On-line detection method for line heating forming

Abstract

The invention discloses an on-line detection method for line heat forming of a ship outer plate, and belongs to the field of shipbuilding technologies and optical measurement. The method comprises the following steps: A, establishing a ship theoretical model point cloud; B, scanning and obtaining a ship measurement point cloud; C, performing coordinate system registration for ship theoretical model point cloud and the ship measurement point cloud; D, calculating the distance between every point in the ship measurement point cloud and a theoretical curve surface so as to present the deviation between the measurement point cloud and the theoretical model point cloud; E, expressing the deviation value by a color map. Compared with a traditional sample case / sample plate detection method, the method is high in detection efficiency and precision, and the detection result can be quantized and is good in readability.

Description

technical field

[0001] The invention relates to an on-line detection method for bent plate forming, in particular to an on-line detection method in the water-fired plate bending process. It belongs to the field of shipbuilding technology and optical measurement. Background technique

[0002] Water-fire bending plate forming technology is a widely used plate forming process with strong technicality, great difficulty and many influencing factors in the world shipbuilding industry. How to quickly and accurately detect and judge the shape error between the processed hull curved plate and the target curved plate is a key technology that needs to be solved urgently in the shipbuilding industry.

[0003] At present, shipyards mainly rely on experienced workers to detect and judge the shape error between the processed hull curved plate and the target curved plate by clamping the sample plate and sample box. However, there are many disadvantages in this method: (1) The preci...

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