Ntn Corporation

Thoratec Corporation

Tc1 LLC

Dai Nippon Printing Co., Ltd.

Thoratee Corporation

Hiroyuki Yamada

Hiroshi Isobe

Takayoshi Ozaki

Ken Sugiura

Kenichi Suzuki

Yukihiro Nishio

Seigo Sakata

Keisuke Sone

Koichi Okada

Tsugito Nakazeki

Kenzou Nose

Naoya Konagai

Nobuyuki Suzuki

Naoki Marui

Takeshi Kanda

Takeshi Tsubouchi

Takehisa Mori

Akira Makita

Takahito Aoki

Tsutomu Hatano

Nobuaki Kanayama

Norio Fukuda

Yoshihide Umetsu

Shinya Nakamura

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.

Work device and dual-arm work device

A working device includes: a linear motion unit having three degrees of freedom and obtained by combining three linear motion actuators; and a rotary unit having three degrees of freedom and obtained by combining a plurality of rotating mechanisms each having one or more rotational degrees of freedom. The linear motion unit is mounted on a mount such that a base portion of the linear motion unit is fixed to the mount. A base portion of the rotary unit is fixedly mounted on an output portion of the linear motion unit. End effectors are mounted on both the output portion of the linear motion unit and an output portion of the rotary unit.

Working device and double-arm type working device

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.

Power generator

This secondary battery degradation suppression device configured to suppress degradation of each of a plurality of batteries connected in series in a power supply includes a plurality of individual degradation suppression devices. Each individual degradation suppression device includes: a voltage measurement section configured to measure DC voltage between terminals of the battery; a comparison section configured to compare measured voltage with a threshold and determine whether the voltage is higher than the threshold; and a discharge section configured to discharge the battery when the comparison section has determined that the voltage is higher than the threshold. The discharge section includes: a discharging circuit connected in parallel to the battery; and a discharge management section configured to control the discharging circuit. The discharging circuit is implemented as a series circuit of a current limiting resistor and a switch.

Deterioration suppression device for secondary battery and individual deterioration suppression device

An operation method for a link actuating device provided with a target value input unit having a height direction target value input portion 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 to be changed only in the height direction along a central axis of a proximal end side link hub. An input converter is provided to calculate, by using an inputted value, a target distal end posture of the link actuating device. The input converter further calculates a command operation amount of each actuator from the result of the calculation, and inputs the command operation amount to the control device.

Operation method for link actuating device

The secondary battery degradation determination device includes: a plurality of voltage sensors connected to respective batteries; a measurement current application device configured to apply a measurement current including an AC component to each battery group; and a controller. A sensor wireless communicator configured to wirelessly transmit a measurement value of a voltage of the AC component is provided to each voltage sensor. One current sensor is provided for a parallel-connection assembly of the battery groups. The controller is configured to receive the measurement value transmitted by the sensor wireless communicator, calculate an internal resistance of each battery by using the measurement value and a detection value of the current sensor, and determine degradation of the battery on the basis of the internal resistance.

Secondary battery degradation determination device

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.

Link actuator to initially set position of origin

A work apparatus includes a parallel link mechanism, a position control actuator, a linear motion mechanism, and a rotating mechanism. The parallel link mechanism includes three or more link mechanisms that couple a distal end side link hub to a proximal end side link hub such that a position of the distal end side link hub can be changed relative to the proximal end side link hub. The position control actuator operates the parallel link mechanism. The linear motion mechanism moves a working body in an axial direction orthogonal to a central axis of the proximal end side link hub. The rotating mechanism is mounted on the distal end side link hub and rotates a work object about a rotation center axis parallel to a movement direction of the linear motion mechanism when the central axis and a central axis are on the same line.

Work machine provided with parallel link mechanism

An operation device for a link actuating device () is provided with a target value input unit () having a height direction target value input portion () 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 () to be changed only in the height direction along a central axis of a proximal end side link hub (). Input converter () is provided to calculate, by using an inputted value, a target distal end posture of the link actuating device (). The Input converter () further calculates a command operation amount of each actuator () from the result of the calculation, and inputs the command operation amount to the control device ().

Operation device for link actuating device

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.

Parallel link mechanism and link actuation device

In this link actuation device, arms of a plurality of link mechanisms are driven to be rotated by actuators, whereby the posture of a distal end side link hub is changed. A divided section setter divides a trajectory on a work surface on which an end effector works, into a plurality of sections at pass points and sets the sections. An arm rotation speed calculator calculates a rotation speed at which each arm performs constant speed rotation in each section on the basis of: a time period of movement in the section which is determined from a target moving speed and the distance of the section; and a rotation-angular movement amount of the arm in the section. A posture change controller performs positioning control on each actuator so as to cause its corresponding arm to continuously rotate at the corresponding rotation speed without acceleration/deceleration.

Device and method for controlling link actuation device

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 relative to a proximal end side link hub of a link actuator 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 having the distal end posture being the specified posture; and a third step of storing an amount of operation of each actuator in a state where the preload is applied to the link actuator, wherein the stored amount of operation is set as the position of the origin of the actuator.

Method for initially setting position of origin of link actuators, and link actuator

A parallel link mechanism includes a proximal end side link hub; a distal end side link hub; and three or more link mechanisms that connect the distal end side link hub to the proximal end side link hub in a position-changeable fashion. Each of the link mechanisms has a trinodal structure. Each revolute pair of each of the link mechanisms includes one pair of pair constituent members connected to each other via a bearing. One of the pair constituent members is formed with a shaft portion fitted to an inner periphery of an inner ring of the bearing, and the other of the pair constituent members is formed with an annular inner face forming portion fitted to an outer periphery of an outer ring of the bearing.

Parallel link mechanism, constant velocity universal joint, and link actuator

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.

Automatic welding machine

This centrifugal blood pump apparatus includes an impeller () provided in a blood chamber (), and a plurality of coils () provided in a motor chamber () for driving the impeller () to rotate with a dividing wall () interposed therebetween. A flexible substrate () in the shape of a strip is arranged to surround outer circumferences of the plurality of coils (), and is connected to the plurality of coils () and a connector (). A driving voltage (VU, VV, VW) is externally supplied to the plurality of coils () via the connector () and the flexible substrate (). Thus, assembling workability, productivity and reliability are improved.

Growing community of inventors

Iwata, Japan

Hiroyuki Yamada