| 摘要 |
PURPOSE:To prevent the generation of double grinding and intense heat during working and remove the possibility to cause the combustion of abrasive oil by detecting the presence of surface defect greater than the specified before grinding steel strip and by automatically avoiding grinding work. CONSTITUTION:Bending work is applied to a steel strip 1 with breaker rollers 2 and 2' and billy roller 3. When the steel strip 1 is polished with an abrasive belt 4 which is brought in contact with the surface of the strip 1, bending work is provided with check rollers 14 and 14' and a pushing up roller 15 before the strip 1 is polished with the abrasive belt 4. By bringing the bending surface into contact with a touch roller 6, the vertical movement of the touch roller 6 affected by the surface defects on the strip is converted into a signal. When the signal is greater than the specified, a cylinder 17 is operated thereby moving the above billy roller so as to avoid polishing work. In addition to the above touch roller as a means of detecting surface defects, a distance meter is also available, where supersonic waves or excessive current are applied. |
