Topic
Epitrochoid
About: Epitrochoid is a research topic. Over the lifetime, 81 publications have been published within this topic receiving 568 citations.
Papers published on a yearly basis
Papers
TL;DR: In this article, the effect of machining tolerances on backlash and torque ripple on cycloidal speed reducer was investigated and it was found that both the backlash and the torque ripple are inherent periodic functions of the input crank angle.
Abstract: The cycloidal speed reducer, or cycloid drive, is an epicyclic gear train in which the profile of the planet gear is an epitrochoid and the annular sun gear has rollers as its teeth. The cycloid drive has very high efficiency and small size, in comparison with a conventional gear mechanism, making it an attractive candidate for limited space applications. In this paper an analytical model is developed which models the cycloid drive with machining tolerances. Consequently, the effect of machining tolerances on backlash and torque ripple are investigated. It is found that both the backlash and the torque ripple are inherent periodic functions of the input crank angle
107 citations
TL;DR: In this paper, the authors proposed a gerotor profile design based on the theory of gearing, whose inner rotor curve is the inner rotor and whose conjugate profile is the outer rotor, and the analysis assessed the feasibility of three different design curves: an epitrochoid curve, a hypotrochoidal curve and a curve made by continuously connecting the epicycloid and hypocycloid.
Abstract: This paper proposes a gerotor profile design based on the theory of gearing. Presented first is the curve of the outer rotor, whose conjugate profile is the inner rotor. Next, the analysis assesses the feasibility of three different design curves: an epitrochoid curve, a hypotrochoidal curve, and a curve made by continuously connecting the epicycloid and hypocycloid. The undercutting equation derived from the mathematical model-which is presented in parametric form-facilitates identification of the design parameter limits, while the sealing property and nonundercutting on the profile are estimated using curvature analyses. Finally, the offset concept is applied to the gerotor design. First, two conjugate curves are obtained, whose offset curves are then found. Pump performance-including area efficiency and sealing-is also compared for these designs, which include both offset and nonoffset rotor profiles.
45 citations
TL;DR: In this article, a kinematic analysis has been carried out to investigate the pattern of rolling and sliding at the load transmitting (active) contact regions in rotary piston machines with modified epitrochoids.
29 citations
TL;DR: In this paper, a modified cycloid reducer with an epitrochoid tooth profile was designed and tested with nine different design scenarios for the reducer, and finite element analysis showed that the cycloid gear had higher rigidity than the involute gear.
24 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2020 | 1 |
| 2019 | 3 |
| 2018 | 2 |
| 2017 | 3 |
| 2016 | 3 |