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Multi-kind graphics output primitive mixed processing path optimization method

A technology of processing path and optimization method, applied in the direction of instrument, computer control, simulator, etc., can solve the problems of description, no non-closed and multi-type primitive mixed trajectory graphics path optimization and so on

Inactive Publication Date: 2016-11-16
GUANGDONG INST OF INTELLIGENT MFG
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Problems solved by technology

For the research on path optimization of planar closed contour trajectory, related algorithms include the shortest neighbor algorithm, ant colony algorithm combined with local search and genetic algorithm, but these studies have not explained the optimization of non-closed and multi-type primitive mixed trajectory graphics path

Method used

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  • Multi-kind graphics output primitive mixed processing path optimization method
  • Multi-kind graphics output primitive mixed processing path optimization method
  • Multi-kind graphics output primitive mixed processing path optimization method

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Embodiment Construction

[0053] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings.

[0054] In the present invention, in order to meet the compatibility and expansibility of CAM programming systems in different industries, the idea of ​​C++ object-oriented is adopted, and the dxf file reading class library is constructed based on the open source C++ library dxflib, which is widely used in various industries of numerical control processing. Among them, the dxflib library has high reliability and can realize the reading of dxf files on any operating system without any additional cost. The DXF file has a strict and standardized storage format, which consists of six parts: title segment, table segment, block segment, entity segment, object segment and file end segment, in which the geometric information of the processing graphics is defined in the entity segment, and an entity corresponds...

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Abstract

The invention discloses a multi-kind graphics output primitive mixed processing path optimization method. According to the method, DXF file graphics output primitive information is read, closed orbit segment figures and non-closed orbit segment figures that are formed by a single graphics output primitive or multiple graphics output primitives are subjected to sorting code number marking operation, different start points and nodes are chosen for different orbit segment figures, overall path ordering operation is performed via a genetic algorithm, local optimization searching start points are calculated according to orbit segment figure types, and therefore processing paths with minimum lengths can be obtained. The multi-kind graphics output primitive mixed processing path optimization method can be used for effectively solving a problem of multi-kind graphics output primitive mixed path optimization, and numerical control machine tool processing efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a method for optimizing mixed machining paths of multi-type graphics elements. Background technique [0002] In CNC machining operations, it is usually required that computer-aided manufacturing (CAM) software can read AutoCAD graphic data and convert it into machining G codes executed by the CNC machining system. Graphical interactive file (Drawinginterchange format, DXF) is a standard format file for the exchange of processing graphics data between AutoCAD and CAD / CAM programming system launched by Autodesk. However, the graphic elements in the DXF file are automatically saved according to the order in which the product designer draws the graphic elements, which has a certain degree of randomness and disorder. If the CAM system does not optimize the metadata of the read DXF file but directly generates the processing G code, it will cause the tool empty path...

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Application Information

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IPC IPC(8): G05B19/4097
CPCG05B19/4097G05B2219/31382
Inventor 雷欢吴亮生卢杏坚杨阳何峰周广兵王楠高小征马敬奇钟震宇
Owner GUANGDONG INST OF INTELLIGENT MFG
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