| 摘要 |
According the present invention, a manufacturing method of a T-shaped nut (T) comprises: a step of forming an indented recess from a lower side of a raw material towards an upper side of the raw material; a step of forming an upper plate unit disposed on an upper portion of the indented recess by pressing an upper portion of the raw material, and an extension unit extended from a circumference of an upper plate unit to a prescribed length, having a diameter greater than a body unit surrounding the circumference of the indented recess; a step of pressing the upper plate unit to spread the upper plate unit towards the circumference of the upper plate unit to form an opening part on the upper portion of the indented recess; a step of folding the upper plate unit spread towards the circumference towards the outside to bring the upper plate unit in contact with the extension unit; and a step of integrating the upper plate unit and the extension unit. |
