A connectivity detection method for an aircraft template laser cutting programming graphics

A connectivity inspection and laser cutting technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of inaccurate inspection results, far different performance, poor graphics quality, etc., and achieve a leap in processing speed , the result is accurate, the effect of improving the speed

Active Publication Date: 2016-04-27
SHENYANG AIRCRAFT CORP
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AI Technical Summary

Problems solved by technology

However, for most parts such as wall panels and frames with large size, large curvature and complex shape, the graphics quality of the inclined edges, rounded corners, curved structures, etc. Location, such as breaks, overlaps, excess threads, misplaced ends, etc.
The graphics processing program SYLBDxfProcess currently used in the industry provides the function of checking connectivity to try to solve this kind of problem, but this program can only check one chain at a time (such as image 3 ), and the operation is slow, it takes dozens or even hundreds of operations to complete the connectivity check of a complex part, the check result is not accurate, and the performance is far from the actual demand

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  • A connectivity detection method for an aircraft template laser cutting programming graphics
  • A connectivity detection method for an aircraft template laser cutting programming graphics
  • A connectivity detection method for an aircraft template laser cutting programming graphics

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Embodiment Construction

[0026] The method for checking the connectivity of programming graphics for laser cutting of aircraft templates is implemented as follows:

[0027] (1) First obtain all elements in the CAD two-dimensional graphics, and decompose the combined elements;

[0028] (2) Then the program-based AutomaticChain command starts from the first element in the search range, recursively searches for the elements associated with it, moves the found elements out of the search range and marks them; AutomaticChain quickly finds out in the graph all closed contours;

[0029] (3) Finally, the judgment of connectivity is realized based on the Chain command of the program, and the judgment result is displayed; Chain is to judge where the outline of the selected element is broken (or closed);

[0030] (4) Repeat steps (2) and (3) until there are no more elements in the search range.

[0031] The step (1) obtains the selected graphic elements, and decomposes the combined elements: prompt the user to ...

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Abstract

The invention provides a connectivity detection method for an aircraft template laser cutting programming graphics. A program for implementing the method is developed based on ObjecARX(VC). The method comprises the steps of firstly acquiring all elements in a CAD two-dimensional graphic and decomposing composite elements therein; starting with the first element in a search scope and searching for elements related thereto recursively, and moving the found elements out of the search scope and performing marking; finally realizing connectivity judgment. The method can judge whether an outline is closed rapidly and accurately, the judging results being consistent with the results obtained by a main stream laser programming program used in the industry; for non-closed outlines, the method can show disconnection positions. The invention provides the rapid and reliable solution for connectivity detection of aircraft template laser cutting programming graphics and lays a powerful foundation for the automatic processing of the aircraft template laser cutting programming graphics.

Description

technical field [0001] The invention relates to a connectivity checking method for laser cutting programming graphics of an aircraft model, and belongs to the technical field of aircraft digital manufacturing. Background technique [0002] Aircraft model is a kind of rigid measuring tool made of certain features of aircraft parts, groups and parts at a ratio of 1:1 and with process information. It is simple to manufacture, low in cost, and easy to use. a wide range of applications. To manufacture an aircraft model, it is necessary to convert the part features to be expressed into two-dimensional graphics in the three-dimensional digital model, and then import the two-dimensional graphics into a special laser programming program to automatically generate a cutting program after a series of processing. For areas such as template outlines, through holes, and viewports, it is necessary to ensure that their graphics are connected in laser programming (such as figure 1 ). Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/392
Inventor 张向良张鑫张云鹏李向春冯亮亮
Owner SHENYANG AIRCRAFT CORP
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