Analysis of the Impact of Changes in Thermomechanical Properties of Polymer Materials on the Machining Process of Gears

Gnatowski, A.; Gołębski, Rafał; Sikora, Piotr

doi:10.3390/polym13010028

Cited by 13 publications

(14 citation statements)

References 8 publications

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“…[ 1 , 2 , 3 , 4 ]. These polymer gears can be produced by classical cutting processes or, for large series production, by injection moulding [ 5 , 6 ]. Some of the main benefits of polymer gears are high size-weight ratio, low coefficient of friction, self-lubrication, high resistance against impact loading, ability to absorb and damp vibration, reduced noise, ability to be used in food preparation areas, etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Wear Behaviour of Coated Polymer Gears

et al. 2021

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A comprehensive experimental investigation of the wear behaviour of coated spur polymer gears made of POM is performed in this study. The three physical vapour deposition (PVD) coatings investigated were aluminium (Al), chromium (Cr), and chromium nitrite (CrN). Al was deposited in three process steps: By plasma activation, metallisation of Al by the magnetron sputtering process, and by plasma polymerisation. Cr deposition was performed in only one step, namely, the metallization of Cr by the magnetron sputtering process. The deposition of CrN was carried out in two steps: the first involved the metallization of Cr by the magnetron sputtering process while the second step, vapour deposition, involved the reactive metallisation of Cr with nitrogen, also by the magnetron sputtering process. The gears were tested on an in-house developed testing rig for different torques (16, 20, 24 and 30 Nm) and rotational speed of 1000 rpm. The duration of the experiments was set to 13 h, when the tooth thickness, and, consequently, the wear of the tooth flank was recorded. The experimental results showed that the influence of metallisation with aluminium, chromium, and chromium nitrite surface coatings on the wear behaviour of the analysed polymer gear is not significant. This is probably due to the fact that the analysed coatings were, in all cases, very thin (less than 500 nm), and therefore did not influence the wear resistance significantly. In that respect, an additional testing using thicker coatings should be applied in the further research work.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Wear Behaviour of Coated Polymer Gears

et al. 2021

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“…Problem of significant deformation during contact of two gears and problem of significant wear of two gears toots in contact. These problems can also affect the gear ratio [20][21][22]. To solve these problems additional modification of spur gear profile can be carried out [23].…”

Section: Rapid Prototypingmentioning

confidence: 99%

Planetary Gearbox Prototype Development and Manufacturing

Smajic

Šarić

Muminovic

et al. 2021

Teh. glas. (Online)

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Goal of this research was to develop and manufacture planetary gearbox prototype using rapid prototyping technology (additive manufacturing). Developed prototype was used to visually analyse the design of the planetary gearbox. Also, it was used to improve and innovate education of students on several courses at Mechanical Design study program at Faculty of Mechanical Engineering. It is shown that low cost rapid prototyping technology can be used to manufacture prototypes of complex machines and machine elements. Prototypes manufactured using this technology have same functionality like the real one. Main limitation is the fact that they cannot sustain real world loads and stresses. This paper shows opportunities which low cost rapid prototyping technology is offering in improvement and innovation of education process at engineering schools and faculties. All complex and heavy machines can be manufactured using this type of technology and on that way more precisely presented to the students.

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“…Goriparthi et al [ 10 ] analysed the performance evaluation of composite gears by varying weight function, and they confirmed a positive influence of composites on mechanical properties. Gnatowski et al [ 11 ] presented an analysis of the impact upon the modification of thermomechanical properties of polymers on the gear meshing teeth process. The experimental results showed positive changes in the material strength for PVDA (Tecaflon) and PE (Polyethylene) after heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Noise Evaluation of S-Polymer Gears

et al. 2022

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In this study, an acoustic behaviour of S-polymer gears made of the material combination POM/PA66 was investigated and compared to the standardised involute gears (E-gears). Basic evaluating characteristics included noise during operation, which is of particular significance when noise reduction is expected. The measured signals were analysed in time and frequency domains and the levels of acoustic activity were compared. The experimental results have shown that the sound pressure level of both E- and S-polymer gears are proportional to the torque. However, the comprehensive noise evaluation has shown some advantages of S-polymer gears if compared to the E-polymer gears. In that respect, S-polymer gears were found more appropriate for noise reduction of gear drive systems in the case of normal loading and typical drive speed. Future studies in the operating behaviour of S-polymer gears could also cover noise evaluation using new methods of sound signal analysis at different temperatures of gears.

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Analysis of the Impact of Changes in Thermomechanical Properties of Polymer Materials on the Machining Process of Gears

Cited by 13 publications

References 8 publications

Experimental Investigation of the Wear Behaviour of Coated Polymer Gears

Experimental Investigation of the Wear Behaviour of Coated Polymer Gears

Planetary Gearbox Prototype Development and Manufacturing

Noise Evaluation of S-Polymer Gears

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