Ultrasonic assisted acoustic precision structure micro-hole cleaning device

Abstract

The present application relates to the technical field of ultrasonic cleaning device, specifically relates to ultrasonic auxiliary acoustic precision structure piece little hole cleaning device, including cleaning bin, the ultrasonic generator is provided with on the cleaning bin through the mounting bracket, the ultrasonic generator is connected with ultrasonic tube, and the ultrasonic tube is equipped with the matrix distribution cleaning mechanism, it is characterized in that, the cleaning mechanism includes the ultrasonic branch pipe of rotationally connected on the ultrasonic tube, and the ultrasonic branch pipe is rotationally connected with the grinding ball.The impact wave and microjet produced by cavitation effect caused by ultrasonic wave, the flowability of abrasive fluid is enhanced, so that the abrasive particles can efficiently remove burrs and attachments when contacting with dirt, reduce cleaning time, make the cleaning process more efficient, especially suitable for complex and narrow hole.Meanwhile the grinding ball rotates under the flow action of bearing abrasive fluid, changes the incidence angle and reflection path of sound wave, thereby optimizes the propagation of sound wave in abrasive fluid.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic cleaning devices, and more specifically to an ultrasonic-assisted cleaning device for micro-holes in acoustic precision structural components. Background Technology

[0002] In modern manufacturing, with the continuous advancement of science and technology, higher requirements are placed on the precision and surface quality of acoustic precision structural components, especially in the machining of micro-holes on the surface of these components, which has become a technical challenge. These holes are commonly used in assembly, fluid channels, or acoustic applications, and their performance directly affects the overall function and reliability of the product. If burrs or micro-residues exist inside or outside the holes, it will not only reduce the quality of the product but may also lead to product failure during use.

[0003] Existing methods for cleaning micro-holes in acoustic precision structural components generally involve abrasive fluids. Abrasive fluids typically consist of a liquid medium (such as water or solvents) and abrasive particles (such as sand or ceramic particles) suspended within it. These abrasive particles are transported to the micro-holes that need cleaning through the flow of the liquid medium. The flowing abrasive fluid causes the abrasive particles to exert impact and cutting forces on the dirt or burrs, and the dirt or burrs are knocked away and ground off through friction and impact.

[0004] A search revealed a prior art patent, CN201910712652.0, entitled "A Clean Abrasive Jet Device for Easy and Uniform Abrasive Mixing," which specifically includes a target fixing seat, an abrasive mixing mechanism, and an X-axis translation component. A slide rail is welded to the outer right side of the target fixing seat, and a slide rod is slidably connected to the outer side of the slide rail. An adjusting screw is threaded to the right side of the slide rod, and a Y-axis lifting component is installed at the upper end of the slide rod. The abrasive mixing mechanism is installed at the lower right corner of the target fixing seat.

[0005] In the above scheme, the abrasive liquid is mainly prepared in advance by setting the abrasive mixing mechanism. When the first motor interacts with the stirring rod, it can not only accelerate the mixing of the abrasive liquid in the mixing box, but also make the abrasive liquid more uniformly mixed, which is conducive to improving the uniformity of the abrasive jet, thereby maintaining the stability of the abrasive jet cutting ability and thus maintaining the flatness of the cut.

[0006] However, in traditional cleaning methods, due to the complex pore shapes and depths of acoustic precision structural components, the fluid may not be able to fully penetrate into the depths of the pores or reach complex blind areas, resulting in the residue of dirt and burrs. In addition, in traditional methods, the abrasive fluid is generally driven by pressure, and it is prone to settling under static or low flow conditions. This results in some areas having higher abrasive density and others having lower density, causing uneven distribution of the abrasive fluid within the acoustic precision structural components, thus leading to uneven grinding results.

[0007] Therefore, an ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components is proposed to solve the aforementioned problems. Summary of the Invention

[0008] Technical problems to be solved

[0009] To address the aforementioned shortcomings of existing technologies, this invention provides an ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components, which can solve the problem in existing technologies where abrasive fluid cannot enter and be evenly distributed in the complex hole-shaped grooves of acoustic precision structural components.

[0010] Technical solution

[0011] To achieve the above objectives, the present invention provides the following technical solution:

[0012] This invention provides an ultrasonic-assisted cleaning device for micro-holes in acoustic precision structural components, comprising a cleaning chamber, an ultrasonic generator mounted on the cleaning chamber via a mounting bracket, an ultrasonic tube connected to the ultrasonic generator, and a matrix-distributed cleaning mechanism on the ultrasonic tube. The cleaning mechanism is characterized by comprising an ultrasonic branch tube rotatably connected to the ultrasonic tube, and a grinding ball rotatably connected to the ultrasonic branch tube. The grinding ball protrudes from the surface of the ultrasonic branch tube, and its surface, where it is inserted into the ultrasonic branch tube, has through holes. Sound waves generated by the ultrasonic generator enter the grinding ball and are focused to the central region, generating enhanced impact force and micro-jets acting on the abrasive fluid. A convex plate A is provided on the surface of the grinding ball. Under the flow of the abrasive fluid, the convex plate A pushes the grinding ball to rotate, changing the incident angle of the sound waves entering the grinding ball and the reflection angle and reflection path of the sound waves within the grinding ball.

[0013] Furthermore, the convex plate A is designed in a cross shape.

[0014] Furthermore, the surface of the ultrasonic branch pipe is connected to circumferentially distributed convex plates B.

[0015] Furthermore, the grinding balls are arranged in multiple groups in a spiral pattern on the surface of the ultrasonic branch pipe.

[0016] Furthermore, the ultrasonic branch pipe is also connected to a vertical pipe. The upper end of the vertical pipe passes through the ultrasonic tube and is connected to a rotary joint. The rotary joint is connected to the air duct installed on the fan. A nozzle is provided on the vertical pipe. The nozzle is inserted into the grinding ball through a through hole. The surface of the grinding ball is provided with uniformly distributed spray holes.

[0017] Furthermore, a fixed rod is connected to the inner wall of the grinding ball, and a guide plate is rotatably connected to the fixed rod. The guide plate is Y-shaped, and two sets of baffles are connected to the inner wall of the grinding ball. The two sets of baffles are distributed on the upper and lower sides of the guide plate, and two sets of air ducts are formed between the guide plate and the baffles.

[0018] Furthermore, the front side of the guide plate is tangent to the inner wall of the grinding ball, and a counterweight is connected to the rear side of the guide plate.

[0019] Furthermore, the nozzle is configured as a vortex-shaped hole.

[0020] Beneficial effects

[0021] The technical solution provided by this invention has the following advantages compared with the prior art:

[0022] This invention utilizes the cavitation effect generated by the sound waves produced by an ultrasonic generator to create shock waves and microjets, enhancing the fluidity of the abrasive fluid. This allows the abrasive particles to efficiently remove burrs and deposits upon contact with dirt, reducing cleaning time and making the cleaning process more efficient, especially suitable for complex and narrow channels. Simultaneously, the grinding ball rotates under the influence of the abrasive fluid flow, altering the incident angle and reflection path of the sound waves, thereby optimizing the propagation of the sound waves within the abrasive fluid. This dynamic design ensures that the sound waves can cover a wider area, particularly inside complex-shaped micro-holes.

[0023] Furthermore, the use of multiple sets of spirally distributed grinding balls forces the abrasive fluid into the generated spiral flow field, which helps improve the mixing of the abrasive fluid and the uniformity of abrasive distribution. The integrated duct system and rotating nozzles further optimize the flowability and distribution of the abrasive fluid, making it suitable for various production environments. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0025] Figure 1 This is a schematic diagram of the cleaning mechanism structure in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the cleaning device structure in an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the internal structure of the cleaning mechanism in an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the grinding ball in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the inner side of the grinding ball structure in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the external structure of the grinding ball in an embodiment of the present invention;

[0031] Figure 7 This is a schematic cross-sectional view of the grinding ball structure in an embodiment of the present invention.

[0032] The labels in the diagram represent: 1. Cleaning chamber; 2. Mounting frame; 3. Ultrasonic generator; 4. Ultrasonic tube; 5. Cleaning mechanism; 501. Ultrasonic branch pipe; 502. Grinding ball; 503. Through hole; 504. Protruding plate A; 505. Protruding plate B; 506. Vertical pipe; 507. Nozzle; 508. Rotary joint; 509. Spray hole; 510. Fixing rod; 511. Guide plate; 512. Counterweight; 513. Baffle; 514. Air duct; 6. Fixing clamp; 7. Air pipe. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] The present invention will be further described below with reference to embodiments.

[0038] Example:

[0039] Please refer to the appendix. Figure 1-7 This solution proposes an ultrasonic-assisted cleaning device for micro-holes in acoustic precision structural components, including a cleaning chamber 1 for filling with abrasive fluid. The cleaning chamber 1 is equipped with matrix-distributed fixing clamps 6 for clamping and fixing the acoustic precision structural components. Figure 2 The cleaning chamber 1 shown is in the open state of the top cover. In use, the acoustic precision structure is installed on the fixing fixture 6 and the top of the cleaning chamber 1 is sealed. Under pressure, the abrasive fluid will move relative to the surface of the acoustic precision structure inside the cleaning chamber 1, producing micro-cutting, grinding and polishing effects.

[0040] The difference lies in the mounting structure. An ultrasonic generator 3 is mounted on the cleaning chamber 1 via a mounting bracket 2. An ultrasonic tube 4 is mounted at the lower end of the ultrasonic generator 3, and cleaning mechanisms 5 are mounted in a matrix arrangement on the ultrasonic tube 4. Each set of fixing clamps 6 is correspondingly positioned on a set of fixing clamps 6. When the acoustic precision structural component needs cleaning, it is placed on the fixing clamps 6 and clamped in place. The ultrasonic generator 3 is then controlled to rise and fall on the mounting bracket 2, allowing the cleaning mechanisms 5 to insert into the abrasive fluid within the tiny pores on the surface of the acoustic precision structural component.

[0041] Furthermore, during the cleaning of the acoustic precision structural component, the ultrasonic waves generated by the ultrasonic generator 3 are transmitted to the cleaning mechanism 5 through the ultrasonic tube 4. These ultrasonic waves are then transmitted through the cleaning mechanism 5 to the abrasive fluid within the tiny pores on the surface of the acoustic precision structural component. During this process, the cavitation bubbles generated by the ultrasonic waves collapse, producing powerful shock waves and micro-jets. These micro-jets and shock waves propel the abrasive particles, giving them higher speed and impact energy. This allows the abrasive particles to cut and grind more effectively when in contact with burrs, accelerating burr removal and stain cleaning.

[0042] Meanwhile, the vibration of ultrasound can make it easier for viscous abrasive fluid to penetrate into complex and narrow geometric structures, such as the bottom of acoustic channels, cross holes, deep grooves and other areas where burrs are prone to occur inside acoustic precision structural parts; this allows the abrasive to come into more direct contact with hidden burrs and stains, and avoids the abrasive fluid from staying only near the opening.

[0043] Specifically, the cleaning mechanism 5 includes an ultrasonic branch pipe 501 connected to the ultrasonic tube 4. The ultrasonic branch pipe 501 and the ultrasonic tube 4 are internally connected, allowing the sound waves generated by the ultrasonic generator 3 to enter the interior of the ultrasonic branch pipe 501 through the ultrasonic tube 4, and then act on the abrasive fluid wrapped around the surface of the ultrasonic branch pipe 501. The surface of the ultrasonic branch pipe 501 is provided with an opening, and a grinding ball 502 is rotatably connected inside the opening. The outside of the grinding ball 502 protrudes from the surface of the ultrasonic branch pipe 501. At the same time, the interior of the grinding ball 502 is hollow, and the side surface of the grinding ball 502 inserted inside the ultrasonic branch pipe 501 is provided with a through hole 503, so that the sound waves inside the ultrasonic branch pipe 501 can enter the grinding ball 502 through the through hole 503.

[0044] The hemispherical protrusions on the outside of the grinding ball 502 are inserted into the abrasive fluid, acting like a lens to focus sound waves onto the central region of the hemispherical protrusion. This increases the sound wave intensity in that region, generating stronger impact force and micro-jets. Consequently, the abrasive fluid achieves greater impact force when colliding with the inner wall of the acoustic precision structure. This enhanced impact force improves the grinding effect of the abrasive fluid on the surface of the acoustic precision structure, making the removal of burrs and residues more effective. Simultaneously, sound waves undergo partial reflection and interference within the grinding ball 502, generating a complex sound wave field. This results in more uniform sound wave dispersion within the grinding ball 502, contributing to the uniform distribution of the abrasive fluid within the micro-grooves of the acoustic precision structure, thus ensuring effective grinding of all corners.

[0045] The outer surface of the grinding ball 502 is connected to a convex plate A504, which is arranged in a cross shape. When the grinding ball 502 improves the flowability of the abrasive fluid under the action of sound waves, it makes it easier to flow into and fill the complex geometry of the acoustic precision structure, thereby improving the overall processing efficiency and effect.

[0046] Meanwhile, during the flow of the abrasive fluid, the grinding ball 502 is pushed to rotate on the ultrasonic branch pipe 501 by the convex plate A504. This means that the position and orientation of the grinding ball 502 relative to the ultrasonic branch pipe 501 are dynamically changing. This causes the incident angle, reflection angle and reflection path of the sound wave to constantly change when the sound wave propagates from the ultrasonic branch pipe 501 through the through hole 503 into the grinding ball 502. This makes the direction of the reflected wave more complex and diffuse, which can continuously bring the fluid area where cavitation is more likely to occur to the place with high sound intensity, maintain or enhance the intensity of the cavitation effect, change the fluid boundary layer, and make the sound energy more likely to penetrate into a deeper area.

[0047] This optimizes the mixing state, abrasive distribution, and flow characteristics within the abrasive fluid, thereby indirectly or directly enhancing the effectiveness, uniformity, and coverage of the acoustic cavitation effect and abrasive cutting action. Ultimately, it improves the efficiency and effectiveness of the entire ultrasonic-assisted abrasive fluid deburring and cleaning process; it is particularly suitable for precision workpieces with complex shapes or internal structures.

[0048] The ultrasonic branch pipe 501 is also rotatably connected to the ultrasonic tube 4. The surface of the ultrasonic branch pipe 501 is connected with circumferentially distributed protrusions B505, which causes the abrasive fluid to drive the ultrasonic branch pipe 501 to rotate on the ultrasonic tube 4 during the flow process.

[0049] The resulting larger-scale and stronger fluid agitation can more effectively break up any possible fluid stratification or abrasive aggregation, achieving a highly uniform distribution of abrasive particles throughout the fluid volume. Combined with the cavitation effect of ultrasound and the cutting action of abrasives, it enables precise deburring and cleaning of internal structures.

[0050] The grinding balls 502 are arranged in multiple sets in a spiral pattern on the surface of the ultrasonic branch pipe 501. During the rotation of the ultrasonic branch pipe 501, the spiral grinding balls 502 are inserted into the fluid, forcing the fluid to generate a spiral flow field moving along the pipe axis. At the same time, the rotation of the grinding balls 502 continues to provide local agitation, thereby generating stronger local turbulence and shear, making the reflection, refraction and interference phenomena of sound waves more complex and dynamic. This ensures that the abrasive particles are highly uniform and continuously distributed throughout the fluid, which can ensure that the interior of the acoustic precision structural parts is fully and uniformly treated, minimizing the processing blind spots.

[0051] It is worth noting that the ultrasonic branch pipe 501 is also connected to a vertical pipe 506. The upper end of the vertical pipe 506 passes through the ultrasonic pipe 4 and is connected to a rotary joint 508. The vertical pipe 506 is connected to the air duct 7 installed on the fan through the rotary joint 508. At the same time, the vertical pipe 506 is provided with nozzles 507 arranged in a spiral shape. Each set of nozzles 507 corresponds to a set of grinding balls 502 installed on the ultrasonic branch pipe 501, and the nozzles 507 are inserted into the grinding balls 502 through the through holes 503.

[0052] During the operation of the cleaning mechanism 5, the fan will be turned on simultaneously, generating airflow that enters the grinding ball 502 through the air duct 7, vertical pipe 506, and nozzle 507. During the flow of the abrasive fluid, heat is generated due to friction, causing the temperature of the machined area on the inner wall of the acoustic precision structural component to rise. This temperature increase leads to thermal expansion of the material. For precision acoustic structural components, even minute dimensional changes can alter resonant frequency, acoustic impedance, and cavity volume, thus affecting their acoustic performance, such as frequency response, sensitivity, and distortion.

[0053] Cool air is blown into the grinding ball 502 through the air duct 7, which can achieve external cooling of the grinding ball 502 and thus avoid the impact of frictional heat on the acoustic precision structural parts. At the same time, the surface of the grinding ball 502 is provided with uniformly distributed nozzles 509, and the airflow is discharged from the grinding ball 502 through the nozzles 509, which further improves the cooling efficiency.

[0054] Furthermore, the airflow ejected from inside the grinding ball 502 will directly impact and agitate the surrounding abrasive fluid, which can supplement the agitation effect brought by the sonic vibration and make the fluid mix more thoroughly. As an additional driving force, it propels the abrasive fluid to flow faster, especially when it is necessary to force the abrasive fluid into complex geometries or distant areas, which helps to improve the fluidity of the abrasive fluid.

[0055] It should be noted that a fixed rod 510 is connected to the inner wall of the grinding ball 502, and a guide plate 511 is rotatably connected to the fixed rod 510. The guide plate 511 is Y-shaped. At the same time, two sets of baffles 513 are connected to the inner wall of the grinding ball 502. The two sets of baffles 513 are distributed on the upper and lower sides of the guide plate 511, and two sets of air ducts 514 are formed between the guide plate 511 and the baffles 513.

[0056] When the airflow enters the grinding ball 502 from the nozzle 507, it is divided into two parts by the guide plate 511. These parts then enter two sets of air ducts 514 and are discharged through the nozzles 509 in different directions. This dual-outlet design allows the abrasive fluid to form a complex flow pattern around the grinding ball 502, which helps to better disperse abrasive particles and improve processing efficiency.

[0057] The front side of the guide plate 511 is tangent to the inner wall of the grinding ball 502, while the rear side of the guide plate 511 is connected to a counterweight 512. When the grinding ball 502 is pushed to rotate during the flow of the abrasive fluid, the guide plate 511 remains horizontally distributed under the gravity of the counterweight 512. This causes the grinding ball 502 to change the distance between the baffle 513 and the guide plate 511 during rotation, thereby adjusting the size of the air duct 514. When the outer diameter of the air duct 514 decreases, the wind speed inside the air duct 514 increases. Higher wind speed means stronger airflow, which intensifies the turbulence inside the abrasive fluid, making the abrasive particles disperse more evenly and rapidly, potentially resulting in a more efficient mixing effect.

[0058] Furthermore, during the adjustment process, the sizes of the two sets of air ducts 514 are reversed, further reducing the air velocity within the other set of air ducts 514. After the airflow from the two sets of air ducts 514 is discharged through the nozzles 509, the difference in air velocity between the two airflows causes the fluid to form an asymmetric flow pattern around the grinding ball 502. The high-speed outlet generates stronger local turbulence and shear force, while the low-speed outlet generates relatively weaker flow. This asymmetry alters the overall flow path and velocity distribution of the abrasive fluid, making it easier to guide the abrasive fluid to certain hard-to-reach corners or specific areas.

[0059] Furthermore, the nozzle 509 is designed as a vortex-shaped hole. When the airflow is discharged through the nozzle 509, it will be forced to rotate, thereby driving the ball to generate a stronger and more stable rotation, and making the discharged airflow itself have rotational characteristics, which can more effectively agitate the abrasive fluid and promote the uniform distribution of abrasive particles.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrasonic-assisted cleaning device for micro-holes in acoustic precision structural components, characterized in that, include: Cleaning chamber (1); An ultrasonic generator (3) is mounted on the cleaning chamber (1) via a mounting bracket (2); The cleaning mechanism (5) is connected to the ultrasonic generator (3) and the cleaning mechanism (5) is arranged in a matrix on the ultrasonic tube (4). The cleaning mechanism (5) includes an ultrasonic branch pipe (501) rotatably connected to the ultrasonic tube (4). A grinding ball (502) is rotatably connected to the ultrasonic branch pipe (501). The outside of the grinding ball (502) protrudes from the surface of the ultrasonic branch pipe (501). The surface of the grinding ball (502) inserted into the ultrasonic branch pipe (501) has a through hole (503). The sound waves generated by the ultrasonic generator (3) enter the grinding ball (502) and are focused to the central area to generate enhanced impact force and micro-jet action on the abrasive fluid. The surface of the grinding ball (502) is provided with a convex plate A (504). The convex plate A (504) pushes the grinding ball (502) to rotate under the action of the abrasive fluid flow, and changes the incident angle of the sound waves entering the grinding ball (502) and the reflection angle and reflection path of the sound waves in the grinding ball (502).

2. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 1, characterized in that, The convex plate A (504) is designed in a cross shape.

3. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 2, characterized in that, The surface of the ultrasonic branch pipe (501) is connected to circumferentially distributed convex plates B (505).

4. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 3, characterized in that, The grinding balls (502) are arranged in multiple groups in a spiral pattern on the surface of the ultrasonic branch pipe (501).

5. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 4, characterized in that, The ultrasonic branch pipe (501) is also connected to a vertical pipe (506). The upper end of the vertical pipe (506) passes through the ultrasonic tube (4) and is connected to a rotary joint (508). The rotary joint (508) is connected to the air duct (7) installed on the fan. A nozzle (507) is provided on the vertical pipe (506). The nozzle (507) is inserted into the grinding ball (502) through the through hole (503). The surface of the grinding ball (502) is provided with uniformly distributed nozzle holes (509).

6. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 5, characterized in that, A fixed rod (510) is connected to the inner wall of the grinding ball (502). A guide plate (511) is rotatably connected to the fixed rod (510). The guide plate (511) is Y-shaped. Two sets of baffles (513) are connected to the inner wall of the grinding ball (502). The two sets of baffles (513) are distributed on the upper and lower sides of the guide plate (511). Two sets of air ducts (514) are formed between the guide plate (511) and the baffles (513).

7. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 6, characterized in that, The front side of the guide plate (511) is tangent to the inner wall of the grinding ball (502), and a counterweight (512) is connected to the rear side of the guide plate (511).

8. The ultrasonic-assisted micro-hole cleaning device for acoustic precision structural components according to claim 7, characterized in that, The nozzle (509) is configured as a vortex-shaped hole.

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