Resumo

FALCON ANAYA, Christopher Edgar  e  GONZALEZ REY, Gonzalo. Geometric synthesis of spur gears with high pitting resistance. Ingeniería Mecánica [online]. 2021, vol.24, n.2, pp. 1-11.  Epub 16-Nov-2021. ISSN 1815-5944.

Abstract: In 2016, the ANSI-AGMA 2101-D04 standard gave the possibility to reformulate the evaluation for the contact stress on gears. Some popular computer programs for machine elements, such as Inventor 2021 and KISSsoft, incorporated new calculations of resistance to pitting and fracture in gears according to the mentioned standard, but even the optimal design based on ANSI-AGMA 2101-D04 has no presence in calculators of gears or specialized literature. The rational synthesis of a gear is complex due to number of variables, relations between them and limitations involved, which makes its development difficult. The objective of this research was to obtain a procedure for the calculation of the rational geometry of spur gears and high resistance to pitting, based on the ANSI-AGMA 2101-D04 standard. The procedure generates a rational geometric synthesis of spur gears with less contact stress and higher pitting strength in the conjugated teeth. Research results allow a better understanding of the relationships between gear geometry and its pitting resistance using the contact stresses. In addition, a block diagram of the basic algorithm and the influence of the radius of tooth profile on the pitting resistance of the active flanks of gear teeth are shown.

Palavras-chave : spur gear; pitting resistance; geometric synthesis; AGMA 2101.

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