Invention Grant
- Patent Title: Die cushion controller of press machine
- Patent Title (中): 冲压机模垫控制器
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Application No.: US12224639Application Date: 2007-02-26
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Publication No.: US07905126B2Publication Date: 2011-03-15
- Inventor: Yuichi Suzuki
- Applicant: Yuichi Suzuki
- Applicant Address: JP Ishikawa
- Assignee: Komatsu Industries Corp.
- Current Assignee: Komatsu Industries Corp.
- Current Assignee Address: JP Ishikawa
- Agency: Holtz, Holtz, Goodman & Chick, PC
- Priority: JP2006-058534 20060303
- International Application: PCT/JP2007/053476 WO 20070226
- International Announcement: WO2007/099892 WO 20070907
- Main IPC: B21C51/00
- IPC: B21C51/00 ; B21J9/18

Abstract:
A die-cushion controlling device includes a position-command-signal outputting section for outputting a position command signal of a die-cushion pad; a position detecting section for detecting a position of the die-cushion pad; a position comparing section for outputting a position deviation signal corresponding to a deviation between a target position value based on the position command signal and a position detection value based on a position detection signal; a position controlling section for outputting a position-speed command signal based on the position deviation signal; a speed controlling section for outputting a motor-current command signal based on the position-speed command signal; a servo amplifier for generating a current corresponding to the motor-current command signal; and an escape-position-command-signal outputting section for outputting a position command signal for commanding the die-cushion pad to escape from a bottom dead center position based on a press signal outputted when a slide has reached a bottom dead center.
Public/Granted literature
- US20090007617A1 Die Cushion Controller of Press Machine Public/Granted day:2009-01-08
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