| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flange forming machine of a tubular material having a simple configuration and high bending accuracy and excellent in versatility. Ž<P>SOLUTION: The working machine 10 for carrying out flanging at the end 1a of the tubular material 1 has a base plate 11, disposes a guide rod 14 between the base plate and a clamp means, and has a first plate 12 and a second plate 13 which are advancingly retreatingly controlled along the guide rod 14. The first plate 12 has a rotary gear plate 23 and has a primary roller 30 at a support 31. The second plate has a driven plate 15 following the rotary gear plate 23 and a secondary roller 40. The primary roller 30 and the secondary roller 40 are revolved by the rotation of the rotary gear plate 23, the primary roller 30 has a rotatable conical shape which slidably contacts with the end of the tubular material 1 at an angle of ≥60°, and the secondary roller 40 has a rotatable conical shape which slidably contacts with the end of the tubular material 1 at approximately 90°. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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