熔融沉积3D打印机送丝机构挤出轮的研究  

Investigations on extrusion gear of feed mechanism of fused deposition 3D printer

作　　者：郭根清 王克用 GUO Genqing;WANG Keyong(School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620

出　　处：《上海工程技术大学学报》2023年第4期404-408,共5页Journal of Shanghai University of Engineering Science

摘　　要：送丝装置作为熔融沉积成型(FDM)3D打印机的核心部件之一,负责将打印耗材送入喷嘴,并完成打印.挤出轮是整个送丝装置的关键零件,整机工作时,挤出轮与打印耗材直接接触,依靠摩擦将打印耗材送入喷嘴.通过试验方式,研究挤出轮的齿形和齿数,对打印过程进给量以及打印件的质量进行分析.结果表明,斜齿挤出轮的挤出效率高于直齿和凹形齿,但在高速情况下会发生跳齿现象.在工作时,挤出轮的齿数越多,实际进给量越接近理论值.As one of the core components of the fused deposition 3D printer,the feed mechanism is responsible for feeding the filaments into the nozzle and completing the printing.The extrusion gear is the key part of the entire feed mechanism.When the whole machine is working,the extrusion gear is in direct contact with the filaments,and the filaments are fed into the nozzle by friction.The tooth shape and number of teeth of the extrusion gears are studied by means of experiments,and the feed rate in the printing process and the quality of the printed parts are mainly analyzed.The results show that the extrusion efficiency of the helical extrusion gear is higher than that of the straight and concave teeth,but the phenomenon of tooth skipping occurs at a high speed.When working,the more teeth of the extrusion gear,the closer the actual feed is to the theoretical value.

关 键 词：送丝装置 熔融沉积成型 挤出轮 进给量 

分 类 号：TH164[机械工程—机械制造及自动化]