| 摘要 |
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. |
