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Electric arc length measurement device and measurement method thereof

An arc length and measuring device technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of inaccurate arc length measurement results and inconvenience of direct measurement, achieve clear position information and scale information, and save measurement time. , the effect of easy extraction

Active Publication Date: 2019-02-01
BEIJING MECHANICAL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide an arc length measuring device and its method to solve the problems of inconvenient direct measurement of arc length and inaccurate measurement results in the prior art

Method used

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  • Electric arc length measurement device and measurement method thereof
  • Electric arc length measurement device and measurement method thereof
  • Electric arc length measurement device and measurement method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A specific embodiment of the present invention discloses an arc length measuring device, such as figure 1 As shown, including arc generating device, transparent tape scale device, high-speed camera. Wherein, the pellucida scale device is arranged on one side of the nozzle of the arc generating device when the image before welding is taken, parallel to the axis of the nozzle of the arc generating device, and the high-speed camera is arranged between the pellucida scale device and the The preset position opposite to the nozzle of the arc generating device. The layout position of the high-speed camera should be such that the nozzle of the arc generator and the scale device of the transparent tape are located within the viewing range of the high-speed camera.

[0064] The arc generating device is used to generate an arc at the nozzle through its electrodes after being energized.

[0065] Transparent tape graduated device for measuring the arc length of the arc generated b...

Embodiment 2

[0071] Optimizing on the basis of the above examples, such as figure 2 As shown, the arc generating device includes a welding power source 1 , cables 2 and 3 , and a welding torch 4 . In the figure, the position of the transparent band scale device 8 is only for illustration, and does not represent the real position, which should overlap with the welding gun 4 . The welding power supply 1 is connected to the welding torch 4 through the cable 2 and connected to the workpiece 5 through the cable 3 , and the nozzle 41 of the welding torch 4 is vertically arranged above the workpiece 5 to be processed.

[0072] The welding power source 1 is used to supply power to the electrode of the welding torch 4 and the workpiece 5 to be processed through the cables 2 and 3 . One output end of the welding power source 1 is connected to the electrode of the welding torch 4 through the cable 2, and the other output end of the welding power source 1 is connected to the workpiece to be processe...

Embodiment 3

[0084] Another specific embodiment of the present invention discloses a method for measuring arc length using the arc length measuring device described in Embodiment 2, such as Image 6 shown, including the following steps:

[0085] S1. Arrange the arc length measuring device, set the transparent belt scale device 8, the backlight source 7, turn on the backlight source 7, and adjust the brightness of the backlight source 7. Adjust the distance from the high-speed camera to the welding torch and from the backlight source to the welding torch, so that the high-speed camera, electrodes, and backlight source are on the same straight line.

[0086] S2. Adjust the shooting angle and aperture of the high-speed camera 9 .

[0087] S3. Collect the pre-welding image through the high-speed camera 9 .

[0088] S4. After the collection is completed, remove the backlight light source 7 and the transparent tape scale device 8, install the light-reducing film 10, and adjust the light intens...

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Abstract

The invention relates to an electric arc length measurement device and a measurement method thereof and belongs to the technical field of electric arc welding. Through the electric arc length measurement device and the measurement method thereof, the problems that the electric arc length cannot be measured directly and the measurement result is inaccurate in the prior art are solved. The electricarc length measurement device disclosed by the invention comprises an electric arc generation device, a transparent tape graduation device and a high-speed camera, wherein the transparent tape graduation device is arranged on one side of a nozzle of the electric arc generation device and is parallel to the axis of the electric arc generation device; the high-speed camera is arranged in the presetposition of the surface, opposite to the nozzle of the electric arc generation device, of the transparent tape graduation device. After being powered on, the electric arc generation device generates the electric arc at the nozzle through an electrode. The transparent tape graduation device is used for measuring the electric arc length. The electric arc length measurement device provided by the invention can directly measure the length of the electric arc and is little affected by electromagnetic interference, and the measurement result is accurate. According to the measurement result, an execution mechanism can be made to more stably control the electric arc length during welding, weld penetration is more uniform, and the defects of incomplete welding penetration and the like are avoided.

Description

technical field [0001] The invention relates to the technical field of arc welding, in particular to an arc length measuring device and a method thereof. Background technique [0002] Arc welding technology has a wide range of applications in modern manufacturing. In the arc welding process, the arc length (arc length for short) is a key parameter that affects the stability of the welding process and the welding quality. Changes in the arc length will cause uneven penetration of the weld, resulting in defects such as incomplete penetration. [0003] At present, the arc length measurement mainly adopts the indirect measurement method. The indirect measurement method is based on the basic theory of arc welding. The arc length is approximately proportional to the arc voltage. Therefore, the detection of the arc length can collect the arc voltage through the Hall sensor, and then convert the voltage signal from an analog signal to an analog signal through an analog-to-digital ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095
CPCB23K9/095
Inventor 王强
Owner BEIJING MECHANICAL EQUIP INST
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