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熔融沉积3D打印机送丝机构挤出轮的研究

郭根清 王克用

郭根清, 王克用. 熔融沉积3D打印机送丝机构挤出轮的研究[J]. 上海工程技术大学学报, 2023, 37(4): 404-408. doi: 10.12299/jsues.22-0287
引用本文: 郭根清, 王克用. 熔融沉积3D打印机送丝机构挤出轮的研究[J]. 上海工程技术大学学报, 2023, 37(4): 404-408. doi: 10.12299/jsues.22-0287
GUO Genqing, WANG Keyong. Investigations on extrusion gear of feed mechanism of fused deposition 3D printer[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 404-408. doi: 10.12299/jsues.22-0287
Citation: GUO Genqing, WANG Keyong. Investigations on extrusion gear of feed mechanism of fused deposition 3D printer[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 404-408. doi: 10.12299/jsues.22-0287

熔融沉积3D打印机送丝机构挤出轮的研究

doi: 10.12299/jsues.22-0287
详细信息
    作者简介:

    郭根清(1997−),男,硕士,研究方向为3D打印. E-mail:genqing_guo@126.com

    通讯作者:

    王克用(1975−),男,副教授,博士,研究方向为高性能有限元和3D打印协同系统. E-mail:keyong_wang@126.com

  • 中图分类号: TH164

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

  • 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.
  • 图  1  耗材挤出原理图

    Figure  1.  Schematic diagram of consumable extrusion

    图  2  挤出轮齿数

    Figure  2.  Teeth numbers of extrusion gear

    图  3  挤出轮齿形

    Figure  3.  Tooth profiles of extrusion gear

    图  4  测试模型

    Figure  4.  Test model

    表  1  挤出轮步进值

    Table  1.   Extrusion gear step value

    挤出轮直径/mm步长/mm−1
    a~c1192.599
    d10101.859
    e8127.324
    f11.687.810
    下载: 导出CSV

    表  2  打印参数设置

    Table  2.   Printing parameter settings

    工艺参数参数值
    喷嘴直径/ mm0.4
    喷嘴温度/ ℃215
    层高/ mm0.2
    打印速度/ (mm•s−1)40
    热床温度/ ℃55
    打印材料PLA +
    材料密度/ (g•cm−3)1.25
    下载: 导出CSV

    表  3  相同打印参数下各挤出轮的测试模型打印件质量

    Table  3.   Test model print quality of each extrusion gear under the same printing parameters

    挤出轮理论值/g实测值/g平均值/g误差率/%
    模型1模型2模型3
    a2.041.821.771.771.78712.42
    b2.041.841.841.821.83310.13
    c2.041.831.811.821.82010.78
    d2.041.811.801.801.80311.60
    f2.041.881.891.841.8708.33
    下载: 导出CSV

    表  4  挤出速度为5 mm/s时,各挤出轮的理论进给量和测量进给量

    Table  4.   Theoretical and measured feeds of each extrusion gears when the extrusion speed is 5 mm/s

    理论值/mm挤出轮a 挤出轮b 挤出轮c 挤出轮d 挤出轮f
    测量值/mm误差率/%测量值/mm误差率/%测量值/mm误差率/%测量值/mm误差率/%测量值/mm误差率/%
    5 4.86 2.80 4.91 1.80 4.91 1.80 4.86 2.80 4.89 2.20
    10 9.82 1.80 9.86 1.40 9.81 1.90 9.84 1.60 9.90 1.00
    15 14.78 1.47 14.85 1.00 14.75 1.67 14.76 1.60 14.78 1.47
    20 19.74 1.30 19.76 1.20 19.81 0.95 19.68 1.60 19.77 1.15
    25 24.67 1.32 24.70 1.20 24.74 1.04 24.62 2.48 24.66 1.36
    30 29.63 1.23 29.58 1.40 29.64 1.20 29.41 2.03 29.87 0.43
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-09-26
  • 刊出日期:  2023-12-30

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