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1.发明申请公开(公告)号：US20170120369A1
公开(公告)日：2017-05-04
申请号：US15319097
申请日：2015-05-20
申请人： NTN CORPORATION
发明人： Naoki NAKAGAWA , Shintaro SUZUKI , Kenichi NAKANO , Takuya FUJITA , Kiyohiro SUZUKI , Renji NATSUME , Tatsuro SUGIYAMA , Masazumi KOBAYASHI
CPC分类号： B23K15/0046 , B23K15/04 , B23K26/0823 , B23K26/21 , B23K26/282 , B23K33/006 , B23K2101/04 , B23K2103/04 , B23K2103/18 , F16D1/027 , F16D3/205 , F16D3/2055 , F16D3/223 , F16D3/227 , F16D2003/22326 , G01N29/043 , G01N29/225 , G01N29/28 , G01N2291/267
摘要： For butt-welding, which includes bringing joining end surfaces of a cup member and a shaft member into abutment against each other and radiating a high energy intensity beam from a radially outer side, the shaft member has a recess on a radially inner side of the joining end surface to obtain a welded portion having a closed hollow cavity on a radially inner side after butt-welding. The joining end surface (protruding surface) of the cup member protrudes toward a radially inner side with respect to an inner diameter of the joining end surface of the shaft member. With this, a welded portion of an outer joint member of a constant velocity universal joint, which is manufactured by joining the cup member and the shaft member, can be improved in strength and quality.
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2.发明申请公开(公告)号：US20170130780A1
公开(公告)日：2017-05-11
申请号：US15319619
申请日：2015-05-20
申请人： NTN CORPORATION
发明人： Takeshi SHIMASAWA , Naoki NAKAGAWA , Tsuneaki HIRAOKA , Shintaro SUZUKI , Tatsuro SUGIYAMA , Masazumi KOBAYASHI
摘要： A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed by forging, and a joining end surface formed on an outer surface of the bottom portion, and preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member. The method also includes bringing the joining end surfaces of the cup and shaft members into abutment against each other, and welding the cup and shaft members from an outer side of the cup member to an abutment portion between the cup and shaft members in a radial direction of the cup members.
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3.发明申请公开(公告)号：US20170159719A1
公开(公告)日：2017-06-08
申请号：US15319613
申请日：2015-05-20
申请人： NTN Corporation
发明人： Daisuke KAGAWA , Tsuneaki HIRAOKA , Shintaro SUZUKI , Naoki NAKAGAWA , Tatsuro SUGIYAMA , Masazumi KOBAYASHI
CPC分类号： F16D3/223 , B23K15/0006 , B23K15/002 , B23K15/0033 , B23K15/0053 , B23K15/04 , B23K15/06 , B23K26/0823 , B23K26/242 , B23K26/282 , B23K26/32 , B23K2101/04 , B23K2103/04 , B23K2103/18 , C21D9/50 , C21D2211/003 , C21D2211/005 , F16D1/027 , F16D1/068 , F16D3/205 , F16D3/2055 , F16D3/227 , F16D2003/22326 , F16D2250/0076 , Y10S464/906
摘要： In an outer joint member of a constant velocity universal joint, a cup member and a shaft member are made of medium to high carbon steel and welded together. The cup member has a bottomed cylindrical shape that is opened at one end, and includes a cylindrical portion, a bottom portion, and a short shaft section of a solid shaft shape protruding from the bottom portion and having a joining end surface. The shaft member has a solid shaft shape and a joining end surface. The joining end surfaces of the cup and shaft members are brought into abutment against each other, and a high energy intensity beam is radiated from an outer side in a radial direction to form a welded portion. A structure of a molten metal at the welded portion is in a mixed phase of ferrite and granular cementite.
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4.发明申请公开(公告)号：US20170120368A1
公开(公告)日：2017-05-04
申请号：US15319086
申请日：2015-05-20
申请人： NTN CORPORATION
发明人： Naoki NAKAGAWA , Shintaro SUZUKI
CPC分类号： B23K15/0006 , B23K15/00 , B23K15/0033 , B23K15/08 , C21D9/0068 , F16D3/20 , F16D3/202 , F16D3/2055 , F16D3/227 , F16D3/24
摘要： A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members of medium carbon steel, the cup member being manufactured by preparing a cup member having cylindrical and bottom portions being integrally formed, and a fitting hole formed in a thick portion of the bottom portion, the shaft member being manufactured by preparing a shaft member having a fitting outer surface formed at an end portion of the shaft member to be joined to the bottom portion of the cup member, and fitting the fitting hole of the cup member to the fitting outer surface of the shaft member. The method also includes welding the cup and shaft members from an inner side of the cup member to a fitted portion between the cup and shaft members.
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5.发明申请公开(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
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.
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