| 摘要 |
<p>Disclosed herein is a manufacturing apparatus used for spinning a pipe. The manufacturing apparatus includes a support plate which has an upper flange, and lower flanges spaced apart from each other by a predetermined interval, and is connected to a vertical moving cylinder. First and second rollers are rotatably connected, respectively, to lower portions of first and second arms each having a flange, using pins, and are located on either of outside or inside of the front end of the circumference of a workpiece. A third roller is provided on a side of the front end of the circumference of the workpiece in such a way as to be opposite the first and second rollers, and is rotatably connected, using a pin, to a third arm having a flange, and is located to face the central portion of a space along the same line.</p> |
