Method for adjusting welding parameters based on large step pitch calibration and Newton interpolation

A technology of welding parameters and adjustment methods, applied in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effects of reduced development cycle and development cost, good weld formation, and welding parameter coverage

Active Publication Date: 2011-06-01
EAST GRP CO LTD
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Problems solved by technology

For a specific parameter, it may be possible to improve it by fine-tuning the wire feeding, but facing thousands of sets of data, a large number of debugging experiments are required

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  • Method for adjusting welding parameters based on large step pitch calibration and Newton interpolation
  • Method for adjusting welding parameters based on large step pitch calibration and Newton interpolation

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Embodiment Construction

[0021] The following describes the present invention in further detail with reference to the accompanying drawings and embodiments, but the implementation method and the scope of protection of the present invention are not limited to this.

[0022] 1. Principle of large-step calibration: The goal of large-step calibration is to determine the direction and skeleton of the expert database, determine the initial value of the parameters for the intelligent welding machine, and the refined expert data is generated through self-adjustment. Large-step calibration means that when the digital welding machine database is initialized, its fine calibration strategy is changed, and only a few typical parameters are calibrated. For example, take the P-GMAW welding with 1.2mm carbon steel wire as an example, assuming that the welding current adjustment range is 80A to 350A, then the step distance can be set to 20A, that is to say, the welding parameters corresponding to the current of 80A to 35...

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Abstract

The invention relates to a method for adjusting welding parameters based on large step pitch calibration and local Newton interpolation, which comprises the steps of: automatically generating parameters of other working points in the interval by means of Newton interpolation with a plurality of calibration working point parameters with good welding effect to achieve continuous adjusting effect and supplement the deficiency of discretized segmented adjustment of a digital welding power supply; and raising welding parameter storage modes of different attribute priorities according to different parameter generating manners to optimize the welding parameters. By using the invention, parameters of various welding processes such as CO2 welding and P-GMAW (Pulse-Gas Metal Arc Welding) and the like are generated automatically and used for welding, so that the process is stable and the weld joint is formed well. The method can realize the coverage of the welding parameters, realize the automatic learning function of a digital welding machine so that the welding parameters are more favorable as being used further, thereby meeting the requirements of intelligentization of the digital welding machine.

Description

Technical field [0001] The invention belongs to the field of high-end welding technology, and particularly relates to a welding parameter adjustment method based on large step calibration and Newton interpolation. Background technique [0002] The digital welding machine has the advantages of unified parameters, multi-function integration, flexible process control, high control precision and humanized operation interface. In the ordinary digital welding machine database, in order to realize the fine adjustment of the output control, a large number of welding parameters need to be stored in the database. On the one hand, thousands of welding parameters need to be tested one by one, and the workload is huge; on the other hand, such a large and accurate static database is bound to have serious "global risks"; that is, the digital welding machine of the same model, Because the components and other parameters of each welding machine are different from the calibration test prototype, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/095
Inventor 薛家祥林放徐海波崔龙彬陈小峰
Owner EAST GRP CO LTD
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