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Pipeline digital reconstruction method based on accurate measurement

An accurate measurement and pipeline technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of unguaranteed product qualification rate, cumbersome sampling process, low manufacturing accuracy, etc., to shorten the production cycle, experience The effect of low requirements and high pass rate

Pending Publication Date: 2021-02-23
BEIJING INST OF ASTRONAUTICAL SYST ENG
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Problems solved by technology

This production mode has high requirements on the technical level and experience of the operators themselves, and the sampling process is cumbersome, the manufacturing precision is low, and the product qualification rate cannot be guaranteed

Method used

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  • Pipeline digital reconstruction method based on accurate measurement
  • Pipeline digital reconstruction method based on accurate measurement
  • Pipeline digital reconstruction method based on accurate measurement

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Experimental program
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Effect test

Embodiment

[0044] A pipeline digital reconstruction method based on accurate measurement, the method steps comprising:

[0045] The first step is to use laser scanning equipment to perform three-dimensional scanning of the flanges, clamps and external system interfaces involved in pipeline installation to obtain the point cloud model of the physical objects.

[0046] Taking a certain type of liquid oxygen exhaust pipe as an example, when laser scanning the constraint boundary of the pipeline, the constraint boundary to be scanned includes the pipeline inlet (that is, the valve outlet boundary), the exhaust outlet of the arrow wall, the position of the clamp and the storage area. The bottom surface of the box. The obtained physical point cloud model is as follows: figure 1 shown;.

[0047] In the second step, the point cloud model of the physical object obtained in the first step is imported into the 3D design software geomagicdesign X, and the key control elements (such as bending info...

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Abstract

The invention relates to a pipeline digital reconstruction method based on accurate measurement, in particular to a design method for achieving pipeline digital reconstruction based on accurate measurement of butt joints and boundaries. The method provided by the invention is suitable for pipeline products with different specifications, and has strong adaptability to complex and diverse pipeline production boundaries. Compared with a traditional manual aluminum wire sampling method, the pipeline digital reconstruction design method has the advantages that the product precision can be effectively improved, the product production period is shortened, and the requirement for experience of operators is relatively low. Meanwhile, the percent of pass of pipeline products produced through the pipeline digital reconstruction design method is high, the probability that the pipelines are scrapped due to too large sampling deviation is reduced, and the production cost can be reduced.

Description

technical field [0001] The invention relates to a pipeline digital reconstruction method based on accurate measurement, in particular to a design method based on precise measurement of interfaces and boundaries to realize pipeline digital reconstruction. Background technique [0002] Currently, pipeline product manufacturing is divided into two parts: prefabricated catheters and sampling catheters. The prefabricated conduit is a pipeline product pre-manufactured before the final assembly of the whole arrow through the theoretical three-dimensional model. It is a manufacturing mode parallel to the final assembly, and the production efficiency is high; Due to the deviation of the system interface and the limited compensation ability of the pipeline, the production of the theoretical 3D model data may not be able to achieve the final assembly. It is necessary to use the actual boundary parameters of the rocket body as the basis for the production of the pipeline products in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F113/14
CPCG06F30/17G06F2113/14
Inventor 税晓菊刘艳吴云峰张萌李林丁建春贺启林曹文利周冠宇任京涛武园浩石佳张翼穆俊宇吴立夫李丁丁
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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