Squitter pulse welding method

A pulse welding and welding torque technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as increased line energy and burn-through of base metal, and achieve the effect of suppressing line energy and improving aesthetics.

Active Publication Date: 2013-03-27
DAIHEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, in order to form a wide weld seam, it is necessary to weld with a large welding current or a long welding time, but in this case, the base metal of the thin plate burns through due to the increase in the input energy.
That is, there is a problem that a wide weld seam cannot be formed in intermittent pulse welding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0126] Hereinafter, embodiments of the invention will be described based on examples with reference to the drawings.

[0127] figure 1 It is a block diagram of the intermittent pulse welding device 1 applicable to the intermittent pulse welding method related to the present invention. In this figure, with the prior art Figure 13 The difference lies in the robot controller RC and the teach pendant TP as the operating unit. Other manipulator M, welding power source AP, welding wire spool 56, gas cylinder 58 and the like that have been described in the prior art are not shown and are omitted. Hereinafter, the robot controller RC and the teach pendant TP constituting the main parts of the present invention will be described.

[0128] The robot control device RC is used to control the welding operation of the robot arm M, and includes: a main control unit 3 serving as the center; and an operation control unit that performs trajectory calculation of the robot arm M, etc., and ou...

Embodiment approach 2

[0160] Next, Embodiment 2 of the present invention will be described. In Embodiment 1, the welding trajectory is generated on the working line direction side of the working position Pn, but in the second embodiment, the welding trajectory is generated around the working position Pn.

[0161] Figure 6 It is a diagram showing how a circular welding track is generated around the working position Pn in the second embodiment. In this figure, with Figure 4 The difference is that the working position Pn is taken as the center position Cc' of the circular welding track Kc'. Others are the same as those in Embodiment 1, and thus description thereof will be omitted.

[0162] The circular welding track Kc' is generated as follows. First, with the work position Pn as the center position Cc', a circular orbit having a circle radius value Cr in the YZ plane is calculated. Then, on the circular orbit, the welding start and end position Wp' is calculated at a position separated from th...

Embodiment approach 3

[0178] Next, Embodiment 3 of the present invention will be described. In Embodiments 1 and 2, the circular welding trajectory Kc (Kc') or the elliptical welding trajectory Kd (Kd') is generated on the side of the working line direction of the working position Pn or around the working position Pn, but in the third embodiment, the generation from The work position Pn faces the spiral welding rail which spirally rotates outward.

[0179] Figure 9 It is a figure for explaining a spiral welding track. This figure is a view of the YZ plane of the welding line coordinate system described in Embodiment 1 viewed from the X+ direction, and shows how the spiral welding trajectory Kr is drawn on the YZ plane. In this figure, the working position Pn, the working line L, the working line direction Dr and the rotation direction Rd are related to Figure 4 The parts assigned the same symbols are the same, so descriptions are omitted.

[0180] The spiral welding track Kr shown in the figu...

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Abstract

The present invention provides an interrupting pulse welding method capable of forming wide welding seam. According to the method, an arc welding torch (T) welds again at next operation position away from preset move distance after the torch (T) is moved and weld at an operation position on work line (L), such that welding marks formed at each operation position overlap and the welding marks are formed on the work piece (W), welding tracks (Kc) are formed in preset area including operation position (Pn) and having preset width in operation lien direction (Dr) and direction orthorhombic to the operation line (L), a front end of the arc welding torch (T) moves along the welding tracks (Kc) at same time of welding. The welding tracks (Kc) are round or elliptical or spiral welding tracks, and are generated according to patterns selected from preset track patterns. Wide welding marks may be obtained by forming welding marks with the welding tracks (Kc) at each operation position.

Description

technical field [0001] The present invention relates to a stitch pulse (stitch pulse) welding method for performing welding while minimizing the thermal influence on a base material of a thin plate. Background technique [0002] Intermittent pulse welding refers to a welding method that minimizes the thermal influence on the base metal by controlling the heat input and cooling during welding. It is a welding method aimed at automating thin plate welding, and can improve the welding appearance and reduce welding deformation compared with conventional thin plate welding (for example, refer to Patent Document 1). [0003] Patent Document 1 discloses that an arc is generated for a predetermined time while the arc welding torch is stopped to melt the base material, and the arc is stopped after the elapse of the set time and the arc welding torch is moved to the outer peripheral side of the melting portion. The method of the arc restart point. This prior art will be described be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/09
Inventor 广田周吾上园敏郎中津川勇二
Owner DAIHEN CORP
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