| 摘要 |
PROBLEM TO BE SOLVED: To provide a progressive die, wherein the material being worked is not buckled when drawing, even for progressive dies having different structures for the first drawing process or for subsequent drawing processes. SOLUTION: When a first stripper plate 113 reaches the almost same height as a second stripper plate 223 by lowering a punch holder 100, a second punch plate 122 is designed to contact the second stripper plate 223 while maintaining the gap to a second backing plate 121.
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