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公开(公告)号：US20110010940A1
公开(公告)日：2011-01-20
申请号：US12833367
申请日：2010-07-09
Applicant: Tsunenari FUTAGI , Nobuyuki KAKIYA , Tadahisa AKIYAMA , Ikuo KATO , Akitoshi UCHIUMI , Shinichi OHNAKA , Toshimasa KOSHIMIZU , Haruo MACHIDA , Yuji MATSUMOTO
Inventor： Tsunenari FUTAGI , Nobuyuki KAKIYA , Tadahisa AKIYAMA , Ikuo KATO , Akitoshi UCHIUMI , Shinichi OHNAKA , Toshimasa KOSHIMIZU , Haruo MACHIDA , Yuji MATSUMOTO
CPC classification number: B21D22/16 , Y10T29/49524 , Y10T29/49529 , Y10T29/49531
Abstract: A workpiece having a first constant diameter portion, a tapered reduced-diameter portion, a concave portion, a tapered increased-diameter portion, and a second constant diameter portion is formed by machining the tapered reduced-diameter portion, and then machining the tapered increased-diameter portion and the concave portion.
Abstract translation: 通过加工锥形缩径部形成具有第一恒定直径部分，锥形缩径部分，凹部，渐缩直径部分和第二恒定直径部分的工件，然后加工锥形增加 直径部分和凹部。
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公开(公告)号：US20110005292A1
公开(公告)日：2011-01-13
申请号：US12830119
申请日：2010-07-02
Applicant: Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
Inventor： Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
IPC: B21D19/12
CPC classification number: B21D19/12 , B21D51/2615
Abstract: A method of forming a hollow curled portion on a hollow body, the curled portion being oriented from one end to the other end of the hollow body. The method includes a bending step of curving an end of the hollow body toward another end of the hollow body, thereby forming a curled portion, an ironing step of ironing the curled portion with a die, and a recurving step of stopping the die from ironing the curled portion and allowing the curled portion to recurve under its own resiliency in a direction opposite to the direction in which the end of the hollow body has been curved. The ironing step and the recurving step are repeated.
Abstract translation: 一种在中空体上形成中空卷曲部分的方法，所述卷曲部分从所述中空体的一端朝向另一端。 该方法包括将中空体的端部朝向中空体的另一端弯曲的弯曲步骤，从而形成卷曲部分，用模具熨烫卷曲部分的熨烫步骤以及使模具停止熨烫的循环步骤 卷曲部分并且允许卷曲部分在与其中空主体的端部已经弯曲的方向相反的方向上在其自身的弹性下弯曲。 重复熨烫步骤和循环步骤。
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公开(公告)号：US08468698B2
公开(公告)日：2013-06-25
申请号：US12833367
申请日：2010-07-09
Applicant: Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi , Shinichi Ohnaka , Toshimasa Koshimizu , Haruo Machida , Yuji Matsumoto
Inventor： Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi , Shinichi Ohnaka , Toshimasa Koshimizu , Haruo Machida , Yuji Matsumoto
IPC: B23P17/00
CPC classification number: B21D22/16 , Y10T29/49524 , Y10T29/49529 , Y10T29/49531
Abstract: A workpiece having a first constant diameter portion, a tapered reduced-diameter portion, a concave portion, a tapered increased-diameter portion, and a second constant diameter portion is formed by machining the tapered reduced-diameter portion, and then machining the tapered increased-diameter portion and the concave portion.
Abstract translation: 通过加工锥形缩径部形成具有第一恒定直径部分，锥形缩径部分，凹部，渐缩直径部分和第二恒定直径部分的工件，然后加工锥形增加 直径部分和凹部。
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公开(公告)号：US08312753B2
公开(公告)日：2012-11-20
申请号：US12830119
申请日：2010-07-02
Applicant: Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
Inventor： Tsunenari Futagi , Nobuyuki Kakiya , Tadahisa Akiyama , Ikuo Kato , Akitoshi Uchiumi
CPC classification number: B21D19/12 , B21D51/2615
Abstract: A method of forming a hollow curled portion on a hollow body, the curled portion being oriented from one end to the other end of the hollow body. The method includes a bending step of curving an end of the hollow body toward another end of the hollow body, thereby forming a curled portion, an ironing step of ironing the curled portion with a die, and a recurving step of stopping the die from ironing the curled portion and allowing the curled portion to recurve under its own resiliency in a direction opposite to the direction in which the end of the hollow body has been curved. The ironing step and the recurving step are repeated.
Abstract translation: 一种在中空体上形成中空卷曲部分的方法，所述卷曲部分从所述中空体的一端朝向另一端。 该方法包括将中空体的端部朝向中空体的另一端弯曲的弯曲步骤，从而形成卷曲部分，用模具熨烫卷曲部分的熨烫步骤以及使模具停止熨烫的循环步骤 卷曲部分并且允许卷曲部分在与其中空主体的端部已经弯曲的方向相反的方向上在其自身的弹性下弯曲。 重复熨烫步骤和循环步骤。
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