| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for cutting the bridge of a drawn part in which the cut face of the bridge is not viewed from the external appearance, and the appearance of the product is improved in the manufacture of a pressed part of the entire circumferential drawing shape by a progressive die. SOLUTION: The bridge is formed of SPCC which is a cold rolled steel plate. A product 1 has a drawn portion, and the bridge 2 is manufactured by extending the drawn portion. The bridge 2 is arranged below the product 1 in the sectional shape, and lifted at the same level as the product 1. Next, a cutting face 8 which is a boundary face part of the product 1 and the bridge 2 is cut by a die 3 and a punch 4. The die 3 is provided in the lateral direction of the product 1, the punch 4 is installed below the product 1, and the punch 4 is moved in the sectional direction 5 and the bridge is cut at the cutting face 8 of the product 1 and the bridge 2. Since the cutting face is below the product 1, the cutting face is not viewed from the external appearance of the product 1, resulting in the excellent design. COPYRIGHT: (C)2006,JPO&NCIPI
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