| 摘要 |
PURPOSE:To enlarge the range in bending by rocking the 2nd holding device which holds the material to be worked with its sliding in the axial direction of the material to be worked and by following the 1st holding device to the 2nd holding device by using a core member as well. CONSTITUTION:A molding material S' is inserted into holding devices 10, 20. In case of performing a bending by rocking the 2nd holding device 20 a core member 12 is moved to the front part by following it to a core member 22 with the extending motion of a spring 14. The core members 12, 22 can closely be fitted by making the state of abutting all the time by matching the front end face 12a of the core member 12 with the rear end face of the core member 22. By using this device a metal strip can be bent well in an extremely small R shape.
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