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    Analysis of Elliptical Rolling Contact Joints in Compression

    Source: Journal of Mechanical Design:;2011:;volume( 133 ):;issue: 003::page 31001
    Author:
    Jacob R. Montierth
    ,
    Robert H. Todd
    ,
    Larry L. Howell
    DOI: 10.1115/1.4003499
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper presents elliptical rolling contact joints in compression as an alternative to circular rolling contact and conventional revolute joints where high quality force transmission—low friction and backlash—with variable output are desired. Parameters specific to the joint and its position are defined in terms of relative link angles and elliptical surface geometry. These relationships allow elliptical rolling contact joints to be incorporated in vector loop summations used in kinematic analysis. Notably, elliptical rolling contact is developed as the more general case of which circular rolling contact is a subset. Elliptical rolling contact joints are shown to offer several benefits over circular rolling contact, including reduced Hertz contact stresses, variable output velocity, maximum use of contact interface by distributing small rotations across surfaces of small curvature, reduced forces on constraining members, and no-slip pure rolling provided by either connecting links or flexures, without the need for gear teeth or friction.
    keyword(s): Motion , Rolling (Metalworking) , Stress , Rolling contact , Force , Compression , Stress AND Friction ,
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      Analysis of Elliptical Rolling Contact Joints in Compression

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    http://yetl.yabesh.ir/yetl1/handle/yetl/147083
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    contributor authorJacob R. Montierth
    contributor authorRobert H. Todd
    contributor authorLarry L. Howell
    date accessioned2017-05-09T00:45:53Z
    date available2017-05-09T00:45:53Z
    date copyrightMarch, 2011
    date issued2011
    identifier issn1050-0472
    identifier otherJMDEDB-27942#031001_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/147083
    description abstractThis paper presents elliptical rolling contact joints in compression as an alternative to circular rolling contact and conventional revolute joints where high quality force transmission—low friction and backlash—with variable output are desired. Parameters specific to the joint and its position are defined in terms of relative link angles and elliptical surface geometry. These relationships allow elliptical rolling contact joints to be incorporated in vector loop summations used in kinematic analysis. Notably, elliptical rolling contact is developed as the more general case of which circular rolling contact is a subset. Elliptical rolling contact joints are shown to offer several benefits over circular rolling contact, including reduced Hertz contact stresses, variable output velocity, maximum use of contact interface by distributing small rotations across surfaces of small curvature, reduced forces on constraining members, and no-slip pure rolling provided by either connecting links or flexures, without the need for gear teeth or friction.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleAnalysis of Elliptical Rolling Contact Joints in Compression
    typeJournal Paper
    journal volume133
    journal issue3
    journal titleJournal of Mechanical Design
    identifier doi10.1115/1.4003499
    journal fristpage31001
    identifier eissn1528-9001
    keywordsMotion
    keywordsRolling (Metalworking)
    keywordsStress
    keywordsRolling contact
    keywordsForce
    keywordsCompression
    keywordsStress AND Friction
    treeJournal of Mechanical Design:;2011:;volume( 133 ):;issue: 003
    contenttypeFulltext
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