Mechanical model of coupling rolling and sliding friction in real-time non-clearance precision ball transmission

Duan, Liying; An, Zhiyong; Yang, Ronggang; Fu, Zhiqiang

doi:10.1016/j.triboint.2016.06.032

Cited by 21 publications

(8 citation statements)

References 7 publications

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“…The studied friction couples have been formed from a cylindrical part which had its outer surface machined by means of cold superficial plastic deformation processes or by cutting and a machine shoe with its inner cylindrical surface machined by rectification [3]. Between friction couple's elements there is a relative motion obtained when the part revolves as the machine shoe stays fixed.…”

Section: Investigation Technique and Instrumentsmentioning

confidence: 99%

Considerations about the influence of lubricant in different machining mechanical processes

et al. 2017

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Abstract. There are numerous researches that highlight the fact that wear related processes of machine components are one of the main causes which leads to their destruction. The main reasons for wear are related to the initial state of contact surfaces described by mechanical and physical properties of their superficial layer. Thus friction surface's state depends on previous mechanical machining done on this surface especially the last one. This study presents a method which proposes and creates premises for a microgeometry favorable to maintaining the lubricant on part surfaces for as long as possible dependent on different machining processes. Comparisons are made between values specific to the wear state of the considered part obtained by various machining by measuring material mass removed during functioning in similar working conditions.

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Section: Investigation Technique and Instrumentsmentioning

confidence: 99%

Considerations about the influence of lubricant in different machining mechanical processes

et al. 2017

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“…Moreover, in recent years, the cycloidal ball MTD also shows excellent prospects and has attracted much insights from scholars. [48][49][50][51] Sun et al 50 analysed the non-Hertz contact stress and bearing capacity of the meshing pair of a noclearance precision ball reducer in real-time.…”

Section: Introductionmentioning

confidence: 99%

A design method for a novel movable tooth drive with logarithmic spiral conjugated tooth profiles

Zhou

Yang

Ran

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper presents a method for designing a novel type of movable tooth drive characterized by logarithmic spiral conjugated tooth profiles, which are in almost full surface contact owing to such innovative tooth geometry, in comparison with the conventional involute or cycloidal tooth profiles creating a linear contact. Firstly, the existence conditions of the conjugated curve of the logarithmic spiral are researched by establishing the meshing equation, and its geometric and kinematic properties are identified to design the conjugated tooth profiles of the movable tooth and ring gear. Then, wave generator profile, according to the requirement that it should be completely convex and smooth, is designed and modified to ensure the consistency with load capacity of the conjugated tooth profiles. On this basis, dimensional synthesis of the mechanism is performed following the influence analysis of main factors on the force/motion transmission characteristic of the whole machine. Finally, the virtual prototype is developed and the proposed design method is validated by relevant force performance simulation. The outcomes lay a significant foundation for the design of such logarithmic spiral tooth profile transmission.

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“…This research indicates the complexity of the friction phenomenon and the need to manage friction in an industrial environment. Duan et al [21] established a new static mechanical model to study the rolling-sliding contact in the real-time non-clearance precision ball drive, using the coupling coefficient determined by the Carter narrow theory. The diagrams of mechanical and geometric parameters simulated by the finite element method indicate that the trend of change in normal load has the shape of a sine function.…”

Section: Introductionmentioning

confidence: 99%

“…The diagrams of mechanical and geometric parameters simulated by the finite element method indicate that the trend of change in normal load has the shape of a sine function. It should be noted that the value of the friction coefficient in [21] is taken as a constant computer-simulated value. At the same time, in this paper, the normal load of a bearing, achieved by a rotating mass, is an actual constant value, which could not be said for the kinetic coefficient of friction.…”

Section: Introductionmentioning

confidence: 99%

Relation between Kinetic Friction Coefficient and Angular Acceleration during Motion Initiated by Dynamic Impact Force

2022

Teh. vjesn.

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The paper presents theoretical and experimental analyses of the kinetic friction coefficient of a ball bearing in conditions of rotational motion initiated by dynamic impact force. A method has been developed and a measurement system allows the measurement of a kinetic coefficient of friction through the measurement of the angular acceleration. This paper considers the friction caused by rotational motion initiated by the force impact impulse. After the external force (impact impulse) stops acting, the motion continues, and the loaded bearing (i.e. the zone of the bearing in which the frictional resistance forces act) exhibits a broad spectrum of velocities, from the maximum value at the moment of motion initiation to the zero value when motion stops, where the whole measuring system acts as a rotary encoder. Experimental results indicate a high dependency between angular velocity and friction coefficient, similar to functional dependency. This paper proves that kinetic friction coefficient can be reliably measured using the measurements of angle change and angular velocity. Analysed method has high potential in the diagnostics of energy loss in the tribo-mechanical systems.

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Mechanical model of coupling rolling and sliding friction in real-time non-clearance precision ball transmission

Cited by 21 publications

References 7 publications

Considerations about the influence of lubricant in different machining mechanical processes

Considerations about the influence of lubricant in different machining mechanical processes

A design method for a novel movable tooth drive with logarithmic spiral conjugated tooth profiles

Relation between Kinetic Friction Coefficient and Angular Acceleration during Motion Initiated by Dynamic Impact Force

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