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Electron beam welding machine welding seam teaching and tracing method and system

A technology of electron beam welding and electron beam, which is applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of low precision and achieve the effect of avoiding damage

Active Publication Date: 2017-10-20
GUILIN THD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem of low precision existing in the existing method of locating the weld by human experience through the optical observation system, and provides a method and system for teaching and tracing of the weld seam of an electron beam welder

Method used

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  • Electron beam welding machine welding seam teaching and tracing method and system
  • Electron beam welding machine welding seam teaching and tracing method and system
  • Electron beam welding machine welding seam teaching and tracing method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] An electron beam welding machine welding seam teaching and tracing method based on table motion welding realized by the above system, such as image 3 shown, including the following steps:

[0076] Step 1: Preparation.

[0077] ① Place the weldment 11 in the vacuum working chamber 7 .

[0078] ②Close the studio door, and start the vacuum unit to pump the electron gun chamber 6 and the vacuum chamber 7.

[0079] ③Setting parameters: acceleration voltage U a Set according to working voltage requirements, generally rated voltage; teach electron beam current I b The value range is 0.01~1mA; the value range of the discrete detection moving distance δ is 0.01~0.1mm; the value range of the secondary electron signal threshold coefficient α is 0.2~0.5.

[0080] ④ After the vacuum conditions of the electron gun chamber 6 and the vacuum studio 7 are satisfied, select the working state of the table motion teaching and tracing, start the electron beam generator power supply 2, f...

Embodiment 2

[0091] An electron beam welding machine welding seam teaching and tracing method based on table motion welding realized by the above system, such as image 3 shown, including the following steps:

[0092] Step 1: Preparation.

[0093] ① Place the weldment 11 in the vacuum working chamber 7 .

[0094] ②Close the studio door, and start the vacuum unit to pump the electron gun chamber 6 and the vacuum chamber 7.

[0095] ③Setting parameters: acceleration voltage U a Set according to working voltage requirements, generally rated voltage; teach electron beam current I b The value range is 0.01~1mA; the value range of the discrete detection moving distance δ is 0.01~0.1mm; the value range of the secondary electron signal threshold coefficient α is 0.2~0.5.

[0096] ④ After the vacuum conditions of the electron gun chamber 6 and the vacuum studio 7 are satisfied, select the working state of the table motion teaching and tracing, start the electron beam generator power supply 2, f...

Embodiment 3

[0108] An electron beam welding machine welding seam teaching and tracing method based on electron beam swept welding realized by the above system, such as Figure 4 shown, including the following steps:

[0109] Step 1: Preparation.

[0110] ① Place the weldment 11 in the vacuum working chamber 7 .

[0111] ②Close the studio door, and start the vacuum unit to pump the electron gun chamber 6 and the vacuum chamber 7.

[0112] ③Setting parameters: acceleration voltage U a Set according to working voltage requirements, generally rated voltage; teach electron beam current I b The value range is 0.01 ~ 1mA; the discrete change step μ of the bias scan current is set to a minimum resolution value of 1 bias scan current digital setting; the value range of the secondary electron signal threshold coefficient β is 0.2 ~ 0.5.

[0113] ④ After the vacuum conditions of the electron gun chamber 6 and the vacuum studio 7 are satisfied, select the electron beam offset teaching and tracing...

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Abstract

The invention discloses a method and system for teaching tracing of a welding seam of an electron beam welding machine. By virtue of a moving working table or a deflection scanning power supply, an electron beam spot movement track intersects with a welding seam track; and when an electron beam spot falls on the welding seam, a secondary electronic signal value Ie apparently becomes smaller suddenly; a midpoint of a position coordinate corresponding to the area where the secondary electronic signal value Ie apparently becomes smaller suddenly is detected and regarded as a central line position of the cross section of the welding seam; and a feature point coordinate is positioned according to the principle. The method and the system disclosed by the invention can be used for quickly and accurately performing teaching tracing on the welding seam, so as to avoid the problem of low precision of a method for positioning the welding seam according to human experience.

Description

technical field [0001] The invention relates to the technical field of electron beam processing equipment, in particular to a welding seam teaching and tracing method and system of an electron beam welding machine. Background technique [0002] Electron beam welding machine is a kind of welding equipment with excellent performance, but this kind of equipment needs to work in a vacuum environment, which brings great inconvenience to the observation and monitoring of the welding process. At present, electron beam welding machines generally monitor the welding process through observation windows, cameras and other means. Although this optical observation system is intuitive and easy to operate, it has major defects in the precise teaching and tracing of the weld: [0003] 1. The parallax of the optical observation system is corrected by human experience, lacking quantifiable judgment parameters, and the subjective randomness is large. [0004] 2. The optical observation syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K15/06
CPCB23K15/0026B23K15/0053B23K15/06
Inventor 韦寿祺黄小东费翔秦玉江陆苇郭华艳王建辉梁祖明王宗坤唐强
Owner GUILIN THD TECH CO LTD
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