发明授权
- 专利标题: Die cushion device
- 专利标题(中): 模具缓冲装置
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申请号: US12989667申请日: 2009-05-13
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公开(公告)号: US08468866B2公开(公告)日: 2013-06-25
- 发明人: Takuji Miyasaka , Hirohide Sato , Ryota Yoshimura , Masaya Nakagawa , Eiji Doba , Hiroyuki Ito , Takeo Arikabe
- 申请人: Takuji Miyasaka , Hirohide Sato , Ryota Yoshimura , Masaya Nakagawa , Eiji Doba , Hiroyuki Ito , Takeo Arikabe
- 申请人地址: JP Tokyo
- 专利权人: Komatsu Ltd.
- 当前专利权人: Komatsu Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Global IP Counselors, LLP
- 优先权: JP2008-134818 20080522
- 国际申请: PCT/JP2009/058902 WO 20090513
- 国际公布: WO2009/142132 WO 20091126
- 主分类号: B21D24/02
- IPC分类号: B21D24/02 ; B30B15/14
摘要:
In the die cushion device, a shock absorber device relieves shock between a cushion pad and a support section. The shock absorber device includes a damping section and an elastic section. The damping section generates reaction force in accordance with the relative speed of the cushion pad with respect to the support section. The elastic section generates reaction force in accordance with the relative displacement of the cushion pad with respect to the support section. The controller section controls a servomotor so that a speed difference between the speed of the slide member and the speed of the support section is set to be a predetermined target speed difference value that changes over time.
公开/授权文献
- US20110045113A1 DIE CUSHION DEVICE 公开/授权日:2011-02-24
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