公开(公告)号：US20180193942A1

公开(公告)日：2018-07-12

申请号：US15741793

申请日：2016-06-10

申请人： NTN CORPORATION

发明人： Hiromi NAGAI ,  Yasuhiko SAKAKIBARA

IPC分类号： B23K15/00 ,  B23K26/21 ,  B23K31/12 ,  F16D3/20 ,  G01N29/265 ,  G01N29/22

CPC分类号： G01N29/275 ,  B21K1/765 ,  B23K15/00 ,  B23K15/0006 ,  B23K15/0053 ,  B23K26/21 ,  B23K31/00 ,  B23K31/125 ,  F16D1/027 ,  F16D3/20 ,  F16D3/2055 ,  F16D3/227 ,  F16D2003/22326 ,  F16D2250/0076 ,  G01N29/043 ,  G01N29/221 ,  G01N29/265 ,  G01N29/28 ,  G01N2291/0234 ,  G01N2291/044 ,  G01N2291/2634 ,  G01N2291/2675

摘要： A manufacturing method is used for an outer joint member of a constant velocity universal joint. The outer joint member includes a cup section having track grooves formed in an inner periphery of the cup section, which are engageable with torque transmitting elements, and a shaft section formed at a bottom portion of the cup section. The outer joint member is constructed by forming the cup section and the shaft section as separate members, and by welding a cup member forming the cup section and a shaft member forming the shaft section to each other. The manufacturing method at least includes welding the cup member and the shaft member by irradiating a beam to joining end portions of the cup member and the shaft member, and inspecting a welded portion formed in the welding by a plurality of ultrasonic flaw detection methods with one probe.

公开(公告)号：US20170234836A1

公开(公告)日：2017-08-17

申请号：US15502872

申请日：2015-07-23

申请人： NTN CORPORATION

发明人： Hiromi NAGAI ,  Daisuke KAGAWA ,  Naoki NAKAGAWA ,  Takashi IMANAKA ,  Yasuhiko SAKAKIBARA ,  Tokio UEDA ,  Masazumi KOBAYASHI ,  Tatsuro SUGIYAMA

IPC分类号： G01N29/04 ,  G01N21/95

摘要： An inspection device inspects a joint-type outer joint member of a constant velocity universal joint that includes a cup section having a bottomed cylindrical shape and track grooves in an inner periphery thereof for torque transmitting elements, and a shaft section extending from a bottom of the cup section. The inspection device inspects the outer joint member, which is obtained through melt-welding on a cup member forming the cup section and a shaft member forming the shaft section. The inspection device includes a surface inspection unit to inspect for a defect which appears on a surface of the outer joint member due to welding, an internal inspection unit to inspect for an internal defect of a welded portion, and a recording unit to record an inspection result of the inspection. The inspection device is configured to efficiently perform in-line total inspection for the melt-welded joint-type outer joint member.