Invention Grant
- Patent Title: Drawing method and servo press system
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Application No.: US14204609Application Date: 2014-03-11
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Publication No.: US09694412B2Publication Date: 2017-07-04
- Inventor: Yasuyuki Kohno , Tadahiro Kondo , Ryosho Iwamura
- Applicant: AIDA ENGINEERING, LTD.
- Applicant Address: JP Kanagawa
- Assignee: AIDA ENGINEERING, LTD.
- Current Assignee: AIDA ENGINEERING, LTD.
- Current Assignee Address: JP Kanagawa
- Agency: McDermott Will & Emery LLP
- Priority: JP2013-051476 20130314
- Main IPC: B21D43/05
- IPC: B21D43/05 ; B21D22/20 ; B21D24/02 ; B21D24/00

Abstract:
The present invention provides a servo press system and a drawing method using the servo press system. The drawing method according to the aspect of the present invention includes: a stopping step of stopping the slide for a first period in a course of a stroke for performing drawing; a keeping step of reducing the die cushion force to below a predetermined die cushion force and keeping the die cushion force for a second period within the first period for which the slide is stopped; and a restarting step of restarting the slide after keeping the die cushion force for the second period, wherein drawing including the stopping step, the keeping step, and the restarting step is performed at least one time in the course of the stroke for performing drawing.
Public/Granted literature
- US20140260495A1 DRAWING METHOD AND SERVO PRESS SYSTEM Public/Granted day:2014-09-18
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