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    Coil spring processing device
    1.
    发明授权
    Coil spring processing device 有权

    公开(公告)号：US10807215B2

    公开(公告)日：2020-10-20

    申请号：US16107629

    申请日：2018-08-21

    Applicant: NHK SPRING CO., LTD.

    Inventor： Hideki Okada ,  Daisuke Yokota ,  Senri Moriyama ,  Satoshi Akiyama ,  Masaya Komazaki ,  Go Nagayasu

    IPC: B24C1/10 ,  B24C3/24 ,  B24C9/00

    Abstract: A coil spring processing device includes an end positioning device, shot peening device, and controller. The end positioning device positions ends of a coil spring. The shot peening device includes a turntable mechanism, pressure mechanism, rotation mechanism which rotates the coil spring, and projection mechanism which projects shots. Holding mechanisms each include a lower shifting prevention jig and an upper shifting prevention jig. The controller stops a first holding mechanism and a second holding mechanism in rotation stop positions corresponding to end turn portions of the coil spring.

    Vertical motion impeller-type shot peening device and coil spring
    4.
    发明授权
    Vertical motion impeller-type shot peening device and coil spring 有权

    公开(公告)号：US10315287B2

    公开(公告)日：2019-06-11

    申请号：US15434519

    申请日：2017-02-16

    Applicant: NHK SPRING CO., LTD.

    Inventor： Senri Moriyama ,  Satoshi Akiyama ,  Masaya Komazaki ,  Go Nagayasu ,  Hideki Okada ,  Daisuke Yokota

    IPC: B24C1/10 ,  B24C3/24 ,  F16F1/02 ,  F16F1/04

    Abstract: A vertical motion impeller-type shot peening device performs a second shot peening to a coil spring including first shot peening indentations. The vertical motion impeller-type shot peening device includes a workpiece holding mechanism including a lower end turn support and an upper end turn support, a stress applying mechanism which compresses the coil spring, a rotation mechanism, and a projection mechanism which includes a pair of vertically movable impeller units. A first rough surface including first shot peening indentations is formed on a part of end turn portions of the coil spring. A second rough surface including second shot peening indentations is formed on the entire surface of wire except for the first rough surface.

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