Method and device for generating flame path tracks of outer plates of ship hulls

Abstract

The invention discloses a method and a device for generating flame path tracks of outer plates of ship hulls. The method includes extracting frame lines of machining curved surfaces and target curvedsurfaces of the outer plates of the ship hulls and acquiring corresponding frame lines of the machining curved surfaces and the target curved surfaces; projecting each rib line to a two-dimensional plane and acquiring characteristic value sequences of each rib line projection curve; acquiring flame path key points on the rib line projection curves corresponding to the machining curved surfaces; inversely projecting the flame path key points on the rib line projection curves corresponding to the machining curved surfaces to the machining curved surfaces, and generating the flame path tracks ofthe outer plates of the ship hulls according to modes of extracting the frame lines of the machining curved surfaces and plate shapes of the target curved surfaces. The method and the device have theadvantages that flame path inference processes of workers are completely simulated in computers, and accordingly the flame path tracks can be inferred without complicated mathematical models or algorithms; the corresponding flame path tracks can be planned according to the complicated plate shapes such as sail shapes, saddle shapes and twisting shapes of the target curved surfaces of the outer plates of the ship hulls, and accordingly the applicability can be enhanced.

Description

technical field [0001] The invention relates to the field of ship shell plate processing, in particular to a method and device for generating flame path tracks of the ship shell plate. Background technique [0002] In the shipyard, for the complex hull plate, the forming process is generally realized through the thermal processing process of water and fire bending plate, but the deformation amount produced after each implementation of this processing process is related to the thickness of the plate, the trajectory of the flame path (heating path) ) distribution, gas type, gas flow rate, heating rate, cooling method and other factors, it is difficult to establish a mathematical model between deformation and processing parameters. Therefore, at present, the processing of complex hull plates is still carried out manually by experienced workers, which has problems such as low processing efficiency and unstable quality. Therefore, how to use computer technology to realize the au...

AI Technical Summary

Problems solved by technology

However, for the planning of flame path trajectory, although many methods have been proposed, such as surface expansion, support vector machine and angular deformation, etc., these methods have certain limitations and cannot be applied to the actual hull plate processing.

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