Vol. 48 No. 12Jun. 2020MACHINE TOOL & HYDRAULICS
国家安全委员会成员Hydromechatronics Engineering MACHINE TOOL & HYDRAULICS Hydromechatronics Engineering http ：//jdy. qks. cqut. edu. cn E-mail ： jdygcyw@ 126. com
Citation franai ： Xiao-yai CHEN , En ZHU , Zhao-yan YANG , et at. Fabyue bfe spedmeud and failure analysis of Uexible bear ings Pr harmonic geos wduceipj]. Machine Tool & HyUwuXcs ,2222,43( 12) ：94 -96.
Faticue iife exoerimente und failure untlysic of flexiCle beurings foe iurmonic geuc rodecon
Xiao-xang CHEN 1 , En ZHU 1*
* , Zhao-xan YANG 1 , Haixhao KANG 2Received date: 2222 -21 - 19
* Crrresponding aUhrr ： En ZHU, Postgmduate. E-mail ：756313467@ qq. com (‘ScOocO of MecOatroaic Engineering and Automation , Shangnni Univershu, Shangnni 200444, Chinn)
(2Beping CTKM Harmoaie Drive Co., Lt/., Beijing 101313, Chinn)
量化分析
Abstract : Flexible bea/ng is an impodant part of a harmouic gear whucer. In order to study the failure chamcter- istics of Uexible Ua/ngs : a special testing machine peUorming fahgue OP experiments Pr Uexible bea/ngs was dse/peU. The loading device of this testing machine can rotate with the inner ring of the Uexible bea/ng and ap ply loads at both ends of the major axis of the oxter dny syuchwnonsly. Several failure phenomena of Uexible bea/ngs were obsewed Uy the fatigue bfe experiments with Pnr sets of Uexible bea/ngs. The width , depth and suUace roughness of the raceways were measured after the experiments. The expe/mental results showed that wear and fahgue spal/ny behavior aupeawd ouly at the end of the major axis of the inner dnys : and fatigue fracture and spalbny might occor ou the oxter rings . Moreover, C was Ppnd that the wear of the raceways was no- uniPiui.Key words ： Flexible bea/ng , Failure chawctedsUcs : Fabyue bfe e xperiments doi ：12.3969/j. issn. 1021-3831.2222.12.213 Drcumeei code : A CLC number : TH135.3
som
1
The harmouic gear wPucer is composed of three main compouents : a circolor sphne - CS) , a hexspOne
多能干细胞
(FS) and a wave generator 0 WG) . The stmeture of a
harmouic year wducer is shown in Fig. 1. The WG
cousists of a Uexible bea/ng and an eOipUcol cam.
When the harmouic wPucer words , the inner dny of
the Uexible bearing is assembled with the cam. Thew-电子杂志软件>注意力测试
Pw , the rings of the Uexible bea/ng will ppducc
ywot deformatiou , which is diPewnt Vom an ordinap
bea/ny [ 1X ].
The FS ppduces elastic deformatiou when the WG rotates in the FS. The teeth of the FS and CS circolate
Pnr states : u eoyaying in , enyv/ment, eoyaying ont
anh disenaaemen-”. It is called stagyewd movement.
The schematic diagram of stagyewd movement is shown in Fig. 2. It can couved high-speed input wto- tiou to low-speed ontput wtatiou. The wtatioual diwc-
tiou of the inner ring and the oxter ring is opposite [4].
Fig. 2 SOecture oe a harmonic gear reducer Many experts and scholars have made a large o- monnt of research adopt Uexible bea/ngs. Ostapshi [5 ] estVOshed a mathemahcgl model of Uexible beor- ings and introduced a failure mode of Uexible beor-
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