Unlock instant, AI-driven research and patent intelligence for your innovation.

A robot laser welding method and system

A technology of laser welding and robots, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of poor welding accuracy and achieve the effects of accurate positioning, fast calibration, and convenient positioning

Active Publication Date: 2019-08-16
浙江创新激光设备有限公司
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for different workpieces to be welded and welding environment factors, there is a certain error between the preset welding trajectory of the robot arm and the actual welding trajectory, resulting in poor welding accuracy.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A robot laser welding method and system
  • A robot laser welding method and system
  • A robot laser welding method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment one, such as figure 1 Shown, a kind of robot laser welding method, method comprises:

[0041] S1: if Figure 5 As shown, the laser spot is irradiated on the welding part of the workpiece by positioning the laser 1;

[0042] S2: if image 3 , Figure 4 and Figure 6 As shown, the scene below the lower outlet 10 is reflected to the acquisition camera arranged outside the welding head 2 through the obliquely arranged bandpass filter 4 that allows the laser beam emitted by the laser generator 3 to pass through but reflects other wavelengths in the welding head 2 At 5 places, the acquisition camera 5 collects the image comprising the laser point irradiated by the positioning laser 1 and transmits the image to the steering gear controller 6 connected with its signal;

[0043] S3: The steering gear controller 6 converts the image into a digital signal according to the pixel distribution and brightness information, and analyzes the reference welding start coordi...

Embodiment 2

[0051] Embodiment two, such as figure 2 , image 3 and Figure 6 As shown, a robot laser welding system, the system includes: a laser generator 3, used to generate a laser beam; optical fiber 9, the end of the optical fiber 9 is aligned with the optical path where the laser light emitted by the laser generator 3 is used to transmit the laser beam The laser emitted by the generator 3; the mechanical arm 7, including a base 13, a lower articulated arm 14, an upper articulated arm 15, three steering gears 8 and a steering gear controller 6. The end of the upper articulated arm 15 is fixed with a welding head 2 with a cylindrical cavity inside, and the end of the other end of the optical fiber 9 is coaxially installed on the upper entrance 16 of the cavity. The lower end outlet 10 of the shaft is obliquely provided with a bandpass filter 4 above the lower end outlet 10 in the cavity, and the side wall of the welding head 2 is provided with an image acquisition optical path faci...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a robot laser welding method and a system. The method comprises the steps of transmitting laser beam sent from a laser generator to a cavity of a welding head installed on a mechanical arm through optical fiber and ejecting out from the bottom outlet of the welding head, welding a workpiece below the bottom outlet through moving the welding head driven by the mechanical arm connected to a servo controller with a trace program preset, reflecting the scene below the bottom outlet to an acquisition camera arranged outside the welding head through bandpass filters which are arranged aslant in the welding head and permit the laser beam sent from the laser generator to pass but reflect other wavelengths, showing on a display connected to the acquisition camera through signals, calibrating the trace program of the mechanical arm according to the scene collected by the acquisition camera before welding of the welding head; the robot laser welding method disclosed by the invention has the advantages of easy calibration of the trace program of the mechanical arm, high welding accuracy, good welding effect and high welding efficiency.

Description

technical field [0001] The present invention relates to the field of welding technology, more specifically, it relates to a robot laser welding method and system. Background technique [0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the interior through heat conduction. By controlling the parameters such as the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied in the precision welding of micro and small parts. [0003] Chinese patent publication No. CN101032786 discloses laser welding equipment and methods for re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21B23K26/70B23K26/046B23K26/14
CPCB23K26/046B23K26/14B23K26/21B23K26/702
Inventor 彭学舟王奇丰陈兆春
Owner 浙江创新激光设备有限公司