公开(公告)号：US11130229B2

公开(公告)日：2021-09-28

申请号：US16545626

申请日：2019-08-20

Applicant: NTN CORPORATION

Inventor： Seigo Sakata ,  Yuuki Shimura ,  Hiroshi Isobe ,  Naoki Marui

IPC: B25J9/10 ,  B25J9/16 ,  B23K26/08 ,  B25J11/00

Abstract: An operation command generator includes: an area division unit configured to divide a line on a flat work surface of a target workpiece W into a straight area and a corner area, using a sharp boundary surface; a straight area operation command generation unit configured to generate a command for operating only the linear motion mechanism while keeping the posture of the parallel link mechanism fixed, in the straight area; and a corner area operation command generation unit configured to generate a command so that an acting point of the end effector passes on the boundary surface at a substantially constant speed by the linear motion mechanism and the parallel link mechanism performing coordinated operations in the corner area.

公开(公告)号：US20190111561A1

公开(公告)日：2019-04-18

申请号：US16217474

申请日：2018-12-12

Applicant: NTN CORPORATION

Inventor： Hiroshi ISOBE ,  Seigo Sakata ,  Yuuki Shimura

IPC: B25J9/00 ,  B25J9/16 ,  B25J9/12 ,  B25J9/10

Abstract: A work device includes a work device body and a contact preventer. The work device body includes a linear motion unit having three degrees of freedom and a rotary unit having three degrees of freedom. An end effector is mounted on an output portion of the rotary unit. The contact preventer separates a working region in which the work device body is installed, from a non-working region outside the working region. The contact preventer includes: an entry allowing portion allowing an object to enter the working region therethrough; and an entry allowing portion entry detection sensor configured to detect entry of an object into the working region through the entry allowing portions.

公开(公告)号：US11247329B2

公开(公告)日：2022-02-15

申请号：US16217474

申请日：2018-12-12

Applicant: NTN CORPORATION

Inventor： Hiroshi Isobe ,  Seigo Sakata ,  Yuuki Shimura

IPC: B25J9/00 ,  B25J19/06 ,  B25J9/10 ,  B25J9/12 ,  B25J9/16 ,  B25J9/02 ,  B25J11/00

Abstract: A work device includes a work device body and a contact preventer. The work device body includes a linear motion unit having three degrees of freedom and a rotary unit having three degrees of freedom. An end effector is mounted on an output portion of the rotary unit. The contact preventer separates a working region in which the work device body is installed, from a non-working region outside the working region. The contact preventer includes: an entry allowing portion allowing an object to enter the working region therethrough; and an entry allowing portion entry detection sensor configured to detect entry of an object into the working region through the entry allowing portions.

公开(公告)号：US20170133916A1

公开(公告)日：2017-05-11

申请号：US15412677

申请日：2017-01-23

Applicant: NTN CORPORATION

Inventor： Masatoshi MIZUTANI ,  Hiroyuki Noda ,  Natsuhiko Mori ,  Ryousuke Karasawa ,  Tomomi Goto ,  Yuuki Shimura

IPC: H02K11/04 ,  H02K1/22 ,  F03D9/25 ,  H02K1/12 ,  H02K11/00 ,  H02K7/18

CPC classification number: H02K11/046 ,  F03D9/25 ,  H02K1/12 ,  H02K1/22 ,  H02K7/183 ,  H02K11/0094 ,  H02P9/08 ,  Y02E10/725

Abstract: A power generator includes: an output iron core having an output winding wound therearound; and a field iron core having a main field winding and an auxiliary field winding wound therearound, and is a self-excitation type in which one of the output iron core and the field iron core serves as a stator and the other serves as a rotor, the main field windin is connected to a first rectifying element, the auxiliary field winding is connected to a second rectifying element, and power is generated by relative rotation of the stator and the rotor. The power generator is provided with an initial excitation unit configured to apply, to one or both of the output iron core and the field iron core, a magnetic force to a degree required for initial excitation in power generation.