Radial ultrasonic vibration grinding wheel suitable for high-speed grinding and using method

Abstract

The invention discloses a radial ultrasonic vibration grinding wheel suitable for high-speed grinding and a using method. The grinding wheel comprises a grinding wheel resonance outer ring, a non-contact electric energy transmission device, an ultrasonic transducer, a grinding wheel front cover plate, a grinding wheel rear cover plate and a grinding material layer. Ultrasonic transducers in a longitudinal vibration mode are uniformly mounted on the inner circumferential surface of the resonant outer ring, and power is supplied to the transducers in a non-contact manner, so that the resonant outer ring generates radial ultrasonic vibration in an expansion vibration mode. The abrasive material layer is made of cubic boron nitride or diamond abrasive particles and is fixed to the outer circumferential face through brazing or electroplating, and efficient cutting of a workpiece is achieved. And the grinding force can be effectively reduced and the machining efficiency and the surface quality can be improved by cooperating with rotation and feeding movement of a machine tool spindle. Test results show that the method is suitable for precise grinding of hard and brittle materials and difficult-to-machine materials under the conditions of high speed and large cutting depth.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic vibration-assisted grinding technology, specifically to a radial ultrasonic vibration grinding wheel for high-speed grinding and its method of use.

[0002] In the grinding process, the structure of the grinding wheel can significantly affect the machining accuracy and quality of the workpiece. The grinding wheel generates a large amount of grinding heat during grinding, causing grinding burns on the workpiece surface. Currently, grinding wheels equipped with ultrasonic grinding devices cannot effectively remove grinding debris during high-speed grinding, resulting in low workpiece machining efficiency. For example, Chinese patent document CN206344030U discloses a radial ultrasonic vibration-assisted cup-shaped grinding wheel. This grinding wheel has a vibration module indirectly fixed to a ring base, which can be sequentially connected to the structural components of an ultrasonic vibration device. The ultrasonic transducer drives the grinding wheel to generate radial grinding. Using this grinding wheel plays an important role in improving the surface quality of hard and brittle materials and reducing part damage. Chinese patent document CN112123033B discloses an ultrasonic vibration-assisted grinding wheel suitable for internal grooves. This grinding wheel can greatly improve the grinding quality and accuracy of the groove walls within rotating bodies. Its features include adjusting the ultrasonic transducer and amplitude transformer, which are connected to the grinding wheel via threads. This grinding wheel is mainly used for grinding small-sized rotating parts. Chinese patent document CN110315445B discloses a composite vibrating grinding wheel for high-efficiency ultrasonic machining. This grinding wheel has two ends: the upper end is an ultrasonic grinding ring with a central conical hole, and the lower end has multiple inclined grooves that allow the grinding fluid to connect to the central conical hole. This enables the grinding fluid to actively cool in conjunction with the ultrasonic vibration system, improving grinding efficiency. Chinese patent document CN220699286U discloses a grinding wheel structure and an ultrasonic grinding tool. This grinding wheel features a grinding device located on the edge of the wheel, a mounting hole on the wheel disc, and a grinding fluid flow channel. A rotating shaft is connected to the mounting hole, and grinding chips are discharged through a chip removal groove on the grinding device. Using this grinding wheel can reduce ultrasonic cavitation during ultrasonic machining, and utilize the impact force of ultrasonic vibration to improve the flow of residue, thereby improving machining quality. However, all the aforementioned ultrasonic vibrating grinding wheels are solid in structure. Due to the requirement that ultrasonic processing devices must be in a resonant state during operation, the diameter of these wheels is less than 50 mm. When the diameter exceeds 50 mm, the solid grinding wheel becomes too heavy, resulting in a very small ultrasonic amplitude. Therefore, large-diameter solid grinding wheels waste ultrasonic vibration energy and cannot meet the requirement of an ultrasonic amplitude greater than 2 μm in ultrasonic vibration-assisted grinding. Grinding wheels with a diameter of less than 50 mm are generally only suitable for low-speed milling processes and cannot be used in high-efficiency deep-cut grinding or other grinding processes with high material removal rates, thus limiting the improvement of processing efficiency and the application areas of ultrasonic vibration-assisted grinding. It is necessary to develop hollow radial ultrasonic vibrating grinding wheels to improve the efficiency of ultrasonic vibration-assisted grinding. Summary of the Invention

[0003] The purpose of this invention is to address the problems of existing ultrasonic vibration-assisted grinding wheels having small diameters, being only suitable for low-speed shallow-cut grinding, and lacking efficiency and machining quality under high-speed and deep-cut conditions. This invention provides a large-diameter radial ultrasonic vibration grinding wheel suitable for high-speed grinding and its application method. By uniformly arranging multiple longitudinal vibration mode ultrasonic transducers within the large-diameter grinding wheel structure and using a non-contact power transmission method, stable expansion and contraction mode radial ultrasonic vibration is generated in the outer ring of the grinding wheel's resonant system. This maintains good vibration performance under high-speed and deep-cut grinding conditions, achieving high-efficiency and high-quality ultrasonic-assisted grinding. The technical solution of the present invention is implemented as follows: a radial ultrasonic vibration grinding wheel for high-speed grinding, comprising a grinding wheel resonant outer ring 1, an ultrasonic transducer 3, an abrasive layer 7, and a non-contact power transmission device 2. The outer ring 1 of the grinding wheel resonant has a circular structure and operates in an expansion and contraction vibration mode. Its outer circumferential surface 105 is provided with an abrasive layer 7. The outer ring 1 of the grinding wheel resonance has uniformly alternating radial vibration direction wave nodes and antinodes on its circumferential surface. The number of wave nodes and antinodes are equal, and the vibration phases of adjacent antinodes are opposite along the radial direction. The inner circumferential surface 103 of the grinding wheel resonant outer ring 1 is uniformly provided with several planes 104, and the ultrasonic transducer 3 is in longitudinal vibration mode and is uniformly distributed on the planes 104.

[0004] Preferably, the outer ring 1 of the grinding wheel resonator is provided with a plurality of axially penetrating circular through holes 102 evenly distributed along the circumferential direction. The circular through holes 102 are located at the midpoint of two adjacent wave nodes of the expansion and contraction vibration mode, and a plane 104 is provided between two adjacent circular through holes 102. The non-contact power transmission device 2 is located at the center of the grinding wheel and is electrically connected to the ultrasonic transducer 3 via a wire 4, for supplying power to the ultrasonic transducer 3.

[0005] Preferably, the circular through-hole 102 is located between the inner ring and the outer ring of the resonant outer ring 1, and the number of the circular through-holes 102 is equal to the number of wave nodes of the expansion and contraction vibration mode of the resonant outer ring.

[0006] Preferably, the non-contact power transmission device 2 includes a primary side 201 and a secondary side 202. The primary side 201 is connected to the ultrasonic power supply by a wire, and the secondary side 202 is connected to the ultrasonic transducer 3 by a wire 4. The primary side 201 is fixedly installed on the front cover sleeve 501, and the secondary side 202 is rotatably installed on the cover sleeve 501.

[0007] Preferably, a threaded hole is provided at the center of the plane 104 on the inner side of the resonant outer ring 1 for mounting the ultrasonic transducer 3.

[0008] Preferably, the outer diameter of the resonant outer ring 1 is 400 mm, the inner diameter is 360 mm, and the thickness is 20 mm, and the resonant frequency of the ultrasonic transducer 3 is 20 kHz.

[0009] Preferably, the outer diameter of the grinding wheel front cover plate 5 is 400mm, the inner diameter is 125mm, and the thickness is 5mm. An extension sleeve 501 is provided along the inner diameter. The grinding wheel front cover plate 5 and the grinding wheel rear cover plate 6 are fixed on both sides of the grinding wheel resonant outer ring 1.

[0010] Preferably, cylindrical pins are used to sequentially pass through the second circular hole 601 on the surface of the front cover plate 5 of the grinding wheel, the circular through hole 102 of the outer ring 1 of the grinding wheel resonance, and the second circular hole 601 on the surface of the rear cover plate 6 of the grinding wheel. The front cover plate 5, the rear cover plate 6 of the grinding wheel and the cylindrical pins are interference fit. The number of cylindrical pins is equal to the number of circular through holes 102, so as to complete the fixed connection of the front cover plate 5, the outer ring 1 of the grinding wheel resonance and the rear cover plate 6 of the grinding wheel.

[0011] Preferably, the abrasive layer 7 is cubic boron nitride abrasive grains or diamond abrasive grains, and is fixed by brazing or electroplating.

[0012] Preferably, the method of using the radial ultrasonic vibrating grinding wheel is characterized by comprising the following steps: 1) Turn on the ultrasonic power supply and supply power to the ultrasonic transducer 3 through the non-contact power transmission device 2 to generate longitudinal ultrasonic vibration; 2) Start the machine tool spindle rotation and workpiece feed motion; 3) Grinding the workpiece under the combined action of radial ultrasonic vibration and rotation; 4) After processing is completed, turn off the machine tool spindle, workpiece feed motion and ultrasonic power supply in sequence.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Suitable for high-speed and deep-cut grinding conditions, the grinding wheel of this invention can be designed with a large diameter, with an outer diameter of up to 400 mm, and can still maintain stable operation under high linear speed conditions; it can operate stably in the linear speed range of 50 to 120 m / s, and the maximum grinding depth can reach 0.5 mm, which can meet the requirements of high material removal rate grinding for processing efficiency and stability.

[0014] 2. Reduce grinding force and reduce processing load. Under grinding test conditions of hard and brittle materials such as silicon carbide, compared with ordinary grinding, the present invention can reduce the grinding force by about 26.6%, which helps to reduce the risk of surface damage to the workpiece and reduce the load on the machine tool system.

[0015] 3. Improved surface quality: In grinding Ti6Al4V titanium alloy, this invention can significantly reduce the surface roughness of the workpiece by about 50%, which is better than ordinary grinding under the same or similar process parameters, and can break through the application limitations of existing small-diameter ultrasonic grinding wheels in high-speed and high-efficiency grinding.

[0016] 4. It is beneficial for chip removal and heat dissipation, reducing the risk of grinding burns. The present invention adopts radial ultrasonic vibration mode of expansion and contraction, which can promote timely chip removal in the grinding zone and improve chip removal efficiency, reduce grinding wheel blockage and frictional heat generation, help reduce grinding heat accumulation and the probability of grinding burns, and improve the stability of the processing.

[0017] In summary, this invention can balance processing efficiency and processing quality under high-speed, deep-cut grinding conditions, and has comprehensive advantages such as reducing grinding force, improving surface quality and suppressing grinding burn. It is suitable for efficient and precision grinding of hard and brittle materials and difficult-to-machine materials. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of a radial ultrasonic vibrating grinding wheel used in high-speed grinding. Figure 2 These are the front view and sectional view of a radial ultrasonic vibrating grinding wheel used in high-speed grinding. Figure 3 This is a schematic diagram of the grinding process using a radial ultrasonic vibrating grinding wheel in high-speed grinding. Figure 4 This is the front view of the outer ring of the grinding wheel resonator; Figure 5 This is a 3D diagram of the outer ring of the grinding wheel resonance. Figure 6 This is a schematic diagram of the structure of an ultrasonic transducer; Figure 7 This is a 3D view of the front cover plate of the grinding wheel; Figure 8 These are the front and left views of the grinding wheel back cover plate; Figure 9 These are the primary and secondary sides of a contactless power transmission device; Figure 10 This refers to the expansion and contraction vibration mode of the outer ring of the grinding wheel resonator in this invention; Figure 11 Longitudinal vibration modes of the ultrasonic transducer in the invention.

[0019] In the figure: 1. Outer ring of grinding wheel resonance, 101. Circular reference line, 102. Circular through hole, 103. Inner circumferential surface, 104. Plane, 105. Outer circumferential surface, 2. Non-contact power transmission device, 201. Primary side, 202. Secondary side, 3. Ultrasonic transducer, 3. Front cover plate, 301. Piezoelectric ceramic, 302. Wire, 4. Front cover plate of grinding wheel, 5. Sleeve, 501. Circular hole one, 502. Rear cover plate of grinding wheel, 6. Circular hole two, 601. Abrasive layer, 7. Workpiece, 8. Detailed Implementation

[0020] The present invention provides a detailed description of a radial ultrasonic vibrating grinding wheel for high-speed grinding and its method of use, in conjunction with embodiments and accompanying drawings.

[0021] This invention relates to a high-speed ultrasonic vibration-assisted grinding process, proposing a radial ultrasonic vibration grinding wheel for high-speed grinding and its usage method. By using radial ultrasonic vibration of the abrasive layer on the surface of a large-diameter grinding wheel, combined with the spindle of the grinding machine driving the grinding wheel to rotate and the workpiece to feed, radial ultrasonic vibration-assisted grinding is achieved, thereby improving processing efficiency and processing quality.

[0022] Combination Figure 1-11 The present invention provides a radial ultrasonic vibration grinding wheel for high-speed grinding, comprising a grinding wheel resonant outer ring 1, a non-contact power transmission device 2, an ultrasonic transducer 3, a wire 4, a grinding wheel front cover plate 5, a grinding wheel rear cover plate 6, and an abrasive layer 7.

[0023] The aforementioned grinding wheel resonant outer ring 1 is circular in shape, with an outer diameter of 400 mm, an inner diameter of 360 mm, and a thickness of 20 mm. The diameter of the annular reference line 101 is 380 mm and is coaxially arranged with the resonant outer ring 1. The resonant outer ring 1 has 28 axial circular through holes 102 evenly distributed along the annular reference line 101 and located on the inner circumferential surface 103 of the grinding wheel resonant outer ring 1. A plane 104 is provided between every two circular through holes 102, and there are a total of 28 planes 104. The length of each plane is 20 mm, which is equal to the diameter of the ultrasonic transducer 3. A threaded hole with an M6 depth of 12 mm is opened at the center of each plane 104 for installing the ultrasonic transducer 3.

[0024] The abrasive layer 7 is made of cubic boron nitride or diamond abrasive grains, which are fixed to the outer circumferential surface 105 of the grinding wheel resonant outer ring 1 by brazing or electroplating, and are used to remove workpiece material during the grinding process.

[0025] The ultrasonic transducer 3 includes a front cover plate 301, a piezoelectric ceramic 302, and a rear cover plate. The diameters of the front cover plate 301, piezoelectric ceramic 302, and rear cover plate are equal to the side length of the plane 104, all being 20 mm. The resonant frequency of the ultrasonic transducer 3 is 20 kHz, and the resonant mode is longitudinal vibration, i.e., vibration along the axial direction of the ultrasonic transducer 3. The front cover plate 301 has an M6 threaded hole on its front side, and an M6 double-ended stud is used to install it on the M6 ​​threaded hole of the plane 104 of the grinding wheel resonant outer ring 1. One ultrasonic transducer is installed every four planes 104, for a total of seven ultrasonic transducers installed on the grinding wheel resonant outer ring 1.

[0026] A front cover plate 5 and a rear cover plate 6 are respectively provided on both sides of the outer ring 1 of the grinding wheel resonance. The outer ring 1, the front cover plate 5, and the rear cover plate 6 are coaxially arranged. The outer diameter of the front cover plate 5 is 400 mm, the inner diameter is 125 mm, and the thickness is 5 mm. A sleeve 501 with a height of h protrudes along the inner diameter of the ring. The value of h is equal to the sum of the thickness of the outer ring 1 and the thickness of the rear cover plate 6, which is 25 mm in this embodiment. The outer diameter of the sleeve 501 is 130 mm. The surface of the front cover plate has 28 circular holes 502 with a diameter of 6 mm, which are evenly distributed in a circle on a circle with a diameter of 380 mm.

[0027] The outer diameter of the grinding wheel rear cover plate 6 is 400 mm, the inner diameter is 170 mm, and the thickness is equal to that of the grinding wheel front cover plate 5, which is 5 mm in this embodiment; 28 circular holes 601 with a diameter of 6 mm are opened on the edge, which are evenly distributed in a circle with a distribution diameter of 380 mm.

[0028] In this embodiment, 28 cylindrical pins with a diameter of 6 mm and a length of 30 mm are used to pass through the second circular hole 601 on the surface of the front cover plate 5 of the grinding wheel, the circular through hole 102 of the outer ring 1 of the grinding wheel resonance, and the second circular hole 601 on the surface of the rear cover plate 6 of the grinding wheel in sequence to complete the assembly of the front cover plate 5, the outer ring 1 of the grinding wheel resonance, and the rear cover plate 6 of the grinding wheel. The cylindrical pins are interference-fitted with the front cover plate 5 and the rear cover plate 6 to ensure the stability of the connection.

[0029] The non-contact power transmission device 2 is annular in shape, comprising a primary side 201 and a secondary side 202, having the same outer diameter, inner diameter, and thickness. The distance between the primary side 201 and the secondary side 202 is 0.5 mm. The primary side 201 and the secondary side 202 are rotatably arranged relative to each other. The primary side 201 and the secondary side 202 are respectively fixedly and rotatably mounted on the sleeve 501 of the front cover plate 5 of the grinding wheel. The inner diameter of the non-contact power transmission device 2 is clearance-fitted with the outer diameter of the sleeve 501 of the front cover plate of the grinding wheel. The outer diameter of the non-contact power transmission device 2 is equal to the inner diameter of the rear cover plate 6 of the grinding wheel. In this embodiment, the inner diameter of the rear cover plate 6 of the grinding wheel is 170 mm and the outer diameter is 400 mm. The thickness of the non-contact power transmission device 2 is equal to the length of the sleeve 501 of the front cover plate 5 of the grinding wheel.

[0030] The primary side 201 of the non-contact power transmission device 2 is connected to the ultrasonic power supply via a wire, and the secondary side 202 is connected to the ultrasonic transducer 3 via a wire 4. The non-contact power transmission device 2 is rotatably mounted on the front cover sleeve 501. In operation, the ultrasonic power supply inputs a high-frequency AC signal to the primary side 201 of the non-contact power transmission device 2. Simultaneously, the ultrasonic vibrating grinding wheel drives the secondary side 202 of the non-contact power transmission device 2 to rotate around its axis. The stationary primary side 201 transmits the electrical signal to the rotating secondary side 202 based on the electromagnetic induction effect. Then, the electrical energy is transmitted to the ultrasonic transducer 3 through the wire 4. Based on the piezoelectric effect, ultrasonic vibration is generated. Multiple ultrasonic transducers 3 simultaneously achieve longitudinal vibration mode, driving the outer ring 1 of the grinding wheel to achieve expansion and contraction vibration mode. The abrasive grains are fixed on the outer surface of the outer ring 1 of the grinding wheel to remove grinding material.

[0031] When the grinding wheel is grinding, the ultrasonic transducer 3 is set to ultrasonic vibration in the longitudinal vibration mode, and the outer ring 1 of the grinding wheel resonant generates ultrasonic vibration in the expansion and contraction mode. At the same time, it cooperates with the machine tool feed motion and the grinding wheel rotation motion to realize radial ultrasonic vibration assisted grinding.

[0032] The expansion and contraction mode is characterized by having 28 amplitude points 106 and 28 wave nodes 107. Each circular through-hole 102 is located at a vibration wave node. The vibration phases are opposite on both sides of the wave node. For example, when the outer ring 1 of the grinding wheel resonator bulges outward on the left side, it bulges inward on the right side, and then the left and right sides alternate. The amplitude points are located at the center of the two wave nodes.

[0033] A radial ultrasonic vibrating grinding wheel for high-speed grinding and its usage method are as follows: First, turn on the ultrasonic power supply. The non-contact power transmission device 2 transmits high-frequency electrical signals to seven ultrasonic transducers 3 through wires. Based on the inverse piezoelectric effect, the ultrasonic transducers 3 generate longitudinal ultrasonic vibration, driving the outer ring 1 of the grinding wheel to generate expansion and contraction mode ultrasonic vibration. The abrasive layer 7 is distributed on the surface of the outer ring 1 of the grinding wheel, and the workpiece 8 is located below the ultrasonic vibrating grinding wheel. Then, turn on the machine tool spindle rotation and workpiece horizontal feed motion to start radial ultrasonic vibration assisted grinding. After processing is completed, first turn off the movement of the machine tool spindle and the worktable, and then turn off the ultrasonic power supply to complete the ultrasonic vibration assisted grinding.

[0034] Comparison of results from examples: To verify the performance of the large-diameter radial ultrasonic vibration grinding wheel of the present invention, the experimental results of the present invention were compared with existing research data.

[0035] Referring to the grinding experiment results of silicon carbide materials by Yin Zhen et al. of Suzhou University of Science and Technology in the "Journal of Mechanical Engineering" (Issue 9, 2024), under the conditions of grinding a thickness of 6μm and a grinding speed of 3.68m / s, ultrasonic vibration assisted grinding reduced the grinding force by about 26.6% compared with ordinary grinding. Under the same grinding conditions, the large-diameter radial ultrasonic vibrating grinding wheel used in this invention can stably increase the grinding speed to 120m / s and the maximum grinding depth to 0.5mm.

[0036] Referring to the experimental results of Wang Yan et al. from Tianjin University of Science and Technology in "Manufacturing Technology and Machine Tools" (Issue 8, 2023) on Ti6Al4V titanium alloy, when the ultrasonic amplitude increased from 0 μm to 15 μm, the surface roughness decreased from 4.025 μm to 2.86 μm, a reduction of approximately 40%. Under the same conditions, when machining Ti6Al4V titanium alloy with the large-diameter radial ultrasonic vibration grinding wheel of this invention, the surface roughness can be reduced by approximately 50%. The results show that under high-speed, deep-cut grinding conditions, this invention can significantly reduce grinding force, improve machining efficiency, and improve workpiece surface quality.

Claims

1. A radial ultrasonic vibrating grinding wheel for high-speed grinding, characterized in that: It includes a grinding wheel resonant outer ring (1), an ultrasonic transducer (3), an abrasive layer (7), and a non-contact power transmission device (2); The grinding wheel resonant outer ring (1) has a circular ring structure and operates in an expansion and contraction vibration mode. Its outer circumferential surface (105) is provided with an abrasive layer (7). The outer ring (1) of the grinding wheel resonance has uniformly alternating wave nodes and antinodes in the radial vibration direction on its circumferential surface. The number of wave nodes and the number of antinodes are equal, and the vibration phases of adjacent antinodes are opposite in the radial vibration direction. The inner circumferential surface (103) of the grinding wheel resonant outer ring (1) is uniformly provided with several planes (104), and the ultrasonic transducer (3) is in longitudinal vibration mode and is uniformly distributed on the planes (104).

2. The radial ultrasonic vibrating grinding wheel for high-speed grinding according to claim 1, characterized in that: The outer ring (1) of the grinding wheel resonance is provided with a number of axial through circular holes (102) evenly distributed along the circumferential direction. The circular holes are located at the midpoint of two adjacent wave nodes of the expansion and contraction vibration mode. A plane (104) is provided between two adjacent circular holes (102). The non-contact power transmission device (2) is located at the center of the grinding wheel and is electrically connected to the ultrasonic transducer (3) via a wire (4) to supply power to the ultrasonic transducer (3).

3. The radial ultrasonic vibrating grinding wheel for high-speed grinding according to claim 1, characterized in that: The circular through hole (102) is located between the inner ring and the outer ring of the resonant outer ring (1), and the number of circular through holes (102) is equal to the number of wave nodes of the expansion and contraction vibration mode of the resonant outer ring.

4. The radial ultrasonic vibrating grinding wheel for high-speed grinding according to claim 3, characterized in that: The non-contact power transmission device (2) includes a primary side (201) and a secondary side (202). The primary side (201) is connected to the ultrasonic power supply by a wire, and the secondary side (202) is connected to the ultrasonic transducer (3) by a wire (4). The primary side (201) is fixedly installed on the front cover sleeve (501), and the secondary side (202) is rotatably installed on the cover sleeve (501).

5. The grinding wheel according to claim 4, characterized in that: A threaded hole is provided at the center of the plane (104) on the inner side of the resonant outer ring (1) for installing the ultrasonic transducer 3.

6. The grinding wheel according to any one of claims 1-5, characterized in that: The outer diameter of the resonant outer ring (1) is 400 mm, the inner diameter is 360 mm, and the thickness is 20 mm. The resonant frequency of the ultrasonic transducer (3) is 20 kHz.

7. The grinding wheel according to any one of claims 1-5, characterized in that: The grinding wheel front cover plate (5) has an outer diameter of 400 mm, an inner diameter of 125 mm, and a thickness of 5 mm. An extension sleeve (501) is provided along the inner diameter. The grinding wheel front cover plate (5) and the grinding wheel rear cover plate (6) are fixed on both sides of the grinding wheel resonant outer ring (1).

8. The grinding wheel according to any one of claims 1-5, characterized in that: Cylindrical pins are used to pass through the second circular hole (601) on the surface of the front cover plate (5) of the grinding wheel, the circular through hole (102) on the outer ring (1) of the grinding wheel resonance, and the second circular hole (601) on the surface of the rear cover plate (6) of the grinding wheel in sequence. The front cover plate (5), the rear cover plate (6) of the grinding wheel and the cylindrical pins are interference fit. The number of cylindrical pins is equal to the number of circular through holes (102), thus completing the fixed connection of the front cover plate (5), the outer ring (1) of the grinding wheel resonance and the rear cover plate (6).

9. The grinding wheel according to any one of claims 1-5, characterized in that: The abrasive layer (7) is cubic boron nitride abrasive grains or diamond abrasive grains, which are fixed by brazing or electroplating.

10. A method of using the radial ultrasonic vibration grinding wheel according to claim 5, characterized in that: Includes the following steps: 1) Turn on the ultrasonic power supply and supply power to the ultrasonic transducer (3) through the non-contact power transmission device (2) to generate longitudinal ultrasonic vibration; 2) Start the machine tool spindle rotation and workpiece feed motion; 3) Grinding the workpiece under the combined action of radial ultrasonic vibration and rotation; 4) After processing is completed, turn off the machine tool spindle, workpiece feed motion and ultrasonic power supply in sequence.

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