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Strength analysis of the polyoxymethylene cycloidal gears of the gerotor pump

Stryczek J., Bednarczyk S., Biernacki K.

Archives of Civil and Mechanical Engineering

2014

Vol. 14, no. 4

647--660

The aim of the article is to present strength analysis of a POM gear system used in the gerotor pump, as well as to determine the design rules in terms of strength. A computational model of the gear system in the gerotor pump has been developed and subjected to the FEM strength analysis carried out. The research has shown that the stress and deformations of the gear system are influenced by design factors, namely by the tooth profile, the gear-shaft connection type, as well as by the mechanical and hydraulic loads working on the system. It has been concluded that the load-carrying capacity limit for the gears ought to be defined based on the POM gears deformation and thus generated additional internal clearances in the gerotor pump which cause uncontrolled leakage in the pump and limit the discharge process. It has also been concluded that the POM gears can be loaded with pressure p = 6–8 MPa. As a result of the analysis, the principles of designing the gerotor pump gear system have been specified. According to the principles, a model of the gerotor pump has been produced. The model has been presented in the further paper.

Wykorzystanie technik RP w prototypowaniu i badaniach przekładni zębatych z tworzyw polimerowych

Sobolak M., Jagiełowicz P.

Czasopismo Techniczne. Mechanika

2010

R. 107, z. 1-M

159-169

W niniejszym artykule przedstawiono różne obszary zastosowań technologii szybkiego prototypowania w prototypowaniu i badaniach przekładni z tworzyw sztucznych. Technologie szybkiego prototypowania używane są klasycznie do tworzenia trójwymiarowych modeli na podstawie modeli numerycznych. Przedstawiono także inne możliwości zastosowania tych technologii a mianowicie w odniesieniu do badań. Z technologii tych skorzystano w elastooptyce i w badaniu śladu styku.

The paper shows different applications of Rapid Prototyping techniques for prototyping and research of polymer transmissions. Rapid Prototyping techniques are classically used to create 3D models on the basis of numerical models. In the paper are also shown the possibilities of usage of these techniques, namely with reference to research. The technologies are used in the photo-elasticity and research of tooth contact analysis.