A method for acquiring automatic processing data of hull curved plate welding variable groove

Abstract

The invention discloses a method for quickly obtaining coordinate data of automatic heat cutting movement of a variable groove of a hull curve plate. By combining with the functions of a three-dimensional CAD (computer-aided design) system and a finite element mesh dividing software tool Hypermesh, the method specifically comprises the following steps of 1, importing a three-dimensional CAD model, and intercepting a rib and hull curve plate intersection curve model; 2, obtaining a three-dimensional model of the variable groove by a chamfer algorithm which is determined by distance and angle; 3, exporting the three-dimensonal CAD model as iges standard geometric template data; 4, importing the generated iges model into the Hypermesh, and dividing the meshes of the cutting curve of the variable groove by a quadrilateral mesh algorithm; 5, marking the cutting data mesh nodes of the variable groove; 6, outputting the mesh node data of the variable groove, programming and reading the curve mesh node data of the variable groove, and converting into the space movement coordinate data of automatic processing. The method has the beneficial effects that 1, the data obtaining process is simple, and the popularization is easy; 2, the artificial calculation is avoided, the obtaining speed of cutting coordinate data is high, and the efficiency is improved.

Description

technical field [0001] The invention relates to a welding process improvement for the bevel processing process of a hull curved plate, and more specifically relates to a method for obtaining numerical control parameters in the automatic processing process of variable bevels. Background technique [0002] In the variable groove processing of the hull curved plate, the traditional method mostly uses manual cutting. This method is difficult to control the follow-up angle and groove accuracy of the variable groove cutting, and the cutting workload is heavy and the working conditions are difficult. In order to replace manual work and realize automatic plasma thermal cutting with variable grooves, the key problem is to obtain the dynamic movement trajectory and pose coordinate data of the plasma cutting torch during the automatic processing of variable grooves. At present, the manual formula calculation method is mainly used. The calculation process is cumbersome and error-prone. ...

AI Technical Summary

Problems solved by technology

At present, the manual formula calculation method is mainly used. The calculation process is cumbersome and error-prone. Compared with the required data, the obtained cutting data has poor accuracy and low efficiency.

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