阅读说明：本技术 一种双电弧辅助激光焊接装置及方法 (double-electric-arc auxiliary laser welding device and method ) 是由 宿世臣 姚德山 赵延民 于 2019-12-05 设计创作，主要内容包括：本发明公开了一种双电弧辅助激光焊接装置及方法,该装置包括焊接工作台、水平面移动装置、底座、环形滑动导轨、TIG焊接滑动导轨、激光导轨、等离子弧焊枪导轨、同轴送粉装置；处于同一平面的TIG焊接装置、激光装置和等离子弧焊接装置,水平面移动装置调节焊接工作台在水平面移动,环形滑动导轨固设在底座上,TIG焊接装置、激光装置、等离子弧焊接装置分别与TIG焊接滑动导轨、激光导轨、等离子弧焊枪导轨连接,TIG焊接滑动导轨和等离子弧焊枪导轨均设置在环形滑动导轨上,激光导轨固设在环形滑动导轨上,同轴送粉装置与等离子弧焊接装置连接。本发明提高焊接速度的同时保证接头背面能够熔透,在保证焊缝纯净度的同时使得焊缝的成形美观,焊缝质量高。(The invention discloses double-electric-arc auxiliary laser welding device and method, the device comprises a welding workbench, a horizontal plane moving device, a base, an annular sliding guide rail, a TIG welding sliding guide rail, a laser guide rail, a plasma arc welding gun guide rail and a coaxial powder feeding device, wherein the TIG welding device, the laser device and the plasma arc welding device are positioned on the same plane, the horizontal plane moving device adjusts the welding workbench to move on the horizontal plane, the annular sliding guide rail is fixedly arranged on the base, the TIG welding device, the laser device and the plasma arc welding device are respectively connected with the TIG welding sliding guide rail, the laser guide rail and the plasma arc welding gun guide rail, the TIG welding sliding guide rail and the plasma arc welding gun guide rail are both arranged on the annular sliding guide rail, the laser guide rail is fixedly arranged on the annular sliding guide rail, and the coaxial powder feeding device is connected with the plasma arc welding device.)

The double-electric-arc auxiliary laser welding device is characterized by comprising a welding workbench, a horizontal plane moving device, a base, an annular sliding guide rail, a TIG welding device, a TIG welding sliding guide rail, a laser device, a laser guide rail, a plasma arc welding device, a plasma arc welding gun guide rail and a coaxial powder feeding device;

the base is connected with horizontal plane mobile device, horizontal plane mobile device is connected with weldment work platform, horizontal plane mobile device adjusts weldment work platform and removes at the horizontal plane, annular sliding guide sets firmly on the base, TIG welding set and TIG welding sliding guide swing joint, laser device and laser guide rail swing joint, plasma arc welding set and plasma arc welding torch guide rail swing joint, TIG welding sliding guide and plasma arc welding torch guide rail equal activity set up on annular sliding guide, the laser guide is fixed to be set up on annular sliding guide, TIG welding set, laser device and plasma arc welding set are in with planes, the plane mutually perpendicular who forms with plane and weldment work platform, coaxial powder feeding device is connected with plasma arc welding set.

2. The dual arc assisted laser welding device of claim 1, wherein the TIG welding device and the plasma arc welding device are positioned on opposite sides of the laser device, respectively, and the plasma arc welding device is positioned opposite the front of the laser device and the TIG welding device is positioned opposite the back of the laser device when moving in the welding direction.

3. The dual arc assist laser welding apparatus as claimed in claim 1, wherein the horizontal plane moving means includes an X-axis moving means and a Y-axis moving means,

the Y-axis moving device comprises a Y-axis sliding guide rail, a Y-axis bidirectional lead screw and a Y-axis stepping motor,

the Y-axis sliding guide rail is connected with a Y-axis bidirectional screw through a -th coupler, a -th ball screw nut is arranged on the Y-axis bidirectional screw, and the -th ball screw nut is connected with the X-axis moving device;

the X-axis moving device comprises an X-axis sliding guide rail, an X-axis bidirectional lead screw and an X-axis stepping motor,

the X-axis stepping motor is connected with the X-axis bidirectional screw through a coupler, a second ball screw nut is arranged on the X-axis bidirectional screw, and the second ball screw nut is connected with the welding workbench.

4. The dual arc assisted laser welding device of claim 1 wherein the TIG welding slide rail is provided with an th carriage having bearings and the plasma arc torch guide rail is provided with a second carriage having bearings, the TIG welding slide rail being movably coupled to the annular slide rail via the th carriage and the plasma arc torch guide rail being movably coupled to the annular slide rail via the second carriage.

5. The double-arc auxiliary laser welding device as claimed in claim 1, wherein the TIG welding sliding guide rail is provided with an th sliding block, the plasma arc welding gun guide rail is provided with a second sliding block, the laser sliding rail is provided with a third sliding block, the TIG welding device is movably connected with the TIG welding sliding guide rail through a th sliding block, the plasma arc welding device is movably connected with the plasma arc welding gun guide rail through the second sliding block, and the laser device is movably connected with the laser sliding rail through the third sliding block.

6. The dual arc assisted laser welding device of claim 1, wherein the included angle of position between the TIG welding device and the laser device is set to 60-90 °, and the included angle of position between the plasma arc welding device and the laser device is set to 45-90 °.

7. The dual arc assisted laser welding device of claim 1, wherein the horizontal distance between the laser device and the TIG welding device is set to 5-20mm and the horizontal distance between the laser device and the plasma arc welding device is set to 2-5 mm.

8. The dual arc assisted laser welding device of claim 1, wherein the laser device has a power value set to 0.5-3KW, the plasma arc welding device has a current value set to 10-30A, the TIG welding device has a current value set to 5-25A, and the center-to-center distance of the heat source is set to 5-25 mm.

9, A double-arc assistant laser welding method, which is characterized in that the method comprises the following steps:

the method comprises the following steps of setting a laser device and a double-electric-arc device for hybrid welding, wherein the double-electric-arc device adopts a plasma arc welding device and a TIG welding device which are respectively arranged at two sides of the laser device and form the same plane with the laser device;

starting a plasma arc welding device, wherein the laser device performs welding along the vertical incidence of a welding seam, and the TIG welding device delays the start of welding;

and along the welding direction, the plasma arc welding device is oppositely arranged in front of the laser device, and the plasma arc welding device, the TIG welding device and the laser device are kept at fixed included angles and intervals for carrying out hybrid welding.

10. The dual arc assist laser welding method of claim 9 further comprising the step of co-axial powder feed for butt welding, starting the co-axial powder feed device, the co-axial powder feed device injecting a powder stream, and striking an arc to operate the main arc of the plasma arc.

Technical Field

The invention relates to the technical field of laser welding, in particular to double-arc auxiliary laser welding devices and methods.

Background

The aluminum/steel dissimilar metal is widely applied to the automobile industry by , because the weldability of aluminum and steel is poor, the high-quality connection of the aluminum/steel dissimilar metal is difficult to realize by adopting a traditional welding method, and a proper welding method is required to be adopted.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the invention provides double-arc auxiliary laser welding devices and methods.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides double-electric-arc auxiliary laser welding device, comprising:

the device comprises a welding workbench, a horizontal plane moving device, a base, an annular sliding guide rail, a TIG welding device, a TIG welding sliding guide rail, a laser device, a laser guide rail, a plasma arc welding device, a plasma arc welding gun guide rail and a coaxial powder feeding device;

the base is connected with horizontal plane mobile device, horizontal plane mobile device is connected with weldment work platform, horizontal plane mobile device adjusts weldment work platform and removes at the horizontal plane, annular sliding guide sets firmly on the base, TIG welding set and TIG welding sliding guide swing joint, laser device and laser guide rail swing joint, plasma arc welding set and plasma arc welding torch guide rail swing joint, TIG welding sliding guide and plasma arc welding torch guide rail equal activity set up on annular sliding guide, the laser guide is fixed to be set up on annular sliding guide, TIG welding set, laser device and plasma arc welding set are in with planes, the plane mutually perpendicular who forms with plane and weldment work platform, coaxial powder feeding device is connected with plasma arc welding set.

Preferably, the TIG welding device and the plasma arc welding device are respectively located on both sides of the laser device, and when moving in the welding direction, the plasma arc welding device is disposed in front of the laser device and the TIG welding device is disposed in rear of the laser device.

Preferably, the horizontal plane moving device comprises an X-axis moving device and a Y-axis moving device,

the Y-axis moving device comprises a Y-axis sliding guide rail, a Y-axis bidirectional lead screw and a Y-axis stepping motor,

the Y-axis sliding guide rail is connected with a Y-axis bidirectional screw through a -th coupler, a -th ball screw nut is arranged on the Y-axis bidirectional screw, and the -th ball screw nut is connected with the X-axis moving device;

the X-axis moving device comprises an X-axis sliding guide rail, an X-axis bidirectional lead screw and an X-axis stepping motor,

the X-axis stepping motor is connected with the X-axis bidirectional screw through a coupler, a second ball screw nut is arranged on the X-axis bidirectional screw, and the second ball screw nut is connected with the welding workbench.

According to a preferable technical scheme, the TIG welding sliding guide rail is provided with an th bearing sliding seat with a bearing, the plasma arc welding gun guide rail is provided with a second bearing sliding seat with a bearing, the TIG welding sliding guide rail is movably connected with the annular sliding guide rail through a th bearing sliding seat, and the plasma arc welding gun guide rail is movably connected with the annular sliding guide rail through the second bearing sliding seat.

Preferably, the TIG welding sliding guide rail is provided with an th slider, the plasma arc welding gun guide rail is provided with a second slider, the laser slide rail is provided with a third slider, the TIG welding device is movably connected with the TIG welding sliding guide rail through a th slider, the plasma arc welding device is movably connected with the plasma arc welding gun guide rail through the second slider, and the laser device is movably connected with the laser slide rail through the third slider.

Preferably, the position included angle between the TIG welding device and the laser device is 60-90 °, and the position included angle between the plasma arc welding device and the laser device is 45-90 °.

Preferably, the horizontal distance between the laser device and the TIG welding device is set to be 5-20mm, and the horizontal distance between the laser device and the plasma arc welding device is set to be 2-5 mm.

Preferably, the power value of the laser device is set to be 0.5-3KW, the current value of the plasma arc welding device is set to be 10-30A, the current value of the TIG welding device is set to be 5-25A, and the center distance of a heat source is set to be 5-25 mm.

The invention also provides double-electric-arc auxiliary laser welding methods, which comprise the following steps:

the method comprises the following steps of setting a laser device and a double-electric-arc device for hybrid welding, wherein the double-electric-arc device adopts a plasma arc welding device and a TIG welding device which are respectively arranged at two sides of the laser device and form the same plane with the laser device;

starting a plasma arc welding device, wherein the laser device performs welding along the vertical incidence of a welding seam, and the TIG welding device delays the start of welding;

and along the welding direction, the plasma arc welding device is oppositely arranged in front of the laser device, and the plasma arc welding device, the TIG welding device and the laser device are kept at fixed included angles and intervals for carrying out hybrid welding.

The preferable technical scheme comprises the step of carrying out butt welding by coaxial powder feeding, starting the coaxial powder feeding device, spraying powder flow by the coaxial powder feeding device, and carrying out arc striking to enable the main arc of the plasma arc to work.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) according to the invention, the movement speed of is kept in the welding process, the main heat source is a laser beam, the plasma arc is used as a heat source to melt off alloy powder and acts on molten pools together with the laser beam, the welding speed is improved, the back of the joint can be ensured to be melted through, the weld is enabled to be attractive in shape while the purity of the weld is ensured, and the weld is high in quality.

(2) The invention adopts a TIG low current electric arc method, and the TIG electric arc and the laser beam horizontal interval are adjusted, so that the TIG electric arc does not directly act on a molten pool, but steps are further carried out by influencing the temperature field distribution of the molten pool to improve the infiltration spreadability of molten metal.

(3) The invention adopts a coaxial powder feeding mode, realizes good gas protection, solves the problem that the filling powder is easily influenced by nitrogen and oxygen elements in the air, can adjust the type and the addition amount of the powder at any time, and increases the welding efficiency while realizing good filling.

(4) When the invention is used for welding, the plasma arc structure is positioned in front of the laser light source and is started in advance, so that the function of preheating before welding can be achieved, the cooling speed of a molten pool is reduced, and the crack tendency is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the double-arc auxiliary laser welding device according to the embodiment;

FIG. 2 is a general plan view of the double arc assist laser welding apparatus according to the present embodiment;

fig. 3 is a schematic diagram illustrating a positional relationship between the welding guns of the parts of the dual arc assisted laser welding apparatus according to the present embodiment.

The welding device comprises a 1-Y-axis sliding guide rail, a 2-welding workbench, a 3-X-axis sliding guide rail, a 4-stepping motor, a 5-annular sliding guide rail, a 6-TIG welding device, a 7-TIG welding sliding guide rail, an 8-laser device, a 9-plasma arc welding gun guide rail, a 10-plasma arc welding device, a 11-coaxial powder feeding device, a 12-steel plate and a 13-aluminum plate.

Detailed Description

For purposes of making the objects, aspects and advantages of the present invention more apparent, the present invention will be described in detail below with reference to the accompanying drawings and examples.