| 摘要 |
The invention relates to a method and device for determination of the relative planarity of a strip (2), whereby the strip (2) is diverted around a rotating measuring roller (1) with a known tension over the width (B) thereof, which comprises bearing pins (4, 5) to both sides of a support region for the strip, one of which is held in the radial and axial direction in a fixed bearing (9) and the other is held in just the radial direction in a moving bearing (10). A pressure force measurement is carried out at the measuring roller (1). The measuring roller (1) is mounted on at least one further moving bearing (11) on a bearing pin and the bearing reaction force is measured on one of the bearings. A strip tensile distribution across the strip width (B) is computed from the above and compared with a theoretical strip tensile distribution for a strip with absolute planarity resulting from the strip thickness at each point across the strip width (B) and the position of the strip (2) on the measuring roller (1) and dependent on the known tension. A device for carrying out said method is provided with a pressure measuring device (12) on one of the bearings, connected to a transformer device, which generates information about the strip tensile distribution and/or the planarity of the strip from the measured bearing reaction force. |
