Technical assessment of 3D-printed spur gears produced from recycled PLA

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Plastic gears are primarily utilised in manufacturing and automotive industries due to their quiet operation, resistance corrosion, lightweight characteristics. Traditionally, injection moulding (IM) has been the preferred method for producing gears. However, high cost associated with IM made additive (otherwise known as “3D printing”) an increasingly attractive alternative. This study investigated potential benefits of 3D-printed spur from three distinct types polylactic acid (PLA) materials: recycled PLA (rPLA), blended PLA, virgin (vPLA). Gears varying tooth counts were designed based on commercially available models printed using optimised printing parameters, including layer height, infill density nozzle temperature. The performance polymer depends several engineering characteristics, wear resistance, running load, speed, operating To assess these factors, sound, temperature, loss, rate, service life measured a custom-built testing machine at rotational speeds 500, 1000, 1500 rpm under torque 1.5 Nm. results compared those injection-moulded nylon same conditions. experimental findings revealed that rPLA exhibited poorest across all metrics. In contrast, demonstrated characteristics similar vPLA gears, although they still fell short

Language: Английский

Manufacturing issues with 3D-printed gears mechanical properties

Design of Machines and Structures, Journal Year: 2024, Volume and Issue: 14(2), P. 74 - 83

Published: Nov. 30, 2024

Additive manufacturing, often known as 3D printing, is substantially revolutionizing the industrial environment by turning new ideas into tangible items. This technology promotes innovation in various industries, like healthcare, aerospace and automotive, allowing for development of sophisticated, one-of-a-kind designs while reducing waste expenses. Prompting improvements production, additive manufacturing demonstrates a great deal design variation also being very efficient. reforms traditional production techniques makes solutions that were previously impossible. research delves mechanical properties challenges additively manufactured 3D- printed gears. The evaluation gear performance focuses on influence essential characteristics, including analysis printing orientation infill patterns, among other factors. Mechanical such tensile bending strength rise horizontal direction; conversely, vertical structure, reverse true. Concentric, grid-like patterns improve materials PLA PLA+ surface quality. study examines significant challenges, thermal expansion air gaps affect reliability. Effective require refining designs, enhancing heat dissipation, optimizing material properties. findings comprehension how 3D-printing parameters performance, offering valuable insights manufacture durable, high-performance 3D-printed gears applications.

Language: Английский

Service Life and Failure Analysis of Nylon, Polycarbonate, and IGUS i180 Polymer Gears Made by Additive Manufacturing

Machines, Journal Year: 2024, Volume and Issue: 13(1), P. 5 - 5

Published: Dec. 25, 2024

An assessment of different materials for additive manufacturing (AM) polymer gears is presented in this research. Experimental testing carried out three materials. Two are selected as the most common used made by manufacturing. These nylon and polycarbonate (PC). The third material IGUS i180, which a tribological specially developed parts with demands high resistance properties such to friction, wear, temperatures essential long service life gears. Gears experimentally tested determine form operating cycles until failure. In addition, gear temperature monitored during experimental testing. Using value maximum at moment total failure specific load level enables categorization type. Different types failures categorized presented. Taking into consideration type cycles, applicability analyzed applications concerning load, speed, thermal conditions discussed end paper. main goal research was test i180 compare its mechanical other commonly manufactured AM, (PA6/66) showed inferior design case loads. This that PA6/66 still best solution production using but material, due constraints, quite limited.

Language: Английский