The Design and Analysis of 3D Braiding Mechanism Based on a Small-Size Additive Manufacturing Technology Reinforced by Continuous Fiber

Abstract

The three-dimensional fabric fabricated by three-dimensional braiding technology can remedy the defects of poor interlayer bonding of continuous fiber reinforced polymer composites, but the traditional three-dimensional braiding machines are not applicable for the braiding of small special-shaped structures. Therefore, a small aperture braiding technology based on truss structure is proposed in this paper, which can fabricate small special-shaped structures. Firstly, based on 3D printing continuous fiber reinforced polymer technology and 3D braiding technology, this paper given definitely basic project for solving problem and integrated techniques flow. Then, according to the size of the required braided structure and referring to the cable-driven interventional catheter technology applied to the treatment of cardiovascular diseases, the principle of 3D braiding technology is introduced and the structural design of 3D braiding head is completed. Finally, according to different fabric structures, the trajectory planning of each braiding mechanism is realized, and their simulated motions are imitated by the software of Adams to obtain motion trajectory figures.