Friction Torque Analysis and Verification of Planetary Thread Roller Bearing

Liu, Lu; Zhang, Congcong; Guo, Yanqing; Bian, Yuxiang; Fu, Yongling; Yang, Ning; Zhou, Junhu

doi:10.3390/act11080238

Cited by 3 publications

(2 citation statements)

References 24 publications

(31 reference statements)

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“…The analysis of friction torque [98] is pivotal in understanding the operational efficiency of mechanical systems. Gan et al [99] and Liu et al [100] have made significant contributions in this area by analyzing the frictional moments in PRSMs and PTRBs, respectively. Gan et al utilized Hertzian contact theory to dissect the frictional moment caused by elastic hysteresis, roller's spinning…”

Section: Friction Torque Power Loss and Transmission Efficiencymentioning

confidence: 99%

Performance and Challenges of Planetary Roller Screw Mechanism in Complex Conditions: A Comprehensive Review of Recent Progress

Miao,

Tang,

et al. 2024

Preprint

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The Planetary Roller Screw Mechanisms (PRSMs), alongside Ball Screw Mechanisms (BSMs) and Electromechanical Actuators (EMAs), occupies a pivotal role in advancing the precision and efficiency of various industrial applications, including aerospace, automotive, and high-precision machining tools. Despite their critical advantages such as high load capacity, superior precision, and extended lifespan, the deployment of PRSMs in complex operational conditions reveals a landscape rife with challenges and opportunities for further research. This comprehensive review endeavors to dissect the multifaceted aspects of PRSMs, focusing on their mechanics and dynamics, tribology and thermal behavior, and the paramount importance of reliability and condition monitoring. By synthesizing current research findings, this paper highlights the significant advancements in understanding the static and dynamic characteristics of PRSMs, the intricate interplay between lubrication conditions and wear mechanisms, and the critical role of thermal effects on operational performance. Moreover, it delves into the dynamic models that address the impact of manufacturing imperfections, such as waviness and defects, on the reliability of these mechanisms. Despite the strides made, the review identifies critical gaps in the existing literature, particularly under conditions of extreme temperatures, large deformations, and multifaceted loads, advocating for a holistic approach to research. By proposing integrated thermo-mechanical models and emphasizing the need for empirical validations, this paper outlines a roadmap for future studies aimed at facilitating the development of more robust and reliable PRSMs, capable of meeting the demands of complex operational scenarios and advancing the field of high-precision applications in aerospace, robotics, and beyond.

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Section: Friction Torque Power Loss and Transmission Efficiencymentioning

confidence: 99%

Performance and Challenges of Planetary Roller Screw Mechanism in Complex Conditions: A Comprehensive Review of Recent Progress

Miao,

Tang,

et al. 2024

Preprint

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“…According to bearing characteristics, the dynamic friction torque is dependent on the rotational speed. [19][20][21] Thus, it is necessary to test the dynamic friction torque at different speeds for friction compensation.…”

Section: Testing Condition Deviationmentioning

confidence: 99%

Accuracy characteristics of the testing bench for dynamic transmission error

Shi,

Yu,

Cheng

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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A high-precision testing bench is required for accurately assessing the dynamic Transmission error (TE) of precision reducers. However, the relationship between the testing bench’s accuracy and deviations in testing conditions has not been determined, leading to an inaccurate evaluation of its metrological performance. In this study, we examined the accuracy characteristics of the testing bench. We analyzed the structure of the bench and identified the main error sources that affect its accuracy, including mechanical system deviation, sensor measurement deviation, and testing condition deviation. In addition, we studied the mechanism of these error sources and proposed a method to convert drive speed deviation and load torque deviation into angle deviation by using a three-dimensional characterization model of lost motion. Based on the expression of TE, we proposed an evaluation method for the accuracy of the testing bench. Furthermore, we presented the methods for calculating the error sources and proposed a method for determining the TE of adjacent units based on the specific coupling structure. Finally, we conducted practical tests to validate the effectiveness of the proposed method in evaluating the accuracy characteristics of the testing bench. We found that the relative test error between quasi-static TE and dynamic TE is small, and more accurate test results are obtained when applying an appropriate load.

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Morphological Construction of Transmission Error of Precision Reducer Based on BP Neural Network

Shi

Yue

et al. 2022

2022 5th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM)

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Friction Torque Analysis and Verification of Planetary Thread Roller Bearing

Cited by 3 publications

References 24 publications

Performance and Challenges of Planetary Roller Screw Mechanism in Complex Conditions: A Comprehensive Review of Recent Progress

Performance and Challenges of Planetary Roller Screw Mechanism in Complex Conditions: A Comprehensive Review of Recent Progress

Accuracy characteristics of the testing bench for dynamic transmission error

Morphological Construction of Transmission Error of Precision Reducer Based on BP Neural Network

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