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG71;TP391.73

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