Invention Grant
- Patent Title: Method for controlling the flow of material when deep-drawing a workpiece, and deep-drawing device
- Patent Title (中): 深拉工件时控制材料流动的方法和深冲装置
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Application No.: US12936727Application Date: 2009-03-31
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Publication No.: US09327332B2Publication Date: 2016-05-03
- Inventor: Thomas Flehmig , Klaus Göhler , Konstantinos Savvas
- Applicant: Thomas Flehmig , Klaus Göhler , Konstantinos Savvas
- Applicant Address: DE Duisburg
- Assignee: ThyssenKrupp Steel Europe AG
- Current Assignee: ThyssenKrupp Steel Europe AG
- Current Assignee Address: DE Duisburg
- Agency: Reinhart Boerner Van Deuren P.C.
- Priority: DE102008017728 20080407
- International Application: PCT/EP2009/053835 WO 20090331
- International Announcement: WO2009/124860 WO 20091015
- Main IPC: B21D22/22
- IPC: B21D22/22 ; B21D24/04 ; B21D25/00

Abstract:
The aim of the invention is to provide a method for controlling the flow of material when deep-drawing a workpiece, which better utilizes the drawing capacity of a workpiece and produces a better shape accuracy, particularly of the bottom of the drawn part. The aim is achieved by a method in which the deep-drawing process is performed incrementally and in which at least one bead is incorporated into the flange region of the workpiece prior to each increment of the deep-drawing process. Due to this, the shape accuracy of the bottom can be improved and material accumulations in the flange zone can be prevented.
Public/Granted literature
- US20110094283A1 Method for Controlling the Flow of Material When Deep-Drawing a Workpiece, and Deep-Drawing Device Public/Granted day:2011-04-28
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