Search results for "Axial thrust"

showing 4 items of 4 documents

A new approach to the design of a speed-torque-controlled rubber V-belt variator

2005

This paper presents a new model for a torque-speed-sensing rubber V-belt variator. The actuators are of the centrifugal roller kind on the driver side and a helical torque cam plus a compression-torsion spring on the driven side. The equations permit designing the actuator geometry in order to keep the transmissible torque as close as possible to the torque request in the whole operative field. Moreover, a procedure is suggested for the most proper design of an automatic variator of this kind. It permits choosing the required variogram of the transmission, i.e. the matching between the engine and the transmission, and designing the actuators: roller mass, housing shape, contact plate angle…

EngineeringTest benchVariatorAutomatic transmissionbusiness.industryMechanical EngineeringAerospace EngineeringTorsion (mechanics)Mechanical engineeringThrustComputer Science::Otherlaw.inventionComputer Science::Roboticslawcontinuously variable transmission rubber V-belt automatic transmission axial thrusts regulation.TorqueActuatorbusinessSimulationContinuously variable transmissionProceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
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A Simple Model for the Axial Thrust in V-Belt Drives

1996

Simple formulas can relate axial thrust and torque of rubber V-belt drives, taking into consideration the radial penetration of the belt.

Engineeringbusiness.industryMechanical EngineeringNumerical analysisAxial thrustThrustMechanicsMechanical driveBelt driveComputer Graphics and Computer-Aided DesignComputer Science ApplicationsNatural rubberMechanics of MaterialsSimple (abstract algebra)visual_artForensic engineeringvisual_art.visual_art_mediumTorquebusinessJournal of Mechanical Design
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V-Belt Winding along Archimedean Spirals During the Variator Speed Ratio Shift

2010

Starting from a previous model for the shift mechanics of rubber belt variators, this lecture elaborates practical design formulas for the torque and the axial thrust making use of the very close resemblance of the belt path to a linear spiral of Archimedes along a large part of the arc of contact. In addition, as an alternative to the modern calculus tools, it is shown how the drive variables can be equally calculated applying some propositions of Archimedes’ classical treatise πeρί ‘eλίκων (On Spirals).

Path (topology)Arc (geometry)symbols.namesakeVariatorAxial thrustArchimedean spiralsymbolsTorqueGeometryGear ratioStoria della meccanica V-belt spirale di ArchimedeContinuously variable transmissionMathematics
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Helical Shift Mechanics of Rubber V-Belt Variators

2011

A very common configuration of V-belt variators for motorcycles considers the correction of the belt tensioning depending on the resistant torque by means of suitable helical-shaped tracks allowing the driven half-pulleys to close/open. The theoretical model for belt-pulley coupling is rather complex for this configuration, where one half-pulley may run in advance and the other one behind with respect to the belt, and requires the repeated numerical solution of a strongly nonlinear differential system by a sort of shooting technique, until all the operating conditions are fulfilled (angular contact extent, torque, and axial force). After solving the full equations, the present study develop…

business.product_categoryNumerical solutionThrustResistant torqueStrongly nonlinearPulleyAxial thrustNatural rubberTorqueBoundary value problemAxial forceTheoretical modelTension levelCouplingPhysicsOperating conditionTension (physics)Mechanical EngineeringMechanicsComputer Graphics and Computer-Aided DesignSettore ING-IND/13 - Meccanica Applicata Alle MacchineComputer Science ApplicationsClosed form approximationVariatorsClosure (computer programming)Mechanics of Materialsvisual_artShooting techniquevisual_art.visual_art_mediumAstrophysics::Earth and Planetary Astrophysicsbusiness
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