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公开(公告)号：US20180259003A1
公开(公告)日：2018-09-13
申请号：US15761228
申请日：2016-09-01
申请人： NTN CORPORATION
发明人： Hiromi NAGAI , Tsuneaki HIRAOKA
IPC分类号： F16D3/2233 , B23K15/00 , B21K1/76 , G01N29/27 , G01N29/04
CPC分类号： G01N29/221 , B21K1/765 , B23K15/0006 , B23K15/0053 , B23K31/125 , B23P2700/11 , F16D1/027 , F16D3/2055 , F16D3/2233 , F16D3/227 , F16D2003/22326 , G01N29/043 , G01N29/2456 , G01N29/26 , G01N29/27 , G01N29/275 , 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 its inner periphery, which are engageable with torque transmitting elements, and a shaft section formed at a bottom portion of the cup section. The manufacturing method includes welding the cup and shaft members by irradiating a beam to joining end portions of the cup and shaft members, causing an outer surface including the welded portion to be formed into a flat smooth surface by removal processing, irradiating ultrasonic waves to the flat smooth surface with one probe at an incident angle which prevents total reflection in a circumferential angle beam flaw detection method, and setting a focal point of the ultrasonic waves to positions from a surface to an inside of the welded portion, to thereby perform inspection.
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公开(公告)号：US20190241986A1
公开(公告)日：2019-08-08
申请号：US16312368
申请日：2017-05-26
申请人： NTN CORPORATION
发明人： Tsuneaki HIRAOKA , Shintaro SUZUKI , Yuuki TABUCHI
CPC分类号： C21D1/10 , C21D9/28 , C21D9/36 , F16C33/34 , Y02P10/253
摘要： When a rod-shaped workpiece (W) having an outer peripheral surface with a circular cross section is inductively heated to a quenching temperature while being conveyed at a predetermined velocity along an axial direction of the rod-shaped workpiece (W), the rod-shaped workpiece (W) being currently conveyed is heated to a predetermined temperature equal to or lower than the quenching temperature by a first heating coil (2A), which is electrically connected to a first high-frequency power supply (3) and has a constant output. Then, the rod-shaped workpiece (W) being currently conveyed is heated so as to be maintained at the quenching temperature by a second heating coil (2B), which is electrically connected to a second high-frequency power supply (4) and has a constant output.
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3.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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4.发明申请公开(公告)号：US20170130779A1
公开(公告)日：2017-05-11
申请号：US15318786
申请日：2015-05-20
申请人： NTN CORPORATION
CPC分类号： F16D3/223 , B23K15/00 , B23K15/0006 , F16D1/068 , F16D3/20 , F16D3/205 , F16D2003/22326 , F16D2250/0076
摘要： A method of manufacturing an outer joint member of a constant velocity universal joint includes forming cup and shaft members using medium carbon steel, preparing, as the cup member, a cup member having cylindrical and bottom portions integrally formed, and a joining end surface formed on an outer surface of the bottom portion, preparing, as the shaft member, a shaft member having a joining end surface to be joined to the bottom portion of the cup member, and bringing the joining end surfaces of the cup and shaft members into abutment against each other. The method also includes 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 member under a state in which a hollow cavity portion is formed inside the abutment portion.
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公开(公告)号：US20160298693A1
公开(公告)日：2016-10-13
申请号：US14777881
申请日：2014-03-12
申请人： NTN CORPORATION
IPC分类号： F16D1/06 , B21K1/06 , F16D3/2245 , F16C3/02 , F16D1/10
CPC分类号： F16D1/06 , B21K1/066 , F16C3/02 , F16D1/072 , F16D1/10 , F16D3/223 , F16D3/2245 , F16D2001/103 , F16D2003/22313
摘要： A power transmission shaft including a male spline formed in an outer periphery thereof, and a diameter increasing portion formed on a part of a tooth bottom of the male spline, which is located on an opposite side to an axial end of the power transmission shaft. The tooth bottom of the male spline has a substantially constant circumferential width extending up to an axial region of the diameter increasing portion. The diameter increasing portion includes a chamfered portion formed in the axial region of the diameter increasing portion, the chamfered portion connecting the tooth bottom and a tooth flank of the male spline to each other to reduce a tooth groove width.
摘要翻译： 一种动力传递轴，其包括形成在其外周的外花键和形成在所述雄花键的齿底部的与所述动力传递轴的轴向端相反的一侧上的直径增大部。 阳花键的齿底具有延伸到直径增加部分的轴向区域的基本恒定的周向宽度。 直径增加部分包括形成在直径增加部分的轴向区域中的倒角部分，倒角部分将齿底部的齿底与齿槽的齿面彼此连接以减小齿槽宽度。
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公开(公告)号：US20190233911A1
公开(公告)日：2019-08-01
申请号：US16312388
申请日：2017-05-26
申请人： NTN CORPORATION
发明人： Tsuneaki HIRAOKA , Yuuki TABUCHI , Shintaro SUZUKI
CPC分类号： C21D9/0062 , C21D1/10 , C21D1/42 , C21D9/00 , C21D9/36 , H05B6/06 , H05B6/36 , Y02P10/253
摘要： Provided is a heat treatment apparatus (1), including: a conveying device (10), which is configured to convey a rod-shaped workpiece (W) at a predetermined velocity along an axial direction of the workpiece (W); and a heating device (2) including a heating coil (3) configured to inductively heat the workpiece (W) being conveyed to a quenching temperature, wherein the heating coil (3) includes a first heating section (3A) and a second heating section (3B), which are coupled to each other in series along the axial direction of the workpiece (W), and is electrically connected to a single high-frequency power supply (4), and wherein a coil pitch (D2) of the second heating section (3B) arranged relatively on a front side in a conveying direction for the workpiece (W) is larger than a coil pitch (D1) of the first heating section (3A) arranged relatively on a rear side in the conveying direction.
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7.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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公开(公告)号：US20160230244A1
公开(公告)日：2016-08-11
申请号：US15022650
申请日：2014-09-08
发明人： Eri HIRAYAMA , Tsuneaki HIRAOKA , Shintaro SUZUKI
CPC分类号： C21D9/40 , C21D1/10 , C21D1/42 , C21D1/58 , F16C33/64 , F16C2204/66 , F16C2223/18 , H05B6/06 , H05B6/103 , H05B6/44 , Y02P10/253
摘要： When a plurality of outer rings (R) are sequentially and inductively heated to a target temperature by energizing a heating coil (2) elongated more than each of the plurality of outer rings (R), which are made of steel and retained coaxially by a retaining unit (3), while relatively moving the outer rings (R) and the heating coil (2) in an axial direction, an output of the heating coil (2) is varied in consideration of the number of outer rings (R) present in an opposing region of the heating coil (2).
摘要翻译： 当多个外圈（R）被顺序地感应加热到目标温度时，通过对由多个外圈（R）构成的多个外圈（R）拉长的加热线圈（2）进行激励，所述加热线圈（2）由钢制成并同轴地保持 保持单元（3）在使外圈（R）和加热线圈（2）沿轴向相对移动的同时，考虑到存在的外圈（R）的数量来改变加热线圈（2）的输出 在加热线圈（2）的相对区域中。
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9.发明申请HEAT TREATMENT METHOD FOR RING-SHAPED MEMBER AND HEAT TREATMENT EQUIPMENT FOR RING-SHAPED MEMBER 审中-公开环形构件的热处理方法和环形构件的热处理装置公开(公告)号：US20160230243A1
公开(公告)日：2016-08-11
申请号：US15022315
申请日：2014-09-08
申请人： NTN CORPORATION
发明人： Tsuneaki HIRAOKA , Eri HIRAYAMA , Shintaro SUZUKI
CPC分类号： C21D9/40 , C21D1/10 , C21D1/42 , C21D1/58 , C21D9/0018 , C21D9/0056 , F16C33/56 , F16C33/62 , F16C33/64 , F16C2204/66 , H05B6/06 , H05B6/103 , H05B6/44 , Y02P10/253
摘要： In a heating step (S1) of inductively heating a steel outer ring (OR) to a target temperature, a plurality of outer rings (OR) retained coaxially by a retaining unit (3) are caused to sequentially pass through an opposing region of a pre-heating coil (22) having a variable output, and through an opposing region of a heating coil (21) having a constant output and being arranged coaxially with the pre-heating coil (22) on an exit side of the pre-heating coil (22). Thus, the plurality of outer rings (OR) are sequentially and inductively heated to the target temperature.
摘要翻译： 在将钢外圈（OR）感应加热到目标温度的加热步骤（S1）中，使由保持单元（3）同轴保持的多个外圈（OR）依次通过相对的 具有可变输出的预热线圈（22），并且通过具有恒定输出的加热线圈（21）的相对区域，并且与预热线圈（22）同轴地布置在预热线圈 线圈（22）。 因此，多个外环（OR）被依次感应加热到目标温度。
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10.发明申请HEAT TREATMENT METHOD FOR RING-SHAPED MEMBER AND HEAT TREATMENT EQUIPMENT FOR RING-SHAPED MEMBER 审中-公开环形构件的热处理方法和环形构件的热处理装置公开(公告)号：US20160208353A1
公开(公告)日：2016-07-21
申请号：US15023540
申请日：2014-09-08
发明人： Tsuneaki HIRAOKA , Eri HIRAYAMA , Shintaro SUZUKI
CPC分类号： C21D1/42 , C21D1/10 , C21D9/40 , F16C33/64 , F16C2204/62 , F16C2204/64 , F16C2223/18 , H05B6/06 , H05B6/103 , H05B6/44 , Y02P10/253
摘要： In a heating step (S1) of inductively heating a steel ring-shaped member (R) to a target temperature, a plurality of ring-shaped members (R) retained by a retaining unit (3) coaxially with each other are caused to sequentially pass through an opposing region of a first heating coil (21) having a constant output, and through an opposing region of a second heating coil (22) having a variable output and being arranged coaxially with the first heating coil (21) on an exit side of the first heating coil (21). Thus, the plurality of ring-shaped members (R) are sequentially and inductively heated to the target temperature.
摘要翻译： 在将钢环状构件（R）感应加热到目标温度的加热工序（S1）中，依次保持由保持单元（3）保持的多个环状构件（R） 通过具有恒定输出的第一加热线圈（21）的相对区域，并且穿过具有可变输出的第二加热线圈（22）的相对区域并与第一加热线圈（21）同轴布置在出口 一侧的第一加热线圈（21）。 因此，多个环状构件（R）依次感应加热到目标温度。
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