Honeycomb core surface shape measuring method

A measuring method and technology of honeycomb core, which can be applied to measuring devices, instruments, and optical devices, etc., can solve the problem that the specific surface shape of honeycomb core materials cannot be obtained, and achieve the effects of rich information, convenient operation and high precision.

Active Publication Date: 2016-10-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

This patent provides a method for measuring the flatness of the honeycomb core as a whole, but cannot obtain the specific surface shape of the honeycomb core material

Method used

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  • Honeycomb core surface shape measuring method

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Embodiment Construction

[0022] like figure 1 Shown, a kind of measuring method of honeycomb core surface shape, comprises the steps:

[0023] ① Attach a reflective film 2 on the surface to be tested of the honeycomb core 3, and make the reflective film 2 close to the surface to be tested of the honeycomb core 3 by means of vacuum adsorption, and make the reflective film 2 at the honeycomb cell be depressed downward, so The measured data will have a peak at the honeycomb wall, and the measured value minus the thickness of the reflective film 2 is the height of the honeycomb wall at this location.

[0024] ② Scanning and measuring the reflective film 2 on the surface of the honeycomb core 3 to be measured to obtain the height of the honeycomb wall of the honeycomb core 3 at different spatial positions.

[0025] In step ①, use the breathable double-sided adhesive 4 to fix the honeycomb core 3 on the cork 7, and use the air permeability of the cork 7 to absorb through the cork 7 and the breathable doubl...

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Abstract

The invention discloses a honeycomb core surface shape measuring method, which is characterized by comprising the steps of: coating a reflective film on a surface to be measured of a honeycomb core, and adopting a vacuum adsorption method so that reflecting film is closely adhered to the surface to be measured of the honeycomb core and the reflecting film at honeycomb hole lattices is recessed downwards; and carrying out scanning measurement on the reflecting film on the surface to be measured of the honeycomb core to obtain honeycomb wall heights of the honeycomb core at different spatial positions. The honeycomb core surface shape measuring method has the advantages of being high in measurement precision, low in usage cost, high in measurement efficiency, good in applicability, rich in acquired information and capable of realizing in-suit measurement.

Description

technical field [0001] The invention relates to a method for measuring the surface shape of a workpiece, in particular to a method for measuring the surface shape of a honeycomb core. Background technique [0002] At present, honeycomb cores are widely used in the field of aerospace, mainly for the preparation of honeycomb sandwich structures. The manufacturing process includes: firstly processing the upper and lower surfaces of the honeycomb core member to the designed complex curved shape, and then bonding it with a preformed layer of thin plates (usually carbon fiber composite plates) with opposite curved shapes. The processing accuracy of the curved surface of the honeycomb core determines the reliability of its bonding with the upper and lower sheets, which in turn affects the performance of the entire sandwich structure. Therefore, before bonding after processing, the processing accuracy of the complex curved surface of the honeycomb core must be tested, and the compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01B11/16
CPCG01B11/16G01B11/24
Inventor 董志刚康仁科朱祥龙秦炎王毅丹
Owner DALIAN UNIV OF TECH
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