公开(公告)号：US08646789B2

公开(公告)日：2014-02-11

申请号：US13808410

申请日：2011-07-20

申请人： Takaki Ohdo ,  Masafumi Mori ,  Takashi Okazaki ,  Takumi Fujita

发明人： Takaki Ohdo ,  Masafumi Mori ,  Takashi Okazaki ,  Takumi Fujita

IPC分类号： B60G21/05

CPC分类号： B60G21/051 ,  B60G2200/23 ,  B60G2206/20 ,  B60G2206/722 ,  B60G2206/8102 ,  B60G2206/8201

摘要： A torsion beam type suspension device is provided in which a trailing arm part and a torsion beam part are formed as a unit by press-forming a tailored blank material in which end parts of plate materials having different thicknesses are butt-welded via a weld part. A weld part of the tailored blank material comprises a U-shaped cross section in which front and rear side wall portions are connected via a bottom wall portion, and a pair of cutouts are formed at the edge of each of the side wall portions at positions sandwiching the weld part, and therefore, when the torsion beam part is twistedly deformed, shifting the concentration of stress from the weld part to the cutout enables peeling apart of the weld end part to be prevented and the durability of the torsion beam type suspension device to be enhanced.

摘要翻译： 一种扭力梁式悬挂装置，其中后臂部分和扭转梁部分通过冲压成形一种单一的成形单元形成，其中具有不同厚度的板材的端部通过焊接部分对接 。 定制的坯料的焊接部分包括U形横截面，其中前壁和后侧壁部分经由底壁部分连接，并且在每个侧壁部分的边缘处形成一对切口 夹着焊接部，因此当扭转梁部被扭曲变形时，将焊接部的应力集中到切断部，能够防止焊接端部的剥离，并且扭转梁型悬架的耐久性 要加强

公开(公告)号：US20130214504A1

公开(公告)日：2013-08-22

申请号：US13808410

申请日：2011-07-20

申请人： Takaki Ohdo ,  Masafumi Mori ,  Takashi Okazaki ,  Takumi Fujita

发明人： Takaki Ohdo ,  Masafumi Mori ,  Takashi Okazaki ,  Takumi Fujita

IPC分类号： B60G21/05

CPC分类号： B60G21/051 ,  B60G2200/23 ,  B60G2206/20 ,  B60G2206/722 ,  B60G2206/8102 ,  B60G2206/8201

摘要： A torsion beam type suspension device is provided in which a trailing arm part and a torsion beam part are formed as a unit by press-forming a tailored blank material in which end parts of plate materials having different thicknesses are butt-welded via a weld part. A weld part of the tailored blank material comprises a U-shaped cross section in which front and rear side wall portions are connected via a bottom wall portion, and a pair of cutouts are formed at the edge of each of the side wall portions at positions sandwiching the weld part, and therefore, when the torsion beam part is twistedly deformed, shifting the concentration of stress from the weld part to the cutout enables peeling apart of the weld end part to be prevented and the durability of the torsion beam type suspension device to be enhanced.

摘要翻译： 一种扭力梁式悬挂装置，其中后臂部分和扭转梁部分通过冲压成形一种单一的成形单元形成，其中具有不同厚度的板材的端部通过焊接部分对接 。 定制的坯料的焊接部分包括U形横截面，其中前壁和后侧壁部分经由底壁部分连接，并且在每个侧壁部分的边缘处形成一对切口 夹着焊接部，因此当扭转梁部被扭曲变形时，将焊接部的应力集中到切断部，能够防止焊接端部的剥离，并且扭转梁型悬架的耐久性 要加强

公开(公告)号：US09702834B2

公开(公告)日：2017-07-11

申请号：US14412629

申请日：2013-07-02

申请人： Takumi Fujita ,  Kazuhiro Yagita ,  Toshihiko Sasaki ,  Youichi Maruyama

发明人： Takumi Fujita ,  Kazuhiro Yagita ,  Toshihiko Sasaki ,  Youichi Maruyama

IPC分类号： G01N23/207 ,  G01N23/20

CPC分类号： G01N23/207 ,  G01N23/20 ,  G01N2223/624 ,  G01N2223/632

摘要： An inspection method for a bearing part includes the steps of: emitting X-rays onto a fatigued portion of a bearing part to be inspected; detecting annular diffracted X-rays (X-ray diffraction ring) diffracted by the fatigued portion; and estimating a use condition of the bearing part to be inspected, based on the detected annular diffracted X-rays (X-ray diffraction ring).

公开(公告)号：US07707723B2

公开(公告)日：2010-05-04

申请号：US11205085

申请日：2005-08-17

申请人： Kenji Tamada ,  Kikuo Maeda ,  Tomoaki Kawamura ,  Hirokazu Nakashima ,  Takumi Fujita ,  Mitsuo Sasabe

发明人： Kenji Tamada ,  Kikuo Maeda ,  Tomoaki Kawamura ,  Hirokazu Nakashima ,  Takumi Fujita ,  Mitsuo Sasabe

IPC分类号： B21K1/10

CPC分类号： F16C33/547 ,  F04B27/1063 ,  F16C19/305 ,  F16C23/088 ,  F16C33/34 ,  F16C33/4635 ,  F16C33/48 ,  F16C33/543 ,  F16C33/64 ,  F16C2240/40 ,  F16C2240/50 ,  F16C2360/00 ,  Y10T29/49636 ,  Y10T29/49643 ,  Y10T29/49645 ,  Y10T29/49689 ,  Y10T29/49693

摘要： A method is provided for producing a roller thrust bearing having a plurality of rows of rollers, the bearing featuring reduced differential slip, reduced friction and wear, and increased longevity without flaking. The method includes forming a cage to accommodate the rollers, crowning the rollers, and arranging the rollers in pockets such that the rollers held by a pocket have respective end surfaces in direct contact with each other.

摘要翻译： 提供了一种用于生产具有多排滚子的滚子推力轴承的方法，该轴承具有减小的差速滑移，减少的摩擦和磨损，并且延长寿命而不会剥落。 该方法包括形成保持架以容纳辊子，使辊子隆起并将辊子布置在凹穴中，使得由凹穴保持的辊子具有彼此直接接触的相应的端面。

公开(公告)号：US20080073003A1

公开(公告)日：2008-03-27

申请号：US11662713

申请日：2005-09-08

申请人： Takumi Fujita ,  Nobuyuki Suzuki

发明人： Takumi Fujita ,  Nobuyuki Suzuki

IPC分类号： C21D11/00

CPC分类号： C21D1/42 ,  C21D1/00 ,  C21D1/10 ,  C21D11/00 ,  Y02P10/253

摘要： To provide a heat treatment providing a product with quality as desired, high frequency induction heating treatment equipment capable of temperature control to provide such heat treatment includes temperature controlling means for adjusting in temperature an object to be treated, and quenching means for determining when the object heated should be cooled. The temperature controlling means includes heating means, temperature measuring means involved in temperature control, and temperature adjusting means. The quenching means includes temperature measuring means involved in quenching, and heat treatment adjusting means.

摘要翻译： 为了提供提供具有所需质量的产品的热处理，能够进行温度控制以提供这种热处理的高频感应加热处理设备包括温度调节装置，用于调节待处理物体的温度，以及淬火装置，用于确定物体何时 加热应冷却。 温度控制装置包括加热装置，涉及温度控制的温度测量装置和温度调节装置。 淬火装置包括淬火温度测量装置和热处理调节装置。

公开(公告)号：US07273319B2

公开(公告)日：2007-09-25

申请号：US10971149

申请日：2004-10-25

申请人： Kenji Tamada ,  Kikuo Maeda ,  Tomoaki Kawamura ,  Hirokazu Nakashima ,  Takumi Fujita ,  Mitsuo Sasabe

发明人： Kenji Tamada ,  Kikuo Maeda ,  Tomoaki Kawamura ,  Hirokazu Nakashima ,  Takumi Fujita ,  Mitsuo Sasabe

IPC分类号： F16C33/48

CPC分类号： F16C33/547 ,  F04B27/1063 ,  F16C19/305 ,  F16C23/088 ,  F16C33/34 ,  F16C33/4635 ,  F16C33/48 ,  F16C33/543 ,  F16C33/64 ,  F16C2240/40 ,  F16C2240/50 ,  F16C2360/00 ,  Y10T29/49636 ,  Y10T29/49643 ,  Y10T29/49645 ,  Y10T29/49689 ,  Y10T29/49693

摘要： There is provided a roller thrust bearing providing reduced differential slip, free of significant friction and wear, and providing increased longevity against flaking. The present invention provides a thrust bearing in the form of a roller thrust bearing including at least two radially arranged rows of rollers and a cage holding the rollers, the rollers including at least one roller crowned.

摘要翻译： 提供了滚子推力轴承，其提供减小的差速滑移，没有显着的摩擦和磨损，并且提供增加的寿命以防剥落。 本发明提供一种滚子止推轴承形式的推力轴承，该推力轴承包括至少两个径向排列的滚子列和保持滚子的保持架，滚子包括至少一个辊子。

公开(公告)号：US09329100B2

公开(公告)日：2016-05-03

申请号：US13979784

申请日：2012-01-12

申请人： Takashi Ito ,  Takumi Fujita

发明人： Takashi Ito ,  Takumi Fujita

IPC分类号： G01M13/04

CPC分类号： G01M13/04 ,  G01M13/045

摘要： A lifetime estimation device to estimate a lifetime of a rolling bearing assembly comprising inner and outer rings includes a buildup height estimation unit to estimate in accordance with a predetermined rule a buildup height of the indentation based on the inputted depth of the indentation or the inputted indentation size; and a lifetime estimation unit to estimate the lifetime of the rolling bearing assembly, the lifetime estimation unit being configured to determine a preliminary estimate of the lifetime of the rolling bearing assembly based on a dynamic equivalent load, determine a rate of reduction in a rolling fatigue life based on the buildup height of the indentation, and apply the determined rate of reduction in a rolling fatigue life to the preliminary estimate of the lifetime of the rolling bearing assembly to determine an estimate of the lifetime of the rolling bearing assembly.

摘要翻译： 用于估计包括内环和外环的滚动轴承组件的寿命的寿命估计装置包括累积高度估计单元，其基于所输入的压痕深度或输入的凹痕根据预定规则估计压痕的累积高度 尺寸; 以及寿命估计单元，其估计所述滚动轴承组件的寿命，所述寿命估计单元被配置为基于动态等效载荷来确定所述滚动轴承组件的寿命的初步估计，确定滚动疲劳减少率 基于压痕的积聚高度的寿命，并将确定的滚动疲劳寿命的降低速率应用于滚动轴承组件的寿命的初步估计，以确定滚动轴承组件的寿命的估计。

公开(公告)号：US20150240342A1

公开(公告)日：2015-08-27

申请号：US14428823

申请日：2013-09-12

申请人： Takumi FUJITA ,  Kazuhiro YAGITA

发明人： Takumi Fujita ,  Kazuhiro Yagita

IPC分类号： C23C8/32 ,  C21D1/18 ,  C22C38/02 ,  C21D9/36 ,  C22C38/24 ,  C22C38/04 ,  C23F17/00 ,  C21D9/40

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D1/18 ,  C21D1/74 ,  C21D9/36 ,  C21D9/40 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/24 ,  C23C8/02 ,  C23C8/34 ,  C23C8/80 ,  C23F17/00

摘要： A method of manufacturing a machine component includes the steps of preparing a member made of steel containing 0.1 mass % or more of vanadium, forming a film containing vanadium at a surface of the member, and forming a nitrogen-enriched layer by heating the member having the film formed in a heat treatment gas atmosphere containing nitrogen gas and absent of ammonia gas. In the step of forming a film, the member is heated to and oxidized in a temperature range not lower than 500° C. and lower than A1 transformation point of steel.

摘要翻译： 一种制造机器部件的方法包括以下步骤：制备由含有0.1质量％以上的钒的钢制成的部件，在所述部件的表面形成含有钒的膜，并且通过加热富氮层的部件形成富氮层 该膜在含有氮气并且没有氨气的热处理气体气氛中形成。 在形成膜的步骤中，将该构件在不低于500℃并低于钢的A1相变点的温度范围内加热并氧化。

公开(公告)号：US20060213588A1

公开(公告)日：2006-09-28

申请号：US11384263

申请日：2006-03-21

申请人： Takumi Fujita ,  Nobuyuki Suzuki

发明人： Takumi Fujita ,  Nobuyuki Suzuki

IPC分类号： C21D1/10

CPC分类号： C21D1/10 ,  Y02P10/253

摘要： An induction heat treatment method with which temperature control is enabled, condition setting is easy, and the quality of a treatment object can be stabilized includes: a data acquiring step of heating and quench-hardening a sample of the treatment object to thereby acquire process data; a storing step of storing the process data; a checking step of checking the power supply output transition data and the quenching timing data as to validity based on the temperature transition data stored in the storing step; and a mass production step of performing heat treatment of the treatment object in accordance with the power supply output transition data and the quenching timing data stored in the storing step and checked as to validity in the checking step.

公开(公告)号：US09611533B2

公开(公告)日：2017-04-04

申请号：US14113573

申请日：2012-04-25

申请人： Takumi Fujita ,  Kazuhiro Yagita

发明人： Takumi Fujita ,  Kazuhiro Yagita

IPC分类号： C23C8/34 ,  C21D1/76 ,  C21D9/40 ,  C23C8/32 ,  C21D1/06 ,  C23C8/02 ,  C23C8/80 ,  C23C28/04 ,  F16C33/64

CPC分类号： C23C8/34 ,  C21D1/06 ,  C21D1/76 ,  C21D9/40 ,  C23C8/02 ,  C23C8/32 ,  C23C8/80 ,  C23C28/042 ,  F16C33/64

摘要： A method of manufacturing a machine component includes the steps of: preparing a member made of steel; forming a film containing vanadium at a surface by subjecting the member to oxidation; and forming a nitrogen-enriched layer by heating the member having the film formed in a heat treatment gas atmosphere containing nitrogen gas and absent of ammonia gas for carbonitriding.