System and method for measuring curved surface

Abstract

The invention provides a curved surface measuring system, which includes a holding bench equipped with a cross laser measurement apparatus and a cross laser measurement apparatus moving along three axes; a controller for controlling movement of the cross laser measurement apparatus; a boundary following controller, which determines frontier surveying moving direction according to peak informationof the curved surface and the frontier surveying result of the curved surface; a frontier surveying data creater, which calculates the three-dimensional measuring data of the curved surface boundary by using a cross laser measurement apparatus outputted measuring value and a holding bench locating information; an inside path creater, which generates paths of the two shaft lines along the inside of the curved surface according to frontier surveying data of the curved surface; a inside height tracking controller, which judges a measuring movement direction according to an inside measuring path and an inner measurement result; an inside measuring data creater, which calculates a three-dimensional measuring data inside the curved surface by using the cross laser measurement apparatus outputted measuring value and the holding bench locating information; as well as a three-dimensional curve creater, which generates a three-dimensional shape data of a curved surface by using a frontier surveying data and an inside measuring data.

Description

technical field [0001] The present invention relates to measuring curved surfaces, and more particularly to a system and method for measuring curved surfaces using a cross-shaped laser beam. Background technique [0002] In order to reduce the propulsion resistance and sail efficiently, the outer plate of the ship is generally composed of 10-30 mm thick curved plate parts with complex non-developable curved surfaces. In order to form these curved outer plates, a treatment method called linear annealing is generally used, in which the surface of the steel plate is partially annealed using a gas burner or the like. The resulting plastic deformation including out-of-plane corner deformation or in-plane shrinkage can be used to process the steel plate into the desired shape. [0003] As mentioned earlier, for the composition of curved panel parts such as boats, it is necessary to measure whether the composition has been precisely processed into the desired shape. During the ma...

AI Technical Summary

Problems solved by technology

Thus, various factors such as ambient temperature and worker's negligence can lead to plastic deformation of curved panel parts, where these deviations can make accurate handling and measurement more difficult

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