| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of improving production efficiency and achieving a flexible processed shape with short processing time, in a method of spinning a tube material.SOLUTION: In a spinning method using elements including: a tube material 102; a pair of fixtures 101 which hold both ends of the tube material 102; and a roller 103 having a predetermined curved shape in order to shape the tube material 102, while circumferential portions at both ends of the tube material 102 are fitted in and held by circumferential grooves 104 provided on side surfaces of the fixtures 101, the method includes a step of transferring a curved shape on a side surface of the roller 103 to a side surface of the tube material 102 by rotating the fixtures 101 which hold the tube material 102 around a first axis, rotating the roller 103 around a second axis, moving the rotating roller 103 in an X direction, and pressing the side surface of the roller 103 against the side surface of the tube material 102 between the rotating fixtures 101. |
