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工程设计学报
工程设计学报  2019, Vol. 26 Issue (1): 110-115    DOI: 10.3785/j.issn.1006-754X.2019.01.015
整机和系统设计     
基于混合坐标系的FDM型3D打印机研制
曹文意1,2, 陈继民1,2, 袁艳萍1,2, 刘思达1,2
1. 北京市数字化医疗3D打印工程技术研究中心, 北京 100124;
2. 北京工业大学 激光工程研究院, 北京 100124
Development of FDM 3D printer based on hybrid coordinate system
CAO Wen-yi1,2, CHEN Ji-min1,2, YUAN Yan-ping1,2, LIU Si-da1,2
1. Beijing Engineering Research Center of 3D Printing for Digital Medical Health, Beijing 100124, China;
2. Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China
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摘要：

传统FDM（fused deposition molding，熔融沉积成型）型3D打印机在打印倒体件的过程中需设置辅助支撑结构，打印完成后去除支撑结构，这会导致成型件的精度降低。为解决传统FDM型3D打印机存在的问题，设计了一种基于混合坐标系的FDM型3D打印机。将基于笛卡尔坐标系的运动方式转换为基于拟球坐标系的运动方式，由X-Z平面内的旋转运动、X-Y平面内的旋转运动和Z轴方向的直线运动组合成拟球坐标系内的运动，达到无支撑3D打印的目的。介绍了基于混合坐标系的FDM型3D打印机控制系统的硬件和软件设计。用传统FDM型和基于混合坐标系的FDM型3D打印机进行打印实验并作对比，结果表明在同等级精度硬件配置的情况下，基于混合坐标系的FDM型3D打印机可以实现更高的打印精度。基于混合坐标系的FDM型3D打印机创新性强、造价低，拥有自主知识产权，具有广阔的市场前景。
关键词： 3D打印;  混合坐标系;  倒体打印;  无支撑    
Abstract:

Traditional FDM(fused deposition molding)3D printer needs to set up auxiliary foothold structure when it prints inverted parts, and the foothold structure needs to be removed from the prints after printing, which will reduce the precision of prints. In order to solve the problem, a FDM 3D printer based on hybrid coordinate system was designed. The principle of motion in new FDM 3D printer was based on quasi-spherical coordinate system instead of Cartesian coordinate system. The rotational motion in X-Z plane and X-Y plane combined with the linear motion in Z-axis direction made up the motion in quasi-spherical coordinate system, to realize the unsupported 3D printing. The hardware and software design for control system of the FDM 3D printer based on hybrid coordinate system was introduced. Printing experiments were performed by using traditional FDM 3D printer and FDM 3D printer based on hybrid coordinate system. The comparison result showed that the FDM 3D printer based on hybrid coordinate system had higher printing accuracy under the same level of precision hardware configuration. The FDM 3D printer based on hybrid coordinate system has high innovation and low cost with independent intellectual property rights, and it has vast market prospect.
Key words: 3D printing    hybrid coordinate system    inverted printing    no foothold
收稿日期: 2018-07-10 出版日期: 2019-02-28
CLC:  TP23  
基金资助:

北京市自然科学基金资助项目（Z140002）；北京市科技创新项目（Z141100002814001）
通讯作者: 陈继民(1965-),男,北京人,教授,博士,从事激光微加工与激光3D打印技术研究,E-mail:jimin@bjut.edu.cn     E-mail: jimin@bjut.edu.cn
作者简介: 曹文意(1993-),男,湖北武汉人,硕士生,从事3D打印、扫描技术研究,E-mail:bjutcaowenyi@163.com,https://orcid.org/0000-0002-5251-0340
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引用本文:

曹文意, 陈继民, 袁艳萍, 刘思达. 基于混合坐标系的FDM型3D打印机研制[J]. 工程设计学报, 2019, 26(1): 110-115.

CAO Wen-yi, CHEN Ji-min, YUAN Yan-ping, LIU Si-da. Development of FDM 3D printer based on hybrid coordinate system. Chinese Journal of Engineering Design, 2019, 26(1): 110-115.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2019.01.015    或    https://www.zjujournals.com/gcsjxb/CN/Y2019/V26/I1/110

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