发明授权
- 专利标题: Die cushion control device
- 专利标题(中): 模具缓冲控制装置
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申请号: US11908485申请日: 2006-03-13
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公开(公告)号: US07918120B2公开(公告)日: 2011-04-05
- 发明人: Yuichi Suzuki
- 申请人: Yuichi Suzuki
- 申请人地址: JP Tokyo JP Ishikawa
- 专利权人: Komatsu Ltd.,Komatsu Industries Corp.
- 当前专利权人: Komatsu Ltd.,Komatsu Industries Corp.
- 当前专利权人地址: JP Tokyo JP Ishikawa
- 代理机构: Holtz, Holtz, Goodman & Chick, PC
- 优先权: JP2005-075336 20050316
- 国际申请: PCT/JP2006/304858 WO 20060313
- 国际公布: WO2006/098256 WO 20060921
- 主分类号: B21J9/18
- IPC分类号: B21J9/18 ; B21D22/00 ; B21C51/00
摘要:
A die cushion controller controls an ascending/descending speed of a die cushion pad based on a preset pressure pattern and positional pattern. A position/pressure control switching unit constantly monitors and compares a first speed command signal υpc corresponding to a pressure deviation signal ep and a second speed command signal υhc corresponding to a position deviation signal eh, and selects a smaller one of the speed command signals to be sent to a speed control unit.
公开/授权文献
- US20090025444A1 DIE CUSHION CONTROL DEVICE 公开/授权日:2009-01-29