CN210167537U

CN210167537U - Electric connection structure of ultrasonic main shaft

Info

Publication number: CN210167537U
Application number: CN201921448185.7U
Authority: CN
Inventors: 颜炳姜; 李伟秋
Original assignee: Conprofe Technology Group Co Ltd; Smartguy Intelligent Equipment Co Ltd Guangzhou Branch
Current assignee: Conprofe Technology Group Co Ltd; Smartguy Intelligent Equipment Co Ltd Guangzhou Branch
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-03-20
Anticipated expiration: 2029-08-29

Abstract

The utility model relates to the technical field of ultrasonic machining, and discloses an electric connection structure of an ultrasonic main shaft, which can enable the contact electric connection part of an ultrasonic tool handle and a rotating shaft to be positioned in the ultrasonic tool handle or the rotating shaft instead of being exposed at the gap between the ultrasonic tool handle and the rotating shaft by concentrating two conductive pieces in a rod body at the rear end of a blind rivet and concentrating two conductive bodies in the front end of a pull rod, thereby avoiding the electric leakage phenomenon and eliminating the potential safety hazard; meanwhile, because two conductive pieces are all concentrated on the same rod body, double alignment is converted into single alignment, the alignment difficulty is greatly reduced, and therefore, in the sleeving process of the ultrasonic knife handle and the rotating shaft, the rod body and the pull rod are only needed to be in butt joint, effective electric connection can be formed between the conductive pieces and the electric conductors, and further, stable electric conduction can be formed between the ultrasonic knife handle and the rotating shaft, and the situation of poor contact is avoided.

Description

Electric connection structure of ultrasonic main shaft

Technical Field

The utility model relates to an ultrasonic machining technical field especially relates to an electric connection structure of ultrasonic wave main shaft.

Background

The introduction of a high-frequency vibration machining mechanism during machining operation has been increasingly widely used because it can improve the surface roughness of the machined surface and improve the machining accuracy, and can also reduce the cutting resistance and increase the life of the tool.

The existing ultrasonic spindle generally comprises a seat body, a rotating shaft and an ultrasonic tool shank, wherein the rotating shaft is erected in the seat body, a trepan boring is arranged at the lower end of the rotating shaft, a power supply connector is arranged in the trepan boring, the power supply connector is provided with a first conductive element in a thick tubular shape, and a second conductive element in a thin tubular shape is arranged in the first conductive element in an insulating manner. The ultrasonic knife handle is externally provided with a conical inserting part for inserting and sleeving in the trepanning of the rotating shaft, the inside of the ultrasonic knife handle is provided with the oscillator, the upper end of the ultrasonic knife handle is provided with a power plug electrically connected with an oscillator circuit, the power plug is provided with a first electrode corresponding to the first conductive element, and the first electrode is internally provided with a second electrode corresponding to the second conductive element. When the ultrasonic knife handle is inserted into the sleeve hole of the rotating shaft, the first electrode of the power plug is sleeved on the outer ring surface of the first conductive element of the power connector, and then the second electrode is inserted into the second conductive element, so that the power connector is electrically connected with the power plug; the external power supply outputs current, and the current is transmitted to the oscillator of the ultrasonic knife handle through the power supply lead group, the power supply connector and the power supply plug so as to drive the ultrasonic knife handle to vibrate at high frequency.

The disadvantages of the above structure are:

1. when the inserting portion of the ultrasonic knife handle is not yet completely inserted and positioned in the hole of the rotating shaft, the ultrasonic knife handle and the rotating shaft still have positional deviation, and are opposite to each other, and the first and second electrodes of the power plug of the ultrasonic knife handle and the first and second conductive elements of the power connector are not yet precisely aligned, so that when the first and second electrodes of the power plug and the first and second conductive elements of the power connector are inserted in advance, the power plug or the power connector is easily damaged.

2. And because the second conductive element of the power connector and the second electrode of the power plug are both quite sharp, the second electrode of the power plug and the second conductive element of the power connector need to be aligned more accurately in the plugging process, and if the positions are slightly deviated, the second electrode or the second conductive element is easily damaged due to abrasion or bending.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric connection structure of an ultrasonic main shaft with stable electric conduction and high safety,

in order to achieve the above object, the present invention provides an electric connection structure of an ultrasonic main shaft, which includes:

a pull rod;

a first conductor provided at a front end of the pull rod;

a second conductor provided at the front end of the pull rod and insulated from the first conductor;

pulling nails;

the rod body is arranged at the rear end of the blind rivet;

the first conductive piece is arranged inside the rod body, one end of the first conductive piece is exposed out of the outer side wall of the rod body and is used for being in contact with the first conductive body to form electric connection;

and the second conductive piece is arranged in the rod body and is insulated from the first conductive piece, and one end of the second conductive piece is exposed out of the outer side wall of the rod body and is used for being in electric connection with the second conductive body after being contacted.

Preferably, a groove is formed at the front end of the pull rod, and the first conductor and the second conductor are arranged in the groove.

Preferably, an insulating ring is arranged in the groove, and the first conductor and the second conductor are arranged in the insulating ring.

Preferably, the front end of the pull rod protrudes forwards from the front end face of the insulating ring.

Preferably, a sealing ring is arranged in the ring opening of the insulating ring.

Preferably, the first conductor is provided with a first elastic contact for forming electrical connection after contacting with the first conductive piece;

the second conductor is provided with a second elastic contact which is used for forming electric connection after being contacted with the second conductive piece.

Preferably, the pull rod is provided with a first through hole, and the lead connected to the first conductor and the lead connected to the second conductor pass through the first through hole.

Preferably, the first hole passes through both ends of the pull rod.

Preferably, the blind rivet is provided with a second through hole, and the lead connected with the first conductive piece and the lead connected with the second conductive piece pass through the second through hole.

Preferably, the second hole passes through both ends of the blind rivet.

Preferably, the first conductive member is a conductive circular tube, and the second conductive member is a conductive circular tube.

Preferably, the rod body is provided with a through hole penetrating through both ends thereof.

As a preferred scheme, the pull stud further comprises a lantern ring, a flange is arranged on the outer side face, close to the front end of the pull stud, of the rod body, the lantern ring is sleeved outside the rod body and tightly presses the flange, a sinking groove is formed in the rear end of the pull stud, and the lantern ring is fixed in the sinking groove.

Preferably, the outer side surface of the lantern ring is provided with threads, and the lantern ring is fixedly connected with the blind rivet through the threads; or

The lantern ring is welded with the blind rivet.

Preferably, a sealing ring is arranged between the rod body and the lantern ring.

The embodiment of the utility model provides an electric connection structure of ultrasonic wave main shaft, compared with the prior art, its beneficial effect lies in:

the utility model provides an electric connection structure of ultrasonic wave main shaft through with first conductive piece and second conductive piece concentrate on the body of rod at blind rivet rear end in, and concentrate on the front end of pull rod with first electric conductor and second electric conductor, can make the contact electric junction of ultrasonic wave handle of a knife and rotation axis be located ultrasonic wave handle of a knife or rotation axis, rather than expose in the clearance department of ultrasonic wave handle of a knife and rotation axis, consequently can avoid the electric leakage phenomenon, eliminate the potential safety hazard; meanwhile, because two conductive pieces are all concentrated on the same rod body, double alignment between the two conductive pieces and two electric conductors is converted into single alignment between the rod body and the pull rod, so that the alignment difficulty is greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of an ultrasonic spindle according to an embodiment of the present invention;

FIG. 2 is a partial schematic view of region I of FIG. 1;

fig. 3 is a schematic structural diagram of an ultrasonic spindle without an ultrasonic processing assembly installed in the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an ultrasonic processing assembly according to an embodiment of the present invention.

In the figure: 1. a cartridge holder; 2. a rotating shaft; 201. a lumen; 202. trepanning; 203. a tool withdrawal cavity; 3. a pull rod; 301. a claw seat; 302. a first duct; 303. a groove; 4. a clamping jaw; 401. a claw arm; 5. a bearing; 6. a wireless transmitting component; 7. a wireless receiving component; 8. a first electrical conductor; 9. a second electrical conductor; 10. a cutter; 11. a knife handle body; 1101. mounting grooves; 1102. connecting grooves; 1103. a wire passing hole; 12. pulling nails; 1202. a second duct; 1203. sinking a groove; 13. an amplitude transformer; 1301. connecting holes; 14. a vibrator; 15. a collet; 16. a sealing nut; 17. a conductive component; 1701. a rod body; 1702. a first conductive member; 1703. a second conductive member; 1704. a collar; 1705. a second seal ring; 1706. a through hole; 18. an insulating ring; 19. a first seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Also, it should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, "on" in terms of "on the rotating shaft," on the horn, "" on the rod body, "and the like includes" inside, "" outside, "" upper portion, "lower portion," and the like. The terms "front end" and "rear end" refer to the end of the cutting tool that is closer to the work piece being machined as the "front end" and the end that is farther from the work piece being machined as the "rear end" when the cutting tool is in use.

As shown in fig. 1, an embodiment of the present invention provides an ultrasonic spindle, which mainly includes a cylinder base 1, a rotating shaft 2, a pull rod 3, a clamping jaw 4, and an ultrasonic machining assembly.

Specifically, as shown in fig. 1 to 3, the base 1 is a stationary member, and the rotating shaft 2 is inserted into the base 1 and connected to the base 1 through a bearing 5, so that the rotating shaft 2 can rotate relative to the base 1. The rotating shaft 2 is internally provided with a cavity 201, and the pull rod 3 is arranged in the cavity 201 and can slide up and down along the cavity 201. The front end of the pull rod 3 is provided with a claw seat 301, and the clamping jaw 4 is connected with the pull rod 3 through the claw seat 301 and can slide up and down along with the pull rod 3. The front end of the rotating shaft 2 is provided with a sleeve hole 202 communicated with the cavity 201, and a tool withdrawal cavity 203 is arranged between the sleeve hole 202 and the cavity 201. When the pull rod 3 slides downwards along the cavity channel 201, the clamping jaw 4 enters the tool withdrawal cavity 203 from the cavity channel 201 to open the jaw arm 401; when the pull rod 3 slides upwards along the cavity channel 201, the clamping jaw 4 enters the cavity channel 201 from the tool withdrawal cavity 203 to fold the clamping jaw arm 401.

Furthermore, a wireless transmitting assembly 6 is arranged in the cylinder seat 1, a wireless receiving assembly 7 is arranged on the rotating shaft 2, and the wireless receiving assembly 7 and the wireless transmitting assembly 6 are oppositely arranged at intervals; the front end of the pull rod 3 is provided with a first conductor 8 and a second conductor 9 which are insulated from each other, the first conductor 8 is electrically connected with the coil of the wireless receiving component 7 through a first lead, and the second conductor 9 is electrically connected with the coil of the wireless receiving component 7 through a second lead. Based on this, through being connected with the power, the coil of wireless transmission subassembly 6 can produce stable induction magnetic field, and along with rotation axis 2 is rotary motion relative to wireless transmission subassembly 6, the coil of wireless receiving subassembly 7 can produce induced current through cutting magnetic induction line, and like this, utilize the electromagnetic induction principle, has formed non-contact electric conduction between rotation axis 2 and the barrel base 1, and first electric conductor 8 and second electric conductor 9 are consequently electrified.

Specifically, as shown in fig. 1, 2 and 4, the ultrasonic machining assembly includes an ultrasonic tool holder and a tool 10, where the ultrasonic tool holder includes a tool holder body 11, a rivet 12, a horn 13 and a vibrator 14. The tool shank body 11 can be sleeved with the rotating shaft 2 through the sleeve hole 202 so as to rotate along with the rotation of the rotating shaft 2; the rear end of the tool holder body 11 is provided with a mounting groove 1101, and the blind rivet 12 is fixedly connected with the tool holder body 11 through the mounting groove 1101, wherein the connection mode can be splicing or screwing; the front end of the tool holder body 11 is provided with a connecting groove 1102, and the amplitude transformer 13 is fixedly connected with the tool holder body 11 through the connecting groove 1102, and similarly, the connecting mode can be splicing or screwing; the vibrator 14 is fixed at the rear end of the amplitude transformer 13; the front end of the amplitude transformer 13 is provided with a conical connecting hole 1301, and the cutter 10 is inserted into or screwed with the connecting hole 1301 through a collet 15 sleeved outside the cutter; to improve the stability of the connection between the tool 10 and the ultrasonic blade shank, the latter also includes a sealing nut 16, which sealing nut 16 is threaded onto the forward end of the horn 13 and compresses the collet 15. It should be noted that the cutting tool 10 may also be directly connected to the horn 13 through the connection hole 1301, or the front end of the horn 13 is not provided with the connection hole 1301 and is tapered, and the cutting tool 10 is provided with an assembly hole through which the cutting tool 10 is connected to the front end of the horn 13, and of course, the connection mode may be an insertion connection or a screw connection.

Further, the ultrasonic scalpel handle further comprises a conductive assembly 17, the conductive assembly 17 includes a rod body 1701, and a first conductive member 1702 and a second conductive member 1703 which are arranged on the rod body 1701 and insulated from each other, the rod body 1701 is arranged at the rear end of the rivet 12, the first conductive member 1702 is electrically connected with the first electrode of the vibrator 14 through a third wire, and the second conductive member 1703 is electrically connected with the second electrode of the vibrator 14 through a fourth wire.

It should be noted that in the present embodiment, the electrical connection structure of the ultrasonic spindle includes the pull rod 3, the first conductor 8, the second conductor 9, the pull nail 12, and the conductive component 17.

Based on the above structure, when the handle body 11 is sleeved with the rotating shaft 2, the rear end of the pull nail 12 extends into the cavity 201, meanwhile, the first conductive piece 1702 contacts with the first conductive body 8 and forms an electrical connection, and the second conductive piece 1703 contacts with the second conductive body 9 and forms an electrical connection, so that an electrical conduction is formed between the ultrasonic handle and the rotating shaft 2, and the current generated by cutting the magnetic induction wire by the coil of the wireless receiving assembly 7 can be transmitted to the vibrator 14, so that the vibrator generates high-frequency vibration, thereby improving the cutting operation effect of the cutter 10.

Compared with the prior art, on the one hand, the non-contact electrical conduction formed between the rotating shaft 2 and the cylinder seat 1 can not only avoid the abrasion of the conductive structure, prolong the service life of the main shaft, improve the cutting operation effect of high-frequency vibration, but also avoid the condition of instant open circuit caused by the deflection action of the rotating shaft 2, improve the stability of electrical conduction, ensure that the vibrator 14 can stably obtain working current, and also greatly improve the rotating speed of the rotating shaft 2, so that the rotating shaft meets the requirement of high rotating speed.

On the other hand, the ultrasonic spindle provided by the embodiment of the present invention can make the contact electrical connection between the ultrasonic tool handle and the rotating shaft 2 located in the ultrasonic tool handle or the rotating shaft 2 instead of being exposed in the gap between the ultrasonic tool handle and the rotating shaft 2 by arranging the conductive component 17 on the ultrasonic tool handle and concentrating the first conductive body 8 and the second conductive body 9 at the front end of the pull rod 3, so that the electric leakage phenomenon can be avoided and the potential safety hazard can be eliminated; meanwhile, as the two conductive pieces are concentrated on the same rod body 1701, the double alignment between the two conductive pieces and the two conductive bodies is converted into the single alignment between the rod body 1701 and the pull rod 3, which greatly reduces the alignment difficulty, therefore, in the sleeving process of the ultrasonic knife handle and the rotating shaft 2, the rod body 1701 and the pull rod 3 are only needed to be butted, the first conductive piece 1702 and the first conductive body 8, the second conductive piece 1703 and the second conductive body 9 can be effectively electrically connected, further, the ultrasonic knife handle and the rotating shaft 2 can be stably electrically conducted, and the condition of poor contact is avoided.

Further, when the tool shank body 11 is sleeved with the rotating shaft 2, two states exist between the clamping jaw 4 and the blind rivet 12, namely: in the connection state, as shown in fig. 1, the clamping jaw 4 is located in the cavity 201, and the jaw arm 401 of the clamping jaw 4 is folded to clamp the blind rivet 12, so as to ensure that the tool holder body 11 cannot be separated from the rotating shaft 2 during rotation; in the disengagement state, the clamping jaw 4 is positioned in the tool withdrawal cavity 203, and the jaw arm 401 of the clamping jaw 4 is opened and disengaged from the pull nail 12, so that the tool withdrawal operation is realized.

As shown in fig. 2, in order to improve the stability of the electrical connection between the conductive members, the first conductive member 8 is provided with a first elastic contact, the second conductive member 9 is provided with a second elastic contact, the first conductive member 1702 contacts with the first elastic contact to form an electrical connection, and the second conductive member 1703 contacts with the second elastic contact to form an electrical connection.

As shown in fig. 2, in order to form a good conductive environment, a groove 303 is provided at the front end of the pull rod 3, an insulating ring 18 is provided in the groove 303, the first conductor 8 and the second conductor 9 are provided in the insulating ring 18, and when the tool holder body 11 is fitted to the rotary shaft 2, the rear end of the rod body 1701 is inserted into the annular opening of the insulating ring 18. Preferably, the front end of the pull rod 3 protrudes forward beyond the front end surface of the insulating ring 18 to protect the insulating ring 18 from being damaged by impact. In addition, a first sealing ring 19 is arranged between the rod body 1701 and the insulating ring 18, and when the rear end of the rod body 1701 extends into the annular opening of the insulating ring 18, the first sealing ring 19 can clean water or impurities on the rod body 1701, so that the reliability of the electric connection between the electric conductor and the electric conduction piece is improved.

Further, as shown in fig. 1 and 3, the pull rod 3 is provided with a first hole 302 therethrough, and the first hole 302 is communicated with the groove 303, and the first lead and the second lead pass through the first hole 302. In order to optimize the arrangement of the first and second wires, a first tunnel 302 runs through both ends of the tie rod 3.

Similarly, as shown in fig. 1 and 4, the blind rivet 12 has a second bore 1202 therethrough, and the third and fourth wires pass through the second bore 1202. To optimize the placement of the third and fourth wires, a second bore 1202 extends through both ends of the blind rivet 12. In addition, the handle body 11 is further provided with a wire passing hole 1103 for communicating the connecting groove 1102 with the mounting groove 1101, and the third conducting wire and the fourth conducting wire pass through the wire passing hole 1103.

As shown in fig. 2, in this embodiment, the first conductive member 1702 and the second conductive member 1703 are both conductive circular tubes made of metal, the rod body 1701 is made of an insulating material, the first conductive member 1702 and the second conductive member 1703 are embedded inside the rod body 1701 by injection molding, one end of the first conductive member 1702 is exposed at the front end of the rod body 1701 and connected to a third conductive wire, the other end of the first conductive member 1702 is exposed at the outer side wall of the rod body 1701 and used for contacting with the first conductive body 8 to form an electrical connection, similarly, one end of the second conductive member 1703 is exposed at the front end of the rod body 1701 and connected to a fourth conductive wire, and the other end of the second conductive member 1703 is exposed at the outer side wall of the rod body 1701 and used for contacting with the second conductive body 9 to form an electrical connection. Therefore, the requirement for alignment between the conductive members and the conductive bodies is low, and the first conductive member 1702 and the second conductive member 1703 are not easily worn or bent in the process that the rod body 1701 extends into the groove 303, so that the service life of the ultrasonic main shaft can be effectively prolonged, and the stability of electrical conduction is ensured.

Further, as shown in fig. 2, the conductive member 17 in this embodiment further includes a ring 1704, a flange is disposed on an outer side surface of the rod body 1701 near the front end thereof, the ring 1704 is sleeved on the outer side of the rod body 1701 and presses against the flange, a sinking groove 1203 is disposed at the rear end of the rivet 12, and the ring 1704 is fixed in the sinking groove 1203. In order to prevent the first conductive member 1702 and the second conductive member 1703 from being damaged by water, steam and other impurities, and to prevent the leakage phenomenon, two second sealing rings 1705 are disposed between the rod body 1701 and the collar 1704, in this embodiment, the two second sealing rings 1705 are disposed, and the two second sealing rings 1705 are disposed on two sides of the flange respectively.

Illustratively, the collar 1704 and the pull stud 12 may be connected in a variety of ways, for example, the collar 1704 may be threaded on its outside and the collar 1704 may be fixedly connected to the pull stud 12 via threads, or the collar 1704 may be welded directly to the pull stud 12.

Optionally, as shown in fig. 1 to 2, the rod 1701 has a through hole 1706 penetrating through two ends of the rod, the through hole 1706 is communicated with the second hole 1202 of the rivet 12, and when the handle body 11 is sleeved with the rotating shaft 2, the through hole 1706 is also communicated with the first hole 302 of the pull rod 3. Therefore, the cooling device can be installed on the ultrasonic spindle, and in the cutting operation process, the cooling device can reduce the heat of the oscillator 14 and the cutter 10, improve the working condition of the oscillator and the cutter and improve the processing quality by injecting the cooling medium into the communicated first pore channel 302, the through hole 1706 and the second pore channel 1202.

To sum up, the embodiment of the utility model provides an electric connection structure of ultrasonic wave main shaft, including pull rod 3, first electric conductor 8, second electric conductor 9, blind rivet 12 and conductive component 17, compare with prior art, this electric connection structure of ultrasonic wave main shaft has the electrical property and switches on stably, advantage such as security height.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An electric connection structure of an ultrasonic spindle, comprising:

a pull rod;

a first conductor provided at a front end of the pull rod;

pulling nails;

the rod body is arranged at the rear end of the blind rivet;

2. The ultrasonic spindle electrical connection structure according to claim 1, wherein a groove is formed at a front end of the tie bar, and the first conductor and the second conductor are disposed in the groove.

3. The ultrasonic spindle electrical connection structure of claim 2, wherein an insulating ring is disposed in the groove, and the first conductor and the second conductor are disposed in the insulating ring.

4. The electrical connection structure for an ultrasonic spindle according to claim 3, wherein a front end of the tie bar projects forward from a front end surface of the insulating ring.

5. The electrical connection structure for an ultrasonic spindle according to claim 3, wherein a seal ring is provided in a ring opening of the insulating ring.

6. The ultrasonic spindle electrical connection structure of claim 1, wherein the first conductor is provided with a first elastic contact for making electrical connection after contacting with the first conductive member;

7. The structure of claim 1, wherein the tie bar has a first through hole, and the lead wire connected to the first conductor and the lead wire connected to the second conductor pass through the first through hole.

8. The electrical connection structure for an ultrasonic spindle according to claim 7, wherein the first hole extends through both ends of the tie rod.

9. The structure of claim 1, wherein the rivet has a second through hole, and the lead wire connected to the first conductive member and the lead wire connected to the second conductive member pass through the second through hole.

10. The electrical connection structure for an ultrasonic spindle according to claim 9, wherein the second hole passes through both ends of the blind rivet.

11. The ultrasonic spindle electrical connection structure of claim 1, wherein the first conductive member is a conductive circular tube, and the second conductive member is a conductive circular tube.

12. The ultrasonic spindle electrical connection structure according to claim 1, wherein the rod body is provided with a through hole penetrating through both ends thereof.

13. The electric connection structure of an ultrasonic main shaft according to claim 1, further comprising a collar, wherein a flange is arranged on an outer side surface of the shaft body near the front end of the shaft body, the collar is sleeved outside the shaft body and tightly presses the flange, a sinking groove is arranged at the rear end of the blind rivet, and the collar is fixed in the sinking groove.

14. The electrical connection structure of an ultrasonic spindle according to claim 13, wherein the outer side surface of the collar is provided with a thread, and the collar is fixedly connected with the blind rivet through the thread; or

The lantern ring is welded with the blind rivet.

15. An electrical connection structure for an ultrasonic spindle according to claim 13, wherein a sealing ring is provided between the rod body and the collar.