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Single-layer multiple-pass weld stack deposition effect detection method and system

A multi-pass welding seam and detection method technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of relying on the effect of deposition, achieve the effect of improving the degree of automatic production and overcoming the high degree of complexity

Active Publication Date: 2019-12-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiency of relying on manual judgment of the deposition effect in the arc surfacing welding process in the prior art, the present invention provides a method and system for detecting the deposition effect of a single-layer multi-pass weld deposition

Method used

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  • Single-layer multiple-pass weld stack deposition effect detection method and system
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  • Single-layer multiple-pass weld stack deposition effect detection method and system

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Experimental program
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Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a single-layer multi-pass welding seam accumulation deposition effect detection method includes the following steps:

[0035] Step S1: collecting an image of the contour of the weld seam surface through a laser vision sensing system;

[0036] Step S2: Send the collected image of the contour of the weld surface to the host computer;

[0037] Step S3: The host computer will process the image and extract the pixel coordinates in the image;

[0038] Step S4: Convert the pixel coordinates to obtain the actual position of the outline, and generate world coordinates;

[0039] Step S5: extracting the characteristic parameters in the world coordinates;

[0040] Step S6: Calculating the deposition effect of the weld profile accumulation according to the characteristic parameters.

[0041] Preferably, the laser vision sensing system includes a laser emitter and a CMOS camera; the laser emitter and the CMOS camera are respectively connected to the hos...

Embodiment 2

[0048] Such as image 3 As shown, this embodiment provides a single-layer multi-pass weld accumulation deposition effect detection system, the system is based on the method described above, including a surfacing substrate 1 and a moving platform 2, the surfacing substrate 1 Installed on the motion platform 2, the system also includes a laser vision sensing system 3, a host computer 5 and a control cabinet of the motion platform 2; Connection; the motion platform 2 control cabinet is connected with the motion platform 2.

[0049] The laser vision sensing system 3 is fixed above the motion platform 2 to emit laser light and collect laser stripe images on the weld surface. Under the control of the motion platform 2 control cabinet, the motion platform 2 makes the surface to be tested of the weldment within the measurable range of the laser vision sensing system 3, and then the upper computer 5 controls the laser vision sensing system 3 to scan the weld surface , the laser visio...

Embodiment 3

[0053] Such as Figure 1 to Figure 5 As shown, the process flow of the deposition detection method for multi-weld accumulation is as follows figure 1 As shown, put the weldment to be tested on the motion platform 2, adjust the position of the motion platform 2, make the laser vision sensing system 3 collect and scan the weld seam contour, select multiple frames of images and extract the pixel coordinates of the laser stripes, after coordinate conversion Get the actual position of the weld contour, extract as figure 2 The characteristic points shown in the figure obtain the corresponding characteristic parameters, which are substituted into the calculation formula of the degree of deposition to obtain the degree of deposition, and finally compared with the value of 1 / 2, too large or too small is not the best deposition effect, the closer to 1 / 2, it means The better the deposition quality.

[0054] Figure 4 It is the physical picture of arc additive material, and the real c...

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Abstract

The invention relates to the field of arc additive manufacturing and more specifically relates to a single-layer multiple-pass weld stack deposition effect detection method and system. According to the method and the system, on the basis of a laser vision sensing technology, profile information of a tested surface is obtained; and through collection of a profile of a surface of a tested object, through utilization of related image processing algorithms and through combination of a formula for judging a deposition effect, a single-layer multiple-pass weld stack deposition effect is detected. According to the method and the system, the defects of high artificial detection complexity, low efficiency and liable influence of subjective factors are overcome. Through utilization of an advanced efficient vision detection technology, automatic production degree is greatly improved.

Description

technical field [0001] The present invention relates to the field of arc additive manufacturing, and more specifically, to a method and system for detecting the deposition effect of a single-layer multi-pass weld accumulation. Background technique [0002] Currently. In the field of arc additive manufacturing, the additive manufacturing technology of metal parts using arc as a heat source has the advantages of simple equipment, high material utilization rate, and high production efficiency. Arc surfacing is the use of welding rods or electrodes to deposit on the surface of the substrate for additive manufacturing. Due to various factors, the welding effect of the weld in the process of multi-channel single-layer accumulation will be affected by the deposition temperature, welding current voltage and protection. Influenced by gas flow, etc., there is a lack of detection and quantification methods for the forming and deposition effect of the arc additive manufacturing surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 高向东马波黄怡洁季玉坤
Owner GUANGDONG UNIV OF TECH
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