An ultrasonic spindle and its electrical connection structure

Abstract

The present invention relates to the field of precision machining technology, and discloses an ultrasonic spindle and an electrical connection structure thereof, wherein the electrical connection structure comprises: a pull rod; an electrical connector connected to the pull rod through an elastic member; a pull rivet connected to the pull rivet, and a mounting hole is provided at the rear end of the pull rivet; and a conductive connector installed in the mounting hole; wherein the electrical connector abuts against the conductive connector, so that the electrical connector is electrically connected to the conductive connector. The beneficial effects of the present invention are: it can reduce the difficulty of manufacturing and assembly, and can reduce the wear and damage of the conductive structure during the assembly of the ultrasonic tool handle and during operation, and ensure the stability and reliability of the electrical signal transmission between the ultrasonic power supply and the ultrasonic tool handle.

Description

Technical Field

[0001] The invention relates to the technical field of precision machining, and in particular to an ultrasonic spindle and an electrical connection structure thereof. Background Art

[0002] At present, in order to improve the cutting ability and thus improve the surface roughness and machining accuracy of the cutting surface and effectively extend the service life of the tool when processing hard and brittle materials, ultrasonic machine tools are now widely used, which introduce ultrasonic vibrations during the processing.

[0003] An ultrasonic machine tool usually includes an ultrasonic power supply and an ultrasonic spindle. The ultrasonic spindle includes a barrel seat, a rotating shaft and an ultrasonic tool handle. A sleeve hole is provided on the rotating shaft. The ultrasonic tool handle is assembled in the sleeve hole. During operation, the ultrasonic tool handle needs to be kept electrically connected to the ultrasonic power supply. In the prior art, an electrical connector and a conductive connector are usually provided on the rotating shaft and the ultrasonic tool handle respectively. The electrical connector includes a first conductive member and a second conductive member insulated from each other. The conductive connector includes a first conductive body and a second conductive body insulated from each other. The second conductive member is provided around the first conductive member and includes a sleeve portion thereon. When conducting electricity, the second conductive member is first sleeved on the outside of the second conductive body to achieve electrical connection. Then, the first conductive member is connected to the first conductive body by abutting.

[0004] However, the electrical connection structure of the above ultrasonic machine tool has the following disadvantages:

[0005] 1. Since the second conductive member is sleeve-connected with the second conductive body, vibration will be generated during the operation of the tool. Therefore, the manufacturing precision of the second conductive member and the second conductive body is extremely high to prevent unstable electrical connection during operation.

[0006] 2. The electrical connection is achieved by using a matching socket. When assembling the ultrasonic shank, the second conductive part and the second conductive body need to be aligned, which makes the assembly difficult. In addition, during operation, if vibration occurs, radial relative displacement between the electrical connector and the conductive connector occurs, which can easily cause the second conductive part and the second conductive body to be worn or damaged.

[0007] In summary, the electrical connection of existing ultrasonic machine tools has extremely high requirements for manufacturing precision and assembly. The assembly effect directly affects the stability and reliability of electrical conduction between the ultrasonic power supply and the ultrasonic tool holder. The conductive structure is prone to wear and damage during assembly and operation, and its service life is limited. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an ultrasonic spindle and an electrical connection structure thereof, which can reduce the difficulty of manufacturing and assembly, ensure that the electrical signal generated by the ultrasonic power supply is transmitted to the ultrasonic tool handle reliably and stably, and can reduce the wear on the conductive structure and extend the service life.

[0009] In order to achieve the above object, the present invention provides an electrical connection structure of an ultrasonic spindle in a first aspect, which comprises:

[0010] Pull rod;

[0011] An electrical connector connected to the pull rod via an elastic member;

[0012] A rivet connected to the rivet, wherein a mounting hole is formed at a rear end of the rivet;

[0013] A conductive connector installed in the assembly hole;

[0014] The electrical connector abuts against the conductive connector so that the electrical connector is electrically connected to the conductive connector.

[0015] As a preferred solution, the rear end of the rivet protrudes backwards from the rear end surface of the conductive connector.

[0016] As a preferred solution, the electrical connector includes an insulating seat and a first conductive member and a second conductive member connected to the insulating seat and insulated from each other, the front end of the first conductive member includes a first abutting portion, and the front end of the second conductive member includes a second abutting portion;

[0017] The conductive joint includes an insulator and a first conductive body and a second conductive body connected to the insulator and insulated from each other, the rear end of the first conductive body includes a first abutment position, and the rear end of the second conductive body includes a second abutment position;

[0018] The first abutting portion abuts against the first abutting position, and the second abutting portion abuts against the second abutting position.

[0019] As a preferred solution, the insulating seat is provided with a receiving groove with a front end opening, the first conductive member is installed in the receiving groove, the front end of the first conductive member is defined as the first abutment portion, the second conductive member is arranged around the outer periphery of the insulating seat, the front end of the second conductive member is defined as the second abutment portion, and the elastic member connects the second conductive member and the pull rod.

[0020] The insulator is provided with a first mounting groove and a second mounting groove, both of which are open toward the rear end. The second mounting groove is arranged around the outer circumference of the first mounting groove. The first conductor is arranged in the first mounting groove, and the rear end of the first conductor is defined as the first abutment position. The second conductor is arranged in the second mounting groove, and the rear end of the second conductor is defined as the second abutment position.

[0021] As a preferred solution, the front end of the first conductive member protrudes from the front end surface of the insulating seat to form the first abutting portion, the front end of the second conductive member protrudes from the front end surface of the insulating seat to form the second abutting portion, and an abutting groove is defined between the first abutting portion and the second abutting portion;

[0022] The portion of the insulator located between the first conductor and the second conductor protrudes from the rear end surfaces of the first conductor and the second conductor to form a pressing portion;

[0023] The abutting portion is inserted into the abutting groove and abuts against the insulating seat.

[0024] As a preferred solution, the second abutting portion gradually approaches the first conductive member from front to back.

[0025] As a preferred solution, the rear end surface of the first conductor is provided with a groove matched with the first abutting portion, and the inner side wall of the groove constitutes the first abutting position.

[0026] As a preferred solution, the groove is in a tapered shape with an outer diameter gradually increasing from front to back.

[0027] As a preferred solution, a slide groove penetrating through the inner wall of the groove is provided inside the first conductor, and an elastic contact is provided in the slide groove, and the elastic contact abuts against the first abutting portion.

[0028] As a preferred solution, the second abutting position is a first abutting surface defined on the rear end surface of the second conductor, and the front end surface of the second abutting portion has a second abutting surface that cooperates and abuts with the first abutting surface.

[0029] As a preferred solution, the first abutting surface is an inclined surface which gradually tilts forward from the inside to the outside.

[0030] As a preferred solution, the second mounting groove includes a first annular groove and a second annular groove extending outwardly along a front end edge of the first annular groove, and the contour shape of the second conductor matches the second mounting groove.

[0031] As a preferred solution, the insulating seat and the insulator are both made of rubber.

[0032] For the same purpose, a second aspect of the present invention provides an ultrasonic spindle, which includes the electrical connection structure as described in any one of the first aspects.

[0033] Compared with the prior art, the ultrasonic spindle and its electrical connection structure of the present invention have the following beneficial effects:

[0034] An electrical connector electrically connected to the wireless receiving component is provided on the pull rod, and a conductive connector electrically connected to the vibrator is provided on the pull pin of the ultrasonic knife handle. When the ultrasonic knife handle is assembled in the rotating shaft, electrical conduction can be achieved between the electrical connector and the conductive connector only by abutting against each other, thereby further transmitting the signal from the wireless receiving component to the vibrator, which can reduce the difficulty of manufacturing and assembly, and the radial displacement of the conductive connector and the electrical connector during operation will not cause any wear and damage to the conductive structure, which can effectively extend the service life; furthermore, the electrical connector and the pull rod are connected by an elastic member. Due to the elastic force of the elastic member, it can not only buffer the axial vibration and reduce the wear of the conductive structure caused by the axial displacement, but also during operation, the electrical connector can be kept in elastic contact with the conductive connector at all times to ensure the reliability and stability of electrical conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of an ultrasonic spindle in an embodiment of the present invention;

[0036] Figure 2 for Figure 1 A partial enlarged schematic diagram of the electrical connection structure;

[0037] Figure 3 for Figure 1 A partial schematic diagram of part B;

[0038] Figure 4 It is a schematic diagram of the structure of an ultrasonic spindle after the ultrasonic tool handle is disassembled in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of an ultrasonic tool handle in an embodiment of the present invention;

[0040] Figure 6 is a schematic structural diagram of a conductive structure in an embodiment of the present invention;

[0041] Figure 7 yes Figure 6 A partial schematic diagram of part A;

[0042] Figure 8 It is a partial schematic diagram of the electrical connector and the conductive connector being separated in the embodiment of the present invention.

[0043] In the figure, 1, cartridge seat; 11, receiving groove; 2, wireless transmitting component; 3, rotating shaft; 31, sleeve hole; 32, cavity; 33, knife back groove; 34, front section of rotating shaft; 35, rear section of rotating shaft; 4, wireless receiving component; 5, pull rod; 51, clamping claw seat; 52, mounting cavity; 53, limiting structure; 54, abutting platform; 6, clamping claw; 7, electrical connector; 71, insulating seat; 711, receiving groove; 72, first conductive member; 721, first abutting portion; 73, second conductive member; 731, second abutting portion; 7311, second abutting surface; 74, abutting groove; 75, convex ring; 8, elastic member; 9, bearing;

[0044] 100, ultrasonic knife handle; 10, knife handle body; 101, accommodating cavity; 102, mounting hole; 20, rivet; 201, wire groove; 202, assembly hole; 30, amplitude transformer; 301, tapered hole; 40, vibrator; 50, conductive joint; 501, insulator; 5011, first mounting groove; 5012, second mounting groove; 5012a, first annular groove; 5012b, second annular groove; 5013, abutting portion; 502, first conductor; 5021, first abutting position; 5022, slide groove; 5023, groove; 503, second conductor; 5031, second abutting position; 5032, first abutting surface; 504, elastic contact; 60, collet; 70, sealing nut; 80, tool;

[0045] 200. Conductive structure; 300. Conducting wire. DETAILED DESCRIPTION

[0046] The specific implementation of the present invention is further described in detail below 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.

[0047] The present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0048] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms or in the present invention can be understood according to specific circumstances.

[0049] It should also be noted that in the description of the present invention, the terms "front end" and "rear end" mean that when the ultrasonic machine tool is used for processing, the end close to the workpiece is the "front end" and the end away from the workpiece is the "rear end".

[0050] like Figure 1-Figure 8 As shown, an embodiment of the first aspect of the present invention provides an ultrasonic spindle, which includes a cartridge seat 1 , a rotating shaft 3 , a pull rod 5 , an electrical connector 7 and an ultrasonic tool handle 100 .

[0051] A wireless transmitting component 2 is provided in the cartridge base 1; a rotating shaft 3 is rotatably provided in the cartridge base 1, a wireless receiving component 4 cooperating with the wireless transmitting component 2 is provided on the rotating shaft 3, a sleeve hole 31 is provided at the front end of the rotating shaft 3, and a cavity 32 connected to the sleeve hole 31 is provided at the rear end of the rotating shaft 3; a pull rod 5 is provided in the cavity 32, and a clamping claw seat 51 is provided at the front end of the pull rod 5; a clamping claw 6 is installed on the clamping claw seat 51; an electrical connector 7 is connected to the pull rod 5 through an elastic member 8, and a wire 400 is connected between the electrical connector 7 and the wireless receiving component 4.

[0052] The ultrasonic knife handle 100 includes: a knife handle body 10, a rivet 20, a variable amplitude rod 30 and a vibrator 40. The knife handle body 10 is assembled in the sleeve hole 31. The rivet 20 is installed at the rear end of the knife handle body 10. The rear end of the rivet is provided with an assembly hole 202. The knife handle body 10 is connected to the clamping jaw 6 through the rivet 20 and rotates with the rotation of the rotating shaft 3. The front end of the knife handle body 10 is provided with a accommodating cavity 101. The rear end of the variable amplitude rod 30 is arranged in the accommodating cavity 101. The vibrator 40 is installed at the rear end of the variable amplitude rod 30; and a conductive connector 50 is installed in the assembly hole 202. A wire 400 is connected between the conductive connector 50 and the vibrator 40.

[0053] In this embodiment, the conductive structure 200 of the ultrasonic main shaft includes a conductive joint 50 and an electrical joint 7, and the conductive joint 50 abuts against the electrical joint 7 so that the electrical joint 7 is electrically connected to the conductive joint 50. In addition, in this embodiment, the electrical connection structure of the ultrasonic main shaft includes the conductive structure 200, the pull rod 5 and the elastic member 8.

[0054] Based on the above technical scheme, in this embodiment, a matching wireless transmitting component 2 and a wireless receiving component 4 are arranged on the cylinder seat 1 and the rotating shaft 3, and the ultrasonic electrical signal of the ultrasonic power supply can be stably transmitted to the rotating rotating shaft 3 in a non-contact manner, thereby ensuring the stable transmission of the electrical signal of the rotating shaft 3 during the rotation process; in addition, a matching electrical connector 7 and a conductive connector 50 are respectively arranged on the rotating shaft 3 and the ultrasonic knife handle 100, and the electrical connector 7 is electrically connected to the wireless receiving component 4 by a wire 400, and the conductive connector 50 is electrically connected to the vibrator 40. When the ultrasonic knife handle 100 is assembled on the rotating shaft 3, electrical conduction is achieved between the electrical connector 7 and the conductive connector 50 by abutting. Since there is no need to set a sleeve portion, the wear and damage of the conductive structure 200 during assembly and operation can be prevented, the service life can be effectively extended, and at the same time, the manufacturing difficulty and assembly difficulty can be reduced; furthermore, the electrical connector 7 is connected to the pull rod 5 through an elastic member 8. After the ultrasonic tool handle 100 is assembled on the rotating shaft, the elastic member 8 is in a compressed state, and the conductive connector 50 and the electrical connector 7 are electrically connected in the form of elastic abutment. During the operation of the tool, due to the elastic force of the elastic member 8, the electrical connector 7 and the conductive connector 50 can be kept in abutment at all times, thereby ensuring the reliability and stability of the electrical connection.

[0055] As an optional solution, in this embodiment, the conductive connector 50 can also be connected to the rivet 20 via an elastic member 8 .

[0056] Preferably, in this embodiment, the rear end of the pull nail 20 protrudes backward from the rear end surface of the conductive connector 50. For details, please refer to the attached Figure 3 As shown, the rear end of the rivet 20 is arranged around the conductive connector 50, which can protect the conductive connector 50 during transportation to prevent damage from bumps. During operation, the position where the conductive connector 50 and the sexual connector 7 are in contact can be protected to achieve dust and water resistance and ensure the stability of the electrical connection of the conductive structure 200.

[0057] In one embodiment of the present invention, preferably, Figure 6 , Figure 7 and Figure 8As shown, the electrical connector 7 includes an insulating seat 71 and a first conductive member 72 and a second conductive member 73 connected to the insulating seat 71 and insulated from each other. The front end of the first conductive member 72 includes a first abutting portion 721, and the front end of the second conductive member 73 includes a second abutting portion 731. The first conductive member 72 and the second conductive member 73 are respectively electrically connected to the wireless receiving component 4 through a wire 400; correspondingly, the conductive connector 50 needs to be compatible with the electrical connector 7. The conductive connector 50 includes an insulator 501 and a first conductive member 502 and a second conductive member 503 connected to the insulator 501 and insulated from each other. The rear end of the first conductive member 502 includes a first abutting position 5021, and the rear end of the second conductive member 503 includes a second abutting position 5031. The first conductive member 502 and the second conductive member 503 are respectively electrically connected to the vibrator 40 through a wire 400.

[0058] Specifically, in this embodiment, the first abutting portion 721 abuts against the first abutting position 5021, the second abutting portion 731 abuts against the second abutting position 5031, the first conductive member 72 and the first conductive body 502, as well as the second conductive member 73 and the second conductive body 503 are electrically connected in the form of abutment, and combined with the elastic effect of the elastic member 8, the stability of the electrical conduction between the electrical connector 7 and the conductive connector 50 can be ensured.

[0059] Specifically, in this embodiment, continue to refer to the attached Figure 6 , Figure 7 and Figure 8 The insulating seat 71 is provided with a receiving groove 711 with a front end opening, the first conductive member 72 is embedded in the receiving groove 711, the front end of the first conductive member 72 is exposed to the outside of the insulating seat 71 and is defined as a first abutment portion 721, the second conductive member 73 is arranged around the outer periphery of the insulating seat 71, the front end of the second conductive member 73 is defined as a second abutment portion 731, and the elastic member 8 connects the second conductive member 73 and the pull rod 5.

[0060] like Figure 6 As shown, in the conductive connector 50 of the present embodiment, a first mounting groove 5011 and a second mounting groove 5012 are provided on the insulator 501, both of which are open toward the rear end, the second mounting groove 5012 is arranged around the outer periphery of the first mounting groove 5011, the first conductor 502 is embedded in the first mounting groove 5011, the rear end of the first conductor 502 is exposed to the outside of the insulator 501 and is defined as a first abutment position 5021, and the second conductor 503 is embedded in the second mounting groove 5012, the rear end of the second conductor 503 is exposed to the outside of the insulator 501 and is defined as a second abutment position 5031.

[0061] In this embodiment, in order to facilitate the electrical connection between the first conductive member 72 connecting the wire 400 and the wireless receiving component 4, the accommodating groove 711 runs through the front and rear ends of the insulating seat 71, that is, the rear end of the first conductive member 72 is also exposed to the outside of the insulating seat 71.

[0062] Exemplarily, the second mounting groove 5012 includes a first annular groove 5012a and a second annular groove 5012b extending outwardly from the front end edge of the first annular groove 5012a, and the contour shape of the second conductor 503 matches the second mounting groove 5012 and is embedded therein.

[0063] In one embodiment of the present invention, the front end of the first conductive member 72 protrudes from the front end surface of the insulating seat 71 to form a first abutting portion 721, and the front end of the second conductive member 73 protrudes from the front end surface of the insulating seat 71 to form a second abutting portion 731. An abutting groove 74 is defined between the first abutting portion 721 and the second abutting portion 731.

[0064] Correspondingly, the portion of the insulator 501 located between the first conductor 502 and the second conductor 503 protrudes from the rear end surfaces of the first conductor 502 and the second conductor 503 to form a pressing portion 5013 .

[0065] Specific as Figure 7 As shown, when the electrical connector 7 abuts against the conductive connector 50, the abutting portion 5013 is inserted into the abutting groove 74 and abuts against the insulating seat 71, and elastic deformation occurs between the abutting portion 5013 and the insulating seat 71, thereby forming a sealing structure to isolate and seal the first conductive member 72 and the first conductive body 502, which can effectively prevent water and dust and ensure the stability and reliability of the electrical connection.

[0066] In this embodiment, the second abutting portion 731 gradually approaches the first conductive member 72 from front to back, that is, the second abutting portion 731 is flared, and the inner diameter gradually increases from back to front, thereby ensuring a certain elastic deformation space to further ensure the sealing effect.

[0067] In a preferred embodiment of the present invention, in order to ensure effective abutment between the first conductive member 72 and the first conductive body 502, the rear end face of the first conductive body 502 is provided with a groove 5023 that cooperates with the first abutment portion 721, and the inner side wall of the groove 5023 constitutes the first abutment position 5021; illustratively, the groove 5023 is a cone with an outer diameter gradually increasing from front to back, and the first abutment portion 721 is a matching cone.

[0068] As an alternative to this solution, the groove 5023 may also be set to other shapes, such as a square or other polygonal shape.

[0069] In this embodiment, in order to prevent a gap from being formed between the first abutting portion 721 and the inner side wall of the groove 5023 to avoid unstable electrical conduction, a slide groove 5022 is provided inside the first conductor 502 and penetrates the inner side wall of the groove 5023. An elastic contact 504 is provided in the slide groove 5022. The elastic contact 504 is elastically connected to the first conductor 502. When the electrical connector 7 is electrically connected to the conductive connector 50, the elastic contact 504 abuts against the first conductive member 72, which can ensure that the first conductive member 72 and the first conductive member 502 maintain contact during the operation of the tool. For details, please refer to the attached Figure 7 shown.

[0070] Similarly, in order to ensure that the second conductive member 73 and the second conductive body 503 are stably electrically connected, the second abutting position 5031 is a first abutting surface 5032 defined on the rear end face of the second conductive body 503, and a second abutting surface 7311 that cooperates with the first abutting surface 5032 is defined on the front end face of the second abutting portion 731, and the first abutting surface 5032 is an inclined surface that gradually tilts forward from the inside to the outside; from an overall perspective, the first abutting surface 5032 is a tapered surface with an outer diameter that gradually decreases from the front to the back, and the tapered surface cooperates with the abutment to play a certain guiding role and ensure the reliability of the abutment. Exemplarily, the first abutting surface 5032 can also be an arc surface, etc.

[0071] In a preferred embodiment of the present invention, the pull rod 5 is provided with an installation cavity 52 which runs through the front and rear ends thereof, and the electrical connector 7 is provided at the front end of the installation cavity 52; one end of the wire 400 connected to the electrical connector 7 is connected to the rear end of the electrical connector 7 and passes through the installation cavity 52, and the other end is connected to the wireless receiving component 4. For details, please refer to the attached Figure 1 shown.

[0072] Furthermore, in order to facilitate the installation of the elastic member 8, a limiting structure 53 and an abutment platform 54 are arranged in sequence from front to back along the inner wall of the installation cavity 52, and a convex ring 75 is provided on the outer periphery of the electrical connector 7. The front end face of the convex ring 75 cooperates and abuts with the rear end face of the limiting structure 53, one end of the elastic member 8 abuts against the rear end face of the convex ring 75, and the other end of the elastic member 8 abuts against the front end face of the abutment platform 54, as shown in Figure 2.

[0073] Exemplarily, in a preferred embodiment, the elastic member 8 is a spring, and the spring is sleeved on the outer circumference of the electrical connector 7 ; similarly, a plurality of elastic members 8 may be spaced apart along the outer circumference of the electrical connector 7 .

[0074] In a preferred embodiment of the present embodiment, a mounting hole 102 connected to the accommodating cavity 101 is provided at the rear end of the handle body 10, and the rivet 20 is installed in the mounting hole 102. A wire groove 201 connected to the assembly hole 202 is provided at the rear end of the rivet 20; one end of the wire 400 connected to the conductive connector 50 is connected to the front end of the conductive connector 50, and passes through the wire groove 201, the mounting hole 102 and the accommodating cavity 101 in sequence, and the other end is connected to the vibrator 40.

[0075] like Figure 1 As shown, in this embodiment, a knife retreat groove 33 is opened at the position connecting the cavity 32 and the sleeve hole 31 in the rotating shaft 3; before the ultrasonic knife handle 100 needs to be assembled, the knife-beating mechanism pushes the pull rod 5 to move the clamping jaw 6 into the knife retreat groove 33, and the clamping jaw 6 opens. When the ultrasonic knife handle 100 is assembled to the sleeve hole 31, the knife-beating mechanism pulls the pull rod 5 backward, so that the clamping jaw 6 clamps the rivet 20, and the ultrasonic knife handle 100 is assembled into the rotating shaft 3 and can rotate with the rotation of the rotating shaft 3.

[0076] In order to ensure assembly accuracy, in this embodiment, the sleeve hole 31 is in a tapered shape with the inner diameter gradually decreasing from front to back.

[0077] In this embodiment, a tapered hole 301 is provided at the front end of the horn 30, and the inner diameter of the tapered hole 301 gradually decreases from front to back. A collet 60 is installed in the tapered hole 301, and a tool 80 is installed in the collet 60. A sealing nut 70 connects the collet 60 and the horn 30, so that the tool 80 is installed on the horn 30. Figure 5 As an alternative solution for installing the cutter, the outer side surface of the front end of the horn 30 can be set as a conical surface, and the cutter can be directly matched and assembled on the conical surface.

[0078] In this embodiment, the insulating seat 71 and the insulator 501 are both rubber parts, which can ensure elastic deformation when abutting to achieve effective sealing.

[0079] Exemplarily, in order to ensure the conductive performance, the first conductive member 72 , the second conductive member 73 , the first conductive body 502 , and the second conductive body 503 are all made of copper.

[0080] In this embodiment, in order to ensure that the wireless receiving component 4 and the invalid transmitting component 2 can be installed in pairs to achieve better wireless transmission, the rotating shaft 3 includes a front shaft section 34 and a rear shaft section 35 connected from front to back, and the outer diameter of the front shaft section 34 is larger than the outer diameter of the rear shaft section 35, so that a step is defined at the connection between the front shaft section 34 and the rear shaft section 35; the wireless receiving component 4 is sleeved on the outside of the rear shaft section 35 and abuts against the step, so that axial positioning can be performed, and an annular accommodating groove 11 is opened on the cartridge seat 1 relative to the wireless transmitting component 2, and the wireless transmitting component 2 is arranged in the accommodating groove 11.

[0081] Furthermore, in this embodiment, in order to ensure stable rotation of the rotating shaft 3 , at least two bearings 9 are provided between the rotating shaft 3 and the cartridge seat 1 , and at least one bearing 9 is provided at the front end and the rear end of the rotating shaft 3 .

[0082] The embodiment of the second aspect of the present invention further proposes an ultrasonic machine tool, which includes an ultrasonic power supply and an ultrasonic spindle as in any embodiment of the first aspect, and the wireless transmitting component 2 is electrically connected to the ultrasonic power supply by a wire, and the specific structure is not shown in the drawings.

[0083] The ultrasonic machine tool in this embodiment includes the ultrasonic spindle as in the first aspect of the embodiment, and therefore has all the beneficial effects of the ultrasonic spindle, which will not be elaborated here.

[0084] In summary, the embodiments of the present invention provide an ultrasonic spindle and an ultrasonic machine tool including the same, wherein a wireless transmitting component and a wireless receiving component are respectively arranged on the cylinder seat and the rotating shaft, the wireless transmitting component is electrically connected to the ultrasonic power supply, and the ultrasonic electrical signal is transmitted to the rotating shaft in a non-contact manner, and an electrical connector electrically connected to the wireless receiving component is respectively arranged on the pull rod, and a conductive connector electrically connected to the vibrator is arranged on the pull pin of the ultrasonic tool handle. When the ultrasonic tool handle is assembled in the rotating shaft, the electrical connector and the conductive connector can be electrically connected only by abutting, so that the signal is further transmitted from the wireless receiving component to the vibrator, which can reduce the difficulty of manufacturing and assembly, and the radial displacement of the conductive connector and the electrical connector during operation will not cause any wear and damage to the conductive structure, which can effectively extend the service life; furthermore, the electrical connector and the pull rod are connected by an elastic member, due to the elastic force of the elastic member, not only can the axial vibration be buffered and the wear of the conductive structure caused by the axial displacement be reduced, but also during operation, the electrical connector can be kept elastically abutting against the conductive connector at all times to ensure the reliability and stability of the electrical conduction.

[0085] 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 principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. An electrical connection structure of an ultrasonic spindle, characterized in that: include: Tie rod; An electrical connector connected to the pull rod via an elastic member; A rivet connected to the rivet, wherein a mounting hole is formed at a rear end of the rivet; A conductive connector installed in the assembly hole; Wherein, the electrical connector abuts against the conductive connector, so that the electrical connector is electrically connected to the conductive connector; The electrical connector includes an insulating seat and a first conductive member and a second conductive member connected to the insulating seat and insulated from each other, the front end of the first conductive member includes a first abutting portion, and the front end of the second conductive member includes a second abutting portion; The conductive joint includes an insulator and a first conductive body and a second conductive body connected to the insulator and insulated from each other, the rear end of the first conductive body includes a first abutment position, and the rear end of the second conductive body includes a second abutment position; The first abutting portion abuts against the first abutting position, and the second abutting portion abuts against the second abutting position; The front end of the first conductive member is defined as the first abutment portion, the second conductive member is disposed around the outer periphery of the insulating seat, the front end of the second conductive member is defined as the second abutment portion, and the elastic member connects the second conductive member and the pull rod. The rear end of the first conductor is defined as the first abutment position, the second conductor is arranged around the outer circumference of the first conductor, and the rear end of the second conductor is defined as the second abutment position; The front end of the first conductive member protrudes from the front end surface of the insulating seat to form the first abutting portion, the front end of the second conductive member protrudes from the front end surface of the insulating seat to form the second abutting portion, and an abutting groove is defined between the first abutting portion and the second abutting portion; The portion of the insulator located between the first conductor and the second conductor protrudes from the rear end surfaces of the first conductor and the second conductor to form a pressing portion; The abutting portion is inserted into the abutting groove and abuts against the insulating seat.

2. The electrical connection structure of the ultrasonic spindle according to claim 1, characterized in that: The rear end of the pull nail protrudes backwards from the rear end surface of the conductive joint.

3. The electrical connection structure of the ultrasonic spindle according to claim 1, characterized in that: The second abutting portion gradually approaches the first conductive member from front to back.

4. The electrical connection structure of the ultrasonic spindle according to claim 1, characterized in that: A groove matching with the first abutting portion is disposed on the rear end surface of the first conductor, and an inner side wall of the groove constitutes the first abutting position.

5. The electrical connection structure of the ultrasonic main shaft according to claim 4, characterized in that: The groove is in a tapered shape with an outer diameter gradually increasing from front to back.

6. The electrical connection structure of the ultrasonic main shaft according to claim 4, characterized in that: A slide groove penetrating through the inner wall of the groove is provided inside the first conductor, and an elastic contact is arranged in the slide groove, and the elastic contact abuts against the first abutting portion.

7. The electrical connection structure of the ultrasonic spindle according to claim 1, characterized in that: The second abutting position is a first abutting surface defined on the rear end surface of the second conductor, and the front end surface of the second abutting portion has a second abutting surface that cooperates with and abuts against the first abutting surface.

8. The electrical connection structure of the ultrasonic main shaft according to claim 7, characterized in that: The first abutting surface is an inclined surface which gradually inclines forward from the inside to the outside.

9. The electrical connection structure of the ultrasonic spindle according to any one of claims 1 to 8, characterized in that: The insulating seat and the insulator are both made of rubber.

10. An ultrasonic spindle, characterized in that: An electrical connection structure comprising an ultrasonic main shaft as claimed in any one of claims 1 to 9.

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