Ultrasonic drill

Abstract

The utility model relates to the technical field of drilling tools, and discloses an ultrasonic drill which comprises an ultrasonic drill body, a mounting part and a drill bit, the ultrasonic drill body comprises an ultrasonic transducer and an amplitude-change pole, the mounting part is fixed on the amplitude-change pole, one end of the drill bit is fixed on the mounting part, and the other end of the drill bit extends back to the ultrasonic transducer. The distance between the end, away from the ultrasonic transducer, of the drill bit and the side face, back to the ultrasonic transducer, of the installation part is L mm, the length of the amplitude-change pole is T mm, and when L is larger than or equal to 5 and smaller than or equal to 40, L and T are in negative correlation; when L is greater than or equal to 60 and less than or equal to 240, L and T are in negative correlation; when L is larger than or equal to 260 and smaller than or equal to 300, L and T are in positive correlation, when L is within the range and L and T meet the correlation, the performance of the ultrasonic transducer and the performance of the amplitude-change pole are better matched with the performance of the drill bit, when a workpiece is machined, ultrasonic vibration can be better transmitted to the drill bit, the vibration effect of the front end of the drill bit is guaranteed, the workpiece machining precision can be improved, and the machining quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling tools, in particular to an ultrasonic drill. Background Art

[0002] With the development of ultrasonic technology, adding ultrasonic vibration to the drilling tool can achieve drilling work on some difficult-to-process materials, such as titanium alloys, carbon fiber reinforced composites, and carbon fiber reinforced composites / alloy laminated structures.

[0003] In the related technology, the ultrasonic drill includes a rotating driving body, an ultrasonic transducer, a variable amplitude rod, a mounting part and a drill bit. The rotating driving body is connected to the ultrasonic transducer, the drill bit is connected to the mounting part, the mounting part is fixed on the variable amplitude rod, and the rotating driving body drives the ultrasonic transducer, the variable amplitude rod and the drill bit to rotate; in actual applications, the vibration effect of the front end of the drill bit will affect the surface processing quality and processing efficiency of the workpiece, and under different working conditions, it may be necessary to use an ultrasonic drill with a different drill clamping length (the length of the drill bit extending out of the mounting part), but the change of the drill clamping length will inevitably affect the vibration effect of the front end of the drill bit, thereby affecting the drilling accuracy and efficiency. Utility Model Content

[0004] The utility model aims to provide an ultrasonic drill, the vibration effect of the front end of the drill bit of which is good, and the workpiece is processed by the ultrasonic drill, the workpiece surface quality is good, and the processing efficiency is high.

[0005] In order to achieve the above-mentioned object, the utility model provides an ultrasonic drill, including an ultrasonic drill body, a mounting member and a drill bit, wherein the ultrasonic drill body includes a connection between an ultrasonic transducer and an amplitude transformer, the mounting member is fixed to the amplitude transformer, one end of the drill bit is fixed to the mounting member, and the other end extends away from the ultrasonic transducer, in the length direction of the drill bit, the distance between the end of the drill bit away from the ultrasonic transducer and the side of the mounting member facing away from the ultrasonic transducer is L mm, the length of the amplitude transformer is T mm, wherein,

[0006] When 5≤L≤40, L is negatively correlated with T;

[0007] When 60≤L≤240, L is negatively correlated with T;

[0008] When 260≤L≤300, L and T are positively correlated.

[0009] In a specific embodiment of the present invention,

[0010] When 5≤L≤40, 40≤T≤58, and L is negatively correlated with T;

[0011] When 60≤L≤240, 45≤T≤85, and L is negatively correlated with T;

[0012] When 260≤L≤300, 48≤T≤60, and L and T are positively correlated.

[0013] In a specific embodiment of the present invention, the vibration frequency of the ultrasonic drill is 19KHz to 40KHz.

[0014] In a specific embodiment of the utility model, a mounting hole is provided on the side of the horn facing away from the ultrasonic transducer;

[0015] The mounting member is a collet, and the collet is detachably connected to the mounting hole.

[0016] In a specific embodiment of the utility model, the collet has an external thread connection portion, and the inner wall of the mounting hole is provided with an internal thread connection portion, and the external thread connection portion is meshed with the internal thread connection portion.

[0017] In a specific embodiment of the utility model, the outer peripheral wall of the collet has a frustum portion, and the axis of the frustum portion coincides with the axis of the collet;

[0018] The hole wall of the mounting hole comprises a chamfered surface, and the chamfered surface is connected to the end surface of the horn facing away from the ultrasonic transducer;

[0019] Wherein, the side surface of the frustum portion contacts the chamfered surface so that the collet clamps the drill bit.

[0020] In a specific embodiment of the utility model, the ultrasonic drill body further includes a rotary drive member, a mounting shell, a transducer housing, an ultrasonic wireless transmitting unit, and an ultrasonic wireless receiving unit;

[0021] The mounting shell is fixed to the rotating driving member, and an opening is provided at one end of the mounting shell away from the rotating driving member;

[0022] The transducer housing is rotatably connected in the mounting shell, and one end of the transducer housing along its length direction is drivingly connected to the power output shaft of the rotary drive member, and a mounting groove is provided on the side of the transducer housing facing away from the rotary drive member;

[0023] One end of the ultrasonic transducer away from the mounting member is fixedly disposed in the mounting groove, and the amplitude rod extends from the mounting groove to the outside of the notch and extends out of the mounting shell;

[0024] The ultrasonic wireless transmitting unit is fixed in the mounting shell and arranged around the transducer housing;

[0025] The ultrasonic wireless receiving unit is fixed on the outer peripheral wall of the transducer housing and arranged around the transducer housing, and the ultrasonic wireless transmitting unit is arranged opposite to the ultrasonic wireless receiving unit.

[0026] In a specific embodiment of the utility model, a side of the transducer housing facing the rotary drive member is provided with an avoidance groove, and a power output shaft portion of the rotary drive member is inserted into the avoidance groove.

[0027] In a specific embodiment of the utility model, the ultrasonic drill body further comprises a waterproof power plug, which is fixed on the outer wall of the mounting shell and is conductively connected to the ultrasonic wireless transmitting unit.

[0028] In a specific embodiment of the utility model, the rotary drive member includes a driving body and a pneumatic motor. The pneumatic motor is arranged in the driving body, and the pneumatic motor has the power output shaft.

[0029] In a specific embodiment of the utility model, the driving body includes a mounting part, a handle and a control button, the handle is connected to the mounting part, the control button is arranged on the handle, the pneumatic motor is arranged in the mounting part, and the control button is used to control the operation of the pneumatic motor.

[0030] The ultrasonic drill of the utility model has the following beneficial effects compared with the prior art:

[0031] The ultrasonic drill of the utility model has a distance of L mm from one end of the drill bit away from the ultrasonic transducer to the end face of the mounting piece facing away from the ultrasonic transducer, and a length of the amplitude rod of T mm, wherein when 5≤L≤40, L is negatively correlated with T; when 60≤L≤240, L is negatively correlated with T; when 260≤L≤300, L is positively correlated with T. After analysis and verification, when L satisfies the above corresponding range and L and T are in a certain correlation, the performance of the ultrasonic transducer, the amplitude rod and the drill bit is more adapted, the front end of the drill bit is at the maximum vibration position, and the vibration loss at other positions is small. By using the ultrasonic drill to process a workpiece, the ultrasonic vibration can be better transmitted to the drill bit, and the vibration effect of the front end of the drill bit is ensured to be optimal, thereby improving the processing accuracy of the workpiece surface, improving the processing quality and efficiency of the workpiece, and improving the energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of an ultrasonic drill according to an embodiment of the utility model;

[0033] Figure 2 It is a cross-sectional view of the structure of the ultrasonic drill part of the embodiment of the utility model;

[0034] Figure 3This is a structural diagram of the ultrasonic transducer, horn, mounting member and drill bit in the embodiment of the utility model;

[0035] Figure 4 It is a structural diagram of an ultrasonic transducer and a horn in an embodiment of the utility model;

[0036] Figure 5 It is a structural diagram of the mounting member of the embodiment of the utility model;

[0037] Figure 6 This is a finite element analysis diagram of the embodiment of the utility model when L=5 and T=58;

[0038] Figure 7 This is a finite element analysis diagram of the embodiment of the utility model when L=20 and T=48;

[0039] Figure 8 This is a finite element analysis diagram of the embodiment of the utility model when L=40 and T=40;

[0040] Fig. 9 This is a finite element analysis diagram of the embodiment of the utility model when L=60 and T=85;

[0041] Fig.10 This is a finite element analysis diagram of the embodiment of the utility model when L=160 and T=60;

[0042] Fig.11 This is a finite element analysis diagram of the embodiment of the utility model when L=240 and T=45;

[0043] Fig.12 This is a finite element analysis diagram of the embodiment of the utility model when L=260 and T=48;

[0044] Fig.13 This is a finite element analysis diagram of the embodiment of the utility model when L=300 and T=60;

[0045] Fig.14 It is a relationship diagram between L and T in an embodiment of the present utility model.

[0046] In the figure, 1. ultrasonic drill body; 11. ultrasonic transducer; 111. amplitude transformer; 100. mounting hole; 1001. chamfered surface; 12. rotary drive member; 121. drive body; 1211. mounting portion; 1212. handle; 1213. control button; 13. mounting shell; 14. transducer housing; 141. mounting slot; 142. avoidance slot; 15. ultrasonic wireless transmitting unit; 16. ultrasonic wireless receiving unit; 17. waterproof power plug; 2. mounting member; 21. threaded connection portion; 22. frustum portion; 3. drill bit. DETAILED DESCRIPTION

[0047] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0048] like Figure 1-5 As shown, an ultrasonic drill according to an embodiment of the utility model comprises an ultrasonic drill body 1, a mounting member 2 and a drill bit 3. The ultrasonic drill body 1 comprises an ultrasonic transducer 11 and an horn 111. The ultrasonic transducer 11 is connected to the horn 111. The mounting member 2 is fixed to the horn 111. One end of the drill bit 3 is plugged and fixed to the mounting member 2, and the other end extends away from the ultrasonic transducer 11. In the length direction of the drill bit 3, the distance from one end of the drill bit 3 away from the ultrasonic transducer 11 to the end face of the mounting member 2 facing away from the ultrasonic transducer 11 is L mm, that is, the clamping length of the drill bit. The length of the horn 111 is T mm, wherein when 5≤L≤40, L is negatively correlated with T; when 60≤L≤240, L is negatively correlated with T; when 260≤L≤300, L is positively correlated with T.

[0049] When drilling, the drill bit at the front end of the ultrasonic drill acts on the workpiece. Only when the front end of the drill bit vibrates the most and the ultrasonic transducer, horn and other units connected thereto vibrate weakly, that is, the vibration loss of other units is small, can the efficiency of acting on the workpiece reach the highest. When L meets the above corresponding range, and L and T have a certain correlation, the performance of the ultrasonic transducer, horn and drill bit is more adapted, the front end of the drill bit is at the maximum vibration position, and the vibration loss of other positions is small. Using this ultrasonic drill to process the workpiece can better transmit the ultrasonic vibration to the drill bit, ensure the best vibration effect of the front end of the drill bit, improve the processing accuracy of the workpiece surface, improve the processing quality and efficiency of the workpiece, and improve energy utilization.

[0050] Furthermore, when 5≤L≤40, 40≤T≤58, and L is negatively correlated with T;

[0051] When 60≤L≤240, 45≤T≤85, and L is negatively correlated with T;

[0052] When 260≤L≤300, 48≤T≤60, and L and T are positively correlated.

[0053] Specifically, the horn 111 is connected to the ultrasonic transducer 11 , which is prior art and will not be elaborated in the present invention. The length of the horn 111 refers to the length from the position where the horn 111 is connected to the ultrasonic transducer 11 to the end of the horn 111 away from the ultrasonic transducer 11 .

[0054] For the size range: 5≤L≤40, as a specific implementation of the utility model, such as Figure 6As shown in the finite element analysis diagram, L = 5, T = 58, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size condition, the vibration effect of the drill bit 3 is the best, and the ultrasonic machining efficiency is the highest; Figure 7 As shown in the finite element analysis diagram, L = 20, T = 48, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest; and as Figure 8 As shown in the finite element analysis diagram, where L=40, T=40, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest.

[0055] For the size range: 60≤L≤240, as a specific implementation of the utility model, such as Fig. 9 As shown in the finite element analysis diagram, L = 60, T = 85, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest; and as Fig.10 As shown in the finite element analysis diagram, L = 160, T = 60, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest; and as Fig.11 As shown in the finite element analysis diagram, where L=240 and T=45, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest.

[0056] For the size range: 260≤L≤300, as a specific implementation of the utility model, such as Fig.12 As shown in the finite element analysis diagram, L = 260, T = 48, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest; and as Fig.13 As shown in the finite element analysis diagram, where L=300 and T=60, it can be seen that the vibration of the front end of the drill bit 3 reaches the strongest, while the vibration of the ultrasonic drill body 1 is the weakest, and the vibration loss is relatively small, that is, under this size, the vibration effect of the drill bit 3 is the best and the efficiency is the highest.

[0057] The relationship between the distance L between the end of the drill bit 3 away from the ultrasonic transducer 11 and the end surface of the mounting member 2 facing away from the ultrasonic transducer 11 and the length T of the horn 111 corresponding to 5≤L≤40, 60≤L≤240, and 260≤L≤300 is as follows: Fig.14 shown.

[0058] In summary, after finite element analysis, L and T satisfy the above-mentioned corresponding ranges, and there is a correlation between the two. The performance of the ultrasonic transducer 11, the amplitude transformer 111 and the drill bit 3 is more adapted. The ultrasonic drill is used to process the workpiece, which can better transmit the ultrasonic vibration to the drill bit 3 and ensure the best vibration effect at the front end of the drill bit 3, thereby improving the processing accuracy of the workpiece surface, improving the processing quality and efficiency of the workpiece, and improving energy utilization.

[0059] In this embodiment, the vibration frequency of the ultrasonic drill is 19KHz~40KHz, and the vibration frequency of the ultrasonic drill is related to the vibration frequency of the ultrasonic transducer 11. The ultrasonic drill at this vibration frequency, combined with the above-mentioned dimensional relationship of L and T, has better processing accuracy and quality for the workpiece surface.

[0060] like Figure 4 As shown, the end surface of the horn 111 facing away from the ultrasonic transducer 11 is provided with a mounting hole 100; Figure 5 As shown, the mounting member 2 is a collet, which is a standard part and does not need to be processed by itself. The production cost of the ultrasonic drill is low, and the collet can stably install the drill bit 3.

[0061] like Figure 2 As shown, the collet is detachably connected to the mounting hole 100. In different application scenarios, the type of the drill bit 3 can be replaced by removing the collet, and the clamping length of the drill bit can also be adjusted. Based on this, the ultrasonic drill can be suitable for different application scenarios. Specifically, Figure 5 As shown, the collet has an external threaded connection portion 21; and the inner wall of the mounting hole 100 is provided with an internal threaded connection portion, and the external threaded connection portion 21 is meshed with the internal threaded connection portion, based on which the collet and the amplitude transformer 111 are detachably connected, with a simple structure and convenient operation.

[0062] Furthermore, if Figure 5 As shown, the outer peripheral wall of the collet has a frustum portion 22, and the axis of the frustum portion 22 coincides with the axis of the collet. The collet of this structure is a CT-6 chuck, which is an existing standard part. The utility model does not elaborate on this. This mounting part 2 fixes the drill bit 3, and the ultrasonic drill is simple to operate when replacing the drill bit 3, which takes less time and is more efficient.

[0063] Based on the above-mentioned structure of the mounting member 2, correspondingly, Figure 2 and 4As shown, the hole wall of the mounting hole 100 includes a chamfered surface 1001, and the chamfered surface 1001 is connected to the end surface of the horn 111 facing away from the ultrasonic transducer 11, that is, the chamfered surface is arranged at the end of the mounting hole 100 away from the ultrasonic transducer; and the side surface of the frustum portion 22 contacts the chamfered surface 1001, so that the collet clamps the drill bit 3. With this structure of the horn 111, the drill bit 3 can be clamped during the process of the collet being fixed in the mounting hole 100 by threads, and the operation is simple.

[0064] In this embodiment, if Figure 2 As shown, the ultrasonic drill body 1 includes a rotary drive member 12, a mounting shell 13, a transducer housing 14, an ultrasonic wireless transmitting unit 15 and an ultrasonic wireless receiving unit 16; the mounting shell 13 is fixed to the rotary drive member 12, and an end of the mounting shell 13 away from the rotary drive member 12 is provided with an opening; the transducer housing 14 is rotatably connected to the mounting shell 13, and one end of the transducer housing 14 along its length direction is drivingly connected to the power output shaft of the rotary drive member 12, and the end surface of the transducer housing 14 facing away from the rotary drive member 12 is provided with a mounting groove 141. Specifically, the outer peripheral wall of the transducer housing 14 is connected to the bearing, and is rotatably connected to the mounting shell 13 through the bearing, and the transducer housing 14 is connected to the mounting shell 13 through the coupling and other parts. A transmission connection with the rotating drive member 12 is realized; the ultrasonic transducer 11 away from the mounting member 2 is fixedly arranged in the mounting groove 141, and the horn 111 extends from the mounting groove 141 to the outside of the notch, and extends to the outside of the mounting shell 13, that is, the ultrasonic transducer is fixedly arranged in the mounting groove 141, and the horn 111 passes through the notch of the mounting groove 141 and the opening of the mounting shell 13 to extend to the outside of the mounting shell 13; the ultrasonic wireless transmitting unit 15 is fixed in the mounting shell 13 and arranged around the transducer housing 14; the ultrasonic wireless receiving unit 16 is fixed on the outer peripheral wall of the transducer housing 14 and arranged around the transducer housing 14, and the ultrasonic wireless transmitting unit 15 is arranged opposite to the ultrasonic wireless receiving unit 16. In the present application, the ultrasonic wireless transmitting unit 15 and the ultrasonic wireless receiving unit 16 are coaxially arranged to form a left-right structure, and of course, they can also be concentrically arranged to form an inner and outer ring structure, that is, the ultrasonic wireless transmitting unit is arranged around the ultrasonic wireless receiving unit.

[0065] In the ultrasonic drill body 1 of the above structure, the ultrasonic wireless transmitting unit 15 is powered on, and the electric energy enters the ultrasonic wireless transmitting unit 15 and the ultrasonic wireless receiving unit 16, and enters the ultrasonic transducer 11 to be converted into ultrasonic vibration, which is amplified by the horn 111 and transmitted to the mounting member 2, and the drill bit 3 is transmitted with ultrasonic vibration under the clamping of the mounting member 2; and the rotary driving member 12 drives the transducer housing 14 to rotate, thereby driving the ultrasonic transducer 11, the horn 111, the mounting member 2 and the drill bit 3 to rotate, thereby realizing the drilling work.

[0066] Further, such as Figure 2As shown, a side of the transducer housing 14 facing the rotary drive member 12 is provided with an avoidance groove 142 , and a power output shaft portion of the rotary drive member 12 is inserted into the avoidance groove 142 , thereby making the structure of the ultrasonic drill more compact.

[0067] like Figure 1 and Figure 2 As shown, the ultrasonic drill body 1 also includes a waterproof power plug 17, which is fixed on the outer wall of the mounting shell 13 and is conductively connected to the ultrasonic wireless transmitting unit 15. In actual application, the waterproof power plug 17 is connected to a power supply through a cable to provide power to the ultrasonic wireless transmitting unit 15. The ultrasonic drill with this structure can be detached from the cable when idle, which is convenient for storage. In addition, the waterproof power plug 17 is used as a connection terminal. Since it has waterproof performance, the safety performance of the ultrasonic drill is relatively high.

[0068] In this embodiment, the rotary drive member 12 includes a driving body 121 and a pneumatic motor (not shown in the figure), the pneumatic motor is arranged in the driving body 121, and the pneumatic motor has a power output shaft, that is, the ultrasonic drill is a pneumatic ultrasonic drill, which has the characteristics of high working efficiency and high drilling accuracy. In this embodiment, the pneumatic motor is used as a power source, and of course the power source can also be an electric motor, which is similar to the structure of a handheld drill in the prior art and will not be described in detail here.

[0069] like Figure 1 As shown, the driving body 121 includes a mounting portion 1211, a handle 1212 and a control button 1213. The handle 1212 is connected to the mounting portion 1211, the control button 1213 is arranged on the handle 1212, the pneumatic motor is arranged in the mounting portion 1211, and the control button 1213 is used to control the operation of the pneumatic motor. With this structure of the ultrasonic drill, the operator can hold the handle 1212 and realize the drilling work through the control button 1213, which is easy to operate.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An ultrasonic drill, characterized in that: The ultrasonic drill comprises an ultrasonic drill body (1), a mounting member (2) and a drill bit (3), wherein the ultrasonic drill body (1) comprises an ultrasonic transducer (11) and an horn (111) connected to each other, the mounting member (2) being fixed to the horn (111), one end of the drill bit (3) being fixed to the mounting member (2) and the other end extending away from the ultrasonic transducer (11), and in the length direction of the drill bit (3), the distance from one end of the drill bit (3) away from the ultrasonic transducer (11) to the end face of the mounting member (2) facing away from the ultrasonic transducer (11) is L mm, and the length of the horn (111) is T mm, wherein: When 5≤L≤40, L is negatively correlated with T; When 60≤L≤240, L is negatively correlated with T; When 260≤L≤300, L and T are positively correlated.

2. The ultrasonic drill according to claim 1, characterized in that: When 5≤L≤40, 40≤T≤58, and L is negatively correlated with T; When 60≤L≤240, 45≤T≤85, and L is negatively correlated with T; When 260≤L≤300, 48≤T≤60, and L and T are positively correlated.

3. The ultrasonic drill according to claim 1, characterized in that: The vibration frequency of the ultrasonic drill is 19KHz to 40KHz.

4. The ultrasonic drill according to claim 1, characterized in that: The end surface of the horn (111) facing away from the ultrasonic transducer (11) is provided with a mounting hole (100); The mounting member (2) is a collet, and the collet is detachably connected to the mounting hole (100).

5. The ultrasonic drill according to claim 4, characterized in that: The collet has an external thread connection portion (21), and the inner wall of the mounting hole (100) is provided with an internal thread connection portion, and the external thread connection portion (21) is meshed with the internal thread connection portion.

6. The ultrasonic drill according to claim 4, characterized in that: The outer peripheral wall of the collet has a frustum portion (22), and the axis of the frustum portion (22) coincides with the axis of the collet; The hole wall of the mounting hole (100) comprises a chamfered surface (1001), and the chamfered surface (1001) is connected to the end surface of the horn (111) facing away from the ultrasonic transducer (11); The side surface of the frustum portion (22) contacts the chamfered surface (1001) so that the collet clamps the drill bit (3).

7. The ultrasonic drill according to any one of claims 1 to 6, characterized in that: The ultrasonic drill body (1) further comprises a rotating drive member (12), a mounting shell (13), a transducer housing (14), an ultrasonic wireless transmitting unit (15) and an ultrasonic wireless receiving unit (16); The mounting shell (13) is fixed to the rotating driving member (12), and an opening is provided at one end of the mounting shell (13) away from the rotating driving member (12); The transducer housing (14) is rotatably connected to the mounting shell (13), and one end of the transducer housing (14) along its length direction is connected to the power output shaft of the rotating drive member (12), and the other end of the transducer housing (14) is provided with a mounting groove (141); The ultrasonic transducer (11) away from the mounting member (2) is fixedly arranged in the mounting groove (141), and the horn (111) extends from the mounting groove (141) to the outside of the groove, and extends to the outside of the mounting shell (13); The ultrasonic wireless transmitting unit (15) is fixed in the mounting shell (13) and arranged around the transducer housing (14); The ultrasonic wireless receiving unit (16) is fixed on the outer peripheral wall of the transducer housing (14) and arranged around the transducer housing (14), and the ultrasonic wireless transmitting unit (15) is arranged opposite to the ultrasonic wireless receiving unit (16).

8. The ultrasonic drill according to claim 7, characterized in that: The ultrasonic drill body (1) further comprises a waterproof power plug (17), wherein the waterproof power plug (17) is fixed on the outer wall of the mounting shell (13) and is conductively connected to the ultrasonic wireless transmitting unit (15).

9. The ultrasonic drill according to claim 7, characterized in that: The rotary drive member (12) comprises a driving body (121) and a pneumatic motor. The pneumatic motor is arranged in the driving body (121) and has the power output shaft.

10. The ultrasonic drill according to claim 9, characterized in that The driving body (121) comprises a mounting portion (1211), a handle (1212) and a control button (1213); the handle (1212) is connected to the mounting portion (1211); the control button (1213) is arranged on the handle (1212); the pneumatic motor is arranged in the mounting portion (1211); and the control button (1213) is used to control the operation of the pneumatic motor.

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