间歇微量进给3D打印平台设计与进给误差分析  

Design of intermittent micro feed 3D printing platform and analysis of feed error

作　　者：赵永强[1,2] 李瑞超 常向龙 侯红玲 ZHAO Yongqiang;LI Ruichao;CHANG Xianglong;HOU Hongling(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723000,CHN;Shaanxi Key Laboratory of Industrial Automation,Hanzhong 723000,CHN)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723000 [2]陕西省工业自动化重点实验室,陕西汉中723000

出　　处：《制造技术与机床》2021年第3期49-53,58,共6页Manufacturing Technology & Machine Tool

基　　金：陕西省科技厅自然科学基础研究计划项目(2019JM-466);陕西省教育厅专项科研计划项目(18JK0148);陕西理工大学人才启动项目(SLGQD1811)。

摘　　要：针对现有逐层3D喷涂打印中采用伺服直线进给装置存在的打印层距大、分层精度低的缺陷,提出一种打印头固定、打印置物台间歇微量进给的单电机驱动的3D打印平台新方案,设计了一种基于不完全齿轮传动的间歇微量进给装置,建立了多参数组合的间歇微量进给的计算模型,推导了间歇传动机构实现正常工作的几何条件,计算了不同参数组合下间隙机构的运动误差,给出了不同匹配情况下产生误差的解决方法。最后,在MATLAB中通过一种实现逐层3D打印的具体算例验证了设计过程的正确性,给出了间歇微量进给装置实现最小进给误差的一种合理参数配对。In order to overcome the shortcoming of servo linear feeding device in 3D spraying printing,a new scheme of 3D printing platform driven by single motor with fixed printing head and intermittent micro-feeding of printing platform is proposed.A intermittent micro-feeding device based on incomplete gear transmission is designed,and a multi-parameter combination intermittent micro-feeding device is established.The calculation model,the geometric conditions of the intermittent transmission mechanism for normal operation are deduced,the kinematic errors of the clearance mechanism under different parameter combinations are calculated,and the solutions to the errors under different matching conditions are given.Finally,the correctness of the design process is verified by a practical example of 3D printing in MATLAB,and a reasonable combination of parameters for the realization of minimum feed error by intermittent micro-feed device is given.

关 键 词：逐层3D打印 3D打印平台 不完全齿轮传动 误差分析 

分 类 号：TH142.2[一般工业技术—材料科学与工程]