Laser visual tracking system

Abstract

The invention discloses a laser visual tracking system, which mainly comprises an industrial personal computer, wherein a COM 1 (Component Object Model) port of the industrial personal computer is connected with an X axis motor and a Z axis motor through a motor control and drive circuit; output ends of the X-axis motor and the Z-axis motor are connected with a welding torque; the controller of the welding torque and a welding machine control circuit are connected with the industrial personal computer; the industrial personal computer is also connected with a laser sensor for acquiring information on the welding torque and a workpiece in real time and delivering the acquired information to the industrial personal computer; the laser sensor is a visual sensing module and mainly comprises a camera and a laser diode; the camera is vertically aligned with the workpiece; a laser is slantwise arranged and forms an angle of 30 degrees with the laser; laser emitted by the laser irradiates the workpiece to form a narrow light strip; after the light strip is reflected or refracted by the workpiece, the light strip enters the camera to image, and the image is transferred to the industrial personal computer for processing; after the image is analyzed and processed by the industrial personal computer, an action command is emitted to the welding torque, the X-axis motor and the Z-axis motor.

Description

technical field [0001] The invention relates to the technical fields of detection and machine vision, in particular to a laser vision tracking system which is applied in the automatic tracking of welding seams in the welding process and is suitable for the automatic tracking of various types of welding seams at present. Background technique [0002] At present, many automation equipments on the market use arc tracking and teaching reproduction robots. The arc tracking structure is simple, convenient and flexible, but it is suitable for butt welds without grooves (submerged arc welding often does not open grooves). Difficult to achieve alignment tracking. The teaching and reproducing tracking method can guarantee the welding quality under the condition that the welding conditions are basically stable. However, due to the influence of various factors, the actual welding conditions often change, resulting in a decline in welding quality or even failure. The key to seam tracki...

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Problems solved by technology

[0003] The purpose of this invention is to propose a welding tracking system with high tracking accuracy (<0.1mm), strong anti-interference ability, and suitable for various types of welds and different materials, which overcomes the small adaptability of the current sensor and the anti-interference The ability is weak, and the outline of the weld seam is not obvious and cannot be tracked when covering the surface

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