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公开(公告)号：US10508318B2
公开(公告)日：2019-12-17
申请号：US15022650
申请日：2014-09-08
发明人： Eri Hirayama , Tsuneaki Hiraoka , Shintaro Suzuki
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).
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2.发明申请Shell Type Needle Roller Bearing, Support Structure for Supporting a Compressor Spindle, and Support Structure for Supporting Driving Portion of a Piston Pump 审中-公开外壳型滚针轴承，支撑压缩机主轴支撑结构和支撑结构，支持活塞泵的驱动部分公开(公告)号：US20080298734A1
公开(公告)日：2008-12-04
申请号：US10584924
申请日：2005-02-10
CPC分类号： F16C33/64 , C21D9/40 , C22C38/00 , F16C19/46 , F16C19/527 , F16C21/005 , F16C33/588 , Y10T29/49684
摘要： To further reduce the manufacturing cost of a shell type needle roller bearing, and to ensure high quality of the shell type outer ring by subjecting the outer ring to a heat treatment that needs no adjustment of the atmosphere.The steel sheet to be formed into the shell type outer ring 1 by pressing is made of a medium to high carbon steel containing carbon by not less than 0.3 mass percent. With this arrangement, the material cost and thus the manufacturing cost are lower than when using a conventional low-carbon structural alloy steel sheet or a steel sheet for cold rolling and pressing. Also, it is possible to ensure high quality of the outer ring by subjecting the outer ring to simple heat treatment without the need for carburizing or carbonitriding, which needs adjustment of the atmosphere.
摘要翻译： 为了进一步降低壳型滚针轴承的制造成本，并且通过对外圈进行不需要调整大气的热处理来确保壳型外圈的高品质。 通过压制形成壳型外圈1的钢板由含碳量的中碳至高碳钢制成不小于0.3质量％。 通过这种布置，与使用传统的低碳结构合金钢板或用于冷轧和压制的钢板相比，材料成本以及制造成本低。 此外，通过对外环进行简单的热处理，无需渗碳或碳氮共渗，需要调整大气，可以确保外圈的高品质。
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公开(公告)号：US20060153485A1
公开(公告)日：2006-07-13
申请号：US10563764
申请日：2004-07-09
申请人： Kikuo Maeda , Tsuneaki Hiraoka , Yasuyuki Watanabe
发明人： Kikuo Maeda , Tsuneaki Hiraoka , Yasuyuki Watanabe
IPC分类号： F16C33/58
CPC分类号： F16C33/64 , C21D1/10 , C21D9/40 , F16C19/30 , F16C19/466 , F16C19/48 , Y02P10/253
摘要： A roller bearing assembly includes an outer race (1) prepared from a steel plate and a plurality of rollers (2) wherein the outer race (1) has a raceway surface (1a) to which induction hardening and tempering are applied. The outer race (1) is a shell type. In addition to the raceway surface (1a), an inner surface of an annular collar (6) at one end of the outer race (1) is also subjected to the induction hardening and tempering. An opposite annular collar (7) is left as a raw material without being heat treated so that it can be easily bent.
摘要翻译： 滚子轴承组件包括由钢板制成的外圈（1）和多个辊（2），其中外座圈（1）具有施加感应淬火和回火的滚道表面（1a）。 外圈（1）是外壳。 除了滚道面（1a）之外，外圈（1）一端的环形轴环（6）的内表面也经过感应淬火和回火。 作为原料留下相对的环形环（7），而不进行热处理，使得其容易弯曲。
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公开(公告)号：US10352365B2
公开(公告)日：2019-07-16
申请号：US14777881
申请日：2014-03-12
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.
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公开(公告)号：US08101031B2
公开(公告)日：2012-01-24
申请号：US11659135
申请日：2005-07-21
CPC分类号： F16C3/02 , B21J5/12 , B21K1/12 , F16C2326/06
摘要： A hollow shaft material is provided with, on an outer peripheral surface side thereof, for example, a movable induction heating coil wrapped therearound. While a high-frequency current with a predetermined frequency is caused to flow through the induction heating coil, the induction heating coil is axially moved to perform induction hardening of the hollow shaft material from the outer peripheral surface side. At this moment, the frequency of the high-frequency current caused to flow through the induction heating coil is set relatively low as to the small-diameter portions, which have a relatively small thickness, and the frequency of the high-frequency current caused to flow through the induction heating coil is set relatively high as to the large-diameter portion, which has a relatively small thickness.
摘要翻译： 空心轴材料在其外周面上设置有例如缠绕在其上的可动感应加热线圈。 当使具有预定频率的高频电流流过感应加热线圈时，感应加热线圈被轴向移动，以从外周面侧进行中空轴材料的感应淬火。 此时，使流过感应加热线圈的高频电流的频率相对于具有相对较小厚度的小直径部分的频率以及高频电流的频率 对于具有较小厚度的大直径部分，通过感应加热线圈的流动被设定得相对较高。
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6.发明申请Shell type needle roller bearing, support structure for supporting a compressor spindle, and support structure for supporting driving portion of a piston pump 审中-公开壳型滚针轴承，用于支撑压缩机主轴的支撑结构，以及用于支撑活塞泵的驱动部分的支撑结构公开(公告)号：US20090218458A1
公开(公告)日：2009-09-03
申请号：US12453372
申请日：2009-05-08
CPC分类号： F16C33/64 , C21D9/40 , C22C38/00 , F16C19/46 , F16C19/527 , F16C21/005 , F16C33/588 , Y10T29/49684
摘要： A shell type needle roller bearing includes an outer ring and a plurality of needle rollers arranged along an inner raceway of the outer ring. A steel sheet to be formed into the shell type outer ring 1 by pressing is made of a medium to high carbon steel containing carbon by not less than 0.3 mass percent.
摘要翻译： 壳型滚针轴承包括沿着外圈的内滚道布置的外圈和多个滚针。 通过压制形成壳型外圈1的钢板由含有碳的中碳碳钢构成为0.3质量％以上。
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公开(公告)号：US20090082117A1
公开(公告)日：2009-03-26
申请号：US11659135
申请日：2005-07-21
CPC分类号： F16C3/02 , B21J5/12 , B21K1/12 , F16C2326/06
摘要： Provided is a method of manufacturing a hollow power transmission shaft, which makes it possible to ensure stable quality even when there is a difference in wall thickness or hardening ratio along an axial direction thereof. A hollow shaft material (1′) is provided with, on an outer peripheral surface (1g) side thereof, for example, a movable induction heating coil (5) wrapped therearound. While a high-frequency current with a predetermined frequency is caused to flow through the induction heating coil (5), the induction heating coil (5) is axially moved to perform induction hardening of the hollow shaft material (1′) from the outer peripheral surface (1g) side. At this moment, the frequency of the high-frequency current caused to flow through the induction heating coil (5) is set relatively low as to the small-diameter portions (1b), which have a relatively small thickness, and the frequency of the high-frequency current caused to flow through the induction heating coil (5) is set relatively high as to the large-diameter portion (1a), which has a relatively small thickness.
摘要翻译： 提供一种制造中空动力传动轴的方法，即使当其轴向方向上的壁厚或硬化率存在差异时，也可以确保质量的稳定。 空心轴材料（1'）在其外周面（1g）侧设置有例如缠绕在其上的可动感应加热线圈（5）。 当使具有预定频率的高频电流流过感应加热线圈（5）时，感应加热线圈（5）被轴向移动，以从外周部（1）进行中空轴材料（1'）的高频淬火 表面（1g）侧。 此时，通过感应加热线圈（5）流过的高频电流的频率相对于具有较小厚度的小直径部分（1b）设定得相对较低，并且频率 对于具有较小厚度的大直径部分（1a），引起流过感应加热线圈（5）的高频电流设置得相对较高。
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公开(公告)号：US10365249B2
公开(公告)日：2019-07-30
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： B21K1/76 , F16D3/20 , B23K15/00 , B23K31/12 , F16D1/027 , G01N29/04 , G01N29/22 , G01N29/24 , G01N29/26 , G01N29/27 , F16D3/2233 , G01N29/275 , G01N29/28
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：US10352369B2
公开(公告)日：2019-07-16
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
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：US11286535B2
公开(公告)日：2022-03-29
申请号：US16312388
申请日：2017-05-26
申请人： NTN CORPORATION
发明人： Tsuneaki Hiraoka , Yuuki Tabuchi , Shintaro Suzuki
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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