A kind of converging focus ultrasonic cavitation shot pen device and method

Abstract

The application discloses a kind of converging focusing ultrasonic cavitation shot blasting device and method, device includes: frame;Ultrasonic cavitation generating assembly, frame inside is provided with converging focusing box, ultrasonic cavitation generating assembly is located converging focusing box top, the ultrasonic cavitation generating end of ultrasonic cavitation generating assembly extends into converging focusing box inside, and converging focusing box inside contains liquid;Workpiece clamping drive assembly, located converging focusing box below, workpiece clamping drive assembly is used to clamp and drive workpiece rotation, workpiece is located converging focusing box lower end liquid outlet directly below, and workpiece is closely attached to liquid outlet;Liquid recycling device, located workpiece clamping drive assembly below, and liquid recycling device is used to receive the liquid from liquid outlet and flow out.This application utilizes the converging focusing box of funnel type, and the dispersed cavitation bubble generated by ultrasonic cavitation generating device is converged, further realizes cavitation bubble migration, and improves the utilization rate of energy when cavitation bubble collapses.

Description

Technical Field

[0001] This application relates to the field of metal surface processing technology, and in particular to a convergent focusing ultrasonic cavitation shot peening device and method. Background Technology

[0002] With the development of technology, improving material properties is imperative. Shot peening, as the most common metal surface treatment technology, has advantages such as good practicality, wide applicability, and low cost. Its principle is to refine the grains and induce plastic deformation by impacting or striking the metal surface, introducing residual stress to achieve surface strengthening, thereby improving the fatigue performance of metal workpieces and extending their service life. However, traditional shot peening technology is limited by the high energy and large diameter of the shot, making it unable to achieve high-quality strengthening for special workpieces with complex curved shapes and small dimensions. Therefore, researching a shot peening process specifically for such special workpieces is imperative.

[0003] Ultrasonic cavitation is the phenomenon where, when ultrasound propagates in a liquid, the periodic sound pressure causes a local pressure drop, and when the pressure drops to a critical value, gas bubbles or cavitation forms within the liquid. The complete ultrasonic cavitation process includes the formation, development, and eventual collapse of bubbles. Collapse is accompanied by high-pressure shock waves, high-speed microjets, and localized high-temperature hotspots. This highly concentrated energy can generate extremely high impact pressure in localized areas of the target surface, causing plastic deformation.

[0004] However, ultrasonic cavitation is mainly used in energy, chemical, and pharmaceutical fields, while its application in the field of metal surface treatment technology is virtually nonexistent. Because the cavitation bubbles generated by ultrasonic cavitation are dispersed and lack general regularity, it is difficult to effectively control the cavitation cloud. Furthermore, acoustic cavitation bubbles have short lifespans and rapid collapse rates, failing to achieve concentrated energy utilization, resulting in low energy efficiency during cavitation bubble collapse. Therefore, there is a need to develop an ultrasonic cavitation shot peening device for special workpieces with complex curved shapes and small dimensions, and to improve the energy efficiency of cavitation bubble collapse. Summary of the Invention

[0005] This application provides a converged focusing ultrasonic cavitation shot peening device and method to solve the problem of low energy utilization rate of acoustic cavitation bubble collapse in the prior art.

[0006] On one hand, embodiments of this application provide a converged focusing ultrasonic cavitation shot peening device, comprising:

[0007] frame;

[0008] An ultrasonic cavitation generating component is installed inside a frame. Inside the frame, there is also a funnel-shaped manifold focusing box. The ultrasonic cavitation generating component is located above the manifold focusing box, and the ultrasonic cavitation generating end of the ultrasonic cavitation generating component extends into the manifold focusing box, which contains liquid.

[0009] The workpiece clamping drive assembly is located inside the frame and below the manifold focusing box. The workpiece clamping drive assembly is used to clamp and drive the workpiece to rotate. After the workpiece clamps the workpiece, the workpiece is located directly below the liquid outlet at the lower end of the manifold focusing box and the workpiece is in close contact with the liquid outlet.

[0010] The liquid recycling device is located below the workpiece clamping drive assembly and is used to collect the liquid flowing out from the outlet.

[0011] On the other hand, embodiments of this application also provide a converged-focusing ultrasonic cavitation shot peening method, including:

[0012] The ultrasonic cavitation generator is activated to produce cavitation bubbles in the liquid;

[0013] A workpiece clamping and driving component is used to clamp and drive the workpiece to rotate, and the cavitation bubble cloud formed by the cavitation bubble strengthens the surface of the workpiece.

[0014] The liquid flowing out of the outlet is collected by a liquid recycling device located below the workpiece clamping drive assembly.

[0015] The convergent focusing ultrasonic cavitation shot peening device and method of this application have the following advantages:

[0016] 1. By utilizing a funnel-shaped converging and focusing box, the dispersed cavitation bubbles generated by the ultrasonic cavitation generator are converged under the action of liquid gravity, further realizing the migration of cavitation bubbles. By adjusting the rocker arm to drive the lead screw to rotate, the distance between the ultrasonic cavitation generator and the workpiece at the bottom of the converging and focusing box can be changed, thereby realizing the adjustable and controllable energy utilization rate when the cavitation bubbles collapse.

[0017] 2. The ultrasonic cavitation generator can generate cavitation bubbles in the confluence liquid, forming a cavitation cloud. The energy generated when the cavitation bubbles collapse is then applied to special areas on the surface of workpieces with complex curved shapes and small dimensions, generating extremely high impact pressure. This causes plastic deformation of the surface, grain refinement, and consequently improves the fatigue performance of the metal workpiece and extends its service life.

[0018] 3. It can realize the efficient utilization of liquid media through circulation. At the same time, by adjusting the speed of the stepper motor, the shot peening strengthening effect of the rotating workpiece can be changed, saving time and cost. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of a convergent focusing ultrasonic cavitation shot peening device provided in an embodiment of this application;

[0021] Figure 2 A side view of a convergent focusing ultrasonic cavitation shot peening device provided in this application embodiment;

[0022] Figure 3 A schematic diagram of the framework provided in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the transmission mechanism provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the structure of the ultrasonic cavitation generating component provided in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the workpiece clamping drive assembly provided in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the liquid recycling device provided in an embodiment of this application.

[0027] Reference numerals: 1-Frame, 2-Transmission mechanism, 3-Ultrasonic cavitation generating assembly, 4-Ultrasonic cavitation cooling device, 5-Workpiece clamping drive assembly, 6-Liquid recycling device, 1-1-First profile rod, 1-2-Third slider baffle, 1-3-First side plate, 1-4-First slider baffle, 1-5-Second side plate, 1-6-Second profile rod, 1-7-Third side plate, 1-8-Second slider baffle, 1- 9-Third profile rod, 1-10-Fourth side plate, 1-11-Control box, 1-12-Fourth profile rod, 1-13-Merge focusing box, 1-15-Fifth profile rod, 1-16-Sixth profile rod, 1-17-Seventh profile rod, 1-18-Eighth profile rod, 1-19-Ninth profile rod, 1-20-Tenth profile rod, 2-1-First slider, 2-2-Vertical transmission screw, 2-3-First rocker arm 2-4-Fixed shaft, 2-5-Second slider, 3-1-Ultrasonic cavitation generator, 3-2-Fixed crossbar, 4-1-Gas conduit, 4-2-Air compressor, 5-1-First limiting plate, 5-2-First guide shaft, 5-3-First support slider, 5-4-Stepper motor, 5-5-Main shaft, 5-6-Second support slider, 5-7-Coupling, 5-8-Workpiece, 5-9-Top rod, 5-10-Third support slider, 5-11-Third guide shaft, 5-12-Third limiting plate, 5-13-Third rocker arm, 5-14-Second transverse transmission screw, 5-15-Fourth guide shaft, 5-16-Fourth limiting plate, 5-17-Second limiting plate, 5-18-First transverse transmission screw, 5-19-Second guide shaft, 5-20-Second rocker arm, 6-1-Liquid pump, 6-2-Liquid collection tank, 6-3-Liquid conduit. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] Figure 1-7 This is a schematic diagram of a converged-focusing ultrasonic cavitation shot peening device provided in an embodiment of this application. This application provides a converged-focusing ultrasonic cavitation shot peening device, comprising:

[0030] Framework 1;

[0031] An ultrasonic cavitation generating component 3 is installed inside the frame 1. Inside the frame 1, there is also a funnel-shaped manifold focusing box 1-13. The ultrasonic cavitation generating component 3 is located above the manifold focusing box 1-13, and the ultrasonic cavitation generating end of the ultrasonic cavitation generating component 3 extends into the manifold focusing box 1-13. The manifold focusing box 1-13 contains liquid.

[0032] The workpiece clamping drive assembly 5 is set inside the frame 1 and located below the manifold focusing box 1-13. The workpiece clamping drive assembly 5 is used to clamp and drive the workpiece 5-8 to rotate. After the workpiece clamping drive assembly 5 clamps the workpiece 5-8, the workpiece 5-8 is located directly below the liquid outlet at the lower end of the manifold focusing box 1-13, and the workpiece 5-8 is in close contact with the liquid outlet.

[0033] The liquid recycling device 6 is located below the workpiece clamping drive assembly 5. The liquid recycling device 6 is used to collect the liquid flowing out from the outlet.

[0034] For example, frame 1 includes ten aluminum alloy profile rods, four tempered glass side panels, and three slider baffles. The ten profile rods include four upright profiles and six crossbar profiles. The four upright profiles are designated as first profile rod 1-1, second profile rod 1-6, third profile rod 1-9, and fourth profile rod 1-12, all vertically arranged. The four upright profiles are arranged in a prismatic pattern, and adjacent upright profiles are fixedly connected together by adhesive side panels to form a cubic columnar structure. The six horizontal profiles are profile 1-15 (fifth profile), 1-16 (sixth profile), 1-17 (seventh profile), 1-18 (eighth profile), 1-19 (ninth profile), and 1-20 (tenth profile). All six horizontal profiles are horizontal. Profiles 1-15, 1-16, 1-19, and 1-20 are horizontally fixed to the lower ends of the four vertical profiles. Profiles 1-17 and 1-18 are horizontally fixed to profiles 1-15 and 1-19.

[0035] Four side plates are located on the four sides of the four column profiles, namely the first side plate 1-3, the second side plate 1-5, the third side plate 1-7, and the fourth side plate 1-10. All four side plates are vertically installed and bonded to the four column profiles. Two of the three slider baffles are located on the top of the column profiles, namely the first slider baffle 1-4 and the second slider baffle 1-8. These two slider baffles are diagonally positioned and fixedly connected to the column profile and side plate at the included angle. The third slider baffle 1-2 is located directly below the first slider baffle 1-4, with a certain distance between them, and is fixedly connected to the column profile and side plate at the included angle.

[0036] The converging and focusing box 1-13 includes a square hollow glass panel and a funnel-shaped tempered glass panel bonded together. The outer side of the square hollow glass panel is bonded to the four side panels in the frame 1, and the lower end of the funnel-shaped tempered glass panel is the liquid outlet. Since the workpiece 5-8 needs to rotate, there is a certain gap between it and the liquid outlet, through which liquid can flow out. The flowing liquid naturally falls into the liquid recycling device 6.

[0037] In one possible embodiment, it further includes: a transmission mechanism 2 disposed on the inner side of the frame 1, the ultrasonic cavitation generating component 3 being connected to the transmission mechanism 2, and the transmission mechanism 2 being used to adjust the height of the ultrasonic cavitation generating component 3.

[0038] For example, the transmission mechanism 2 includes: a vertical transmission screw 2-2, which is vertically rotatably disposed on the inner side of the frame 1, and a first rocker arm 2-3 is disposed at the upper end of the vertical transmission screw 2-2; a first slider 2-1, which is screwed onto the outer side of the vertical transmission screw 2-2, and an ultrasonic cavitation generating component 3 is connected to the side of the first slider 2-1.

[0039] Furthermore, the upper and lower ends of the vertical transmission screw 2-2 are respectively rotatably mounted in the first slider baffle 1-4 and the third slider baffle 1-2. When the first rocker arm 2-3 rotates around the axis, it will also drive the vertical transmission screw 2-2 to rotate. However, under the restriction of the ultrasonic cavitation generating component 3, the first slider 2-1 cannot rotate with the vertical transmission screw 2-2. Therefore, it will move up and down along the axial direction on the vertical transmission screw 2-2, thereby driving the ultrasonic cavitation generating component 3 to move up and down, changing the distance between the ultrasonic cavitation generating component 3 and the workpiece 5-8, so that the distance between the two is kept within 20mm.

[0040] In the embodiments of this application, the transmission mechanism 2 further includes a fixed shaft 2-4 and a second slider 2-5. The fixed shaft 2-4 is an optical axis, and its upper end is fixedly disposed on the end face of the second slider baffle 1-8. The second slider 2-5 is slidably disposed on the fixed shaft 2-4. The ultrasonic cavitation generating component 3 is connected to the side of the second slider 2-5.

[0041] The ultrasonic cavitation generating assembly 3 includes an ultrasonic cavitation generating device 3-1 and a fixed crossbar 3-2. One end of the fixed crossbar 3-2 is fixedly connected to the ultrasonic cavitation generating device 3-1, and the other end is connected to the first slider 2-1 and the second slider 2-5.

[0042] The upper end of the ultrasonic cavitation generating device 3-1 is connected to an ultrasonic generator, and the lower end is a flat circular radiating surface. This radiating surface extends into the liquid-containing converging and focusing box 1-13 to generate cavitation.

[0043] In one possible embodiment, it further includes: an ultrasonic cavitation cooling device 4, which is disposed on the frame 1 and is connected to the ultrasonic cavitation generating component 3 for cooling the ultrasonic cavitation generating component 3.

[0044] For example, the ultrasonic cavitation cooling device 4 includes an air compressor 4-2 and a gas duct 4-1. The air compressor 4-2 is mounted on the frame 1 and is connected to the ultrasonic generator at the upper end of the ultrasonic cavitation generating device 3-1 through the gas duct 4-1. The heat generated by the ultrasonic generator when it is working is transferred to the air compressor 4-2 through the gas duct 4-1 so that the heat can be quickly discharged and the ultrasonic generator can operate normally.

[0045] In one possible embodiment, the workpiece clamping drive assembly 5 includes: a first limiting plate 5-1 and a second limiting plate 5-17, both disposed inside the frame 1, and the first limiting plate 5-1 and the second limiting plate 5-17 are disposed opposite to each other; a first transverse transmission screw 5-18, rotatably disposed between the first limiting plate 5-1 and the second limiting plate 5-17, and a second rocker arm 5-20 disposed at one end of the first transverse transmission screw 5-18; a first guide shaft 5-2 and a second guide shaft 5-19, disposed parallel to the first limiting plate 5-1 and the second limiting plate 5-17. Between the two limiting plates 5-17, the first guide shaft 5-2 and the second guide shaft 5-19 are parallel to the first transverse transmission screw 5-18; the first support slider 5-3 is screwed to the outer surface of the first transverse transmission screw 5-18, and both the first guide shaft 5-2 and the second guide shaft 5-19 slide through the first support slider 5-3; the stepper motor 5-4 is set on the side of the first support slider 5-3, and the end of the main shaft 5-5 of the stepper motor 5-4 is provided with a coupling 5-7, which is used to clamp the workpiece 5-8.

[0046] For example, the first guide shaft 5-2 and the second guide shaft 5-19 are located on both sides of the first transverse transmission screw 5-18 to ensure that the first support slider 5-3 does not rotate with the first transverse transmission screw 5-18 and to limit the sliding direction of the first support slider 5-3. When the second rocker arm 5-20 rotates around its axis, it will drive the first transverse transmission screw 5-18 to rotate, thereby causing the first support slider 5-3 to move left and right to facilitate adjustment of the horizontal position of the workpiece 5-8.

[0047] Furthermore, the workpiece clamping drive assembly 5 also includes a second support slider 5-6, screwed onto the outer surface of the first transverse transmission screw 5-18, with both the first guide shaft 5-2 and the second guide shaft 5-19 sliding through the second support slider 5-19, and the main shaft 5-5 passing through the second support slider 5-19. The second support slider 5-6 provides support for the main shaft 5-5, enabling more stable rotation of the main shaft 5-5.

[0048] In one possible embodiment, the workpiece clamping drive assembly 5 further includes: a third limiting plate 5-12 and a fourth limiting plate 5-16, both disposed inside the frame 1, and the third limiting plate 5-12 and the fourth limiting plate 5-16 are arranged opposite to each other; a second transverse transmission screw 5-14, rotatably disposed between the third limiting plate 5-12 and the fourth limiting plate 5-16, the second transverse transmission screw 5-14 being parallel to the first transverse transmission screw 5-18, and having a third rocker arm 5-13 at one end; a third guide shaft 5-11 and a fourth guide shaft 5-15. The third guide shaft 5-11 and the fourth guide shaft 5-15 are parallel to the second transverse transmission screw 5-14 and are arranged between the third limiting plate 5-12 and the fourth limiting plate 5-16. The third support slider 5-10 is screwed to the outer surface of the second transverse transmission screw 5-14 and both the third guide shaft 5-11 and the fourth guide shaft 5-15 slide through the third support slider 5-10. The push rod 5-9 is arranged on the side of the third support slider 5-10 and is coaxial with the coupling 5-7 and is arranged opposite to the coupling 5-7.

[0049] For example, the push rod 5-9 is rotatably mounted on the third support slider 5-10, and its end facing the coupling 5-7 is a pointed end. When the coupling 5-7 clamps the workpiece 5-8, the third rocker arm 5-13 is rotated to make the push rod 5-9 abut against the workpiece 5-8. When the workpiece 5-8 rotates, the push rod 5-9 also rotates together.

[0050] In one possible embodiment, the liquid recycling device 6 includes: a liquid collection tank 6-2 for collecting liquid flowing out from the outlet; a liquid pump 6-1 disposed at the bottom of the liquid collection tank 6-2, and a liquid conduit 6-3 disposed at the outlet end of the liquid pump 6-1, the end of the liquid conduit 6-3 extending into the interior of the confluence focusing box 1-13.

[0051] For example, the liquid pump 6-1 re-transports the liquid flowing into the liquid collection tank 6-2 to the manifold focusing box 1-13 so that there is always liquid in the manifold focusing box 1-13 during operation, ensuring that the ultrasonic cavitation generator 3-1 can normally perform surface strengthening treatment on the workpiece 5-8.

[0052] In one possible embodiment, it further includes: a control box 1-11, which is disposed on the frame 1, and the control box 1-11 is electrically connected to the ultrasonic cavitation generating component 3, the workpiece clamping drive component 5 and the liquid recycling device 6 respectively.

[0053] For example, the control box 1-11 is equipped with a controller, which is electrically connected to the ultrasonic cavitation generating assembly 3, specifically the ultrasonic generator, the stepper motor 5-4, the air compressor 4-2 and the liquid pump 6-1, to control the working status of these electrical devices.

[0054] This application also provides a method for convergent focused ultrasonic cavitation shot peening, which includes the following steps:

[0055] Start the ultrasonic cavitation generating component 3 to generate cavitation bubbles in the liquid;

[0056] The workpiece clamping drive assembly 5 is used to clamp and drive the workpiece 5-8 to rotate, and the cavitation bubble cloud formed by the cavitation bubble strengthens the surface of the workpiece 5-8.

[0057] The liquid is collected by the liquid recycling device 6 located below the workpiece clamping drive assembly 5 from the liquid outlet.

[0058] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0059] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A confluence-focusing ultrasonic cavitation shot peening device, characterized in that, include: Includes: framework (1); An ultrasonic cavitation generating component (3) is disposed inside the frame (1). A funnel-shaped manifold focusing box (1-13) is also disposed inside the frame (1). The ultrasonic cavitation generating component (3) is located above the manifold focusing box (1-13), and the ultrasonic cavitation generating end of the ultrasonic cavitation generating component (3) extends into the manifold focusing box (1-13). The manifold focusing box (1-13) contains liquid, and a liquid outlet is provided at the lower end of the manifold focusing box (1-13). The workpiece clamping drive assembly (5) is disposed inside the frame (1) and located below the confluence focusing box (1-13). The workpiece clamping drive assembly (5) is used to clamp and drive the workpiece (5-8) to rotate. After the workpiece clamping drive assembly (5) clamps the workpiece (5-8), the workpiece (5-8) is located directly below the liquid outlet and forms a gap between it and the liquid outlet for liquid to flow out and is set close to the liquid outlet. The liquid recycling device (6) is located below the workpiece clamping drive assembly (5). The liquid recycling device (6) is used to collect the liquid flowing out from the liquid outlet and transport the liquid back into the confluence focusing box (1-13).

2. The convergent focusing ultrasonic cavitation shot peening device according to claim 1, characterized in that, Also includes: A transmission mechanism (2) is provided on the inner side of the frame (1). The ultrasonic cavitation generating component (3) is connected to the transmission mechanism (2). The transmission mechanism (2) is used to adjust the height of the ultrasonic cavitation generating component (3).

3. The convergent focusing ultrasonic cavitation shot peening device according to claim 2, characterized in that, The transmission mechanism (2) includes: A vertical transmission screw (2-2) is vertically rotatably mounted on the inner side of the frame (1), and a first rocker arm (2-3) is mounted on the upper end of the vertical transmission screw (2-2). The first slider (2-1) is screwed onto the outer surface of the vertical transmission screw (2-2), and the ultrasonic cavitation generating component (3) is connected to the side of the first slider (2-1).

4. The convergent focusing ultrasonic cavitation shot peening device according to claim 1, characterized in that, Also includes: An ultrasonic cavitation cooling device (4) is installed on the frame (1). The ultrasonic cavitation cooling device (4) is connected to the ultrasonic cavitation generating component (3) and is used to cool the ultrasonic cavitation generating component (3).

5. The convergent focusing ultrasonic cavitation shot peening device according to claim 1, characterized in that, The workpiece clamping drive assembly (5) includes: The first limiting plate (5-1) and the second limiting plate (5-17) are both disposed inside the frame (1), and the first limiting plate (5-1) and the second limiting plate (5-17) are disposed opposite to each other; The first transverse transmission screw (5-18) is rotatably disposed between the first limiting plate (5-1) and the second limiting plate (5-17), and a second rocker arm (5-20) is provided at one end of the first transverse transmission screw (5-18). The first guide shaft (5-2) and the second guide shaft (5-19) are arranged in parallel between the first limiting plate (5-1) and the second limiting plate (5-17), and the first guide shaft (5-2) and the second guide shaft (5-19) are parallel to the first transverse transmission screw (5-18). The first support slider (5-3) is screwed onto the outer surface of the first transverse transmission screw (5-18), and the first guide shaft (5-2) and the second guide shaft (5-19) both slide through the first support slider (5-3). A stepper motor (5-4) is disposed on the side of the first support slider (5-3). A coupling (5-7) is provided at the end of the spindle (5-5) of the stepper motor (5-4). The coupling (5-7) is used to clamp the workpiece (5-8).

6. The convergent focusing ultrasonic cavitation shot peening device according to claim 5, characterized in that, The workpiece clamping drive assembly (5) also includes: The second support slider (5-6) is screwed onto the outer surface of the first transverse transmission screw (5-18), and the first guide shaft (5-2) and the second guide shaft (5-19) both slide through the second support slider (5-6), and the main shaft (5-5) passes through the second support slider (5-6).

7. The convergent focusing ultrasonic cavitation shot peening device according to claim 5, characterized in that, The workpiece clamping drive assembly (5) also includes: The third limiting plate (5-12) and the fourth limiting plate (5-16) are both disposed inside the frame (1), and the third limiting plate (5-12) and the fourth limiting plate (5-16) are disposed opposite to each other; The second transverse transmission screw (5-14) is rotatably disposed between the third limiting plate (5-12) and the fourth limiting plate (5-16). The second transverse transmission screw (5-14) is parallel to the first transverse transmission screw (5-18), and a third rocker arm (5-13) is provided at one end. The third guide shaft (5-11) and the fourth guide shaft (5-15) are arranged in parallel between the third limiting plate (5-12) and the fourth limiting plate (5-16), and the third guide shaft (5-11) and the fourth guide shaft (5-15) are parallel to the second transverse transmission screw (5-14); The third support slider (5-10) is screwed onto the outer surface of the second transverse transmission screw (5-14), and the third guide shaft (5-11) and the fourth guide shaft (5-15) both slide through the third support slider (5-10). A push rod (5-9) is disposed on the side of the third support slider (5-10). The push rod (5-9) is coaxial with the coupling (5-7) and is disposed opposite to the coupling (5-7).

8. The convergent focusing ultrasonic cavitation shot peening device according to claim 1, characterized in that, The liquid recycling device (6) includes: A liquid collection tank (6-2) is used to collect the liquid flowing out from the outlet. A liquid pump (6-1) is installed at the bottom of the liquid collection tank (6-2). A liquid conduit (6-3) is provided at the outlet end of the liquid pump (6-1). The end of the liquid conduit (6-3) extends into the interior of the manifold focusing box (1-13).

9. The convergent focusing ultrasonic cavitation shot peening device according to claim 1, characterized in that, Also includes: The control box (1-11) is mounted on the frame (1) and is electrically connected to the ultrasonic cavitation generating assembly (3), the workpiece clamping drive assembly (5) and the liquid recycling device (6), respectively.

10. A method for converged-focusing ultrasonic cavitation shot peening, characterized in that, The method is applied to the apparatus according to any one of claims 1-9, comprising: Start the ultrasonic cavitation generator (3) to generate cavitation bubbles in the liquid; The workpiece (5-8) is clamped and driven to rotate by the workpiece clamping drive assembly (5), and the cavitation bubble cloud formed by the cavitation bubble strengthens the surface of the workpiece (5-8). The liquid flowing out of the outlet is collected by a liquid recycling device (6) located below the workpiece clamping drive assembly (5).

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