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Open AccessArticle

Design and Prototyping of Miniaturized Straight Bevel Gears for Biomedical Applications

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DIMEG, University of Calabria, 87036 Rende (CS), Italy
2
Magna Graecia University of Catanzaro, 88100 Germaneto (CZ), Italy
3
Calabrian High Tech—CHT S.r.l., 87036 Rende (CS), Italy
*
Author to whom correspondence should be addressed.
Machines 2019, 7(2), 38; https://doi.org/10.3390/machines7020038
Received: 8 May 2019 / Revised: 29 May 2019 / Accepted: 31 May 2019 / Published: 4 June 2019
(This article belongs to the Special Issue Advances of Italian Machine Design)
This paper presents a semi-automated design algorithm for computing straight bevel gear involute profiles. The proposed formulation is based on the Tredgold approximation method. It allows the design of a pair of bevel gears with any desired number of teeth and relative axes inclination angles by implementing additive manufacturing technology. A specific case study is discussed to calculate the profiles of two straight bevel gears of a biomedical application. Namely, this paper illustrates the design of the bevel gears for a new laparoscopic robotic system, EasyLap, under development with a grant from POR Calabria 2014–2020 Fesr-Fse. A meshing analysis is carried out to identify potential design errors. Moreover, finite element-based tooth contact analysis is fulfilled for determining the vibrational performances of the conjugate tooth profiles throughout a whole meshing cycle. Simulation results and a built prototype are reported to show the engineering feasibility and effectiveness of the proposed design approach. View Full-Text
Keywords: bevel gears; gear design; Tredgold; numerical simulations bevel gears; gear design; Tredgold; numerical simulations
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MDPI and ACS Style

Acinapura, A.; Fragomeni, G.; Greco, P.F.; Mundo, D.; Carbone, G.; Danieli, G. Design and Prototyping of Miniaturized Straight Bevel Gears for Biomedical Applications. Machines 2019, 7, 38.

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