CN111590189B - Welding additive welding ultrasonic impact device and operation method - Google Patents

Abstract

The present invention relates to the technical field of 3D printing, in particular to a welding additive with welding ultrasonic impact device and an operation method, including a welding torch, a connecting sleeve assembly, and an ultrasonic vibrator. The welding torch is connected to the connecting sleeve assembly through the welding torch connecting assembly. The vibrator is set in the connecting sleeve assembly, the steel ball at the bottom end of the ultrasonic vibrator passes through the connecting sleeve assembly and contacts the welding layer, and the welding layer is ultrasonically impacted with welding. The invention can convert the damage energy of the earthquake wave to the building, block the influence of the earthquake wave on the foundation of the building, and further avoid the vibration of the ground part of the building. The invention implements real-time ultrasonic shock impact on the welding layer or weld seam, which can meet the needs of modern welding additive manufacturing; can adapt to different impact pressure and weldment unevenness requirements; can adjust the distance between the ultrasonic impact position and the welding torch position according to requirements, and adapt to welding Time lag time adjustment; high ultrasonic transmission efficiency, good ultrasonic shock treatment effect.

Description

A kind of welding additive with welding ultrasonic impact device and operation method

technical field

The invention relates to the technical field of 3D printing, in particular to an ultrasonic impact device and an operation method for welding additive materials with welding.

Background technique

With the development of science and technology, additive manufacturing technology is surging. Compared with other additive manufacturing, welding additive manufacturing has low cost and high efficiency, especially the advantages of some large-scale component additive manufacturing are more obvious. Therefore, welding additive manufacturing grows faster . In addition, welding technology is also widely used in national defense and military industry, national economy and people's livelihood, and is widely used in ships, vehicles, pressure vessels, etc. However, after all, welding is locally heated and melted, and then cooled to form a weld or weld layer. It is essentially a local metallurgical process, which will inevitably produce many factors such as oxidation, pores, coarse grains in metallographic structure, stress, strain and cracks, etc. Welding defects affect the material, geometric accuracy and performance of the product.

In order to improve the welding quality, people have explored many methods to reduce or eliminate welding defects, and shock vibration to the weld is one of the effective methods. In recent years, a relatively new and very promising application of Ultrasonic Impact Treatment (UIT), developed by the Soviet shipbuilding industry, has attracted attention in terms of improving weld quality.

However, ultrasonic impact treatment with welding has a better effect because it is real-time ultrasonic impact during the production process of welding additive products: on the one hand, it can refine the grain, improve the structure, and reduce defects; on the other hand, due to the concentration of processes, ultrasonic Shock treatment, higher production efficiency.

The principle of ultrasonic impact treatment with welding is: the mechanical vibration energy of ultrasonic frequency is transmitted to the weld under a certain pressure immediately, so that the surface of the welded joint in a certain area centered on the transition zone between the weld and the base metal produces a certain depth of plastic deformation layer, thereby effectively improving the appearance of the weld toe, making it a smooth transition, reducing the stress concentration of the welded joint, and even generating compressive stress on the surface. The fatigue strength and fatigue life of welded joints after ultrasonic shock treatment are improved.

At present, there have been technical researches on ultrasonic impact treatment to improve welding quality and reduce welding defects in China, but the number is very small.

For example: Jia Liu of Changchun University of Science and Technology published "Effect of ultrasonic power on porosity microstructure, mechanical properties of the aluminum alloy joint by ultrasonic assisted laser-MIG hybrid welding" in "Optics and Laser Technology" in 2019; China Fangda Special Steel Technology Co., Ltd. In 2019, Xie Yutian and others of the company designed a surface ultrasonic impact device (belonging to post-weld impact) suitable for various shapes and structures; Residual stress technology" patent.

The existing welding ultrasonic shock treatment is still in theoretical research, and there are few technical solutions and specific structures. At present, there is no application of welding ultrasonic shock technology to welding additive manufacturing, and there is no corresponding technical solution, which needs to be further developed and improved:

1 Does not consider ultrasonic shock pressure adjustments. However, the actual thickness of the solder layer changes within a certain range, so the ultrasonic vibrator changes when it is loaded. Make the ultrasonic vibrator easy to deviate from the resonance.

2. The existing welding ultrasonic impact method is: the welding torch is welded above the weldment, and the ultrasonic impact head is impacted behind the weldment, which is only suitable for single-layer welds. Therefore, it cannot be applied to welding additive manufacturing.

3 No consideration is given to the adjustment of the interval between the welding point and the welding impact point: relevant research in the industry has proved that the welding impact point is located in the high-temperature plastic zone of welding, and the effect is the best. The optimal distance is also different, but the prior art does not consider adjusting the distance between the welding point and the welding impact point. That is to say, without considering the lag time adjustment of the welding impact, it is difficult to ensure that the welding impact point is located in the welding high temperature plastic zone.

4 There is no clear way of transmitting ultrasonic vibration to the weldment, but the contact mode is directly related to the efficiency of ultrasonic transmission. On the other hand, with the ultrasonic impact of welding, the ultrasonic vibrator must move flexibly on the welding layer or weld with the welding torch. The existing welding ultrasonic impact head is in contact with the welding seam plane. Although the ultrasonic transmission is good, it is difficult to move and the ultrasonic vibrator is easy to deflect.

5 Welding additive manufacturing With the ultrasonic impact of welding, the welding torch and the ultrasonic vibrator must move synchronously in the three-dimensional coordinates. Due to the self-weight of the ultrasonic vibrator, the mobile load of the welding additive equipment in the height direction will be increased.

6 In the process of ultrasonic impact additive manufacturing with welding, the welding torch and the ultrasonic vibrator move synchronously and must be connected as a component, but they must be separated by a certain distance (adjust the distance between the welding torch and the vibrator to obtain the best processing effect), so the space between the welding torch and the vibrator are two differences. Therefore, to make the welding torch and the ultrasonic vibrator move synchronously, the trajectory of the welding torch must be clearly defined.

It can be seen that there are many blind spots and difficulties in the concept and method of welding ultrasonic shock treatment for welding additive manufacturing, and technological breakthroughs are urgently needed.

The present invention provides a welding ultrasonic impact device and operation method for welding additive manufacturing, which implements real-time ultrasonic impact impact on the welding layer or weld seam, which can meet the needs of modern welding additive manufacturing; and can adapt to different impact pressures and uneven weldment requirements ; Reduce the deflection of the ultrasonic vibrator, and the ultrasonic vibrator moves stably with the welding torch; the distance between the ultrasonic impact position and the welding torch position can be adjusted according to requirements, adapting to the adjustment of the lag time with the welding time; the ultrasonic transmission efficiency is high, and the ultrasonic impact treatment effect is good; the system is concise and easy to use Convenient, advanced technology, novel method, practical and reliable.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a welding additive with welding ultrasonic impact device and operation method, to implement ultrasonic impact real-time impact on the welding layer or weld seam, which can meet the needs of modern welding additive manufacturing; can adapt to Requirements for different impact pressures and uneven weldments; reduce the deflection of the ultrasonic vibrator, and the ultrasonic vibrator moves stably with the welding torch. The distance between ultrasonic impact position and welding torch position can be adjusted according to requirements, adapting to the adjustment of welding time lag time; ultrasonic transmission efficiency is high, and ultrasonic impact treatment effect is good; the system is simple, easy to use, advanced technology, novel method, practical and reliable.

In order to realize the purpose of the present invention, the technical scheme adopted in the present invention is:

The invention discloses an ultrasonic impact device for welding additive materials with welding, which includes a welding torch, a connecting sleeve assembly, and an ultrasonic vibrator. The steel ball at the bottom end of the ultrasonic vibrator contacts the welding layer after passing through the connecting sleeve assembly, and the welding layer is ultrasonically impacted with welding.

The welding torch connection assembly includes a welding torch set screw, a welding torch connection strap screw, a welding torch connection plate, a welding torch connection plate set screw and a welding torch connection strap, and the welding torch connection strap is provided with a torch hole for welding torch insertion, which The outer wall is provided with a welding torch set screw hole connected to the welding torch hole for the insertion of the welding torch set screw; the welding torch connecting plate is provided with a connecting sleeve hole for the insertion of the connecting sleeve assembly, and the outer wall of the welding torch connecting plate There are fixing screws on the welding torch connecting plate, and the inner end of the welding torch connecting plate and the welding torch connecting strap is provided with a number of adjustment holes for fixing the welding torch connecting strap screws, and the welding torch connecting strap screws are connected with different adjustment holes. The hole is fixed to realize the distance adjustment between the welding torch and the ultrasonic vibrator.

The welding torch adopts a unidirectional linear motion trajectory to weld the additive material to ensure that the trajectory of the ultrasonic vibrator is consistent with that of the welding torch; multiple unidirectional linear trajectories approach the cross-section layer of the product, and the multi-layer cross-section approaches the product.

The ultrasonic vibrator includes a steel ball, a horn, a horn connecting screw, a transducer, an electric fan, and a vibrator cover. The horn has a conical structure, the steel ball is arranged at the bottom, and the top is connected to the The bottom of the vibrator cover is connected by the connecting screw of the horn; the transducer is set in the vibrator cover, the electric fan is set on the top of the vibrator cover, and the side wall of the vibrator cover is provided with a heat dissipation window;

The connecting sleeve assembly includes a pre-tightening lock ring, a connecting sleeve set screw, a steel ball retaining sleeve, a retaining sleeve gasket, a retaining sleeve locking ring, an anti-rotation pin, a drawstring support, a connecting sleeve, an elastic ring, and a pre-tightening ring , the inner cavity of the connecting sleeve matches the external shape of the ultrasonic vibrator, the pre-tightening ring is arranged on the top of the inner wall of the connecting sleeve, and a pre-tightening locking ring is provided on the outside for locking it. An elastic ring is provided between the pre-tightening ring and the top of the ultrasonic vibrator, the steel ball holding sleeve is arranged at the bottom of the connecting sleeve, and the steel ball holding sleeve and the connecting sleeve pass through the holding sleeve The lock ring is connected.

A detent pin is provided under the side wall of the connection sleeve to prevent the vibrator cover and the ultrasonic vibrator from rotating in the inner circumference of the connection sleeve, and the vibrator cover and the ultrasonic vibrator are provided with through holes for insertion of the detent pin.

One side of the connecting sleeve is connected with the 3D moving column of the gantry welding machine through the set screw of the connecting sleeve, and the top of the 3D moving column of the gantry welding machine is fixed on the horizontal block of the gantry welding machine, and the horizontal block of the gantry welding machine is connected with the gantry welding machine. The horizontal slide rail of the welding machine cooperates to slide; the outer wall of the horizontal slide rail of the gantry welding machine is connected to the fixed pulley bracket, and the fixed pulley on the fixed pulley bracket is covered with a pull rope, and one end of the pull rope is connected to the side of the connecting sleeve. The stay rope support under the wall is connected, and the other end is connected with the counterweight.

An operation method of a welding additive with welding ultrasonic impact device, comprising the following steps:

Step 1. Rotate the pre-tension ring to adjust the pre-pressure of the ultrasonic vibrator and lock the pre-tension ring through the pre-tightening lock ring according to the requirements of the welding ultrasonic shock treatment process;

Step 1, according to the process requirements of ultrasonic impact treatment with welding, adjust the distance between the welding torch and the ultrasonic vibrator and lock the welding torch connecting plate screws;

Step 3, loosen the welding gun set screw, adjust the welding gun so that the height of the welding gun is suitable for welding additives;

Step 4, start the ultrasonic power supply, and at the same time decide whether to turn on the fan of the ultrasonic vibrator transducer according to the cooling requirements, and position the welding torch at a safe height;

Step 5, move the 3D moving column of the gantry welding machine to position the welding torch at the starting position of the welding additive or welding seam, and start the welding torch to work;

Step 6, the 3D moving column of the gantry welding machine moves in a straight line, the welding torch welds the additive material in front, the ultrasonic vibrator follows the welding torch for ultrasonic impact treatment, until the straight line movement ends, close the welding torch, and then make the 3D moving column continue along the straight line for a distance longer than the welding torch The stroke of the distance from the ultrasonic vibrator, the 3D mobile column rises to a safe height;

Step 7, the 3D mobile column continues to move, according to the approach rule of the one-way linear welding additive trajectory, the welding torch is positioned at the starting position of the next linear welding additive in the welding layer, and the next linear welding additive and welding ultrasonic treatment are started . Multiple parallel welding straight-line trajectories approach the section layer of the component, and the multi-layer section approaches the 3D shape of the product, completing the product welding additive manufacturing and welding ultrasonic treatment;

Step 8: Turn off the welding torch and ultrasonic power supply, move the 3D mobile column to a safe plane height, and end the welding additive and ultrasonic impact.

The beneficial effects of the present invention are:

The invention applies the welding ultrasonic impact to the layered manufacturing of the welding additive material, realizes the real-time ultrasonic impact treatment of the welding additive material, has good processing effect, and greatly improves the quality and production efficiency of the welding additive material.

The invention can conveniently adjust the ultrasonic impact pressure and the lag time of the ultrasonic ultrasonic impact with welding, adapt to the change of the thickness of the welding layer or welding seam, and maintain the resonance of the ultrasonic vibrator. It can reduce the friction and deflection of the ultrasonic vibrator moving with welding, stabilize the ultrasonic shock treatment process, meet the technological requirements of ultrasonic shock treatment with welding, and have high ultrasonic transmission efficiency.

The system of the invention is concise, convenient to construct, practical and reliable, easy to operate and intelligently controlled.

Description of drawings

Fig. 1, the schematic diagram of welding ultrasonic impact treatment scheme in the present invention;

Fig. 2, the schematic diagram of welding torch unidirectional parallel straight line welding trajectory among the present invention;

Fig. 3 is a sectional view of the welding ultrasonic impact device of the present invention;

Fig. 4, the sectional view of welding torch and connecting assembly among the present invention;

Fig. 5 is a sectional view of the connecting sleeve assembly in the present invention;

Fig. 6 is a sectional view of an ultrasonic vibrator in the present invention;

Fig. 7, the sectional view of counterweight block and gantry welding machine in the present invention.

In the figure, 100-welding torch connecting assembly, 101-welding torch, 102-welding torch set screw, 103-welding torch connecting strap screw, 104-welding torch connecting plate, 105-welding torch connecting plate set screw, 106-welding torch connecting strap, 200-connection sleeve assembly, 201-pre-tightening lock ring, 202-connection sleeve set screw, 203-steel ball retainer, 204-retainer gasket, 205-retainer lock ring, 206-anti-rotation pin, 207- Drawstring support, 208-connecting sleeve, 209-elastic ring, 210-pretension ring, 300-ultrasonic vibrator, 301-steel ball, 302-horn, 303-horn connecting screw, 304-transducer , 305-electric fan, 306-vibrator cover, 400-counterweight and gantry welding machine, 401-counterweight, 402-drawing rope, 403-fixed pulley, 404-horizontal slide rail of gantry welding machine, 405-gantry welding Machine horizontal pulley, 406-gantry welding machine 3D mobile column.

Implementation

Below the present invention is further described:

Please refer to Figure 1-7,

The invention discloses an ultrasonic impact device for welding additive materials with welding. The device description: the connecting sleeve 208 is connected with the 3D moving column 406 of the gantry welding machine, the ultrasonic vibrator 300 is floating on the connecting sleeve assembly 200, and the front end of the ultrasonic vibrator horn 302 Ultrasonic impact treatment of the welding layer by the steel ball 301 reduces the friction of the ultrasonic vibrator moving with the welding and avoids the deflection of the ultrasonic vibrator; the upper part of the connecting sleeve is equipped with a pre-tightening ring 210 and an elastic ring 209 for adjusting the pre-pressure of the ultrasonic impact; The thickness of the welding layer or weld seam changes, the load of the ultrasonic vibrator is stabilized, and the resonant frequency is stabilized. The lower part of the connection sleeve is equipped with a steel ball holding sleeve 203 to ensure that the steel ball can move with the ultrasonic vibrator and prevent the ultrasonic vibrator from falling; The welding torch welds the additive material in front, and the ultrasonic vibrator impacts with the welding, so as to realize the ultrasonic impact treatment of the welding layer or weld seam with welding.

The specific structure is:

1 ultrasonic vibrator

A. After the horn 302 is combined with the transducer 304, it is positioned on the vibrator sleeve 306 through the mounting flange at the wave node, and prevents the ultrasonic transmission from being transmitted to the vibrator sleeve; Vibrator sleeve connection. The upper end of the vibrator cover is equipped with an electric fan 305 and an air-cooled transducer, and the middle part of the vibrator cover is provided with cooling holes to dissipate heat and facilitate the connection of an ultrasonic power supply.

B. The front end of the horn is ultrasonically impacted by steel ball 301 on the welding layer or weld seam, and at the same time reduces the friction of the ultrasonic vibrator moving with the welding, and reduces the deflection of the ultrasonic vibrator.

2 connection set components:

A connecting sleeve 208 is connected with the gantry welding machine 3D moving column 406 through the connecting sleeve set screw 202 .

B The ultrasonic vibrator 300 is connected to the vibrator cover 306 and then floated on the connecting sleeve 208. The upper part of the connecting sleeve 208 is equipped with a pre-tightening ring 210 and an elastic ring 209, which are used to adjust the pre-pressure of the ultrasonic impact and lock the pre-tightening through the pre-tightening lock ring 201. Ring; to adapt to changes in the thickness of the welding layer or weld seam, stabilize the load of the ultrasonic vibrator, and stabilize the resonance frequency. The lower part of the connection sleeve is equipped with a steel ball retaining sleeve 203, and the steel ball retaining sleeve 203 is locked by the retaining sleeve lock ring 205 to ensure that the steel ball 301 can move with the ultrasonic vibrator 300 and prevent the ultrasonic vibrator from falling; the steel ball retaining sleeve 203 is connected to the A sleeve gasket 204 is provided at the joint of the sleeve 208 .

C The side of the connecting sleeve is equipped with a detent pin 206 to prevent the vibrator cover and the ultrasonic vibrator from rotating in the inner circumference of the connecting sleeve.

3 Welding torch connection components:

The welding torch 101 is fixed on the welding torch connection strap 106 through the welding torch set screw 102, and the welding torch height can be adjusted independently by loosening the welding torch set screw. Then connect the strap screw 103 by the welding torch, connect the strap to the welding torch connecting plate 104, then the welding torch connecting plate 104 is fixed on the steel ball holding sleeve 203 side by the welding torch connecting plate set screw 105. There is a waist-shaped hole groove on the connecting plate of the welding torch, which is used to adjust the distance between the welding torch and the ultrasonic vibrator, so as to adjust the lag time of ultrasonic impact with welding.

4 counterweight and gantry welding machine:

One side of the connecting sleeve 208 is connected with the 3D moving column 406 of the gantry welding machine through the set screw 202 of the connecting sleeve, and the top of the 3D moving column 406 of the gantry welding machine is fixed on the horizontal pulley 405 of the gantry welding machine. The pulley 405 slides in cooperation with the horizontal slide rail 404 of the gantry welding machine; the horizontal pulley 405 of the gantry welding machine is equipped with a fixed pulley bracket and a fixed pulley 403, and the fixed pulley is equipped with a stay rope 402, and one end of the stay rope 402 is connected to the side wall of the connecting sleeve 208 The lower stay rope support 207 is connected, and the other end is connected with the counterweight 401. The counterweight 401 balances the weight of the connecting sleeve assembly 200 through the stay rope 402, and reduces the load of the gantry welding machine 3D moving column 406 moving up and down.

Step 1: Rotate the pre-tension ring 210 according to the process requirements of the welding ultrasonic shock treatment, adjust the pre-pressure of the ultrasonic vibrator and lock the pre-tension ring through the pre-tight lock ring 201;

Step 2, according to the process requirements of the welding ultrasonic shock treatment, adjust the distance L between the welding torch and the ultrasonic vibrator and lock the welding torch connecting plate screw 103;

Step 3, loosen the welding torch set screw 102, adjust the welding torch 101 so that the height of the welding torch is suitable for welding additives;

Step 4, start the ultrasonic power supply (at the same time decide whether to turn on the fan 305 of the ultrasonic vibrator transducer according to the cooling requirement), and position the welding torch at a safe height;

Step 5, move the 3D moving column 406 of the gantry welding machine to position the welding torch at the starting position of the welding additive or weld seam, and start the welding torch;

Step 6, the 3D moving column of the gantry welding machine moves in a straight line, the welding torch welds the additive material in front, and the ultrasonic vibrator follows the welding torch for ultrasonic impact treatment until the straight line movement ends, then the welding torch is turned off, and then the 3D moving column continues to travel along the straight line for a certain distance ( greater than the distance L between the welding torch and the ultrasonic vibrator); the 3D mobile column rises to a safe height;

Step 7, the 3D mobile column continues to move, according to the one-way linear welding additive trajectory approach rule (Figure 2), so that the welding torch is positioned at the starting position of the next linear welding additive in the welding layer, and the next linear welding additive and Ultrasonic treatment with welding. Multiple parallel welding straight-line trajectories approach the section layer of the component, and the multi-layer section approaches the 3D shape of the product. Complete product welding additive manufacturing and welding ultrasonic treatment;

Step 8: Turn off the welding torch and ultrasonic power supply, move the 3D mobile column to a safe plane height, and end the welding additive and ultrasonic impact.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent transformations made by using the description of the present invention and the contents of the accompanying drawings or directly or indirectly used in the relevant technical fields are all included in this patent. inventions within the scope of patent protection.

Claims (6)

1. A welding additive welding ultrasonic impact device, characterized in that: it includes a welding torch, a connecting sleeve assembly, and an ultrasonic vibrator, the welding torch is connected to the connecting sleeve assembly through the welding torch connecting assembly, and the ultrasonic vibrator is set in the connecting sleeve In the assembly, the steel ball at the bottom of the ultrasonic vibrator passes through the connecting sleeve assembly and contacts the welding layer, and the welding layer is subjected to ultrasonic impact treatment with welding; the ultrasonic vibrator includes steel balls, horns, and horn connecting screws , a transducer, an electric fan and a vibrator cover, the horn has a conical structure, the steel ball is arranged at the bottom of the horn, and the top of the horn is connected to the bottom of the vibrator cover through a horn connecting screw ; The transducer is set in the vibrator cover, the electric fan is set on the top of the vibrator cover, and the side wall of the vibrator cover is provided with a heat dissipation window; The connecting sleeve assembly includes a pre-tightening lock ring, a connecting sleeve set screw, a steel ball retaining sleeve, a retaining sleeve gasket, a retaining sleeve locking ring, an anti-rotation pin, a drawstring support, a connecting sleeve, an elastic ring, and a pre-tightening ring , the inner cavity of the connecting sleeve matches the external shape of the ultrasonic vibrator, the pre-tightening ring is arranged on the top of the inner wall of the connecting sleeve, and the pre-tightening ring is provided with a pre-tightening lock ring for locking it, An elastic ring is provided between the pre-tightening ring and the top of the ultrasonic vibrator, the steel ball holding sleeve is arranged at the bottom of the connecting sleeve, and the steel ball holding sleeve and the connecting sleeve pass through the Keep the sleeve lock ring connected. 2. A welding additive welding ultrasonic impact device according to claim 1, characterized in that: the welding torch connection assembly includes a welding torch set screw, a welding torch connection strap screw, a welding torch connection plate, a welding torch connection plate tightening Screws and a welding torch connection strap, the welding torch connection strap is provided with a welding torch hole for welding torch insertion, and its outer wall is provided with a welding torch set screw hole connected to the welding torch hole for insertion of a welding torch set screw; The welding torch connection plate is provided with a connection sleeve hole for the insertion of the connection sleeve assembly, the outer wall of the welding torch connection plate is provided with a welding torch connection plate set screw, and the welding torch connection plate is connected to the inner end of the welding torch connection strap. There are a number of adjustment holes for welding torch connection strap screws. 3. A kind of ultrasonic impact device according to claim 2, characterized in that: the welding torch adopts a unidirectional linear motion trajectory to weld the additive, ensuring that the ultrasonic vibrator is consistent with the trajectory of the welding torch; multiple unidirectional straight lines The trajectory approaches the section layer of the product, and the multi-layer section approaches the product. 4. A welding additive welding ultrasonic impact device according to claim 1, characterized in that: the anti-rotation pin is located below the side wall of the connecting sleeve to prevent the vibrator sleeve from rotating in the inner circumference of the connecting sleeve. The vibrator sleeve is provided with a through hole for the insertion of the anti-rotation pin. 5. A welding additive welding ultrasonic impact device according to claim 4, characterized in that: one side of the connection sleeve is connected to the 3D moving column of the gantry welding machine through the connection sleeve set screw, and the gantry welding machine The top of the 3D mobile column of the machine is fixed on the horizontal pulley of the gantry welding machine, and the horizontal pulley of the gantry welding machine slides in cooperation with the horizontal slide rail of the gantry welding machine; the outer wall of the horizontal slide rail of the gantry welding machine is connected with the fixed pulley bracket, and the The fixed pulley on the fixed pulley bracket is covered with a stay rope, one end of the stay rope is connected with the stay rope support below the side wall of the connecting sleeve, and the other end is connected with the counterweight. 6. An operation method of the welding additive welding ultrasonic impact device as claimed in claim 2, characterized in that it comprises the following steps: Step 1. Rotate the pre-tension ring to adjust the pre-pressure of the ultrasonic vibrator and lock the pre-tension ring through the pre-tightening lock ring according to the requirements of the welding ultrasonic shock treatment process; Step 1, according to the process requirements of ultrasonic impact treatment with welding, adjust the distance between the welding torch and the ultrasonic vibrator and lock the welding torch connecting plate screws; Step 3, loosen the welding gun set screw, adjust the welding gun so that the height of the welding gun is suitable for welding additives; Step 4, start the ultrasonic power supply, and at the same time decide whether to turn on the fan of the ultrasonic vibrator transducer according to the cooling requirements, and position the welding torch at a safe height; Step 5, move the 3D moving column of the gantry welding machine to position the welding torch at the starting position of the welding additive or welding seam, and start the welding torch to work; Step 6, the 3D moving column of the gantry welding machine moves in a straight line, the welding torch welds the additive material in front, the ultrasonic vibrator follows the welding torch for ultrasonic impact treatment, until the straight line movement ends, close the welding torch, and then make the 3D moving column continue along the straight line for a distance longer than the welding torch The stroke of the distance from the ultrasonic vibrator, the 3D mobile column rises to a safe height; Step 7, the 3D mobile column continues to move, according to the approach rule of the one-way linear welding additive trajectory, the welding torch is positioned at the starting position of the next linear welding additive in the welding layer, and the next linear welding additive and welding ultrasonic treatment are started ;Multiple parallel welding linear trajectories approach the section layer of the component, and the multi-layer section approaches the 3D shape of the product, completing the product welding additive manufacturing and welding ultrasonic treatment; Step 8: Turn off the welding torch and ultrasonic power supply, move the 3D mobile column to a safe plane height, and end the welding additive and ultrasonic impact.