公开(公告)号：US10661398B2

公开(公告)日：2020-05-26

申请号：US15923083

申请日：2018-03-16

Applicant: NTN CORPORATION

Inventor： Hiroshi Isobe ,  Hiroyuki Yamada ,  Keisuke Sone

IPC: B25J9/00 ,  B23P19/04 ,  B25J9/16

Abstract: A link actuator includes a proximal end side link hub, a distal end side link hub, and link mechanisms which connect the distal end side link hub to the proximal end side link hub. Each of the link mechanisms includes a proximal side end link member, a distal side end link member, and an intermediate link member. Each of the proximal end side link hub and the distal end side link hub is provided with a through-hole which allows an origin positioning shaft to be inserted therethrough. The distal end posture of the link actuator is set to a specified posture by inserting the origin positioning shaft through the through-holes. An amount of operation of actuators in a state where preload is applied to the link actuator is set as a position of an origin of the actuator.

公开(公告)号：US09712090B2

公开(公告)日：2017-07-18

申请号：US15267777

申请日：2016-09-16

Applicant: NTN CORPORATION

Inventor： Hiroyuki Yamada ,  Takeshi Kanda ,  Koichi Okada

IPC: B60L11/02 ,  B61C9/38 ,  H02P5/74 ,  H02M3/158 ,  B60K7/00 ,  B60K17/356 ,  B60L11/00 ,  B60L15/00 ,  B60L15/08 ,  H02K11/33 ,  H02K9/00 ,  H02P27/08 ,  H02P1/00 ,  H02P27/04 ,  H02M7/00 ,  H02P5/00 ,  H02M1/00

CPC classification number: H02P5/74 ,  B60K7/0007 ,  B60K17/356 ,  B60K2007/0038 ,  B60K2007/0092 ,  B60L11/00 ,  B60L15/007 ,  B60L15/08 ,  B60L2210/14 ,  B60L2210/44 ,  B60L2220/44 ,  B60L2220/46 ,  B60Y2400/61 ,  H02K9/00 ,  H02K11/33 ,  H02M3/1584 ,  H02M7/003 ,  H02M2001/008 ,  H02P5/00 ,  H02P27/08 ,  Y02T10/645 ,  Y02T10/646

Abstract: A driving device for motors for drive wheels of a vehicle includes a plurality of in-wheel motor assemblies and motor drivers. The motor drivers include a smoothing circuit, an inverter unit to convert the direct current power, inputted through the smoothing circuit, into a three phase alternating current power, an inverter control unit for controlling the inverter unit, and a cooler for cooling the inverter unit. The plurality of the motor drivers are disposed within a single common casing and the plurality of the motor drivers share the smoothing circuit. The inverter control unit of the plurality of the motor drivers is of a control type capable of driving the driving element of the inverter unit according to the PWM scheme and the plurality of the motor drivers have equal cycles of PWM relative to each other and are configured to displace ON and OFF timings of the driving element.

公开(公告)号：US09394979B2

公开(公告)日：2016-07-19

申请号：US14355093

申请日：2012-11-01

Applicant: NTN CORPORATION

Inventor： Hiroyuki Yamada ,  Hiroshi Isobe ,  Keisuke Sone

IPC: F16H57/04 ,  B23Q11/12 ,  F16H21/46 ,  B25J9/00 ,  B25J9/10 ,  B25J19/00 ,  F16C19/06 ,  F16C19/22 ,  F16C33/66

CPC classification number: F16H21/46 ,  B25J9/0048 ,  B25J9/108 ,  B25J19/0062 ,  B25J19/0066 ,  F16C19/06 ,  F16C19/22 ,  F16C33/6625 ,  Y10T74/20207

Abstract: A bearing is interposed in the revolute pair between a proximal end side link hub and each proximal side end link member. A control device controls an actuator, to perform work-time control for causing a determined work operation to be executed and to perform, while the work-time control is stopped, grease circulation control for circulating grease sealed in the bearing. The maximum value θmax of a bending angle in the work-time control does not exceed the maximum allowable bending angle θ′max being the maximum value of the bending angle allowable in the mechanism, and the maximum value of the bending angle in the grease circulation control is greater than the maximum value θmax of the bending angle in the work-time control and smaller than the maximum allowable bending angle θ′max.

Abstract translation: 轴承插入在近端侧连接毂和每个近端侧连杆构件之间的旋转对中。 控制装置控制致动器，进行工作时间控制，以进行确定的工作操作，并且在停止工作时间控制的同时执行润滑脂循环控制，以循环润滑脂密封在轴承中。 工作时间控制中弯曲角度的最大值和最大值不超过最大允许弯曲角度;最大值为机构允许的弯曲角度的最大值，弯曲角度的最大值为 润滑脂循环控制大于工作时间控制中弯曲角度的最大值和最大值，小于最大允许弯曲角度＆amp;最大值;

公开(公告)号：US20150292974A1

公开(公告)日：2015-10-15

申请号：US14434656

申请日：2013-09-12

Applicant: Hiroyuki YAMADA ,  Naoki MARUI ,  Shigeru MIYACHI ,  Noriaki MATSUBARA ,  NTN CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

Inventor： Hiroyuki Yamada ,  Naoki Marui ,  Shigeru Miyachi ,  Noriaki Matsubara

IPC: G01L25/00 ,  A61M25/09 ,  A61M25/00

CPC classification number: G01L25/00 ,  A61B5/6851 ,  A61B5/6852 ,  A61B5/6885 ,  A61B2560/0228 ,  A61B2560/0238 ,  A61M25/00 ,  A61M25/09 ,  A61M2025/0001

Abstract: It is a calibration device for a measurement instrument for measuring a compressive force or a tensile force in a longitudinal direction exerted to a linear body from a predetermined correlation. A stopper part for fixing the linear body is fixed at a one end side entrance and a push/pull movable part for enabling the linear body to be pushed and pulled in an insertion/withdrawal direction at an other end entrance is fixed, so that the relative positions of the stopper part and the push/pull movable part with respect to a sensor main body cannot be changed. A force detector measures the force in the insertion/withdrawal direction exerted from the push/pull movable part to the linear body. The force detector is interposed between the push/pull movable part and the linear body.

Abstract translation: 它是一种用于测量仪器的校准装置，用于从预定的相关性测量施加到线性体的纵向压缩力或张力。 用于固定线状体的止动部固定在一端侧入口，并且能够使另一端部入口处的线性体沿插入/取出方向被拉动的推/拉可动部固定， 阻止部和推/移动部相对于传感器主体的相对位置不能改变。 力检测器测量从推/拉可移动部件向直线体施加的插入/取出方向上的力。 力检测器插入在推/拉可动部和直线体之间。

公开(公告)号：US20140223722A1

公开(公告)日：2014-08-14

申请号：US14255214

申请日：2014-04-17

Applicant: NTN Corporation

Inventor： Hiroshi ISOBE ,  Hiroyuki Yamada ,  Keisuke Sone

IPC: B23P19/04

CPC classification number: B23P19/04 ,  B25J9/0048 ,  B25J9/1623 ,  Y10T29/49826 ,  Y10T29/53

Abstract: The method for initially setting a position of an origin of an actuator includes: a first step of setting a distal end posture being a posture of a distal end side link hub (3) relative to a proximal end side link hub (2) of a link actuator (51) to a specified posture; a second step of applying a preload, which is a force that causes the distal end posture to be changed, to the link actuator (51) having the distal end posture being the specified posture; and a third step of storing an amount of operation of each actuator (53) in a state where the preload is applied to the link actuator (51), wherein the stored amount of operation is set as the position of the origin of the actuator (53).

Abstract translation: 用于初始设定致动器的原点的位置的方法包括：第一步骤，设置作为远端侧连接轮毂（3）的姿势的远端姿势，所述远端姿势相对于所述远端侧连接轮毂 连杆致动器（51）到指定的姿势; 将作为使前端姿势变化的力的预加载作为具有指定姿势的前端姿势的连杆致动器（51）的第二步骤; 以及第三步骤，将每个致动器（53）的操作量存储在所述预载荷施加到所述连杆致动器（51）的状态下，其中所述存储的操作量被设置为所述致动器的原点的位置（ 53）。

公开(公告)号：US11154994B2

公开(公告)日：2021-10-26

申请号：US16164486

申请日：2018-10-18

Applicant: NTN CORPORATION

Inventor： Hiroshi Isobe ,  Kenzou Nose ,  Naoki Marui ,  Hiroyuki Yamada

IPC: B25J17/02 ,  F16H21/46 ,  B25J9/08 ,  B25J9/02 ,  B25J9/00 ,  B25J9/04

Abstract: A work device is configured to perform a work with use of an end effector and have six degrees of freedom. The work device including: a linear motion unit obtained by combining three linear motion actuators, to have three degrees of freedom; and a rotation unit obtained by combining a plurality of rotation mechanisms each having one or more degrees of rotational freedom, to have three degrees of freedom. A base portion of the linear motion unit is fixed to a mount. A base portion of the rotation unit is fixed to an output portion of the linear motion unit. The end effector is mounted to an output portion of the rotation unit.

公开(公告)号：US10965174B2

公开(公告)日：2021-03-30

申请号：US14912816

申请日：2014-07-23

Applicant: NTN Corporation

Inventor： Hiroyuki Yamada ,  Ken Sugiura

IPC: H02K1/14 ,  H02K1/27 ,  H02K21/22 ,  H02K3/18 ,  H02K29/03

Abstract: The present power generator includes: a rotor including a plurality of permanent magnets arranged in a rotation direction; a stator including a plurality of coils provided to face the plurality of permanent magnets, each of the plurality of coils being configured to generate AC voltage during rotation of the rotor; and a plurality of magnetic bodies respectively provided in the plurality of coils, in a direction of center axis of each of the coils, a length (Lm) of each of the magnetic bodies being set to be shorter than a length (Lc) of each of the coils. Accordingly, a larger amount of power than that in a coreless structure is generated.

公开(公告)号：US10443693B2

公开(公告)日：2019-10-15

申请号：US15614038

申请日：2017-06-05

Applicant: NTN CORPORATION

Inventor： Seigo Sakata ,  Yukihiro Nishio ,  Hiroshi Isobe ,  Naoya Konagai ,  Hiroyuki Yamada

IPC: F16H21/48 ,  B25J13/06 ,  F16H21/46 ,  B25J9/10 ,  B25J9/16 ,  G06F3/03 ,  B25J9/00 ,  F16C19/22

Abstract: An operation device for a link actuating device (51) is provided with a target value input unit (57) having a height direction target value input portion (57z) that allows input of a movement amount in a height direction or a coordinate position in the height direction, which causes the distal end posture of the link actuating device (51) to be changed only in the height direction along a central axis of a proximal end side link hub (12). Input converter (58) is provided to calculate, by using an inputted value, a target distal end posture of the link actuating device (51). The Input converter (58) further calculates a command operation amount of each actuator (53) from the result of the calculation, and inputs the command operation amount to the control device (54).

公开(公告)号：US10406677B2

公开(公告)日：2019-09-10

申请号：US15280408

申请日：2016-09-29

Applicant: NTN CORPORATION

Inventor： Hiroshi Isobe ,  Seigo Sakata ,  Naoya Konagai ,  Hiroyuki Yamada

IPC: B25J9/08 ,  B25J9/00 ,  F16H21/46

Abstract: In this parallel link mechanism, a distal end side link hub is coupled to a proximal end side link hub via three or more link mechanisms such that the posture of the distal end side link hub can be altered relative to the proximal end side link hub. Each link mechanism includes proximal side and distal side end link members and an intermediate link member. Each end link member includes: a curved member curved by an arbitrary angle; and a rotation shaft support member fixed to one end of or each of opposite ends of the curved member, and configured to support a rotation shaft rotatably coupled directly or via a bearing to the intermediate link member or the link hub.

公开(公告)号：US09855621B2

公开(公告)日：2018-01-02

申请号：US15155577

申请日：2016-05-16

Applicant: NTN CORPORATION

Inventor： Hiroshi Isobe ,  Seigo Sakata ,  Yukihiro Nishio ,  Hiroyuki Yamada

IPC: B23K9/28 ,  B23K37/02 ,  B23K9/007 ,  B23K26/08

CPC classification number: B23K9/287 ,  B23K9/007 ,  B23K26/0884 ,  B23K37/0241

Abstract: Automatic welding machine includes: a welding torch mounted to a link actuation device set on a mount; and a one-or-more-axes linear motion actuator which causes the link actuation device to advance and retract relative to the mount. The link actuation device includes: a proximal end side link hub disposed on the mount; a distal end side link hub to which the welding torch is mounted; and three or more link mechanisms configured to couple the distal end side link hub to the proximal end side link hub. Each link mechanism includes proximal side and distal side end link members and an intermediate link member. Two or more link mechanisms are each provided with a posture changing actuator which arbitrarily changes the posture of the distal end side link hub relative to the proximal end side link hub.