Jiang Xin, Koike Ryo
Research and Development Department, Kanagawa Institute of Industrial Science and Technology, 705-1 Shimoimaizumi, Ebina, Kanagawa, 243-0435, Japan.
Department of System Design Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, Kanagawa, 223-8522, Japan.
Sci Rep. 2023 Aug 30;13(1):14224. doi: 10.1038/s41598-023-40018-7.
Additive manufacturing (AM) has gained significant attention in recent years owing to its ability to quickly and easily fabricate complex shapes and geometries that are difficult or impossible to achieve with traditional manufacturing methods. This study presents the development of a high-gravity material extrusion (HG-MEX) system, which generates a high-gravity field through centrifugal acceleration. In this process, the material is dissolved by heating the nozzle and subsequently deposited on the construction platform. The primary objective of this research is to evaluate the positive effects of gravity on material extrusion (MEX), which is a key aspect of AM. To accomplish this, a combined machine comprising a MEX unit and centrifuge is constructed. This HG-MEX system is used to analyze and reflect the influence of gravity on the material extrusion. The experimental evaluations demonstrate that the application of high gravity is a promising approach to improve the shape accuracy and performance of the parts fabricated through MEX. Notably, our results confirm the feasibility of utilizing MEX under high gravity to enhance performance in AM processes.
近年来，增材制造（AM）因其能够快速轻松地制造出传统制造方法难以或无法实现的复杂形状和几何结构而备受关注。本研究展示了一种高重力材料挤出（HG-MEX）系统的开发，该系统通过离心加速度产生高重力场。在此过程中，材料通过加热喷嘴溶解，随后沉积在构建平台上。本研究的主要目的是评估重力对材料挤出（MEX）的积极影响，而材料挤出是增材制造的一个关键方面。为实现这一目标，构建了一台包括MEX单元和离心机的组合机器。该HG-MEX系统用于分析和反映重力对材料挤出的影响。实验评估表明，施加高重力是提高通过MEX制造的零件形状精度和性能的一种有前景的方法。值得注意的是，我们的结果证实了在高重力下利用MEX提高增材制造过程性能的可行性。
