Title:
絞りプレス加工方法
Document Type and Number:
Japanese Patent JP6750569
Kind Code:
B2
Abstract:
To flatly mold an area used as a part of a product in a press molding process among a formation area of a bead part formed in an interposingly pressing part of a raw material plate.SOLUTION: A bead part is formed in an interposingly pressing part Sb by interposingly pressing the interposingly pressing part Sb of a raw material plate S by a blank holder 4 having a continuously formed recessed groove 42 and an upper die 2 having projection beads 22A and 22B discontinuously formed in a position opposed to the recessed groove 42. A restriction molding part Sa of the raw material plate S is restriction-molded by pressing by the upper die 2 and a lower die 3, and in this restriction press molding process, a part of not contacting with a projection bead 22 of the interposingly pressing part Sb is flatly molded among the bead part formed in the interposingly pressing part Sb.SELECTED DRAWING: Figure 8
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Inventors:
Kyohei Teramoto
Hiroshi Yamada
Kenichi Mitsumatsu
Hiroshi Yamada
Kenichi Mitsumatsu
Application Number:
JP2017114406A
Publication Date:
September 02, 2020
Filing Date:
June 09, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B21D22/20; B21D24/04
Domestic Patent References:
| JP49000355Y1 |
Foreign References:
| WO2014083701A1 | ||||
| US20170157661 | ||||
| US4531395 | ||||
| DE102015220231A1 |
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office