| 摘要 |
<p>The present invention provides a drawing manufacturing method to prevent transformation of a material, and a drawing apparatus having a foldable holder thereof. According to the present invention, the drawing manufacturing method to prevent transformation of a material, and a drawing apparatus having a foldable holder thereof improves machinability and quality of a drawn product. According to the present invention, the drawing manufacturing method to prevent transformation of a material comprises: a drawing mold insertion step of inserting a material into a drawing mold; a material chucking step; a jaw moving step inducing a drawing process; a material clamping step of clamping a portion of the material passing through the drawing mold with a foldable holder; a material releasing step of releasing the material from the drawing mold and a jaw; and a material discharging step of releasing the material from the foldable holder to be discharged. Moreover, in accordance to the present invention, the drawing apparatus having a foldable holder comprises: a molding workbench providing a moving path of the drawn material; the drawing mold disposed on one end part of the molding workbench; the jaw disposed to be moved in the molding workbench; a jaw transfer device installed in the molding workbench; and the foldable holder installed in the molding workbench, and clamping the drawn material.</p> |
