Jabłońska Monika
Faculty of Mechanical and Electrical Engineering, Polish Naval Academy, Jana Śmidowicza 69, 81-127 Gdynia, Poland.
Materials (Basel). 2025 Jul 2;18(13):3136. doi: 10.3390/ma18133136.
Hybrid machining has considerable potential for industrial applications. The process allows the limitations of additive manufacturing to be reduced and high-precision components to be produced. This article discusses tests determining the impact of 3D printing parameters, machining parameters, and selected milling tools on achieving defined surface roughness values in parts made of PETG (polyethylene terephthalate glycol). Perpendicular-shaped samples were printed by fused deposition modelling (FDM) using variable layer heights of 0.1 mm and 0.2 mm and variable feed rates of 90, 100, 110, and 120 mm/s. Surface roughness values, topography, and Abbott-Firestone curves were determined using a Keyence VR-6000 profilometer. Straight grooves were machined in the test samples using a DMG MORI CMX 600V milling machine with a rotary burr, single-edge spiral burr cutter and spiral endmill. The microstructure was examined using a Motic inverted microscope. The surface roughness parameters of the grooves were investigated. The results confirmed that the use of hybrid machining (with a printed layer height = 0.1 mm, = 120 mm/s, and a cutter-rotary burr) allows for lower surface roughness parameters, i.e., Ra = 1.54 μm. The relationships developed between printing, cutting, and milling tool parameters can be employed to predict the roughness parameters of filaments with similar characteristics.
混合加工在工业应用中具有相当大的潜力。该工艺能够减少增材制造的局限性，并生产出高精度的零部件。本文讨论了一些测试，这些测试确定了3D打印参数、加工参数以及所选铣刀对由聚对苯二甲酸乙二醇酯（PETG）制成的零件达到规定表面粗糙度值的影响。使用0.1毫米和0.2毫米的可变层高以及90、100、110和120毫米/秒的可变进给速度，通过熔融沉积建模（FDM）打印垂直形状的样品。使用基恩士VR - 6000轮廓仪测定表面粗糙度值、形貌和阿博特 - 费尔斯通曲线。使用配有旋转毛刺刀、单刃螺旋毛刺铣刀和螺旋立铣刀的德马吉森精机CMX 600V铣床在测试样品上加工直槽。使用麦克奥迪倒置显微镜检查微观结构。研究了槽的表面粗糙度参数。结果证实，采用混合加工（打印层高 = 0.1毫米， = 120毫米/秒，刀具为旋转毛刺刀）可获得更低的表面粗糙度参数，即Ra = 1.54μm。所建立的打印、切割和铣刀参数之间的关系可用于预测具有相似特性的长丝的粗糙度参数。
