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A Magnetic Strain Welding Oscillator with Seam Tracking Function

A technology with magneto-induced strain and tracking function, applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of poor real-time and controllability, large mechanical wear, short service life, etc., to ensure accuracy and stability , The effect of small mechanical wear and long service life

Active Publication Date: 2018-02-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings of existing welding robots, further improve welding efficiency and ensure welding quality, and promote the development of welding in the direction of intelligence, the present invention aims at the current welding oscillator with complex structure, large mechanical wear, low response frequency, short service life, Due to technical problems such as unstable tracking, poor real-time performance and controllability, a magnetically induced strain welding oscillator with seam tracking function is proposed

Method used

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  • A Magnetic Strain Welding Oscillator with Seam Tracking Function
  • A Magnetic Strain Welding Oscillator with Seam Tracking Function
  • A Magnetic Strain Welding Oscillator with Seam Tracking Function

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1, choose NiMnGa series single crystal shape memory alloy, make L 0 *L 0 *L 1The cuboid magnetically controlled shape memory alloy guide rod (9), the right end of the magnetically controlled shape memory alloy guide rod (9) is fixed on the right magnetic pole (7) of the No. 1 U-shaped magnetic core (3) through the fixed valve (8), ensuring that the magnetic The right end surface of the control shape memory alloy guide rod (9) is relatively parallel to the plane of the right magnetic pole (7) of the No. 1 U-shaped magnetic core (3), so that the magnetic control shape memory alloy guide rod (9) is perpendicular to the longitudinal magnetic field lines, and the magnetic The left end of the control shape memory alloy guide rod (9) is fixedly connected with the right end of the non-ferromagnetic push rod (11), and the excitation power supply generates an excitation current according to the control parameters of the seam tracking controller, and the excitation cur...

Embodiment 2

[0035] Embodiment 2, in welding process, as image 3 , the current signal of the arc collected by the Hall sensor is filtered and amplified, and then sent to the seam tracking controller. The seam tracking controller processes and calculates it, and compares the collected current signal with the given current signal. , to determine whether there is a deviation between the welding torch and the welding seam; when there is a deviation in the left and right direction between the welding torch and the welding seam, increase the welding current, and at the same time increase the longitudinal excitation current by controlling the excitation power supply, so that the swing amplitude of the magneto-induced strain welding swing mechanism Increase, the width of weld deposition increases to ensure the depth of weld penetration, and the cross carriage moves synchronously to adjust left and right to keep the welding torch in a centered state; when the welding torch is relatively high relati...

Embodiment 3

[0036] In embodiment 3, the martensitic transformation temperature of NiMnGa series single crystal shape memory alloy is selected as 31°C, and the optimum working temperature range is 20-40°C. When the temperature detected by the real-time temperature detector is lower than 31°C, the weld seam tracking controller does not work according to the temperature parameter fed back; when the temperature detected by the real-time temperature detector is 31-40°C, the weld seam tracking The controller adaptively adjusts the power of the radiator according to the feedback temperature parameters to ensure that the magnetically controlled shape memory alloy guide rod works near the martensitic transformation temperature (31°C); when the temperature detected by the real-time temperature detector is higher than 40°C ℃, according to the temperature parameter fed back by the seam tracking controller, because the magnetic strain of the magnetic control shape memory alloy is no longer proportional...

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Abstract

The invention discloses a magnetic-field-induced strain welding oscillator with a welding tracking function, and belongs to a welding robot automatic control device. The magnetic-field-induced strain welding oscillator is mainly used for solving the technical problems that an existing welding oscillator is complex in structure, large in mechanical wear, low in response frequency, unstable in tracking, poor in instantaneity and controllability and the like. According to the technical scheme, the magnetic-field-induced strain welding oscillator is characterized by comprising a Hall sensor, a seam tracking controller, an excitation source and a magnetic-field-induced strain welding oscillation mechanism; in the welding process, the seam tracking controller further forms a magnetic field by controlling the excitation source according to current signals of electric arcs collected by the Hall sensor, and the magnetic-field-induced strain welding oscillation mechanism conducts real-time correction on seam tracking in cooperation with a cross-shaped sliding support by automatically adjusting the oscillation frequency and the oscillation range under the effect of the magnetic field, and automatic seam tracking is completed. The magnetic-field-induced strain welding oscillator is mainly applied to the welding automation field.

Description

technical field [0001] The invention relates to an automatic control device for a welding robot, which belongs to the field of welding automation, in particular to a magnetically induced strain welding oscillator with a welding seam tracking function. Background technique [0002] At present, with the rapid development of welding automation, in order to ensure welding quality, improve welding efficiency, and further improve the welding environment, welding oscillators are more and more widely used in the field of welding robots, especially welding oscillators with weld seam tracking function. Promoting the development of welding in the direction of intelligence, however, the welding oscillators currently used in welding production workshops not only have complex structures, large mechanical wear, low response frequency, short service life, but also unstable tracking, poor real-time performance and controllability, etc. , making the development of welding automation stagnate;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K7/10B23K37/02
CPCB23K7/102B23K37/0252
Inventor 洪波钟勇杨鹏昊唐明
Owner XIANGTAN UNIV
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