Method and device for measuring roundness of cylindrical barrel
A cylindrical cylinder and roundness measurement technology, applied in the field of measurement, can solve problems such as error-prone, poor reliability, and low operating efficiency, and achieve the effect of improving accuracy
Pending Publication Date: 2021-12-10
STANDARDS & METROLOGY RES INST CHINA ACADEMY OF RAILWAY SCI
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Problems solved by technology
In the prior art, the inspection of the roundness of the shell mostly adopts the inner bow or outer bow template. The above method is a manual measurement method, which has low operating efficiency, poor reliability and error-prone
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[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0038] The execution subject of the method for measuring the roundness of a cylindrical cylinder provided in the embodiment of the present invention includes but is not limited to a computer.
[0039] figure 2 It is a schematic flow chart of the method for measuring the roundness of a cylindrical barrel provided by an embodiment of the present invention, such as figure 2 As shown, the round...
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The invention provides a method and a device for measuring the roundness of a cylindrical barrel. The method comprises the following steps of acquiring three-dimensional point cloud data of the cylindrical barrel, preprocessing the three-dimensional point cloud data to obtain preprocessed three-dimensional point cloud data, correcting the preprocessed three-dimensional point cloud data to enable the central axis of the cylindrical barrel to be parallel to the target axis, and obtaining corrected three-dimensional point cloud data, wherein the target axis is preset, performing axis fitting on the corrected three-dimensional point cloud data to obtain a central axis equation of the cylindrical barrel, according to the coordinates of the measurement position and the central axis equation of the cylindrical barrel, acquiring the roundness of the section where the measurement position is located, wherein the measurement position is a point on the cylindrical barrel. The device is used for executing the method. According to the method and the device for measuring the roundness of the cylindrical barrel provided by the embodiment of the invention, the accuracy of measuring the roundness of the cylindrical barrel is improved.
Description
technical field [0001] The invention relates to the field of measurement technology, in particular to a method and device for measuring the roundness of a cylindrical barrel. Background technique [0002] At present, the tank container is a stainless steel pressure vessel installed in a fastened external frame. It is usually used in the logistics fields such as chemical industry, food and beverage, and energy. It is economical, fast and safe. [0003] The tank container is a double-hull structure, such as figure 1 As shown, the tank container includes a frame 1, an outer cylinder 2, an inner cylinder 3, a vacuum insulation layer 4, a valve instrument box 5, a support device 6 and other structures. Among them, the outer surface of the inner cylinder is wound with multi-layer aluminum foil and glass fiber paper to form a multi-layer insulation layer. There are 8 supporting devices between the inner cylinder and the outer cylinder. There is a sandwich between the outer cylinde...
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IPC IPC(8): G01B11/24
CPCG01B11/2408
Inventor 武慧杰邵学君庞庆张志鹏齐超周宝珑郭有为吴会军刘亚强刘云锴
Owner STANDARDS & METROLOGY RES INST CHINA ACADEMY OF RAILWAY SCI