Title:
Drawing method
Document Type and Number:
Japanese Patent JP5967223
Kind Code:
B2
Abstract:
A draw bead (1d, 47c, 59c) is formed in a plate-shaped material (1, 47) in which a drawn portion (1a) is formed, outside the drawn portion (1a), the draw bead (1d, 47c, 59c) being used to adjust an inflow of the plate-shaped material (1, 47) into a drawing die (25, 49). The drawn portion (1a) is drawn in the plate-shaped material (1, 47) by using the draw bead (1d, 47c, 59c) as formed. The draw bead (1d, 47c, 59c) is crushed and flattened after the drawn portion (1a) is drawn.
Inventors:
Inoue Haruji
Yusuke Matsuno
Yasushi Murakami
Yusuke Matsuno
Yasushi Murakami
Application Number:
JP2014554469A
Publication Date:
August 10, 2016
Filing Date:
December 25, 2013
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B21D22/30; B21D24/04; B21D24/16; B23K11/00
Domestic Patent References:
| JPH0970626A | 1997-03-18 | |||
| JPS58205618A | 1983-11-30 | |||
| JP2004291005A | 2004-10-21 |
Foreign References:
| US20120318034A1 | 2012-12-20 | |||
| US3460368A | 1969-08-12 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu