Ultrasonic rolling tools and ultrasonic rolling devices

Abstract

This application relates to an ultrasonic rolling tool and an ultrasonic rolling device. The ultrasonic rolling tool includes an amplitude transformer, a rolling tool head, and a locking cap. The amplitude transformer has a first end, which has a first receiving cavity and a first opening. The rolling tool head includes a rolling body and an assembly assembly. The rolling body is detachably mounted on one end of the assembly assembly, and the other end of the assembly assembly, away from the rolling body, is disposed in the first receiving cavity through the first opening. The locking cap is sleeved on the first end and detachably connected to the amplitude transformer, used to lock the rolling tool head to the first end. After prolonged use, the ultrasonic rolling tool needs to be inspected for damage to the rolling body. If the rolling body is damaged, the locking cap is removed from the first end of the amplitude transformer, the rolling tool head is removed from the first receiving cavity, and then the rolling body is removed from the assembly assembly and replaced with a new rolling body. This facilitates the inspection and replacement of the rolling body.

Description

Technical Field

[0001] This application relates to the field of ultrasonic rolling processing equipment technology, and in particular to an ultrasonic rolling tool and ultrasonic rolling device. Background Technology

[0002] With the development of high-end manufacturing, higher requirements are being placed on the fatigue resistance, wear resistance, and corrosion resistance of key components. Ultrasonic rolling, as a strengthening technology to improve the surface fatigue of components, uses ultrasonic impact combined with extrusion pressure to generate local elastic-plastic deformation on the material surface, thereby changing the surface stress state and microstructure, improving the surface finish, microhardness, and deep residual compressive stress, and effectively enhancing the fatigue resistance of components.

[0003] During ultrasonic roll forming, the ultrasonic roll forming tool is mounted on the spindle of a machine tool. The tool feeds synchronously with the spindle, allowing the rolling element to roll freely on the surface of the workpiece for ultrasonic roll forming. After prolonged use, the rolling element of the ultrasonic roll forming tool needs to be repaired and replaced due to wear. However, common ultrasonic roll forming tools do not allow for the replacement of the rolling element. Summary of the Invention

[0004] Therefore, it is necessary to provide an ultrasonic rolling tool and ultrasonic rolling device to facilitate the inspection and replacement of the rolling body.

[0005] An ultrasonic rolling tool, comprising:

[0006] An amplitude transformer has a first end, the first end having a first receiving cavity and a first opening communicating with the first receiving cavity;

[0007] A rolling tool head, comprising a rolling body and an assembly assembly, wherein the rolling body is detachably mounted to one end of the assembly assembly, and the other end of the assembly assembly, facing away from the rolling body, is disposed within the first receiving cavity through the first opening; and...

[0008] A locking cap is sleeved on the first end and detachably connected to the amplitude rod. The locking cap is used to lock the rolling tool head to the first end. The locking cap has a first through hole, and the rolling body is movably located in the first through hole.

[0009] In one embodiment, the assembly assembly includes a first assembly body and a second assembly body that are detachably connected. The first assembly body and the second assembly body are mated together to form a second receiving cavity with a second opening. The rolling body is movably disposed in the second receiving cavity, and the rolling body is at least partially located outside the second receiving cavity through the second opening.

[0010] In one embodiment, the first assembly body has a first arc-shaped groove on the side facing the second assembly body, the first arc-shaped groove extending circumferentially along the first assembly body, and the second assembly body has a second arc-shaped groove on the side facing the first assembly body, the second arc-shaped groove extending circumferentially along the second assembly body, the first arc-shaped groove and the second arc-shaped groove surrounding each other to form the second receiving cavity.

[0011] In one embodiment, the first assembly body is provided with a mortise on the side facing the second assembly body, and the second assembly body is provided with a tenon on the side facing the first assembly body; or, the first assembly body is provided with a tenon on the side facing the second assembly body, and the second assembly body is provided with a mortise on the side facing the first assembly body, with the tenon disposed in the mortise.

[0012] In one embodiment, the first assembly body includes a first semi-cylinder and a column with the same diameter as the first semi-cylinder. The first semi-cylinder and the column are spaced apart along their axial direction. The outer peripheral surface of the first semi-cylinder is connected to the outer peripheral surface of the column and forms the tenon groove. The opening of the tenon groove faces the second assembly body. The first semi-cylinder has a first arc-shaped groove on the side facing the second assembly body. The second assembly body includes a second semi-cylinder that mates with the first semi-cylinder. The second semi-cylinder has a tenon corresponding to the tenon groove and a second arc-shaped groove corresponding to the first arc-shaped groove on the side facing the first assembly body.

[0013] In one embodiment, the first accommodating cavity is a conical cavity, the diameter of which gradually decreases from the first end toward the direction away from the first end; the assembly assembly further includes a collet, which is a conical collet adapted to the conical cavity; the collet has a third accommodating cavity and a second through hole communicating with the third accommodating cavity, the first assembly body and the second assembly body are disposed in the third accommodating cavity, the outer walls of the first assembly body and the second assembly body are in contact with the cavity wall of the third accommodating cavity, one end of the collet away from the second through hole is disposed in the first accommodating cavity and connected to the cavity wall of the first accommodating cavity, one end of the collet with the second through hole is located outside the amplitude transformer and connected to the locking cap, the rolling body is movably disposed in the second through hole, and at least part of the rolling body is located outside the collet through the second through hole.

[0014] In one embodiment, the side wall of the amplitude transformer is provided with a liquid inlet hole; the amplitude transformer is provided with a first cooling channel communicating with the liquid inlet hole, the assembly is provided with a second cooling channel communicating with the first cooling channel, and the rolling body is disposed in the second cooling channel.

[0015] In one embodiment, the amplitude transformer further has a second end located at an end of the amplitude transformer axially away from the first end, the second end being provided with a connecting flange including a flange plate and a neck extending from the flange plate in a direction away from the amplitude transformer; the ultrasonic rolling tool further includes a shank sleeve fitted onto the neck and having an interference fit with the neck.

[0016] In one embodiment, the ultrasonic rolling tool further includes a piezoelectric ceramic component, an end cap, and fasteners disposed within the tool holder. The piezoelectric ceramic component is disposed on the side of the connecting flange away from the amplitude transformer, and the end cap is disposed on the side of the piezoelectric ceramic component away from the connecting flange. The piezoelectric ceramic component and the end cap are installed on the connecting flange by means of the fasteners.

[0017] An ultrasonic rolling device includes the ultrasonic rolling tool described above.

[0018] After prolonged use, the ultrasonic rolling tool and ultrasonic rolling device described above require inspection to check for damage to the rolling body. If the rolling body is damaged, remove the locking cap from the first end of the amplitude transformer, remove the rolling tool head from the first receiving cavity, and then remove the rolling body from the assembly assembly. Replace it with a new rolling body. During replacement, install the rolling body onto the assembly assembly to form the rolling tool head. Insert the end of the rolling tool head away from the rolling body into the first receiving cavity through the first opening. Finally, place the locking cap on the first end of the amplitude transformer, locking the rolling tool head to the amplitude transformer. This facilitates the inspection and replacement of the rolling body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an ultrasonic rolling device according to an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of an ultrasonic rolling tool according to an embodiment of this application.

[0021] Figure 3 for Figure 2 The image shows a front view of the ultrasonic rolling tool.

[0022] Figure 4 for Figure 2 Sectional view along the middle AA.

[0023] Figure 5 for Figure 2 The diagram shows a partial structural schematic of the ultrasonic rolling tool.

[0024] Figure 6 for Figure 5A cross-sectional view along the middle BB.

[0025] Figure 7 for Figure 2 The diagram shows the structure of the rolling tool head.

[0026] Explanation of icon numbers:

[0027] 10. Amplitude rod; 11. First receiving cavity; 13. Liquid inlet; 14. First cooling channel; 15. Connecting flange; 151. Flange; 152. Neck; 20. Roller head; 21. Roller body; 22. Assembly assembly; 221. First assembly body; 2211. First half-cylinder; 2212. Column; 2213. First arc groove; 2214. Tenon; 222. Second assembly body; 2221. Second half-cylinder; 2222. Tenon; 2223. Second arc groove; 225. Collet; 2251. Third receiving cavity; 2252. Second through hole; 226. Second cooling channel; 30. Locking cap; 40. Tool holder; 50. Piezoelectric ceramic assembly; 60. End cap; 70. Fastener; 80. Ultrasonic generator; 90. Spindle; 100. Workpiece. Detailed Implementation

[0028] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0029] See Figure 1 This application provides an ultrasonic rolling apparatus according to one embodiment. The ultrasonic rolling apparatus includes an ultrasonic rolling tool for connection to the spindle 90 of a machine tool. Specifically, the shank 40 of the ultrasonic rolling tool is connected to the spindle 90 of the machine tool, so that the ultrasonic rolling tool can move synchronously with the spindle 90 to perform ultrasonic rolling processing on the workpiece 100.

[0030] In one embodiment, see Figure 2 , Figure 3 and Figure 4The ultrasonic rolling tool includes an amplitude transformer 10, a rolling tool head 20, and a locking cap 30. The amplitude transformer 10 has a first end, which is one end of the amplitude transformer 10 along its axial direction. The first end has a first receiving cavity 11 and a first opening communicating with the first receiving cavity 11. The rolling tool head 20 includes a rolling body 21 and an assembly assembly 22. The rolling body 21 is detachably mounted on one end of the assembly assembly 22, and the other end of the assembly assembly 22, facing away from the rolling body 21, is disposed within the first receiving cavity 11 through the first opening. The locking cap 30 is sleeved on the first end and detachably connected to the amplitude transformer 10, for locking the rolling tool head 20 to the first end. The locking cap 30 has a first through hole, and the rolling body 21 is movably located within the first through hole.

[0031] See Figure 1 and Figure 4 During operation, the machine tool spindle 90 feeds, driving the ultrasonic rolling tool to move. During this process, the rolling body 21 contacts the workpiece 100 and can roll freely on the surface of the workpiece 100 to perform ultrasonic rolling processing. After prolonged use, the ultrasonic rolling tool needs to be inspected for damage to the rolling body 21. If the rolling body 21 is damaged, remove the locking cap 30 from the first end of the amplitude transformer 10, remove the rolling tool head 20 from the first receiving cavity 11, and then remove the rolling body 21 from the assembly assembly 22 and replace it with a new rolling body 21. During replacement, install the rolling body 21 onto the assembly assembly 22 to form the rolling tool head 20. Insert the end of the rolling tool head 20 away from the rolling body 21 into the first receiving cavity 11 through the first opening. Finally, place the locking cap 30 onto the first end of the amplitude transformer 10, locking the rolling tool head 20 to the amplitude transformer 10. This makes it easier to inspect and replace the rolling body 21.

[0032] Optionally, see Figure 4 The rolling body 21 is spherical. During the ultrasonic rolling process, the spherical rolling body 21 can roll freely and flexibly on the surface of the workpiece 100, which is beneficial to improving the quality of ultrasonic rolling. Of course, in other embodiments, the shape of the rolling body 21 can be changed according to actual needs, for example, the shape of the rolling body 21 can be elliptical, and it is not limited thereto.

[0033] In one embodiment, see Figure 5 , Figure 6 and Figure 7The assembly component 22 includes a first assembly body 221 and a second assembly body 222 that are detachably connected. The first assembly body 221 and the second assembly body 222 are mated together to form a second receiving cavity with a second opening. The rolling body 21 is movably disposed within the second receiving cavity, and the rolling body 21 is at least partially located outside the second receiving cavity through the second opening. It is understood that the first assembly body 221 and the second assembly body 222 cooperate to clamp the rolling body 21, achieving stable and reliable installation of the rolling body 21, preventing the rolling body 21 from detaching during ultrasonic rolling, and ensuring the normal operation of ultrasonic rolling processing. When the rolling body 21 needs to be replaced, the first assembly body 221 and the second assembly body 222 are disassembled, allowing the rolling body 21 to be removed for replacement.

[0034] In one embodiment, see Figure 6 and Figure 7 The first assembly body 221 has a first arc-shaped groove 2213 on the side facing the second assembly body 222, and the first arc-shaped groove 2213 extends circumferentially along the first assembly body 221. The second assembly body 222 has a second arc-shaped groove 2223 on the side facing the first assembly body 221, and the second arc-shaped groove 2223 extends circumferentially along the second assembly body 222. The first arc-shaped groove 2213 and the second arc-shaped groove 2223 together form the second receiving cavity. Thus, after the first assembly body 221 and the second assembly body 222 are connected, the first arc-shaped groove 2213 and the second arc-shaped groove 2223 together form a spherical second receiving cavity. After the rolling body 21 is placed in the second receiving cavity, the rolling body 21 can roll freely within the second receiving cavity.

[0035] Further, see Figure 6 and Figure 7 The first assembly body 221 has a mortise 2214 on the side facing the second assembly body 222, and the second assembly body 222 has a tenon 2222 on the side facing the first assembly body 221. The tenon 2222 is located within the mortise 2214. During installation, the tenon 2222 is inserted into the mortise 2214, which ensures a secure and reliable connection between the first assembly body 221 and the second assembly body 222, preventing the rolling body 21 from coming out of the second receiving cavity during ultrasonic rolling. External force is applied to the first assembly body 221 and the second assembly body 222, causing the tenon 2222 to disengage from the mortise 2214. This allows the first assembly body 221 and the second assembly body 222 to be separated, facilitating the removal of the rolling body 21 and improving the replacement efficiency of the rolling body 21.

[0036] In this embodiment, see Figure 6After the first assembly body 221 and the second assembly body 222 are mated together, a cylinder 2212 is formed. Of course, in other embodiments, the first assembly body 221 and the second assembly body 222 may also form other shapes after mating together, and are not limited thereto.

[0037] Specifically, see Figure 7 The first assembly body 221 includes a first semi-cylinder 2211 and a column 2212 of the same diameter as the first semi-cylinder 2211. The first semi-cylinder 2211 and the column 2212 are spaced apart along their axial direction. The outer peripheral surface of the first semi-cylinder 2211 is connected to the outer peripheral surface of the column 2212 to form a mortise 2214. The opening of the mortise 2214 faces the second assembly body 222. A first arc-shaped groove 2213 is provided on the side of the first semi-cylinder 2211 facing the second assembly body 222. The second assembly body 222 includes a second semi-cylinder 2221 that mates with the first semi-cylinder 2211. The side of the second semi-cylinder 2221 facing the first assembly body 221 is provided with a tenon 2222 corresponding to the mortise 2214 and a second arc-shaped groove 2223 corresponding to the first arc-shaped groove 2213. The tenon 2222 is located within the mortise 2214.

[0038] In one embodiment, see Figure 6 and Figure 7 The assembly assembly 22 further includes a collet 225. The collet 225 has a third receiving cavity 2251 and a second through hole 2252 communicating with the third receiving cavity 2251. The first assembly body 221 and the second assembly body 222 are disposed within the third receiving cavity 2251, and the outer walls of both the first assembly body 221 and the second assembly body 222 are in contact with the cavity wall of the third receiving cavity 2251. One end of the collet 225 away from the second through hole 2252 is disposed within the first receiving cavity 11 and connected to the cavity wall of the first receiving cavity 11. The other end of the collet 225 with the second through hole 2252 is located outside the amplitude transformer 10 and connected to the locking cap 30. The rolling body 21 is movably disposed in the second through hole 2252, and at least part of the rolling body 21 is located outside the collet 225 through the second through hole 2252. By providing a collet 225 over the first assembly body 221 and the second assembly body 222, the collet 225 can restrain the first assembly body 221 and the second assembly body 222, preventing the first assembly body 221 and the second assembly body 222 from being separated by external force, and ensuring the reliability of the first assembly body 221 and the second assembly body 222 in clamping the rolling body 21.

[0039] Further, see Figure 6 and Figure 7The first accommodating cavity 11 is a conical cavity, the diameter of which gradually decreases from the first end toward the direction away from the first end. The collet 225 is a conical collet 225 adapted to the conical cavity. During installation, the end of the conical collet 225 away from the second through hole 2252 is inserted into the conical cavity, and the conical collet 225 is pushed inward until the side wall of the conical collet 225 abuts against the cavity wall. In this way, by utilizing the engagement between the side wall of the conical collet 225 and the cavity wall, the conical collet 225 can be securely and reliably installed on the amplitude transformer 10.

[0040] In one embodiment, see Figure 5 and Figure 6 The locking cap 30 is sleeved on the first end and threadedly connected to the first end. Thus, the locking cap 30 is threadedly connected to the amplitude rod 10, facilitating the installation and removal of the locking cap 30.

[0041] Of course, in other embodiments, the locking cap 30 can also be detachably connected to the first end of the amplitude rod 10 by means of snap-fit ​​or fastening.

[0042] In one embodiment, see Figure 3 The amplitude transformer 10 has a liquid inlet hole 13 on its side wall, which is used to communicate with the oil storage device. The amplitude transformer 10 has a first cooling channel 14 communicating with the liquid inlet hole 13. The assembly assembly 22 has a second cooling channel 226 communicating with the first cooling channel 14, and the rolling body 21 is disposed in the second cooling channel 226. In this way, the lubricating medium in the oil storage device can reach the rolling body 21 through the liquid inlet hole 13, the first cooling channel 14 and the second cooling channel 226 to cool and lubricate the rolling body 21. On the one hand, the lubricating medium can cool the rolling body 21 to prevent it from overheating and being damaged. On the other hand, the lubricating medium can lubricate the rolling body 21, reduce the friction between the rolling body 21 and the assembly assembly 22, and slow down the wear of the rolling body 21.

[0043] In one embodiment, see Figure 5 and Figure 6 The amplitude transformer 10 also has a second end, located at the end of the amplitude transformer 10 axially away from the first end. The second end of the amplitude transformer 10 is provided with a connecting flange 15, which includes a flange 151 and a neck 152, the neck 152 extending from the flange 151 in a direction away from the amplitude transformer 10. The ultrasonic rolling tool also includes a tool holder 40, which is sleeved on and interference-fitted with the neck 152. Thus, by providing a connecting flange 15 at the vibration node of the ultrasonic rolling tool, and by interfering with the tool holder 40, the dynamic balance and coaxiality of the tool holder 40 can be significantly improved compared to a threaded connection.

[0044] Optionally, the connecting flange 15 and the amplitude rod 10 are integrally formed. Of course, in other embodiments, the connecting flange 15 can also be connected to the amplitude rod 10 by welding or other methods, and is not limited thereto.

[0045] In one embodiment, see Figure 5 and Figure 6 The ultrasonic rolling tool further includes a piezoelectric ceramic assembly 50, an end cap 60, and a fastener 70 disposed within the tool holder 40. The piezoelectric ceramic assembly 50 is located on the side of the connecting flange 15 opposite to the amplitude transformer 10. The end cap 60 covers the side of the piezoelectric ceramic assembly 50 opposite to the connecting flange 15, and the piezoelectric ceramic assembly 50 and the end cap 60 are mounted to the connecting flange 15 using the fastener 70. Optionally, the fastener 70 may be a screw or the like, but is not limited thereto.

[0046] In this embodiment, the piezoelectric ceramic assembly 50 consists of four identical piezoelectric ceramic sheets and two sets of bent electrode sheets. The parts are clamped together by fasteners 70 and the fasteners 70 are isolated from the piezoelectric ceramic sheets by an insulating sleeve.

[0047] Further, see Figure 1 The piezoelectric ceramic assembly 50 is electrically connected to the ultrasonic generator 80. During operation, the ultrasonic generator 80 is started, and the ultrasonic generator 80 emits a high-frequency alternating electrical signal. The piezoelectric ceramic assembly converts the high-frequency electrical signal into mechanical vibration, which is further amplified by the amplitude transformer 10 and transmitted to the rolling tool head 20, realizing the high-frequency vibration of the rolling tool head 20.

[0048] In one embodiment, the ultrasonic rolling tool is designed as a half-wavelength tool to reduce the cantilever length between the tool holder 40 and the workpiece 100, thereby reducing the chatter of the tool holder 40 under deformation and rolling load. This makes the ultrasonic rolling tool holder 40 compact, lightweight, and improves the accuracy of the rolling process.

[0049] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0050] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An ultrasonic rolling tool, characterized in that, include: An amplitude transformer has a first end, the first end having a first receiving cavity and a first opening communicating with the first receiving cavity; A rolling tool head includes a rolling body and an assembly assembly. The rolling body is detachably mounted on one end of the assembly assembly, and the other end of the assembly assembly, away from the rolling body, is disposed within a first receiving cavity through a first opening. The assembly assembly includes a detachably connected first assembly body and a second assembly body. The first assembly body and the second assembly body are mated together to form a second receiving cavity with a second opening. The rolling body is movably disposed within the second receiving cavity, and at least a portion of the rolling body is located outside the second receiving cavity through the second opening. A first arc-shaped groove is provided on the side of the first assembly body facing the second assembly body. A first arc-shaped groove extends circumferentially along the first assembly body. A second arc-shaped groove is provided on the side of the second assembly body facing the first assembly body. The second arc-shaped groove extends circumferentially along the second assembly body. The first arc-shaped groove and the second arc-shaped groove together form a second receiving cavity. A tenon groove is also provided on the side of the first assembly body facing the second assembly body, and a tenon is provided on the side of the second assembly body facing the first assembly body; or, a tenon is also provided on the side of the first assembly body facing the second assembly body, and a tenon groove is provided on the side of the second assembly body facing the first assembly body; the tenon is disposed within the tenon groove; and... A locking cap is sleeved on the first end and detachably connected to the amplitude rod. The locking cap is used to lock the rolling tool head to the first end. The locking cap has a first through hole, and the rolling body is movably located in the first through hole.

2. The ultrasonic rolling tool according to claim 1, characterized in that, The first assembly body and the second assembly body are docked and fitted together to form a cylinder.

3. The ultrasonic rolling tool according to claim 2, characterized in that, The first assembly body includes a first semi-cylinder and a column with the same diameter as the first semi-cylinder. The first semi-cylinder and the column are spaced apart along their axial direction. The outer peripheral surface of the first semi-cylinder is connected to the outer peripheral surface of the column and forms the tenon groove. The opening of the tenon groove faces the second assembly body. The first arc-shaped groove is provided on the side of the first semi-cylinder facing the second assembly body. The second assembly body includes a second half-column that mates with the first half-column. The second half-column has a tenon corresponding to the tenon groove and a second arc groove corresponding to the first arc groove on the side facing the first assembly body.

4. The ultrasonic rolling tool according to claim 1, characterized in that, The first accommodating cavity is a conical cavity, and the diameter of the conical cavity gradually decreases from the first end toward the direction away from the first end; the assembly assembly also includes a collet, which is a conical collet adapted to the conical cavity.

5. The ultrasonic rolling tool according to claim 4, characterized in that, The collet has a third accommodating cavity and a second through hole communicating with the third accommodating cavity. The first assembly body and the second assembly body are disposed in the third accommodating cavity. The outer walls of the first assembly body and the second assembly body are in contact with the cavity wall of the third accommodating cavity. The end of the collet away from the second through hole is disposed in the first accommodating cavity and connected to the cavity wall of the first accommodating cavity. The end of the collet with the second through hole is located outside the amplitude transformer and connected to the locking cap. The rolling body is movably disposed in the second through hole, and at least part of the rolling body is located outside the collet through the second through hole.

6. The ultrasonic rolling tool according to any one of claims 1 to 5, characterized in that, The side wall of the amplitude transformer is provided with a liquid inlet hole; the amplitude transformer is provided with a first cooling channel communicating with the liquid inlet hole, the assembly is provided with a second cooling channel communicating with the first cooling channel, and the rolling body is disposed in the second cooling channel.

7. The ultrasonic rolling tool according to any one of claims 1 to 5, characterized in that, The amplitude transformer also has a second end located at an end of the amplitude transformer away from the first end along its axial direction. The second end is provided with a connecting flange, which includes a flange plate and a neck. The neck extends from the flange plate in a direction away from the amplitude transformer. The ultrasonic rolling tool also includes a shank, which is sleeved on the neck and has an interference fit with the neck.

8. The ultrasonic rolling tool according to claim 7, characterized in that, The ultrasonic rolling tool also includes a piezoelectric ceramic component, an end cap, and fasteners disposed within the tool holder. The piezoelectric ceramic component is disposed on the side of the connecting flange away from the amplitude transformer, and the end cap is disposed on the side of the piezoelectric ceramic component away from the connecting flange. The piezoelectric ceramic component and the end cap are installed on the connecting flange by means of the fasteners.

9. The ultrasonic rolling tool according to any one of claims 1 to 5, characterized in that, The rolling body is spherical.

10. An ultrasonic rolling device, characterized in that, Includes the ultrasonic rolling tool as described in any one of claims 1 to 9.

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