Invention Grant
- Patent Title: Die cushion device for press machine
- Patent Title (中): 冲压机模具缓冲装置
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Application No.: US12903930Application Date: 2010-10-13
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Publication No.: US09132463B2Publication Date: 2015-09-15
- Inventor: Hidenari Ota , Yuichi Otsuki
- Applicant: Hidenari Ota , Yuichi Otsuki
- Applicant Address: JP Tokyo
- Assignee: IHI Corporation
- Current Assignee: IHI Corporation
- Current Assignee Address: JP Tokyo
- Agency: Griffin & Szipl, P.C.
- Priority: JP2009/236508 20091013
- Main IPC: B21J9/18
- IPC: B21J9/18 ; B21D24/14 ; B21D24/02

Abstract:
A die cushion device includes: a cushion pad which is located below a blank holder and is movable up and down while being synchronized with the blank holder; a linear driving device which drives a brake member along a predetermined line and regenerates energy from the linear movement of the brake member by combination of a servo motor and a conversion mechanism; and a hydraulic speed change device which transfers the speed of the cushion pad to the brake member via the pressure of hydraulic fluid while increasing the speed and transfers the speed of the brake member to the cushion pad via the pressure of the enclosed hydraulic fluid while decreasing the speed.
Public/Granted literature
- US20110083487A1 DIE CUSHION DEVICE FOR PRESS MACHINE Public/Granted day:2011-04-14
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