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Method and system for extracting size information of welded component based on enveloping space

A technology of information extraction and welding parts, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low work efficiency and accuracy of welding parts, avoid errors and errors, improve work efficiency, and ensure The effect of accuracy

Active Publication Date: 2017-01-18
CISDI ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method and system for extracting size information of welded parts based on the envelope space to solve the problem of poor work efficiency and accuracy caused by manually obtaining the length, width and thickness of welded parts. low problem

Method used

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  • Method and system for extracting size information of welded component based on enveloping space
  • Method and system for extracting size information of welded component based on enveloping space
  • Method and system for extracting size information of welded component based on enveloping space

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Experimental program
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specific Embodiment approach

[0076] Mode 1, calculating the length of each side of the mapping surface, and selecting the side with the longest length as one side of the initial envelope configuration;

[0077] Select two sides from the remaining sides, and select a feature point on each of the two sides;

[0078] An initial envelope configuration of the weldment is formed by the side with the longest length and the selected two feature points;

[0079] Traversing all the feature points on each side of the mapping surface, and sequentially judging whether each feature point is included in the initial envelope configuration;

[0080] If the feature point is included in the initial envelope configuration, then keep the initial envelope configuration unchanged;

[0081] If the feature point is not included in the initial envelope configuration, then update the initial envelope configuration, and the updated initial envelope configuration includes the feature point;

[0082] The initial envelope configurati...

Embodiment 1

[0098] see image 3 , first determine the two opposite end faces A and B of the weldment according to the area of ​​each face of the weldment in three-dimensional space; and determine the distance between the two opposite end faces A and B as the thickness of the weldment;

[0099] Select any one of the two end faces, and map each side and the feature points on each side to a two-dimensional plane parallel to the selected end face to obtain a mapping surface L on the two-dimensional plane;

[0100] Calculate the length of each side of the mapping surface L, and select the side a with the longest length as one side of the initial envelope configuration;

[0101] Choose two sides b and c among the remaining sides (b, c, d), and choose a center point 1 on side b and a center point 2 on side c;

[0102] An initial envelope configuration of the weldment is formed by side a and the selected center point 1 and center point 2;

[0103] Traverse all the feature points (1, 2, 3, 4, 5,...

Embodiment 2

[0110] see Figure 4 , first determine the two opposite end faces A and B of the weldment according to the area of ​​each face of the weldment in three-dimensional space; and determine the distance between the two opposite end faces A and B as the thickness of the weldment;

[0111] Select any one of the two end faces, and map each side and the feature points on each side to a two-dimensional plane parallel to the selected end face to obtain a mapping surface L on the two-dimensional plane;

[0112] Calculate the length of each side of the mapping surface L and select the side a with the longest length;

[0113] All the feature points (1, 2, 3, 4, 5, 6, 7, 8) on the remaining sides are projected on side a, and the one-dimensional coordinates (x1, x, 2, x3) corresponding to each feature point are obtained. , x4, x5, x6, x7, x8) and the distance between each feature point and side a (L1, L2, L3, L4, L5, L6, L7, L8);

[0114]Sort the one-dimensional coordinates (x1, x, 2, x3, x...

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Abstract

The invention provides a method and a system for extracting size information of a welded component based on an enveloping space. The method comprises the following steps: determining two opposite end surfaces of a welded component according to the area of each surface of the welded component in a three-dimensional space, and determining the distance between the two opposite end surfaces as the thickness of the welded component; selecting any one of the two end surfaces, and mapping each side of the selected end surface and feature points on each side into a two-dimensional plane parallel to the selected end surface to obtain a mapping surface on the two-dimensional plane; according to the length of each side of the mapping surface and feature points on each side, determining a minimum orthogonal enveloping configuration of the welded component; according to the minimum orthogonal enveloping configuration of the welded component, determining the length and the width of the welded component, and determining the thickness, the length and the width of the welded component as the size information of the welded component. According to the embodiment of the invention, a size information extracting process has the characteristics of quickness, simplicity, accurateness and convenience, so that the efficiency and the accuracy of a 3D design are improved.

Description

technical field [0001] The invention relates to the field of computer-aided design and manufacturing, in particular to a method and system for extracting size information of welded parts based on envelope space. Background technique [0002] At present, 3D design has gradually become the main technical means of equipment design, which puts forward higher automation requirements for material statistics, but almost all 3D software ignores the requirements of Chinese drawing standards on the extraction of blanking dimensions from weldments For example, if the blanking size (length, width and thickness) of a weldment is 100mm, 60mm and 5mm respectively, it should be named "steel plate 100×60×5", so as to save the size information for subsequent engineering design, procurement cost control and Processing manufacturing calls. [0003] The existing 3D design technology can accurately determine the blanking size of the weldment, but the blanking size cannot be obtained automaticall...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20
Inventor 李盛贾鸿盛陈敏
Owner CISDI ENG CO LTD