METHOD FOR DETERMINING ECCENTRICITY OF HOLLOW BLOCK AND DEVICE THEREFOR
PROBLEM TO BE SOLVED: To provide a method and a device for indicating the actually useful degree of the eccentricity by detecting the three dimensional eccentricity of a hollow block along the vertical coordinates of the hollow block at the entrance of a rolling mill. SOLUTION: The change of the ecc...
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| creator | SAUERLAND MARTIN HAEUSLER KARL HEINZ |
| description | PROBLEM TO BE SOLVED: To provide a method and a device for indicating the actually useful degree of the eccentricity by detecting the three dimensional eccentricity of a hollow block along the vertical coordinates of the hollow block at the entrance of a rolling mill. SOLUTION: The change of the eccentricity e of a hollow block 1 is approximately determined as the change of a wall thickness s being as the function of a vertical coordinate z extending to the direction of the vertical axis L of the hollow block and a rotation angle around the vertical coordinates in accordance with a formula s ( , z)= s0(z)+s1(z)cos( +δ(z)). Given times of measurements for wall thickness are performed when a measurement device passes the hollow block to provide the measured value to a calculation method. The measured values are Fourier-transformed by the calculation method in order to determine approximations as the vertical coordinate z and rotation angle due to the functional change of the wall thickness s. The invention relates to the device for particularly practicing the method. COPYRIGHT: (C)2004,JPO |
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SOLUTION: The change of the eccentricity e of a hollow block 1 is approximately determined as the change of a wall thickness s being as the function of a vertical coordinate z extending to the direction of the vertical axis L of the hollow block and a rotation angle around the vertical coordinates in accordance with a formula s ( , z)= s0(z)+s1(z)cos( +δ(z)). Given times of measurements for wall thickness are performed when a measurement device passes the hollow block to provide the measured value to a calculation method. The measured values are Fourier-transformed by the calculation method in order to determine approximations as the vertical coordinate z and rotation angle due to the functional change of the wall thickness s. The invention relates to the device for particularly practicing the method. 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SOLUTION: The change of the eccentricity e of a hollow block 1 is approximately determined as the change of a wall thickness s being as the function of a vertical coordinate z extending to the direction of the vertical axis L of the hollow block and a rotation angle around the vertical coordinates in accordance with a formula s ( , z)= s0(z)+s1(z)cos( +δ(z)). Given times of measurements for wall thickness are performed when a measurement device passes the hollow block to provide the measured value to a calculation method. The measured values are Fourier-transformed by the calculation method in order to determine approximations as the vertical coordinate z and rotation angle due to the functional change of the wall thickness s. The invention relates to the device for particularly practicing the method. COPYRIGHT: (C)2004,JPO</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PHYSICS PUNCHING METAL ROLLING OF METAL TESTING TRANSPORTING |
| title | METHOD FOR DETERMINING ECCENTRICITY OF HOLLOW BLOCK AND DEVICE THEREFOR |
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