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Laser cutting method and equipment

A laser cutting and equipment technology, applied in laser welding equipment, welding equipment, metal processing equipment and other directions, can solve the problems of three-dimensional space error, reduce product quality, plane translation error, etc., achieve precise control and adjustment, real-time control and adjustment , to ensure the effect of precision

Inactive Publication Date: 2017-07-21
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the specific cutting process, the cut piece is cut manually or by another robot, which causes a three-dimensional error in the positioning of the workpiece; in addition, there will be a plane translation error, and Rotation error caused by uneven placement
If the cutting robot does not correct the three-dimensional space posture, but still cuts in the original processing path, when the product processing accuracy is high, the product quality will inevitably be reduced

Method used

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  • Laser cutting method and equipment
  • Laser cutting method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 of the present invention discloses a method of laser cutting, such as figure 1 shown, including:

[0051] Step 101, obtaining the three-dimensional shape data and the rotation and translation coordinates of the piece to be cut;

[0052] Step 102, adjusting the laser cutting device in real time according to the three-dimensional shape data and the rotation and translation coordinates;

[0053] Step 103, performing laser cutting on the workpiece to be cut based on the adjusted laser cutting device.

[0054] Specifically, in one embodiment, the "obtaining the three-dimensional shape data and the rotation and translation coordinates of the piece to be cut" described in step 101 includes:

[0055] Directly shoot the surface of the workpiece to be cut at a vertical angle through the linear laser emitting device;

[0056] Extract the laser linear modulation information on the surface of the workpiece to be cut through the area array binocular CCD / CMOS image senso...

Embodiment 2

[0066] In order to further illustrate the present invention, the present invention also proposes a specific laser cutting method based on a specific application environment.

[0067] Such as figure 2 As shown, it is a schematic diagram of a control scheme in this scheme; first, a binocular laser three-dimensional scanning imaging unit is constructed, which is mainly composed of a high-precision non-diffracting linear laser transmitter, a binocular area array CCD / CMOS image sensor, and a mechanical The scanning device is mainly used to complete the shape detection and rotation and translation coordinate extraction of the three-dimensional Cartesian space of the workpiece; in addition, it also includes a robot end tool coordinate correction method that combines three-dimensional scanning imaging and hybrid visual servo control. The translation and rotation coordinate values ​​provided by the test piece are combined with image-based and position-based visual servo control method...

Embodiment 3

[0081] Embodiment 3 of the present invention also discloses a laser cutting device, such as Image 6 shown, including:

[0082] An acquisition module 201, configured to acquire the three-dimensional shape data and the rotation and translation coordinates of the piece to be cut;

[0083] An adjustment module 202, configured to adjust the laser cutting device in real time according to the three-dimensional shape data and the rotation and translation coordinates;

[0084] The cutting module 203 is configured to perform laser cutting on the workpiece to be cut based on the adjusted laser cutting device.

[0085] In a specific embodiment, the acquiring module 201 is configured to:

[0086] Directly shoot the surface of the workpiece to be cut at a vertical angle through the linear laser emitting device;

[0087] Extract the laser linear modulation information on the surface of the workpiece to be cut through the area array binocular CCD / CMOS image sensor, and generate the three-...

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Abstract

The embodiment of the invention discloses a laser cutting method and equipment. The laser cutting method comprises the following steps of: obtaining three-dimensional morphological data and rotation and translation coordinates of a workpiece to be cut; adjusting a laser cutting device in real time according to the three-dimensional morphological data and the rotation and translation coordinates; and performing laser cutting on the workpiece to be cut based on the adjusted laser cutting device. Through the laser cutting method, real-time precise control and adjustment for the laser cutting device is realized, so that the subsequent cutting accuracy is guaranteed.

Description

technical field [0001] The invention relates to the field of hand-eye coordination visual servo control of industrial robots, in particular to a laser cutting method and equipment. Background technique [0002] In the prior art, in the field of real-time control of robots, visual servo control is an important research direction and one of the research hotspots for improving the intelligent level of robots. Among them, the visual servo control technology of industrial robots plays an important role in ensuring product quality and improving production efficiency. At present, the cutting processing of three-dimensional sheet metal parts and special profiles in the industries of automobile manufacturing, military industry and heavy industry is showing the development trend of multi-variety, small batch and high precision. Its specific problems are as follows: [0003] In the specific cutting process, the cut piece is cut manually or by another robot, which causes a three-dimen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/38B23K26/70
CPCB23K26/38B23K26/70
Inventor 赵立明陈婧张毅徐晓东王博宇叶川
Owner CHONGQING UNIV OF POSTS & TELECOMM
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