| 摘要 |
A draw forming method for drawing a blank material ( 15 ). In this method, a restraint region ( 98 ) that is an outer peripheral section ( 21 ) of the blank material is held by a first holder means ( 22 ), and then a tension region ( 97 ) inside the outer peripheral section is displaced upward by a second holder means ( 23 ) relative to the restraint region. The displacement applies tensile force to a drawing region ( 96 ) that is the central section of the blank material.
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