EXPERIMENTAL DETERMINATION OF THE OPTIMUM CUTTING TOOL FOR CNC MILLING OF 3D PRINTED PLA PARTS


Kartal F., Kaptan A.

International Journal of 3D Printing Technologies and Digital Industry, cilt.7, sa.2, ss.150-160, 2023 (Hakemli Dergi)

Özet

The purpose of this study is to determine the most suitable cutting tool for achieving the desired diameter
dimensions in parts produced using PLA material in a 3D printer. A plastic plate in the shape of a
rectangular prism with dimensions of 90x40x10 mm was printed without holes with a 100% filling ratio
in a 3D printer. A belt-pulley mechanism requiring bearing assembly was designed, manufactured, and
tested for applicability. The study successfully identified the optimum parameters for achieving a 15
mm diameter measurement with the desired tolerance in PLA material without causing melt damage.
These parameters are spindle speed of 15000 rpm, feed rate of 500 mm/min, cutting depth of 0.5 mm,
minimum end mill diameter of 10 mm, and 4 cutting edges. The study also found that the morphological
properties of the PLA workpiece were affected by the cutting process of different diameter milling
cutters. This study investigated the optimal milling cutter for drilling holes in 3D-printed PLA parts.
The method was found successful, allowing for manufacturing flexibility and reduced waste. Results
provide insights for improving post-processing efficiency and sustainability in 3D printing.