Laser measurement marking-off cutting method for big-width plate

A laser measurement and cutting method technology, applied in the field of plate processing, can solve the problems of poor precision and low efficiency of manual line drawing, and achieve the effect of high precision, great expansion potential and not easy to wear

Inactive Publication Date: 2012-07-04
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of poor accuracy and low efficiency of manual line drawing, the object of the present invention is to provide a method for laser measurement and line drawing cutting of large panels

Method used

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  • Laser measurement marking-off cutting method for big-width plate
  • Laser measurement marking-off cutting method for big-width plate
  • Laser measurement marking-off cutting method for big-width plate

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] The specific steps of the laser measuring and drawing line cutting method of the present invention are:

[0031] A. Hoist the workpiece to be cut on the workbench, use the camera installed on the five-axis gantry type measuring line cutting machine to scan the surface of the workpiece, and obtain a series of coordinate data of the surface feature points of the workpiece. The camera follows the five-axis gantry type The measuring and drawing line cutting machine has three degrees of freedom of movement in X, Y and Z directions;

[0032] B. Use the M file written by MATLAB software to perform differential compensation operation on the obtained feature point coordinate data to fit the workpiece outline, and compare the fitted outline with the theoretical model;

[0033] C. Determine the transformation relationship between the machine tool coordinate syst...

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Abstract

The invention relates to a plate processing method, in particular to a laser measurement marking-off cutting method for a big-width plate. The method comprises the following steps of: suspending a workpiece to be cut onto a workbench; scanning the workpiece by using a camera arranged on a five-axis gantry measurement marking-off cutter to obtain coordinates of the surface characteristics of the workpiece; performing difference compensation fitting by using control software to obtain the profile surface of the workpiece; performing data comparison between the profile surface and an ideal model; automatically generating a marking-off locus; conveying the marking-off locus to the five-axis gantry measurement marking-off cutter; starting laser marking-off; conveying the path coordinates of the laser marking-off to a cutter; and after laser marking-off is completed, cutting according to the laser marking-off locus by using the cutter. Due to the adoption of the method disclosed by the invention, three-dimensional processing can be realized, the data characteristics of a three-dimensional surface are acquired automatically, a processing path is generated automatically, high measuring accuracy, high stability, high speed and high consistence are achieved, and a marking-off product is closer to an ideal curved surface.

Description

technical field [0001] The invention relates to a plate processing method, in particular to a laser measuring and line-drawing cutting method for a large plate. Background technique [0002] As modern manufacturing industries such as aviation, ships, automobiles, nuclear power and other fields are pursuing new structural integration designs, more and more large-scale structural parts have appeared in new structural designs. With the continuous increase of the size of the structural parts and the increase of the complexity of the curved surface, it is required to draw lines on the surface of the plate in advance when blanking the plate to ensure the accuracy of the blanking size of the plate. At present, the method of manual line drawing is mainly used for sheet blanking. Manual line drawing is not only low in production efficiency, but also difficult to guarantee the accuracy and clarity of line drawing. Especially for large-format three-dimensional cutting processing, manua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K7/00B23K7/10
Inventor 甘洪岩徐志刚昌成刚刘勇
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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