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Electrode dressing on-line distinguishing method based on spot-welding of servo torch

A technology of servo welding gun and discrimination method, which is applied in the direction of electrode characteristics, welding equipment, resistance welding equipment, etc., can solve the problems that there is no online discrimination method for electrode grinding, and no online discrimination of servo welding gun electrode grinding has been found, so as to reduce the impact Effect

Inactive Publication Date: 2006-11-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, the electrode grinding time of a certain material is only determined in advance according to the test, and then applied to actual production. There is no simple and feasible online identification method for electrode grinding
[0004] After checking the novelty of the existing technology, there is no literature report on online discrimination of servo welding gun electrode grinding

Method used

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  • Electrode dressing on-line distinguishing method based on spot-welding of servo torch
  • Electrode dressing on-line distinguishing method based on spot-welding of servo torch
  • Electrode dressing on-line distinguishing method based on spot-welding of servo torch

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Embodiment Construction

[0016] The following embodiments are provided in conjunction with the technical scheme of the present invention:

[0017] (1) This embodiment adopts the spot welding system of servo welding torch and robot integrated control to start welding, such as figure 1 As shown, the robot controller 1 transmits the motion control instruction to the robot 3 through the signal optical cable 2, and the robot 3 executes the motion instruction to move the servo welding gun 21 fixed on the robot arm to the designated welding position, so that the welding gun 21 fixed on the lower electrode arm 13 The lower electrode 12 is in close contact with the workpiece 11 . The robot controller 1 transmits the command to control the movement of the upper electrode 9 to the servo motor 6 through the signal optical cable 4, and the servo motor 6 controls the upper electrode 9 fixed on the upper electrode arm 8 to move to the designated position at a predetermined speed through the transmission device 7. T...

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Abstract

The invention relates to an online check method of electrode abrasion, based on the point weld of servo weld gun, belonging to the weld technique. The invention uses the servo weld gun to online obtain the depth of impression, to realize the online extraction of impression depth at each electrode abrasion step in the point weld process; according to the change rule of impression depth with the electrode abrasion, at the initial weld step, the impression depth is deeper, and with the increase of electrode abrasion, the electrode end area increase, to reduce the current density and electrode pressure at the end surface of electrode, to reduce the depth of impression, to realize the online check of electrode abrasion via the impression depth, to check if the electrode should be repaired. The invention compares and analyzes the change character of impression depth at different electrode abrasion steps, via extracting the impression depth information to realize the online check, and reduce the effect of unconfirmed electrode abrasion on the quality of weld point.

Description

technical field [0001] The invention relates to a method in the field of welding technology, in particular to an online discrimination method for electrode grinding based on servo welding torch spot welding. Background technique [0002] Resistance spot welding is an important thin-plate joining technology and the main welding assembly method in car body manufacturing. In order to meet the needs of lightweight, safety and fuel economy of automobiles, a large number of high-strength and lightweight materials such as galvanized sheets and aluminum alloys are used in body manufacturing. Due to the special material properties, spot welding of such materials requires stronger welding specifications and is easy to alloy with the electrode, causing serious wear and uncertainty of the electrode. Serious and uncertain electrode wear increases the area of ​​the electrode end face, reduces the current density and electrode pressure on the contact surface between the electrode and the ...

Claims

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Application Information

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IPC IPC(8): B23K11/30B23K11/11B23K11/36
Inventor 林忠钦王培中陈关龙张旭强张延松
Owner SHANGHAI JIAO TONG UNIV
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