A method and device for measuring the coaxiality of flanges at both ends of a cylinder
A technology for measuring cylinders and coaxiality, which is applied in the direction of measuring devices, instruments, etc., can solve the problems of no entity to locate the center of the circle, non-concentric flanges, and poor coaxiality, etc., to achieve easy portability, avoid measurement errors, and operate easy effect
Active Publication Date: 2018-05-22
BAODING TIANWEI BAOBIAN ELECTRICAL
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Problems solved by technology
[0002] After the flanges at both ends of the cylinder are butt welded, due to many factors such as the accumulation of part tolerances and welding deformation, the flanges at both ends are usually not concentric, especially for some super long cylinders with large diameters and multi-section welded together. body, the concentricity is worse
Because the flange is a hollow workpiece, there is no entity to locate the center of the flange, so the coaxiality cannot be directly measured. So far, there is no accurate and efficient measurement method and device
Method used
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Embodiment Construction
[0016] Below in conjunction with accompanying drawing, the present invention will be further described by examples.
[0017] A device for measuring the coaxiality of flanges at both ends of a cylinder, comprising a center positioning tool 2, a steel wire 3, and a tension gauge 7, the center positioning tool 2 is a strip, the length is greater than the diameter of the cylinder 4, and the center position is provided with a center Holes 10, flange connection holes 9 are symmetrically opened on the strips on both sides of the center hole, and the position of the flange connection holes matches the flange holes on the flange end face; The flange hole is fixed on the flange at one end of the cylinder, one end of the steel wire 3 is fixed on the center hole 10 of the center of circle positioning tooling, and the other end passes through the inside of the cylinder to the opposite flange, and is tied to the hook of the tension gauge 7.
[0018] The center-of-circle positioning tool is ...
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The invention relates to a method and a device for measuring coaxiality of flanges at two ends of a cylinder, wherein the method and the device belong to the technical field of measurement. The technical solution of the method and the device are characterized in that a circle center positioning tool (2) is fixed to a cylinder body flange; one end of a steel wire (3) penetrates through the central hole (10) of the circle center positioning tool (2), and the other end is hooked with a tensionmeter (7); a same tension value is applied for tensioning a steel wire at seven points of octsection of the flange respectively; and superposed positions between the steel wire and the points of octsection are marked on the thin steel wire one by one. The circle center positioning tool (2) is provided with a central hole (10) and a plurality of pairs of flange connecting holes (9). The method and the device are advantageous in that the method can accurately position the circle center of the flange; high accuracy of measured data, convenient carrying and simple operation of the device are realized; and furthermore the method and the device are suitable for different operation occasions of factory, field, etc.
Description
technical field [0001] The invention relates to a method and a device for measuring the coaxiality of flanges at both ends of a cylinder, belonging to the technical field of detection. Background technique [0002] After the flanges at both ends of the cylinder are butt welded, due to many factors such as the accumulation of part tolerances and welding deformation, the flanges at both ends are usually not concentric, especially for some super long cylinders with large diameters and multi-section welded together. body, the concentricity is even worse. Because the flange is a hollow workpiece, there is no entity to locate the center of the flange, so the coaxiality cannot be directly measured. So far, there is no accurate and efficient measurement method and device. Contents of the invention [0003] The object of the present invention is to provide a method and device for measuring the coaxiality of flanges at both ends of a cylinder, which has simple equipment, low cost, ...
Claims
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IPC IPC(8): G01B21/24
CPCG01B21/24
Inventor 李伟葛惠卿康抗李明冯宝纯齐杭宾
Owner BAODING TIANWEI BAOBIAN ELECTRICAL