| 摘要 |
PROBLEM TO BE SOLVED: To enhance forming efficiency by minimizing the proportion of successive forming in combining the successive forming and the embossing of the whole sheet. SOLUTION: The periphery of a sheet 10 is fixed by a supporting frame 11 and a clamp 12. A shape pressing member 13 is disposed below the sheet 10. The pressing member 13 is pushed up to emboss the whole sheet 10 into a shape which is roughly close to a desired shape (AB). Subsequently, a partial forming tool 20 is placed on a forming convex corresponding part 15, which has a complicated shape which cannot be formed by the embossing, so that the sheet is sandwiched between the tool and the forming convex part 15. The tool 20 is pressed by a pressing block 22 to deform the sheet, and a preformed convex part 3a conforming to the surface of the forming convex part 15 (BC) is formed. Thereafter, the partial forming tool 20 is removed. The sheet in its predetermined parts, which have not been formed by the preforming, are subjected to successive forming by depressing rod-shaped pressing members 24 to form a convex part 3 precisely conforming to the forming convex part 15 and to form a concave part 25 in a forming concave part 16. COPYRIGHT: (C)2003,JPO
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