Curved surface auxiliary measuring device and curved surface coordinate system determining method for symmetrical double-curvature panels

An auxiliary measurement and double curvature technology, applied in the direction of measuring devices, instruments, etc., can solve the problems of cumbersome determination of the coordinate system and large amount of calculation, and achieve the effect of small geometric size and simple operation

Active Publication Date: 2015-12-09
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a curved surface auxiliary measuring device and a method for determining a curved surface coordinate system for a symmetrical double curvature

Method used

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  • Curved surface auxiliary measuring device and curved surface coordinate system determining method for symmetrical double-curvature panels

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specific Embodiment approach 1

[0012] Specific implementation mode one: combine figure 1 Describe this embodiment, the device of this embodiment includes a base 1, two first fixed seats 2, two second fixed seats 3, two bosses 4 and four bolts 5, the upper and lower end surfaces of the base 1 are kept parallel, The intersecting side walls of the base 1 are respectively equipped with first fixing seats 2, and the remaining two side walls of the base 1 are respectively provided with bosses 4, and each boss 4 is provided with two internally threaded holes 4 -1, one end of each bolt 5 passes through the internally threaded hole 4-1 and is fixedly connected to the second fixing seat 3.

specific Embodiment approach 2

[0013] Specific implementation mode two: combination figure 1 To describe this embodiment, the cross-sectional shape of the first fixing seat 2 and the second fixing seat 3 in this embodiment is L-shaped, and this structure is convenient for manufacture. Other implementation manners are the same as the specific implementation manner 1.

specific Embodiment approach 3

[0014] Specific implementation mode three: combination figure 1 This embodiment is described. In this embodiment, the two first fixing bases 2 are fixedly connected and the angle between them is 90°. This structure is easy to operate during use. Other implementation manners are the same as the specific implementation manner 1.

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Abstract

A curved surface auxiliary measuring device and a curved surface coordinate system determining method for symmetrical double-curvature panels relate to the field of aviation and aerospace manufacturing machinery. The device and the method are provided to solve the problem that the existing curved surface auxiliary measuring device and the coordinate system determining method are complex and need large amount of calculation. According to the technical scheme, the upper and lower end faces of a base are kept parallel to each other, two intersecting side walls on the base are respectively equipped with a first fixed seat, the remaining two side walls on the base are respectively equipped with a boss, each boss is provided with two internal threaded holes, and one end of each bolt is fixedly connected to a second fixed seat after passing through the corresponding internal threaded hole. The method comprises the following steps: step 1, putting and fixing a curved piece in the device; step 2, acquiring point cloud data; and step 3, establishing a coordinate system, and using Imageware software to process the point cloud data. The curved surface auxiliary measuring device and the curved surface coordinate system determining method of the invention are used in auxiliary measurement of the curved surface of a symmetric double-curvature panel.

Description

technical field [0001] The invention relates to a curved surface auxiliary measuring device and a curved surface coordinate system determination method for a symmetrical double-curvature plate, and relates to the field of aerospace manufacturing machinery. Background technique [0002] Double-curvature parts are mostly used in the aerospace industry, such as aircraft skins, double-curvature panels, etc., and also occupy a certain proportion in the civilian field. The radius of curvature of double-curvature parts changes in different directions, so their complex geometric profiles increase the difficulty of measurement. Sheet metal will rebound after bending, and springback is a key factor affecting the forming accuracy of sheet metal parts. In order to quantitatively study the springback, it is necessary to establish the center of symmetry of the surface part, and set the point to keep its position before and after the springback. A coordinate system can be established bas...

Claims

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Application Information

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IPC IPC(8): G01B21/20G01B21/00
Inventor 宗影影刘坡单德彬郭斌
Owner HARBIN INST OF TECH
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