Resistance spot-welding control method and system free of parameter setting

A technology of resistance spot welding and control method, which is applied in resistance welding equipment, resistance electrode base, welding power supply, etc., can solve the problems of consuming a lot of manpower and material resources, and achieve the effects of reducing the number of scrapped parts, shortening the development cycle, and reducing costs

Active Publication Date: 2018-03-02
天津七所高科技有限公司
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Problems solved by technology

At the same time, it is necessary to conduct destructive inspections on the welded parts in order to ...

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  • Resistance spot-welding control method and system free of parameter setting
  • Resistance spot-welding control method and system free of parameter setting
  • Resistance spot-welding control method and system free of parameter setting

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Embodiment Construction

[0030] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] The present invention is an intermediate frequency inverter resistance spot welding system without parameter setting, including a servo pressurized welding tongs system and a spot welding control system,

[0033] Such as Figure 4 As shown, the servo pressurized welding tongs system includes a welding tongs main body and an intermediate frequency transformer installed thereon, a spot welding servo pressurized system, and an ultrasonic system. The welding tongs main body includes a mounting bracket 1, a welding arm 7, and a main electrode seat 9 and the electrode arm 8, one end of the mounting bracket 1 is equipped with the welding arm 7, and the upper two ends of the welding arm ...

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Abstract

The invention provides a resistance spot-welding control method and system free of parameter setting. The resistance spot-welding control method comprises the following steps that (1) the thickness ofa welded workpiece is measured through an ultrasonic wave device mounted at the front end of welding tongs; (2) a short-time small pulse current is generated through a welding controller, then by measuring the values of the current and voltage which flow through the electrode end, the resistance value of the welded workpiece is calculated, and material information of the welded workpiece is obtained by comparing a big data system inside the welding controller; and (3) according to the obtained thickness information and material information, the optimal welding parameters are selected from thebig data system for welding. Full-automatic welding can be achieved, and no parameter setting is needed; and online real-time lossless evaluating of the welding quality can be achieved; the number ofscrapped workpieces generated by mistaken selection of the welding parameters in the welding process of a worker is reduced, so that the cost is reduced; and the development period of a novel vehicletype is shortened, and the time-to-market of the novel vehicle type is shortened.

Description

technical field [0001] The invention belongs to the field of intermediate frequency inverter resistance spot welding control systems, and in particular relates to a resistance spot welding control method and system free of parameter setting. Background technique [0002] Resistance spot welding technology is widely used in the manufacture of automobile body-in-white. Usually, when a technician gets a new workpiece, in order to ensure the welding quality, the three elements of welding in the traditional resistance spot welding process: current, power-on time, and pressure are optimized to obtain the best welding. Quality, in this process, a large number of process tests and mechanical tests are carried out. At the same time, it is necessary to carry out destructive inspection on the welded parts in order to obtain data such as nugget diameter, which will consume a lot of manpower and material resources. [0003] In addition, in order to win the highly competitive market, ma...

Claims

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Application Information

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IPC IPC(8): B23K11/11B23K11/31B23K11/36B23K11/24
CPCB23K11/115B23K11/24B23K11/31B23K11/36
Inventor 高忠林王勇刘翥寰王为
Owner 天津七所高科技有限公司
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