Handheld ultrasonic vibration pneumatic drill

Abstract

The invention discloses a handheld ultrasonic vibration pneumatic drill and belongs to the technical field of pneumatic drill machining, the handheld ultrasonic vibration pneumatic drill comprises a shell unit, an ultrasonic vibration unit, a pneumatic driving unit and a drill bit, and a heat dissipation channel is formed in the shell unit and used for improving the overall heat dissipation performance in the pneumatic drill; the ultrasonic vibration unit comprises an ultrasonic vibration assembly, the ultrasonic vibration assembly is rotationally arranged in the shell unit, and a part of structure of the ultrasonic vibration assembly extends out of the other end of the shell unit; the drill bit is connected with the partial structure of the ultrasonic vibration assembly extending out of the shell unit; the pneumatic driving unit is arranged in the shell unit and communicates with the heat dissipation channel. Due to the fact that the pneumatic driving unit is communicated with the air inlet, compressed air enters the shell assembly from the pneumatic driving unit, on one hand, exhausting can be conducted, on the other hand, the ultrasonic vibration assembly can be cooled, and the overall heat dissipation performance of the interior of the pneumatic drill is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic drill processing, and in particular to a handheld ultrasonic vibration pneumatic drill. Background Art

[0002] Ultrasonic vibration drilling is a branch of vibration cutting. Compared with ordinary drilling, ultrasonic vibration drilling has better processing technology effects. It can comprehensively improve the processing quality of holes and is an important development direction of modern drilling technology.

[0003] The ultrasonic vibration pneumatic drill in the prior art provides a large drilling force, which uses a transducer to convert electrical energy into mechanical energy to complete the corresponding drilling work. However, during the continuous processing of the ultrasonic vibration pneumatic drill, the high temperature of the vibration component will affect the processing quality of the workpiece, causing the workpiece to be prone to processing defects such as edge collapse, cracks and burrs.

[0004] Therefore, it is necessary to design a new type of ultrasonic vibration air drill to improve the heat dissipation of the air drill. Summary of the invention

[0005] The purpose of the present invention is to provide a handheld ultrasonic vibration air drill to solve the technical problem of poor heat dissipation of air drills in the prior art.

[0006] As conceived above, the technical solution adopted by the present invention is:

[0007] Handheld ultrasonic vibration air drill, including:

[0008] The housing unit comprises a housing component, a handle housing and a tail gun housing, wherein a cavity structure is formed in the housing component, the tail gun housing is arranged at one end of the housing component and communicated with the cavity structure, an air inlet is arranged on the tail gun housing, the handle housing is arranged at one side of the housing component and communicated with the cavity structure, an air outlet is arranged on the handle housing, and the air inlet, the tail gun housing, the housing component, the handle housing and the air outlet form a gas heat dissipation channel;

[0009] an ultrasonic vibration unit, disposed in the housing assembly and the handle housing, the ultrasonic vibration unit comprising a drill bit and an ultrasonic vibration assembly, the ultrasonic vibration assembly being rotatably disposed in the cavity structure, and a portion of the structure of the ultrasonic vibration assembly extending out of the other end of the housing assembly to be connected to the drill bit; and

[0010] A pneumatic drive unit is disposed in the tail gun housing, the pneumatic drive unit is communicated with the air inlet, and the output end of the pneumatic drive unit is transmission-connected to the ultrasonic vibration component to drive the ultrasonic vibration component and the drill bit to rotate.

[0011] A gas heat dissipation channel is provided inside the shell unit, and the gas heat dissipation channel passes through the rear gun shell, the shell assembly and the handle shell. In addition, since the pneumatic drive unit is connected with the air inlet, compressed air enters the shell assembly from the pneumatic drive unit, which can be used for exhaust on the one hand and for cooling the ultrasonic vibration assembly on the other hand, thereby effectively improving the overall heat dissipation of the inside of the air drill.

[0012] As a preferred solution of the above-mentioned handheld ultrasonic vibration air drill, the pneumatic drive unit is a pneumatic motor.

[0013] Because pneumatic motors are safe to work, explosion-proof, not affected by high temperature and vibration, and can work at full load for a long time with a small temperature rise, in addition, pneumatic motors also have a higher starting torque, so they can start under load, so pneumatic motors are selected as pneumatic drive units.

[0014] As a preferred embodiment of the above-mentioned handheld ultrasonic vibration air drill, the housing assembly includes:

[0015] A shell body, wherein the cavity structure is arranged in the shell body, the tail gun shell is arranged at one end of the shell body and is connected with the cavity structure, the handle shell is arranged at one side of the shell body, and the ultrasonic vibration unit is arranged in the shell body and the handle shell; and

[0016] An end cover is detachably arranged at the other end of the shell body, and a through hole is arranged on the end cover, and a part of the structure of the ultrasonic vibration component extends out of the cavity structure through the through hole.

[0017] An end cover is provided on the shell body, and the ultrasonic vibration component in the cavity structure is sealed by the end cover. When the ultrasonic vibration air drill is processing, it can play a role of dust prevention and sealing, preventing dust and debris from flying into the ultrasonic vibration unit and affecting the processing efficiency and quality of the ultrasonic vibration air drill.

[0018] As a preferred solution of the above-mentioned handheld ultrasonic vibration air drill, the ultrasonic vibration component includes:

[0019] A vibrator housing, wherein the vibrator housing is rotatably disposed inside the housing assembly, a receiving cavity is disposed inside the vibrator housing, and one end of the vibrator housing is drivingly connected to the pneumatic drive unit; and

[0020] An ultrasonic vibrator is disposed in the accommodating cavity and connected to the vibrator housing. A portion of the structure of the ultrasonic vibrator extends out of the housing component. The drill bit is connected to the ultrasonic vibrator extending out of the housing component.

[0021] The ultrasonic vibrator is arranged in the vibrator housing to form an integral structure, so as to realize the overall rotation.

[0022] As a preferred embodiment of the above-mentioned handheld ultrasonic vibration air drill, the ultrasonic vibrator comprises:

[0023] A transducer is disposed in the accommodating cavity; and

[0024] A horn, one end of which is connected to the transducer, and the other end of which extends out of the accommodating cavity and the housing assembly, and the end of the horn connected to the transducer is connected to the vibrator housing, and the outer diameter of the horn gradually decreases from the end connected to the transducer to the other end.

[0025] The transducer is arranged inside the vibrator housing, making the overall structure of the handheld ultrasonic vibration air drill more compact; part of the structure of the amplitude transformer is arranged in the accommodating cavity, preventing dust or debris from affecting the normal operation of the amplitude transformer during processing, and effectively improving the processing quality.

[0026] As a preferred embodiment of the above-mentioned handheld ultrasonic vibration air drill, the ultrasonic vibration unit further comprises:

[0027] An insulating ring, the insulating ring is sleeved on the circumferential outer side of the vibrator housing;

[0028] A collector ring, wherein the collector ring is sleeved on the circumferential outer side of the insulating ring, and the inner side of the collector ring is connected to the transducer through a wire; and

[0029] A carbon brush assembly is arranged in the handle housing, and a part of the structure of the carbon brush assembly extends into the housing assembly and elastically abuts against the collector ring.

[0030] The carbon brush assembly is used in conjunction with the collector ring to conduct electricity, thereby stably providing electrical energy to the transducer. Since the carbon brush assembly has a long service life, the wear on the collector ring is relatively small. In addition, the carbon brush assembly also has good commutation and current collecting performance, making the overall guidance more stable.

[0031] As a preferred solution of the above-mentioned handheld ultrasonic vibration air drill, a through hole connected to the handle shell is provided on the side wall of the shell assembly, and a partial structure of the carbon brush assembly extends into the shell assembly through the through hole.

[0032] The carbon brush assembly and the collector ring cooperate with each other by using the through hole on the side wall of the shell assembly. This structure can fix the carbon brush assembly without affecting the ultrasonic vibration processing. In addition, the through hole is set on the shell assembly, which is beneficial to the replacement of the carbon brush assembly.

[0033] As a preferred embodiment of the above-mentioned handheld ultrasonic vibration air drill, the ultrasonic vibration unit further comprises:

[0034] A plug is mounted on the handle housing and is electrically connected to the carbon brush assembly.

[0035] The plug can build a bridge of communication between blocked parts in the circuit or isolated circuits, so that the current can flow and ensure the working safety of the handheld ultrasonic vibration air drill.

[0036] As a preferred solution of the above-mentioned handheld ultrasonic vibration air drill, the plug is arranged on the end surface of the handle shell that is not connected to the shell assembly.

[0037] The plug is arranged on the end surface of the handle shell which is not connected to the shell component, so that the ultrasonic vibration air drill is more conveniently connected to the outside.

[0038] As a preferred embodiment of the above-mentioned handheld ultrasonic vibration air drill, the handheld ultrasonic vibration air drill further includes a transmission assembly, and the transmission assembly includes:

[0039] A rotating wheel and a connecting piece, wherein the rotating wheel is arranged at the output end of the pneumatic drive unit, and the connecting piece is connected to the rotating wheel and the ultrasonic vibration component.

[0040] Since the transmission wheel has a compact structure and a large transmission ratio, the transmission wheel is used in conjunction with the connecting piece to make the transmission of the entire transmission assembly more stable, thereby being able to withstand a larger load.

[0041] Beneficial effects of the present invention:

[0042] The handheld ultrasonic vibration air drill proposed in the present invention has a gas heat dissipation channel arranged inside the shell unit, and the gas heat dissipation channel passes through the rear gun shell, the shell assembly and the handle shell. In addition, since the pneumatic drive unit is connected to the air inlet, compressed air enters the shell assembly of the ultrasonic vibration unit from the pneumatic drive unit, which can be used for exhaust on the one hand and for cooling the ultrasonic vibration assembly on the other hand, thereby effectively improving the overall heat dissipation of the inside of the air drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of a handheld ultrasonic vibration air drill provided by the present invention;

[0044] Figure 2 It is an exploded view of the handheld ultrasonic vibration air drill provided by the present invention;

[0045] Figure 3 It is a cross-sectional view of the handheld ultrasonic vibration air drill provided by the present invention.

[0046] In the figure:

[0047] 1. Shell unit; 11. Shell assembly; 111. Shell body; 112. End cover; 12. Handle shell; 13. Tail gun shell;

[0048] 2. Ultrasonic vibration unit; 21. Drill bit; 22. Ultrasonic vibration assembly; 221. Ultrasonic vibrator; 2211. Amplifier; 2212. Transducer; 222. Vibrator housing; 23. Insulating ring; 24. Collector ring; 25. Carbon brush assembly; 26. Collet;

[0049] 3. Pneumatic drive unit;

[0050] 4. Transmission assembly; 41. Rotating wheel; 42. Connecting piece. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0055] This embodiment provides a handheld ultrasonic vibration air drill, such as Figure 1-Figure 3As shown, the handheld ultrasonic vibration air drill comprises a housing unit 1, an ultrasonic vibration unit 2 and a pneumatic drive unit 3, wherein a heat dissipation channel is arranged inside the housing unit 1 to improve the overall heat dissipation performance inside the air drill; the ultrasonic vibration unit 2 comprises a drill bit 21 and an ultrasonic vibration assembly 22, the ultrasonic vibration assembly 22 is rotatably arranged inside the housing unit 1, a part of the structure of which extends out of the other end of the housing unit 1 and is connected to the drill bit 21; the pneumatic drive unit 3 is arranged inside the housing unit 1 and is connected to the heat dissipation channel. The pneumatic drive unit 3 is connected to the air inlet so that compressed air enters the ultrasonic vibration unit 2 from the pneumatic drive unit 3, which can exhaust air on the one hand and cool down the ultrasonic vibration unit 2 on the other hand, effectively improving the overall heat dissipation performance inside the air drill.

[0056] Specifically, Figure 2 and Figure 3 As shown, the shell unit 1 includes a shell component 11, a handle shell 12 and a tail gun shell 13, wherein a cavity structure is formed inside the shell component 11, the tail gun shell 13 is arranged at one end of the shell component 11 and is communicated with the cavity structure, an air inlet is arranged on the tail gun shell 13, the handle shell 12 is arranged on one side of the shell component 11 and is communicated with the cavity structure, an air outlet is arranged on the handle shell 12, the air inlet, the tail gun shell 13, the shell component 11, the handle shell 12 and the air outlet form the above-mentioned gas heat dissipation channel, and the heat dissipation channel passes through the tail gun shell 13, the shell component 11 and the handle shell 12, thereby improving the overall heat dissipation of the inside of the air drill.

[0057] Specifically, the housing assembly 11 includes a housing body 111 and an end cover 112, wherein a cavity structure is provided in the housing body 111, a tail gun shell 13 is provided at one end of the housing body 111 and is connected to the cavity structure, a handle housing 12 is provided at one side of the housing body 111, and an ultrasonic vibration unit 2 is provided in the housing body 111 and the handle housing 12; the end cover 112 is detachably provided at the other end of the housing body 111, a through hole is provided on the end cover 112, and part of the structure of the ultrasonic vibration assembly 22 extends out of the cavity structure through the through hole. The end cover 112 is provided on the housing body 111, and the ultrasonic vibration assembly 22 in the cavity structure is sealed by the end cover 112, which can play a role of dustproof and sealing when the ultrasonic vibration air drill is processing, so as to prevent dust and debris from flying into the ultrasonic vibration unit 2, and avoid affecting the processing efficiency and quality of the ultrasonic vibration air drill.

[0058] Furthermore, if Figure 3As shown, the ultrasonic vibration assembly 22 includes a vibrator housing 222 and an ultrasonic vibrator 221, wherein the vibrator housing 222 is rotatably arranged inside the housing assembly 11, a receiving cavity is arranged inside the vibrator housing 222, and one end of the vibrator housing 222 is transmission-connected to the pneumatic drive unit 3; the ultrasonic vibrator 221 is arranged in the receiving cavity and connected to the vibrator housing 222, and part of its structure extends out of the housing assembly 11, and the drill bit 21 is connected to the part of the ultrasonic vibrator 221 extending out of the housing assembly 11. Applying ultrasonic vibration to the processing field greatly improves the finish of the processing, reduces the damage rate of the drill bit 21, and increases the life of the drill bit 21; when performing ultrasonic processing, the cutting force received by the drill bit 21 can be reduced by several times, thereby reducing the surface roughness of the workpiece to be processed, and the ultrasonic vibrator 221 of the ultrasonic vibration assembly 22 is arranged in the vibrator housing 222 to form an integral structure, so as to realize the rotation of the ultrasonic vibrator 221 and the vibrator housing 222 as a whole.

[0059] Specifically, the handheld ultrasonic vibration air drill also includes a collet 26, wherein one end of the collet 26 is sleeved on the drill bit 21, and the other end is connected to the horn 2211. In actual application, the collet 26 is a clamping part on the tool, which has the advantages of uniform clamping force, a large clamping range, and is suitable for clamping tools of different shapes and sizes. Since the ultrasonic air drill needs to withstand a large cutting resistance during the processing, the setting of the collet 26 can improve the stability of the processing and further increase the processing quality.

[0060] Furthermore, the ultrasonic vibrator 221 includes a transducer 2212 and a horn 2211, wherein the transducer 2212 is arranged in the above-mentioned accommodation cavity; one end of the horn 2211 is connected to the transducer 2212, and the other end extends out of the accommodation cavity and the housing assembly 11, and the end of the horn 2211 connected to the transducer 2212 is connected to the vibrator housing 222, and in addition, the outer diameter of the horn 2211 gradually decreases from the end connected to the transducer 2212 to the other end. The transducer 2212 is arranged inside the vibrator housing 222, so that the overall structure of the handheld ultrasonic vibration air drill is more compact; the partial structure of the horn 2211 is arranged in the accommodation cavity, so that the normal operation of the horn 2211 is prevented from being affected by dust or debris during the processing, and the processing quality is effectively improved.

[0061] Furthermore, the ultrasonic vibration unit 2 also includes an insulating ring 23, a collector ring 24 and a carbon brush assembly 25, wherein the insulating ring 23 is sleeved on the circumferential outer side of the vibrator housing 222; the collector ring 24 is sleeved on the circumferential outer side of the insulating ring 23, and the inner side of the collector ring 24 is connected to the transducer 2212 through a wire; the carbon brush assembly 25 is arranged in the handle housing 12, and part of the structure of the carbon brush assembly 25 extends into the housing assembly 11 and elastically abuts against the collector ring 24. The carbon brush assembly 25 is used to conduct electricity in conjunction with the collector ring 24, so as to stably provide electric energy to the transducer 2212. Since the carbon brush assembly 25 has a long service life, the wear on the collector ring 24 is relatively small, and the carbon brush assembly 25 also has good commutation and current collection performance, making the overall guidance more stable.

[0062] Specifically, a through hole connected to the handle housing 12 is provided on the side wall of the housing assembly 11, and a part of the structure of the carbon brush assembly 25 extends into the housing assembly 11 through the through hole. The carbon brush and the collector ring 24 cooperate with each other by using the through hole on the side wall of the housing assembly 11. This structure can fix the carbon brush without affecting the ultrasonic vibration processing. In addition, the through hole is provided on the housing assembly 11, which is beneficial to the replacement of the carbon brush.

[0063] Furthermore, the ultrasonic vibration unit 2 also includes a plug, which is mounted on the handle housing 12 and electrically connected to the carbon brush assembly 25. The plug is mostly used to bridge the blocked part of the circuit or the isolated circuit, so as to make the current flow, thereby realizing the separation of electricity and gas, and ensuring the working safety of the handheld ultrasonic vibration air drill.

[0064] Specifically, the plug is disposed on the end surface of the handle housing 12 that is not connected to the housing assembly 11, so that the ultrasonic vibration air drill is more conveniently connected to the outside.

[0065] Furthermore, the pneumatic drive unit 3 is a pneumatic motor. Since the pneumatic motor is safe to work, has explosion-proof performance, is not affected by high temperature and vibration, and can work at full load for a long time with a small temperature rise, in addition, the pneumatic motor also has a high starting torque, so it can be started under load, so the pneumatic motor is selected as the pneumatic drive unit 3.

[0066] Furthermore, the handheld ultrasonic vibration air drill also includes a transmission assembly 4, including a rotating wheel 41 and a connecting piece 42, wherein the rotating wheel 41 is arranged at the output end of the pneumatic drive unit 3; the connecting piece 42 is connected to the rotating wheel 41 and the ultrasonic vibration assembly 22. Since the transmission wheel has a compact structure and a large transmission ratio, the transmission wheel is used in conjunction with the connecting piece 42 to make the transmission of the transmission assembly 4 more stable as a whole, so that it can withstand a large load.

[0067] Preferably, the rotating wheel 41 can also be replaced by a spur gear. Compared with the traditional rotating gear, the spur gear has a lower speed during transmission and can better transmit torque. In addition, the spur gear has the advantages of simple design, easy manufacturing, low cost, high efficiency, and can achieve various transmission ratios. The disadvantage is that the noise is high. Therefore, in the actual application process, it can be selected according to the needs.

[0068] Further preferably, the connecting member 42 can be a gear pin. Since the gear of the pin wheel is a round pin, it has the advantages of simple structure, convenient processing, low cost, etc. compared with general gears. Therefore, in actual application, it can be selected according to needs.

[0069] In this embodiment, the power of the pneumatic motor and the stiffness of the spur gear need to be designed according to the actual working conditions, wherein the air inlet of the pneumatic motor is arranged at the end of the gun housing 13 at the tail of the air drill, the torque of the pneumatic motor is calculated and designed according to the ultrasonic vibration unit 2 and the processing material, the air inlet of the pneumatic motor is at the center of the gun housing 13 at the tail of the air drill, and the diameter of the exhaust port of the pneumatic motor is smaller than the diameter of the air inlet; the stiffness of the spur gear is calculated according to the elastic modulus and structural form of the material.

[0070] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A handheld ultrasonic vibration air drill, characterized in that: include: A housing unit (1) comprises a housing component (11), a handle housing (12) and a tail gun housing (13); a cavity structure is formed inside the housing component (11); the tail gun housing (13) is arranged at one end of the housing component (11) and is in communication with the cavity structure; an air inlet is arranged on the tail gun housing (13); the handle housing (12) is arranged at one side of the housing component (11) and is in communication with the cavity structure; an air outlet is arranged on the handle housing (12); the air inlet, the tail gun housing (13), the housing component (11), the handle housing (12) and the air outlet form a gas heat dissipation channel; an ultrasonic vibration unit (2) disposed in the housing component (11) and the handle housing (12), the ultrasonic vibration unit (2) comprising a drill bit (21) and an ultrasonic vibration component (22), the ultrasonic vibration component (22) being rotatably disposed in the cavity structure, and a portion of the structure of the ultrasonic vibration component (22) extending out of the other end of the housing component (11) to be connected to the drill bit (21); and A pneumatic drive unit (3), the pneumatic drive unit (3) being arranged in the rear gun housing (13), the pneumatic drive unit (3) being connected to the air inlet, and the output end of the pneumatic drive unit (3) being transmission-connected to the ultrasonic vibration component (22) to drive the ultrasonic vibration component (22) and the drill bit (21) to rotate.

2. The handheld ultrasonic vibration air drill according to claim 1, characterized in that: The pneumatic drive unit (3) is a pneumatic motor.

3. The handheld ultrasonic vibration air drill according to claim 1, characterized in that: The housing component (11) comprises: A shell body (111), wherein the cavity structure is arranged in the shell body (111), the tail gun shell (13) is arranged at one end of the shell body (111) and is connected to the cavity structure, the handle shell (12) is arranged at one side of the shell body (111), and the ultrasonic vibration unit (2) is arranged in the shell body (111) and the handle shell (12); and An end cover (112) is detachably arranged at the other end of the shell body (111), and a through hole is arranged on the end cover (112), and a part of the structure of the ultrasonic vibration component (22) extends out of the cavity structure through the through hole.

4. The handheld ultrasonic vibration air drill according to claim 1, characterized in that: The ultrasonic vibration component (22) comprises: A vibrator housing (222), the vibrator housing (222) being rotatably disposed inside the housing assembly (11), a receiving cavity being disposed inside the vibrator housing (222), and one end of the vibrator housing (222) being drivingly connected to the pneumatic drive unit (3); and An ultrasonic vibrator (221), wherein the ultrasonic vibrator (221) is disposed in the accommodating cavity and connected to the vibrator housing (222), a portion of the structure of the ultrasonic vibrator (221) protrudes from the housing component (11), and the drill bit (21) is connected to the ultrasonic vibrator (221) that protrudes from the housing component (11).

5. The handheld ultrasonic vibration air drill according to claim 4, characterized in that: The ultrasonic vibrator (221) comprises: A transducer (2212) is disposed in the accommodating cavity; and A variable amplitude rod (2211), one end of which is connected to the transducer (2212), and the other end of which extends out of the accommodating cavity and the housing assembly (11); the end of the variable amplitude rod (2211) connected to the transducer (2212) is connected to the vibrator housing (222); and the outer diameter of the variable amplitude rod (2211) gradually decreases from the end connected to the transducer (2212) to the other end.

6. The handheld ultrasonic vibration air drill according to claim 4, characterized in that: The ultrasonic vibration unit (2) further comprises: An insulating ring (23), the insulating ring (23) being sleeved on the circumferential outer side of the vibrator housing (222); A collector ring (24), the collector ring (24) being sleeved on the circumferential outer side of the insulating ring (23), the inner side of the collector ring (24) being connected to the transducer (2212) via a wire; and A carbon brush assembly (25) is disposed in the handle housing (12), and a portion of the structure of the carbon brush assembly (25) extends into the housing assembly (11) and elastically abuts against the collector ring (24).

7. The handheld ultrasonic vibration air drill according to claim 6, characterized in that: A through hole communicating with the handle housing (12) is provided on the side wall of the housing assembly (11), and a partial structure of the carbon brush assembly (25) extends into the housing assembly (11) through the through hole.

8. The handheld ultrasonic vibration air drill according to claim 6, characterized in that: The ultrasonic vibration unit (2) further comprises: A plug is mounted on the handle housing (12) and is electrically connected to the carbon brush assembly (25).

9. The handheld ultrasonic vibration air drill according to claim 8, characterized in that: The plug is arranged on an end surface of the handle housing (12) at an end not connected to the housing assembly (11).

10. The handheld ultrasonic vibration air drill according to any one of claims 1 to 9, characterized in that: The handheld ultrasonic vibration air drill further comprises a transmission assembly (4), wherein the transmission assembly (4) comprises: A rotating wheel (41) and a connecting member (42), wherein the rotating wheel (41) is arranged at the output end of the pneumatic drive unit (3), and the connecting member (42) is connected to the rotating wheel (41) and the ultrasonic vibration component (22).

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