| 摘要 |
<p>An elongated wox]q>iace is treated, e.g. rolled, in a production system where treatment devices move the worl^iece longitudinally in a horizontal travel direction and at a generally constant travel speed along a horizontal longitudinal path and a control ccaaputer is connected to the treatment devices. Straightness of the worlqpioe is measured by gripping the workpiece at a pair of longitudinally spaced sv^orts, applying tension to a longituidnally extending horizontal portion of the worl^iece between the supports, and continuously moving the wor]q>iece in the travel direction at the travel speed with a lower surface of the portion substantially unsu^orted. At least periodically a vertical spacing is measured between the portion and a straight longitudinal reference line extending in the direction between the su^^rts parallel to the worlcpiece at the supports. The vertical-spacing measurement are fed to the contputer for use controlling the devices.</p> |
