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Open AccessArticle

Open-Source Grinding Machine for Compression Screw Manufacturing

by 1 and 2,3,*
1
Department of Mechanical Engineering–Engineering Mechanics, Michigan Technological University, Houghton, MI 49931, USA
2
Department of Material Science & Engineering and Department of Electrical & Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA
3
Department of Electronics and Nanoengineering, School of Electrical Engineering, Aalto University, FI-00076 Espoo, Finland
*
Author to whom correspondence should be addressed.
Inventions 2020, 5(3), 26; https://doi.org/10.3390/inventions5030026
Received: 28 May 2020 / Revised: 30 June 2020 / Accepted: 1 July 2020 / Published: 3 July 2020
(This article belongs to the Special Issue Modern Grinding Technology and Systems 2019)
Some of the most promising distributed recycling and additive manufacturing (DRAM) technical systems use fused particle fabrication (FPF) or fused granular fabrication (FGF), where compression screws force post-consumer waste plastic through a heated nozzle for direct 3D printing. To assist the technical evolution of these systems, this study provided the details of an invention for a low-cost, easily replicable open-source grinding machine for compression screw manufacturing. The system itself can be largely fabricated using FPF/FGF following the self-replicating rapid prototyper (RepRap) methodology. This grinding machine can be made from a cordless cut-off grinder and < $155 in parts. The new invention is demonstrated to be able to cut custom screws with variable (i) channel depths, (ii) screw diameters, (iii) screw lengths, (iv) pitches, (v) abrasive disk thicknesses, (vi) handedness of the screws, (vii) and materials (three types of steel tested: 1045 steel, 1144 steel, and 416 stainless steel). The results show that the device is more than capable of replicating commercial screws as well as providing makers with a much greater flexibility to make custom screws. This invention enables the DRAM toolchain to become even more self-sufficient, which assists the goals of the circular economy. View Full-Text
Keywords: grinding machine; open hardware; open-source hardware; open-source appropriate technology; compression screw; grinding; cylindrical grinding machine; recycling; material extrusion; angle grinder grinding machine; open hardware; open-source hardware; open-source appropriate technology; compression screw; grinding; cylindrical grinding machine; recycling; material extrusion; angle grinder
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MDPI and ACS Style

Franz, J.; Pearce, J.M. Open-Source Grinding Machine for Compression Screw Manufacturing. Inventions 2020, 5, 26. https://doi.org/10.3390/inventions5030026

AMA Style

Franz J, Pearce JM. Open-Source Grinding Machine for Compression Screw Manufacturing. Inventions. 2020; 5(3):26. https://doi.org/10.3390/inventions5030026

Chicago/Turabian Style

Franz, Jacob; Pearce, Joshua M. 2020. "Open-Source Grinding Machine for Compression Screw Manufacturing" Inventions 5, no. 3: 26. https://doi.org/10.3390/inventions5030026

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