Measuring method of flatness of honeycomb cores of combined frame structures

A measurement method and frame structure technology, applied in the field of measurement, can solve problems such as lack of honeycomb core flatness measurement method

Inactive Publication Date: 2014-02-05
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a detection method suitable for the flatness of the honeycomb core of the combined frame structure, solve the problem of lack of the flatness measurement method of the honeycomb core, improve the parameter evaluation index of the combined frame honeycomb core structure, and meet the performance evaluation requirements

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  • Measuring method of flatness of honeycomb cores of combined frame structures
  • Measuring method of flatness of honeycomb cores of combined frame structures
  • Measuring method of flatness of honeycomb cores of combined frame structures

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[0021] The method for preparing the micro-arc oxidation film layer with photocatalytic function provided by the present invention is specifically realized through the following steps:

[0022] The first step is to measure the flatness, choose two gauge blocks of the same size as the reference gauge block, and then select gauge blocks of different sizes to test the plug, when the gauge block of the test plug just passes through, record the test plug gauge value. See Figure 4 Figure 5 .

[0023] The second step is data processing to calculate the flatness of the small honeycomb core.

[0024] The calculation first takes the value of one of the diagonals as a benchmark, and converts the value of the other diagonal. Equalize the values ​​at both ends of each diagonal line. After the two diagonal lines are respectively contoured, find the maximum value and subtract the minimum value from all the measured data to obtain the flatness of the honeycomb core. See the attached Fi...

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Abstract

The invention belongs to the field of measuring technique, and relates to a measuring method of flatness of honeycomb cores of combined frame structures. A high-accuracy knife straight edge and a set of measuring blocks with a third or higher accuracy class are used, a height difference computational method is combined, and therefore measurement of the flatness of the honeycomb cores is completed. The measuring method has the advantages that the problem that a gradienter or a reflector cannot be used for measuring the flatness of the honeycomb cores because thicknesses of foil sheets are too small, measured values are obtained by using the knife straight edge and the measuring blocks in a combined measuring method, and the measuring method fills gaps in detection methods of the flatness of the honeycomb cores.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a method for measuring the planarity of a composite frame structure honeycomb core. Background technique [0002] The typical structure of composite frame structure honeycomb core is as follows: figure 1 As shown, it is necessary to measure the flatness of a single honeycomb core, and at the same time measure the flatness of the combined honeycomb core; and the current detection requirements for the size, shape and location of the honeycomb core only involve thickness, core There are no corresponding methods for the requirements and methods for the detection of honeycomb core flatness. At the same time, since the thickness of the honeycomb core foil is usually only less than 0.1 mm, and the frame structure on both sides is higher than the plane of the honeycomb core, the usual flatness measurement method cannot be realized. Contents of the invention [0003] T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/28
Inventor 李昂彭艳芳刘涛张昱
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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