公开(公告)号：US10052677B2

公开(公告)日：2018-08-21

申请号：US15027393

申请日：2014-10-08

Applicant: NHK SPRING CO., LTD.

Inventor： Keita Takahashi ,  Tohru Shiraishi ,  Yuichiro Ono ,  Kaoru Nagasawa

IPC: B21F11/00 ,  B21F35/00 ,  B21F23/00 ,  B21F3/06 ,  B21F99/00 ,  H05B6/10

CPC classification number: B21F35/00 ,  B21F3/06 ,  B21F11/005 ,  B21F23/00 ,  B21F99/00 ,  H05B6/101

Abstract: A spring forming device in which the steel wire can be continuously cut off without stopping the feeding of the steel wire in cutting, and in which the steel wire can be uniformly heated, is provided. The spring forming device has a wire supplying mechanism for supplying a steel wire using a plurality of feeding rollers, a heating mechanism for heating the steel wire, a coiling mechanism for forming in a coil state the heated steel wire, and a cutting mechanism for cutting the steel wire coiled at a given number of turns off the steel wire remained backward. A cutting blade of the cutting mechanism follows tracks having a speed Va that moves to the receiving blade and a speed Vc that moves in an axial direction of the coiled steel wire, in cutting of the steel wire.

公开(公告)号：US12123851B2

公开(公告)日：2024-10-22

申请号：US17040365

申请日：2019-03-14

Applicant: NHK SPRING CO., LTD.

Inventor： Kaoru Nagasawa ,  Kotaro Nukui ,  Suguru Shigeno

IPC: G01N3/12 ,  G01B21/04 ,  G01L5/00

CPC classification number: G01N3/12 ,  G01B21/042 ,  G01L5/0033

Abstract: Provided is a load measuring device and a load measuring method, capable of preventing a measuring error caused by an initial load in a state where an elastic member is held by a pair of holding parts when a load of the elastic member at the time of stretching is measured. A pair of holding parts 5, 7 are caused to approach or space away with respect to each other relatively to an initial position at which the pair of the holding parts hold a close contact spring S, thereby making an initial load measured at the initial position zero, the pair of holding parts 5, 7 are caused to space away with respect to each other from a starting position being a position at which the initial load becomes zero, and a load at a time of stretching is caused to be measured.

公开(公告)号：US20240342999A1

公开(公告)日：2024-10-17

申请号：US18684869

申请日：2022-10-06

Applicant: NHK Spring Co., Ltd.

Inventor： Hidetoshi Mizuta ,  Atom Furuse ,  Kaoru Nagasawa ,  Fumitaka Arai

IPC: B29C65/14 ,  B29C65/00

CPC classification number: B29C65/1416 ,  B29C66/742 ,  B60G2206/821

Abstract: A bonding method bonds a buffer member to an adherend member, and includes: an adhesive application step of applying an adhesive to a part of the buffer member, the part being bonded to the adherend member; a first heating step of heating a part of the adherend member, the part being bonded to the buffer member; a second heating step of heating the part of the adherend member after the first heating step; and an attachment step of attaching the buffer member to the adherend member after the second heating step.

公开(公告)号：US20230166322A1

公开(公告)日：2023-06-01

申请号：US17696265

申请日：2022-03-16

Applicant: NHK Spring Co., Ltd.

Inventor： Ryuichi Numakunai ,  Kaoru Nagasawa ,  Fumitaka Arai ,  Kiyoaki Tanabe ,  Yukiya Mori ,  Katsunori Suzuki ,  Akira Okubo

IPC: B21J13/08 ,  B21J9/02 ,  B21J9/20

CPC classification number: B21J13/085 ,  B21J9/02 ,  B21J9/20

Abstract: A manufacturing method includes: conveying a target to a processing unit by using a conveying arm; conveying the target to a correction information acquiring unit provided in a position different from a position of the processing unit; acquiring position information relating to a position of the target conveyed to the correction information acquiring unit in a three-dimensional space; correcting a conveying position of the conveying arm to the processing unit based on the position information; and executing processing for the target conveyed to the corrected conveying position to manufacture a product.