Efficiency and wear in cam actuated robotized gearbox using virtual model

Pennestrı̀, Ettore; Stefanelli, R.; Valentini, P; Vita, L.

doi:10.1504/ijvd.2008.019091

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Researchers have extensively studied the contact fatigue behavior of cams with respect to cam load, lubrication conditions, surface roughness, and temperature within the friction zone [2][3][4]. For instance, Openness et al performed a comparative analysis of contact load and wear conditions across different cams using kinetic modeling [2]. Soejima examined the impact of lubricant viscosity, additives, and temperature in the friction zone on cam-attachment wear behavior [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

Su,

Wang,

Deng

et al. 2024

Mater. Res. Express

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This study introduces a methodology that incorporates gradient structural features and crystal plasticity for assessing contact fatigue in engine valve cams. It explored the influence of grain characteristics and structural gradients on fatigue failure through the lens of Plastic Strain Energy Density (PSED). Findings indicate that variability in crystal orientation significantly impacts PSED and subsequent crack initiation. Additionally, shot peening induces a gradient in grain size, promoting orderly deformation, stress alleviation, and improved fatigue resistance. The study suggests that an optimal fatigue resistance in cam contacts is achievable with a gradient layer comprising 75% volume fraction, which strikes a balance between cost and technical feasibility.

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Section: Introductionmentioning

confidence: 99%

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

Su,

Wang,

Deng

et al. 2024

Mater. Res. Express

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“…However, the presence of clearances cannot be avoided in actual manufacturing and is a cause of impact forces. There is a broad class of machines, such as robotized gear selectors [1], vibrating conveyers, vibratory diggers, centrifugal vibration absorbers (CPVA) [2][3][4][5][6], etc., where a reliable analysis requires an approach to kinematic pairs modeling consistent with the presence of clearances and elastic couplings between bodies. The clearance allows a tiny vibration displacement governed by the geometry and compliance of both kinematic elements' surface boundaries.…”

Section: Introductionmentioning

confidence: 99%

Review with Analytical-Numerical Comparison of Contact Force Models for Slotted Joints in Machines

et al. 2022

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The pin-in-the-slot joint is a common element in machines, and the dynamics of joints with clearances is an actively investigated topic. Important applications of such a joint can be found in Geneva mechanisms, robotized gear selectors, centrifugal vibration absorbers (CPVA) and other important mechanical devices. The paper will review the main analytical steps required to obtain the equations characterizing the different force contact models. Furthermore, a numerical test bench where such models are introduced for modeling the clearances between the pin and slot is proposed. In this regard, the present study will offer a comparison and discussion of the numerical results obtained with the different force contact models herein reviewed.

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Study of Factor Causing Wear of a Barrel Cam in a Paper-Cup-Forming Machine by Using Multibody Dynamics Model

Jun¹,

Park

Cheong³

et al. 2010

Transactions of the Korean Society of Mechanical Engineers A

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서 론자동화Abstract: The barrel cam, which is a type of cylindrical cam, has been widely used as a part of index drive units for automatic manufacturing machines. The axis of rotation of the barrel cam is orthogonal to the axis of rotation of the follower. The index drive rotates or dwellsdepending on the cam profile, while the cam rotates with a constant velocity. Continuous sliding contact between the barrel cam and the follower surfaces causes wearing of the adhesive between them. This study shows that the contact force between two sliding bodies is responsible for the wear of the barrel cam in the paper-cup-forming machine. This contact force is calculated by using the multibody dynamics model of the paper-cup-forming machine. The analytical result is validated by comparing it to the actual wear spots on the real product. † Corresponding Author, park@ajou.ac.kr

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Efficiency and wear in cam actuated robotized gearbox using virtual model

Cited by 3 publications

References 5 publications

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

Effect of microstructural features on the fatigue behavior of the valve mechanism cam rolling contact

Review with Analytical-Numerical Comparison of Contact Force Models for Slotted Joints in Machines

Study of Factor Causing Wear of a Barrel Cam in a Paper-Cup-Forming Machine by Using Multibody Dynamics Model

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