A Measuring Method of Prefabricated Body Conformity

A measurement method and prefabricated body technology, applied in the direction of measuring devices, mechanical measuring devices, instruments, etc., can solve the problems of large mold size, heavy weight, difficult to apply to X-ray, CT scanning, etc., to achieve accurate results and avoid measurement The effect of error and quick test process

Active Publication Date: 2022-03-15
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, X-ray, CT scanning and other methods can be used to measure the moldability of prefabricated bodies, but professional equipment and personnel are required. Most companies do not have such equipment conditions. In addition, molds are generally steel moulds, especially for large prefabricated bodies. Large in size and heavy in weight, it is difficult to apply to X-ray and CT scans

Method used

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  • A Measuring Method of Prefabricated Body Conformity
  • A Measuring Method of Prefabricated Body Conformity
  • A Measuring Method of Prefabricated Body Conformity

Examples

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Embodiment 1

[0041] Such as image 3 As shown, embodiment 1: measurement of curved surface prefabricated body

[0042] The preform 1 has a length of 500 mm, positive and negative curvatures, and a preform thickness of 20 mm. According to the requirements of the prefabricated body 1, 8 measuring points are selected, and the measuring points are respectively located at the inflection points of the positive and negative curvatures of the prefabricated body 1.

[0043] The measurement method of prefabricated body-fitting moldability includes the following steps:

[0044] (1) Prepare the mold 2 according to the measurement requirements of the prefabricated body; during the mold processing, according to the 8 measurement points of the prefabricated body 1 on the mold 2, mark 8 reserved positions every 100mm from the end face of the mold 100mm (corresponding to the prefabricated 8 measurement points of body 1);

[0045] (2) Install sheet-type pressure sensors at each reserved position, and mak...

Embodiment 2

[0048] Such as Figure 4 As shown, embodiment 2: measurement of prefabricated body of rotary body

[0049] The height of the prefabricated part is 428mm, the diameter of the large end is 320mm, the diameter of the small end is 220mm, and the thickness of the prefabricated part is 18mm. According to the requirements of the prefabricated body, 10 measurement points are selected, and the 10 measurement points are located on the same circle. The measurement points are 36° apart.

[0050] Including the following steps:

[0051] (1) According to the measurement requirements of the prefabricated part, prepare the mold 2; when the mold is processed, mark 10 reserved positions on average (corresponding to 10 measurement points of the prefabricated body) at a height of 220 mm from the large end face of the mold;

[0052] (2) Install a sheet pressure sensor at each reserved position, and mark the position as i=1, 2, 3...10; the signal end cables 5 of the sheet pressure sensor are all c...

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Abstract

The invention discloses a method for measuring mold-fitting properties of a prefabricated body, which comprises step 1) preparing a mold according to the shape of the prefabricated body, and setting reserved positions on the mold; step 2) installing contact pressure sensors on the reserved positions; and step 3) prefabricating Body-fitting mold assembly; step 4) record the pressure value F of all measurement points on the prefabricated body i ; Step 5) set the standard pressure value to be F when sticking the mold, then the deviation value D is 0, analyze the relationship between the pressure value Fi and the deviation value Di, Di=(F-Fi) / k, wherein k is the spring coefficient; 6) According to the deviation range requirements of the product surface requirements, evaluate the moldability of the prefabricated body. This method, by arranging a contact sensing device on the mold, can sense the contact condition of the prefabricated body when it is molded, and feed back its moldability and deviation value in the form of force. It is a non-destructive testing method that will not damage the prefabricated body. .

Description

technical field [0001] The invention belongs to a method for detecting the quality of a prefabricated body for composite materials, and in particular relates to a method for measuring the mold-fitting property of a prefabricated body, which is used for detecting the mold-fitting property of the prefabricated body and judging the profiling accuracy of the prefabricated body. Background technique [0002] At present, X-ray, CT scanning and other methods can be used to measure the moldability of prefabricated bodies, but professional equipment and personnel are required. Most companies do not have such equipment conditions. In addition, molds are generally steel moulds, especially for large prefabricated bodies. Large in size and heavy in weight, it is difficult to apply to X-ray and CT scanning methods. In most cases, the moldability measurement is not carried out after the preform is molded, especially for large and complex special-shaped closed cavities. The later compoundin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/00G01B5/00
CPCG01N19/00G01B5/00
Inventor 刘延友陈建剑程海霞乔志炜王浩
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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