• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2021, Vol. 57 ›› Issue (21): 119-125.doi: 10.3901/JME.2021.21.119

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Investigation on Improving the Surface Quality of Fused Filament Fabrication Products by Low and Medium Frequency Vibration

JIANG Shijie1, HU Ke1, DONG Tiankuo1, ZHAN Ming2, DAI Weibing1   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819;
    2. College of Information Science & Engineering, Northeastern University, Shenyang 110819
  • Received:2020-10-30 Revised:2021-04-01 Online:2021-11-05 Published:2021-12-28

Abstract: Fused filament fabrication (FFF) has become one of the most widely used additive manufacturing technologies due to its simple operation, strong applicability, low manufacturing costs, etc. However, due to the layer-by-layer manufacturing characteristics, FFF products have obvious defects in surface quality compared with those fabricated by traditional methods. Since using vibration of low and medium frequency has great potential in improving the surface quality of FFF products, the piezoelectric ceramics are combined with the additive manufacturing equipment. An ordinary FFF equipment is firstly converted into a vibrating one; The output vibration of the piezoelectric ceramic can be controlled by controlling the input signal and voltage. Relevant testing samples are then prepared without and with different types of vibration vtilized, and the corresponding surface roughness measurements are carried out; Through the comparison between different samples' testing results, the influencing rule of the vtilized vibration is clarified. The results show that introducing vibration of low and medium frequency into FFF process can significantly improve the surface quality of FFF products, and it will be further improved with the increase of frequency or amplitude of the vtilized vibration.

Key words: fused filament fabrication, using vibration, piezoelectric ceramics, testing sample, surface quality

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