| 摘要 |
PROBLEM TO BE SOLVED: To provide a drawing die capable of rapidly and easily preventing any torsional deformation associated with the drawing operation at a working site. SOLUTION: An approach die 20 and a bearing die 30 are arranged in the axial direction and stored in a die holder 10. In the approach die 20 on the inlet side, a regular approach section 22 in which the section of a material is brought close to the required shape is provided on a die hole 20C, and rotatable in the circumferential direction. In the bearing die 30 on the outlet side, a regular bearing section 33 in which the material section is matched with the required shape is provided in the die hole 30C, and fixed in the circumferential direction. Drawing is performed by allowing the material to successively pass through the approach die 20 and the bearing die 30. COPYRIGHT: (C)2005,JPO&NCIPI
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