An experimental demonstration of effective Curved Layer Fused Filament Fabrication utilising a parallel deposition robot
An experimental demonstration of effective Curved Layer Fused Filament Fabrication utilising a parallel deposition robot
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DOI：
10.1016/j.addma.2015.09.001
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发表时间：
2015-10-01
影响因子：
11
通讯作者：
Trask, Richard S.
中科院分区：
文献类型：
--
作者：
Allen, Robert J. A.;Trask, Richard S.
熔丝制造（FFF）是一种增材制造（AM）方法，其依赖于热塑性原料从移动的沉积头的热挤出。传统的FFF使用在每个单独层中具有固定z值的刀具路径，从单个挤出层的堆叠构造零部件。因此，由于在各个层之间发生的相对弱的热熔结合以及浅倾斜轮廓中的差的表面光洁度，所制造的部件通常在z轴上包含固有的弱点。这项研究表明，使用弯曲层FFF（CLFFF）的工具路径串联与市售的平行，或三角洲，风格的FFF系统，使沉积头遵循的拓扑结构的组成部分。通过以这种方式结合三角形机器人和CLFFF工具路径，已经观察到所制造的零件的表面光洁度的改进，并且与基于笛卡尔机器人的CLFFF制造相关联的时间成本已经显著降低。此外，采用三角形机器人为CLFFF制造提供了额外的灵活性，并增加了其应用于先进制造的可行性。该研究还证明了一种可行的方法，多材料FFF解耦的支持结构和零件制造到CLFFF和静态z工具路径的区域，以适当的方式。(C)2015年，作者。由爱思唯尔公司出版
Fused Filament Fabrication (FFF) is an additive manufacturing (AM) method that relies on the thermal extrusion of a thermoplastic feedstock from a mobile deposition head. Conventional FFF constructs components from stacks of individual extruded layers using tool paths with fixed z-values in each individual layer. Consequently, the manufactured components often contain inherent weaknesses in the z-axis due to the relatively weak thermal fusion bonding that occurs between individual layers, as well as poor surface finish in shallow sloped contours. This study demonstrates the use of Curved Layer FFF (CLFFF) tool paths in tandem with a commercially available parallel, or delta, style FFF system to allow the deposition head to follow the topology of the component. By incorporating a delta robot and CLFFF tool paths in this way, improvements in the surface finish of the manufactured parts has been observed, and time costs associated with Cartesian robot based CLFFF manufacturing have been notably reduced. Furthermore, employing a delta robot provides additional flexibility to CLFFF manufacturing and increases the feasibility of its application for advanced manufacturing. The study has also demonstrated a viable approach to multi-material FFF by decoupling support structure and part manufacture into regions of CLFFF and static z tool pathing in an appropriate fashion. (C) 2015 The Authors. Published by Elsevier B.V.