Kinematics Analysis of the Roller Screw Based on the Accuracy of Meshing Point Calculation

Liu, Yanqiang; Wang, Jianshen; Cheng, Hongxun; Sun, Yapeng

doi:10.1155/2015/303972

Cited by 22 publications

(24 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is only during the past decade that literature on the exploration of PRSMs has become available. The research focuses on geometry design, 99 kinematics, 100 load distribution, 101 load-carrying capacity, 102 and efficiency. 103 Jones and Velinsky 104,105 did fundamental research on the kinematics and dynamics of the standard PRSM through analytical methods, which allows for a better understanding of the mechanism.…”

Section: High-thrust Mechanical Transmissionmentioning

confidence: 99%

A review of electromechanical actuators for More/All Electric aircraft systems

Qiao

Liu

Shi

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

171

View full text Add to dashboard Cite

Conventional hydraulic actuators in aircraft systems are high maintenance and more vulnerable to high temperatures and pressures. This usually leads to high operating costs and low efficiency. With the rapid development of More/All Electric technology, power-by-wire actuators are being broadly employed to improve the maintainability, reliability, and manoeuvrability of future aircraft. This paper reviews the published application and development of the airborne linear electromechanical actuator. First, the general configuration, merits, and limitations of the gear-drive electromechanical actuator and the direct-drive electromechanical actuator are analysed. Second, the development state of the electromechanical actuator testing systems is elaborated in three aspects, namely the performance testing based on room temperature, testing in a thermal vacuum environment, and iron bird. Common problems and tendencies of the testing systems are summarized. Key technologies and research challenges are revealed in terms of fault-tolerant motor, high-thrust mechanical transmission, multidisciplinary modelling, thermal management, and thermal analysis. Finally, the trend for future electromechanical actuators in More/All Electric Aircraft applications is summarized, and future research on the airborne linear electromechanical actuators is discussed.

show abstract

Section: High-thrust Mechanical Transmissionmentioning

confidence: 99%

A review of electromechanical actuators for More/All Electric aircraft systems

Qiao

Liu

Shi

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

171

View full text Add to dashboard Cite

show abstract

“…In recent years, there are many researches on PRSM, which are primarily focused on load distribution [1][2][3], parameter matching [4], friction and wear behaviours [5], axial stiffness [6][7] and kinematic analysis [8][9][10]. Instead, only few publications on the dynamic characteristic of the PRSM are mentioned.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Model of Planetary Roller Screw Mechanism with Considering Torsional Degree of Freedom

Wan

et al. 2020

MATEC Web Conf.

View full text Add to dashboard Cite

To predict accurately the dynamics performance of planetary roller screw mechanism, it is necessary to establish its streamline and engineering-compliant dynamic model, which is the basis of mechanical design and precision control of the system. In this paper, the relative displacement between roller and ring gear along the line of action is deduced and the relationship between nature frequencies and the number of rollers is discussed. Considering the torsional stiffness of all components and the thread mesh stiffness based on the Hertzian contact theory, the purely torsional model for planetary roller screw mechanism is presented to reveal the natural frequencies and vibration mode characteristics of the system. The results show that the natural properties of undamped system in planetary roller screw mechanism are mainly reflected by two typical vibration modes: rotational mode and roller mode.

show abstract

“…Liu et al [24] calculated the contact positions at the screw-roller and nut-roller interfaces in the PRSM, in which the helical angles of the screw, nut and rollers were identical, and derived the transmission ratio of the PRSM.…”

Section: Introductionmentioning

confidence: 99%

Contact Analysis and Static Load Carrying Capacity of Planetary Roller Screw Mechanism

Kim¹,

K²,

Jong³

2020

Preprint

View full text Add to dashboard Cite

This paper aims to investigate the contact characteristics and static load carrying capacity of planetary roller screw mechanism (PRSM). Compared to the ball screw mechanism, the advantages of the PRSM are high stiffness, high load capacity, long travel life and compact structure, etc., since the PRSM possesses more contact points than ball screws in a comparable size. The actuated load is carried through the threaded surface contacts of the screw, the rollers and the nut and the contact characteristics of these components are very important for studying the wear, transmission accuracy and efficiency of a PRSM. Prior work has neglected to take a fundamental approach towards understanding the elastic-plastic contact characteristics of threaded surfaces under high loads and it is closely related to the static load carrying capacity of PRSM. Accordingly, in this paper, the contact characteristics of PRSM under the different working loads are modeled based on Hertz contact theory and the calculation formulas between normal force of thread turns and the elastic-plastic contact stress and deformation are derived. Then, it goes further to derive a calculation method of static load carrying capacity of PRSM based on simplified model of static load distribution. Finally, a verification model is developed by finite element method (FEM) to perform contact stress and strain analysis of PRSM. Besides, through the comparison of the results between the theory model and ANSYS Workbench finite element model verify the reliability of the theory.

show abstract

Kinematics Analysis of the Roller Screw Based on the Accuracy of Meshing Point Calculation

Cited by 22 publications

References 10 publications

A review of electromechanical actuators for More/All Electric aircraft systems

A review of electromechanical actuators for More/All Electric aircraft systems

Dynamic Model of Planetary Roller Screw Mechanism with Considering Torsional Degree of Freedom

Contact Analysis and Static Load Carrying Capacity of Planetary Roller Screw Mechanism

Contact Info

Product

Resources

About