Reliability research of eccentric freewheel mechanisms of friction type

Sharkov, O. V.; Koryagin, S. I.; Великанов, Н. Л.

doi:10.1051/matecconf/201822402089

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References 17 publications

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“…The number of turn-on cycles m N ( Table 1) corresponding to the lower bound of confidence interval of time between failures was accepted according to the results of experimental studies [21].…”

Section: Fig 2 Kinematic Scheme Of the Pulsed Variable-speed Drivementioning

confidence: 99%

Research of working capacity of pulsed variable-speed drives

2019

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The paper presents the results of experimental researches of the basic working capacity characteristics of pulsed variable-speed drivesgear ratio, efficiency factor, and reliability of the eccentric free-wheel mechanisms When conducting research, the main working capacity parameters of the pulsed variable-speed drive (independent factors) changed according to the design of experiment in the range: the load applied to the output shaft was from 250 to 2.750 N·m; adjustable gear ratiofrom 20 to 180. It was established that the reliability of the eccentric free-wheel mechanisms is guaranteed when making mechanisms of 100Cr6 steel with hardness not lower than HRC Э 58…62 with a module of at least 0.75 mm. It was shown that the yield surface, which characterizes the change in the gear ratio of the pulsed variablespeed drive, can be described by a model using first-order polynomials. It was established that with increasing load, a slight increase (at 1.0...9.9%) occurs in the adjusted gear ratio, which has a character close to linear. It was concluded that with an increase in load, the increase in efficiency factor is non-linear and equals 1.8...2.6 times, an increase in the gear ratio causes its linear decrease by 1.13...1.64 times in the dependence close to a linear one. Empirical dependences are obtained to determine the magnitude of the gear ratio and efficiency factor.

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Section: Fig 2 Kinematic Scheme Of the Pulsed Variable-speed Drivementioning

confidence: 99%