Synchronous ultrasonic peening device for assisting laser directional energy deposition

Abstract

The utility model belongs to the technical field of laser welding, and particularly relates to a synchronous ultrasonic peening device for assisting laser directional energy deposition, which comprises an ultrasonic vibrator, the output end of the ultrasonic vibrator is abutted against the bottom of a workbench, a workpiece is arranged on the workbench, a laser head is arranged above the workpiece, and the ultrasonic vibrator is fixedly connected with a first fixing device. The laser head is fixedly connected with the second fixing device, the first fixing device is connected with the second fixing device in a clamped and matched mode, the second fixing device is connected with the output end of the mechanical arm, and when the laser head welds a workpiece on the workbench, the ultrasonic vibrator is started to impact the bottom of the workbench 1 to drive the workpiece on the workbench to vibrate at high frequency; and metal liquid in a molten pool in a workpiece welding seam is driven to precipitate downwards, bubbles are discharged, and air holes are prevented from affecting attractiveness and strength after cooling.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding, and in particular relates to a synchronous ultrasonic impact device for assisting laser directional energy deposition. Background Art

[0002] With the development of science and technology, welding additive manufacturing has grown particularly rapidly. Welding technology is widely used in national defense and military industry, as well as in the people's livelihood. It is widely used in ships, vehicles, pressure vessels, etc. However, welding is a local metallurgical process that involves local heating and melting, followed by cooling to form a weld or weld layer. It will inevitably produce many welding defects such as oxidation, pores, coarse metallographic grains, stress, strain and cracks, which affect the appearance and performance of the product.

[0003] For example, the laser welding table with patent application number CN202320502255.2 comprises a base and left and right baffles fixedly mounted on the top of the base, wherein a mounting plate is rotatably connected between the left and right baffles, and a mounting seat is provided on the upper surface of the mounting plate. A base plate with a positioning hole is provided above the mounting seat, and the lower end of a positioning column is fixedly connected to the upper surface of the base, and the upper end thereof passes through the positioning hole and is exposed from the upper surface of the base plate. The grid bars arranged perpendicular to the length direction of the base plate are symmetrically arranged about the central axis of the base plate, and a receiving groove for stacking the first processing part and the second processing part is formed between the grid bars on both sides of the axis. The second processing part is arranged between the upper and lower first processing parts, and one end of the first processing part is connected to the positioning column set. However, the disadvantage of this technical solution is that an ultrasonic vibration device is not provided, and many welding defects such as oxidation, pores, coarse metallographic grains, stress, strain and cracks are easily generated during the welding process, affecting the appearance and performance of the product. Utility Model Content

[0004] The purpose of this utility model is to provide a synchronous ultrasonic impact device that assists laser directed energy deposition to solve the problems in the prior art. The specific technical solutions are as follows:

[0005] A synchronous ultrasonic impact device for assisting laser directional energy deposition includes an ultrasonic vibrator, the output end of the ultrasonic vibrator is against the bottom of a workbench, a workpiece is provided on the workbench, a laser head is provided above the workpiece, the ultrasonic vibrator is fixedly connected to a first fixing device, the laser head is fixedly connected to a second fixing device, the first fixing device and the second fixing device are snap-fitted and connected, and the second fixing device is connected to the output end of a manipulator.

[0006] Furthermore, the first fixing device includes a right-angle connecting plate, which is fixedly connected to the ultrasonic vibrator, slidably connected to the workbench, slidably connected to the slide, and fixedly connected to the limit rod through a connecting block.

[0007] Furthermore, reinforcing ribs are provided at the bends of the right-angle connecting plates.

[0008] Furthermore, a counterweight is provided on the skateboard.

[0009] Furthermore, the second fixing device includes a support plate, the support plate is connected to the output end of the manipulator, one end of the support plate is fixedly connected to the laser head, and the other end of the support plate is fixed with a motor.

[0010] Furthermore, the output end of the motor is connected to a rotating rod, and two bent rods are provided on the rotating rod. The two bent rods are respectively located on both sides of the connecting block and are clamped between the limiting rod and the slide plate.

[0011] Furthermore, a bracket is fixed to the lower end of the ultrasonic vibrator, the bracket slides on a guide rail through a pulley, and the guide rail is fixed to the lower end of the workbench.

[0012] Furthermore, the ultrasonic vibrator is electrically connected to an ultrasonic generator, and the ultrasonic generator is arranged on the side of the workbench.

[0013] Furthermore, the laser head is optically connected to the laser generator, the laser head is connected to one end of the gas outlet pipe, the other end of the gas outlet pipe is connected to the gas storage tank, and the laser generator and the gas storage tank are arranged on the side of the workbench.

[0014] Furthermore, the workpiece is fixed on the workbench by a fixing component, which includes a pillar fixed on the workbench. The pillar is sleeved with a pressing piece and a screw, and the front end of the pressing piece is against the workpiece.

[0015] The advantages of the present invention are:

[0016] While the laser head is welding the workpiece on the workbench, the ultrasonic vibrator is started and impacts the bottom of the workbench 1, driving the workpiece on the workbench to vibrate at high frequency, driving the metal liquid in the molten pool in the weld of the workpiece to settle downward, expelling bubbles, and preventing air holes after cooling that affect the appearance and strength. The manipulator operates the laser head to move through the second fixing device, and the second fixing device drives the ultrasonic vibrator to follow the movement through the first fixing device, keeping the ultrasonic vibrator directly below the laser head at all times, so that the ultrasonic vibration effect is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0020] Figure 4 The overall structure of the utility model is shown in FIG. Figure 4 ;

[0021] Figure 5 for Figure 4 A partial enlarged view of the middle A;

[0022] Description of the marks in the figure:

[0023] Workbench 1; workpiece 2; laser generator 3; laser head 4; gas storage tank 5; outlet pipe 6; support plate 7; manipulator 8; motor 9; rotating rod 10; bending rod 11; limiting rod 12; connecting block 13; slide plate 14; right-angle connecting plate 15; ultrasonic vibrator 16; bracket 17; pulley 18; guide rail 19; counterweight 20; ultrasonic generator 21; pillar 22; pressing plate 23; screw 24. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Example 1

[0027] like Figure 1-5 As shown, a synchronous ultrasonic impact device for assisting laser directional energy deposition includes an ultrasonic vibrator 16, the output end of the ultrasonic vibrator 16 is against the bottom of a workbench 1, a workpiece 2 is provided on the workbench 1, a laser head 4 is provided above the workpiece 2, the ultrasonic vibrator 16 is fixedly connected to a first fixing device, the laser head 4 is fixedly connected to a second fixing device, the first fixing device and the second fixing device are connected by a snap fit, and the second fixing device is connected to the output end of a manipulator 8;

[0028] The working principle of the above technical solution is: while the laser head 4 is welding the workpiece 2 on the workbench 1, the ultrasonic vibrator 16 is started and impacts the bottom of the workbench 1, driving the workpiece 2 on the workbench 1 to vibrate at high frequency, driving the metal liquid in the molten pool in the weld of the workpiece 2 to settle downward, expelling bubbles, and preventing air holes after cooling, which affect the appearance and strength. The manipulator 8 operates the laser head 4 to move through the second fixing device, and the second fixing device drives the ultrasonic vibrator 16 to follow the movement through the first fixing device, keeping the ultrasonic vibrator 16 directly below the laser head 4 at all times, so that the ultrasonic vibration effect is optimized.

[0029] Example 2

[0030] like Figure 1-5 As shown, the first fixing device includes a right-angle connecting plate 15, the right-angle connecting plate 15 is fixedly connected to the ultrasonic vibrator 16, the right-angle connecting plate 15 is slidably connected to the workbench 1, the right-angle connecting plate 15 is slidably connected to the slide 14, and the slide 14 is fixedly connected to the limit rod 12 through the connecting block 13;

[0031] The second fixing device includes a support plate 7, the support plate 7 is connected to the output end of the manipulator 8, one end of the support plate 7 is fixedly connected to the laser head 4, and the other end of the support plate 7 is fixed with a motor 9;

[0032] The output end of the motor 9 is connected to the rotating rod 10, and the rotating rod 10 is provided with two bent rods 11. The two bent rods 11 are respectively located on both sides of the connecting block 13 and are clamped between the limiting rod 12 and the slide 14;

[0033] The slide plate 14 is provided with a counterweight 20;

[0034] The working principle of the above technical solution is as follows: the manipulator 8 drives the support plate 7 to move, and drives the laser head 4 to move along the direction of the weld. Since the bent rod 11 below the support plate 7 is clamped between the limit rod 12 and the slide 14, the movement of the support plate 7 synchronously drives the slide 14 to move, drives the right-angle connecting plate 15 to slide on the workbench 1, and drives the ultrasonic vibrator 16 to follow the movement, so that the ultrasonic vibrator 16 is always kept directly below the laser head 4, so that the ultrasonic vibration effect is optimized;

[0035] When the manipulator 8 drives the support plate 7 to move up and down to adjust the distance between the laser head 4 and the workpiece 2, the support plate 7 drives the rotating rod 10 to move up or down, drives the bending rod 11 to move up or down, drives the limiting rod 12 and the connecting block 13 to move up or down, drives the slide plate 14 to move up or down, and the slide plate 14 and the right-angle connecting plate 15 slide;

[0036] When the ultrasonic vibrator 16 is no longer needed to perform ultrasonic vibration on the workpiece 2, the motor 9 is started to drive the rotating rod 10 to rotate, drive the bending rod 11 to rotate, and drive the bending rod 11 to move out from between the limit rod 12 and the slide 14. Under the gravity of the counterweight 20, the slide 14 drops to the lowest position. At this time, when the manipulator 8 drives the support plate 7 to move left and right, the support plate 7 will not drive the slide 14 and the right-angle connecting plate 15 to move, and thus will not drive the ultrasonic vibrator 16 to move;

[0037] When the ultrasonic vibrator 16 is reactivated to perform ultrasonic vibration on the workpiece 2, the manipulator 8 drives the support plate 7 to move to the top of the slide 14, and then drives the support plate 7 to descend to the preset position, and starts the motor 9 to drive the rotating rod 10 to rotate, and drives the bending rod 11 to rotate, and drives the bending rod 1 to be re-engaged between the limit rod 12 and the slide 14;

[0038] Therefore, the laser head 4 and the ultrasonic vibrator 16 can be linked together, and the liquid can quickly decompose and merge movements to adapt to different working scenarios.

[0039] Example 3

[0040] like Figure 1-5 As shown, the bending part of the right-angle connecting plate 15 is provided with a reinforcing rib;

[0041] The working principle of the above technical solution is: the reinforcing ribs can enhance the strength of the right-angle connecting plate 15 and prevent the right-angle connecting plate 15 from bending when moving quickly.

[0042] Example 4

[0043] like Figure 1-5 As shown, a bracket 17 is fixed to the lower end of the ultrasonic vibrator 16, and the bracket 17 slides on a guide rail 19 through a pulley 18, and the guide rail 19 is fixed to the lower end of the workbench 1;

[0044] The working principle of the above technical solution is: the friction force of the ultrasonic vibrator 16 during the movement is reduced by the pulley 18 and the guide rail 19.

[0045] Example 5

[0046] like Figure 1-5 As shown, the ultrasonic vibrator 16 is electrically connected to the ultrasonic generator 21, and the ultrasonic generator 21 is arranged on the side of the workbench 1;

[0047] The laser head 4 is optically connected to the laser generator 3, and the laser head 4 is connected to one end of the gas outlet pipe 6, and the other end of the gas outlet pipe 6 is connected to the gas storage tank 5. The laser generator 3 and the gas storage tank 5 are arranged on the side of the workbench 1;

[0048] The working principle of the above technical solution is: when the laser head 4 is welding, the gas storage tank 5 can release protective gas to the welding part through the gas outlet pipe 6 to prevent the molten metal from splashing.

[0049] Example 6

[0050] like Figure 1-5 As shown, the workpiece 2 is fixed on the workbench 1 by a fixing component, which includes a pillar 22. The pillar 22 is fixed on the workbench 1. A pressing piece 23 and a screw 24 are sleeved on the pillar 22. The front end of the pressing piece 23 is against the workpiece 2.

[0051] The working principle of the above technical solution is: the workpiece 2 is placed on the workbench 1, the pressing plate 23 is sleeved on the pillar 22, and the screw 24 is rotated downward from the upper end of the pillar 22 to squeeze the pressing plate 23, so that the front end of the pressing plate 23 is tightly pressed on the workpiece 2, thereby fixing the workpiece 2 on the workbench 1 to prevent it from moving at will.

[0052] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A synchronous ultrasonic impact device for assisting laser directed energy deposition, characterized in that: The invention comprises an ultrasonic vibrator (16), the output end of the ultrasonic vibrator (16) abuts against the bottom of a workbench (1), a workpiece (2) is provided on the workbench (1), a laser head (4) is provided above the workpiece (2), the ultrasonic vibrator (16) is fixedly connected to a first fixing device, the laser head (4) is fixedly connected to a second fixing device, the first fixing device and the second fixing device are connected in a snap-fit manner, and the second fixing device is connected to the output end of a manipulator (8).

2. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 1, characterized in that: The first fixing device comprises a right-angle connecting plate (15), the right-angle connecting plate (15) is fixedly connected to the ultrasonic vibrator (16), the right-angle connecting plate (15) is slidably connected to the workbench (1), the right-angle connecting plate (15) is slidably connected to the slide plate (14), and the slide plate (14) is fixedly connected to the limiting rod (12) via a connecting block (13).

3. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 2, characterized in that: Reinforcing ribs are provided at the bends of the right-angle connecting plates (15).

4. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 3, characterized in that: A counterweight (20) is provided on the slide plate (14).

5. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 4, characterized in that: The second fixing device comprises a support plate (7), the support plate (7) is connected to the output end of the manipulator (8), one end of the support plate (7) is fixedly connected to the laser head (4), and the other end of the support plate (7) is fixed with a motor (9).

6. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 5, characterized in that: The output end of the motor (9) is connected to the rotating rod (10). The rotating rod (10) is provided with two bent rods (11). The two bent rods (11) are respectively located on both sides of the connecting block (13) and are clamped between the limiting rod (12) and the slide plate (14).

7. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 6, characterized in that: A bracket (17) is fixed to the lower end of the ultrasonic vibrator (16). The bracket (17) slides on a guide rail (19) via a pulley (18). The guide rail (19) is fixed to the lower end of the workbench (1).

8. The synchronous ultrasonic impact device for assisting laser directed energy deposition according to claim 7, characterized in that: The ultrasonic vibrator (16) is electrically connected to an ultrasonic generator (21), and the ultrasonic generator (21) is arranged on the side of the workbench (1).

Images