Ultrasonic spindle and ultrasonic machine tool including the same

Abstract

The present invention discloses an ultrasonic spindle and an ultrasonic machine tool including the same. The ultrasonic spindle is provided with a conductance head at the front end of a push rod and a conductive adapter in a detachable sleeve. Thus, when the conductive adapter needs to be repaired or replaced, only the sleeve needs to be disassembled, and the conductive adapter can be repaired or replaced separately, and then the sleeve can be installed on the push rod. This is not only simple and convenient to operate, but also, since the wire is connected to the conductance head, it is not affected by the wire, and repeated disassembly and assembly can be achieved, thereby effectively reducing the maintenance cost of the ultrasonic spindle. At the same time, the ultrasonic spindle is provided with an electrical connector at the rear end of the tool holder body and a conductive adapter in the sleeve, so that the contact electrical connection between the ultrasonic tool holder and the rotating shaft is located inside the ultrasonic tool holder or the rotating shaft, rather than being exposed at the gap between the ultrasonic tool holder and the rotating shaft. Thereby, the phenomenon of electric leakage can be avoided and potential safety hazards can be eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic processing, and in particular to an ultrasonic spindle and an ultrasonic machine tool including the same. Background Art

[0002] Introducing a high-frequency vibration processing mechanism during the processing operation can not only improve the surface roughness of the cutting surface and the machining accuracy, but also reduce the cutting resistance and increase the tool life, so it has been gradually widely used.

[0003] The existing ultrasonic spindle usually consists of a housing, a rotating shaft, and an ultrasonic tool holder. The rotating shaft is mounted in the housing and has a socket hole at the lower end. A power connector is provided in the socket hole, and the conductive ring plate of the power connector is electrically connected to an external power supply through a wire; the ultrasonic tool holder is provided with a socket part corresponding to the socket hole, and a power plug is provided on the socket part. The conductive insertion piece of the power plug is electrically connected to the oscillator inside the ultrasonic tool holder through a wire. When the ultrasonic tool holder is installed on the rotating shaft, the socket part is engaged with the socket hole, and the power plug is inserted into the power connector. In this way, the conductive ring plate is electrically connected to the conductive insertion piece, and the external power supply outputs current, which is conducted to the oscillator through the conductive ring plate and the conductive insertion piece to drive the tool assembled on the ultrasonic tool holder to vibrate at a high frequency. However, the above structure has the following disadvantages:

[0004] 1. The power connector is located inside the socket hole, making it difficult to disassemble and assemble, and not convenient for maintenance and replacement;

[0005] 2. The wire connecting the external power supply is fixedly connected to the conductive ring plate of the power connector, resulting in that when the power connector is disassembled, the wire can only be torn off, and repeated disassembly and assembly cannot be achieved;

[0006] 3. The conductive ring plate and the conductive insertion piece are electrically connected in a straight sleeve form, with a large alignment difficulty and a high alignment accuracy requirement;

[0007] 4. The shapes of the conductive ring plate and the conductive insertion piece are quite thin. During the insertion process of the power plug and the power connector, the two must be aligned more precisely. If the position deviates slightly, the conductive ring plate or the conductive insertion piece is extremely easy to be damaged due to abrasion or bending. Summary of the Invention

[0008] The object of the present invention is to provide an ultrasonic spindle and an ultrasonic machine tool including the same that are easy to maintain, convenient to disassemble and assemble, have stable electrical conduction, high safety, and good processing effects.

[0009] To achieve the above object, the present invention provides an ultrasonic spindle, which includes:

[0010] A rotating shaft, a cavity is provided inside the rotating shaft, and a socket hole communicating with the cavity is provided at the front end of the rotating shaft;

[0011] A push rod is arranged in the cavity and can slide along the cavity. A conductance head is arranged at the front end of the push rod. The conductance head includes a first conductor and a second conductor that are insulated from each other.

[0012] A sleeve body is detachably connected to the front end of the push rod and can slide along with the push rod. The sleeve body is provided with a through hole penetrating through its front and rear ends. A conductive adapter is arranged in the through hole. The conductive adapter includes a column body and a first conductive medium and a second conductive medium arranged on the column body. The first conductive medium is electrically connected to the first conductor, and the second conductive medium is electrically connected to the second conductor.

[0013] An ultrasonic tool shank, which includes a tool shank body, a horn, an oscillator, and an electrical connector. The rear end of the tool shank body can be connected to the rotating shaft through the sleeve hole. An installation groove is arranged at the front end of the tool shank body. The horn is connected to the tool shank body through the installation groove. The oscillator is arranged on the horn. The electrical connector includes a rod body and a first conductive part and a second conductive part that are insulated from each other and arranged on the rod body. The rod body is vertically arranged on the tool shank body. The first conductive part is electrically connected to the first electrode of the oscillator through a first wire, and the second conductive part is electrically connected to the second electrode of the oscillator through a second wire.

[0014] As a preferred solution, the second conductor is arranged inside the first conductor, and the two are connected as a whole through an insulator. A first connection part is arranged at the front end of the first conductor, and a second connection part is arranged at the front end of the second conductor. The first connection part is annular and surrounds the periphery of the second connection part.

[0015] As a preferred solution, both the first conductive medium and the second conductive medium are partially embedded inside the column body. The first conductive medium is provided with a first connection position exposed at the rear end of the column body, and the second conductive medium is provided with a second connection position exposed at the rear end of the column body. The first connection position is annular and surrounds the periphery of the second connection position. The first connection part is connected to the first connection position, and the second connection part is connected to the second connection position.

[0016] As a preferred solution, the first connection part is inserted into the ring opening of the first connection position; or

[0017] The first connection position is inserted into the ring opening of the first connection part.

[0018] As a preferred solution, the second connection part is provided with a socket, and the second connection position is columnar and inserted into the socket; or

[0019] The second connection position is provided with a socket, and the second connection part is columnar and inserted into the socket.

[0020] As a preferred solution, a groove is provided at the front end of the push rod, and mounting threads are provided on the groove wall of the groove. The conductance head is screwed to the groove wall of the groove through the mounting threads.

[0021] As a preferred solution, first connection threads are provided on the hole wall of the through hole, and the front end of the push rod is screwed to the hole wall of the through hole through the first connection threads.

[0022] As a preferred solution, a sealing ring is provided between the push rod and the through hole.

[0023] As a preferred solution, second connection threads are provided on the hole wall of the through hole, and the conductive adapter is screwed to the hole wall of the through hole through the second connection threads.

[0024] As a preferred solution, both the first conductive medium and the second conductive medium are partially embedded inside the column body. A slot for inserting the rod body is provided at the front end of the column body. The first conductive medium is provided with a first contact part exposed on the slot wall of the slot, and the second conductive medium is provided with a second contact part exposed on the slot wall of the slot.

[0025] As a preferred solution, a sealing ring is provided at a position near the slot opening inside the slot.

[0026] As a preferred solution, both the first conductive part and the second conductive part are partially embedded inside the rod body. The first conductive part is provided with a first contact position exposed on the outer wall of the rod body for forming an electrical connection after contacting the first contact part. The second conductive part is provided with a second contact position exposed on the outer wall of the rod body for forming an electrical connection after contacting the second contact part.

[0027] As a preferred solution, both the first conductive part and the second conductive part are embedded inside the rod body. The first conductive part is provided with a first wiring position exposed at the front end of the rod body, and the first wire is connected to the first wiring position. The second conductive part is provided with a second wiring position exposed at the front end of the rod body, and the second wire is connected to the second wiring position.

[0028] As a preferred solution, a pull claw is further included. The pull claw is sleeved outside the sleeve body, and a limiting boss for restricting the sliding of the pull claw is provided on the cavity wall of the cavity. A claw hook is provided at the front end of the pull claw. A connection groove is provided at the rear end of the tool handle body, and a flange is provided on the groove wall of the connection groove. The claw hook is hooked or disengaged from the flange, and the rod body is erected inside the connection groove.

[0029] As a preferred solution, an expansion protrusion for expanding the pulling claws is provided on the outer wall of the sleeve body near its front end.

[0030] As a preferred solution, an elastic member is hoop-mounted on the outside of the pulling claws.

[0031] As a preferred solution, a counterbore is provided at the bottom of the connection groove, and the front end of the rod body is fixed in the counterbore.

[0032] As a preferred solution, a collar is sleeved on the front end of the rod body, and the collar is screwed or welded to the counterbore.

[0033] As a preferred solution, a sealing ring is provided between the collar and the rod body.

[0034] As a preferred solution, the oscillator is arranged in the installation groove, a communication hole is provided between the counterbore and the installation groove, the first wire passes through the communication hole and is electrically connected to the first conductive member, and the second wire passes through the communication hole and is electrically connected to the second conductive member.

[0035] As a preferred solution, it further includes a cylinder base. The rotating shaft is rotatably inserted into the interior of the cylinder base. A wireless transmission component is provided inside the cylinder base. A wireless reception component is provided on the rotating shaft and is arranged opposite to the wireless transmission component at an interval. The first conductor is electrically connected to the coil of the wireless reception component through a first wire, and the second conductor is electrically connected to the coil of the wireless reception component through a second wire.

[0036] As a preferred solution, the cylinder base includes a main housing and a rear end cover provided at the rear end of the main housing. The rotating shaft is rotatably inserted into the interior of the main housing. The wireless reception component is arranged at the rear end of the rotating shaft, and the wireless transmission component is arranged inside the rear end cover.

[0037] As a preferred solution, it further includes an encoder gear. The encoder gear is arranged at the rear end of the rotating shaft, and the wireless reception component is arranged on the encoder gear.

[0038] As a preferred solution, a first wiring portion is provided at the rear end of the first conductor, the first wire is connected to the first wiring portion, a second wiring portion is provided at the rear end of the second conductor, and the second wire is connected to the second wiring portion.

[0039] As a preferred solution, the push rod is provided with a through hole, and the first wire and the second wire pass through the through hole.

[0040] Another object of the present invention is to provide an ultrasonic machine tool, which includes the above-mentioned ultrasonic spindle.

[0041] An embodiment of the present invention provides an ultrasonic spindle. Compared with the prior art, its beneficial effects are as follows:

[0042] In the first aspect, the ultrasonic spindle provided by the present invention is provided with a conductance head at the front end of the push rod and a conductive adapter within a detachable sleeve. Among them, the conductance head is hidden inside the push rod or between the push rod and the sleeve, so there is no risk of damage and no need for inspection and replacement. For the conductive adapter, although it has a higher risk of damage than the conductance head, when the conductive adapter needs to be inspected or replaced, only the sleeve needs to be disassembled, and the conductive adapter is separately inspected or replaced, and then the sleeve is installed on the push rod. This is not only simple and convenient to operate, but also because the wire is connected to the conductance head, it is not affected by the wire, and repeated disassembly and assembly can be achieved, thereby effectively reducing the maintenance cost of the ultrasonic spindle;

[0043] In the second aspect, the ultrasonic spindle provided by the present invention is provided with an electrical connector at the rear end of the tool holder body and a conductive adapter within the sleeve, so that the contact electrical connection between the ultrasonic tool holder and the rotating shaft is located inside the ultrasonic tool holder or the rotating shaft, rather than being exposed at the gap between the ultrasonic tool holder and the rotating shaft. Thereby, the phenomenon of electric leakage can be avoided and potential safety hazards can be eliminated;

[0044] In the third aspect, since the conductive adapter concentrates two conductive media on one column, and the electrical connector concentrates two conductive parts on one rod, thus, the double alignment between the two conductive media and the two conductive parts is transformed into a single alignment between the column and the rod, greatly reducing the alignment difficulty. In this way, during the connection process between the ultrasonic tool holder and the rotating shaft, an effective electrical connection can be very smoothly formed between the conductive adapter and the electrical connector, and the electrical conduction is stable, which can improve the cutting operation effect of the high-frequency vibration of the ultrasonic spindle;

[0045] In the fourth aspect, thanks to the support of the column, the conductive medium is not easily worn or bent when forming an electrical connection with the conductive part. Similarly, thanks to the support of the rod, the conductive part is not easily worn or bent when forming an electrical connection with the conductive medium. Therefore, a stable electrical conduction can be formed between the conductive adapter and the electrical connector, and there will be no situation of poor contact, and the service life of the ultrasonic spindle can be effectively extended.

[0046] In addition, the present invention also provides an ultrasonic machine tool. Since it adopts the above-mentioned ultrasonic spindle, it also has the advantages of stable electrical conduction and good processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic structural diagram of the rear part of the ultrasonic spindle according to Embodiment 1 of the present invention;

[0048] Figure 2 It is a schematic structural diagram of the front end part of the ultrasonic spindle in the first embodiment of the present invention;

[0049] Figure 3 is Figure 2 a partial schematic diagram of area I in

[0050] Figure 4 It is a schematic structural diagram of the front end part of the ultrasonic spindle without the ultrasonic processing component installed in the first embodiment of the present invention;

[0051] Figure 5 is Figure 4 a partial schematic diagram of area II in

[0052] Figure 6 It is a schematic structural diagram of the conductance head in the first embodiment of the present invention;

[0053] Figure 7 It is a schematic structural diagram of the sleeve body and the conductive adapter in the first embodiment of the present invention;

[0054] Figure 8 It is a schematic structural diagram of the ultrasonic processing component in the first embodiment of the present invention;

[0055] Figure 9 is Figure 8 a partial schematic diagram of area III in

[0056] Figure 10 It is a schematic structural diagram of the ultrasonic machine tool in the second embodiment of the present invention.

[0057] In the figure: 1000, ultrasonic spindle; 1, cylinder base; 101, main housing; 102, front end cover; 103, rear end cover; 2, rotating shaft; 201, sleeve hole; 202, limiting boss; 3, push rod; 301, hole passage; 4, sleeve body; 401, through hole; 402, expansion bulge; 403, first connection thread; 5, claw; 501, claw hook; 6, front bearing; 7, rear bearing; 8, wireless transmitting component; 9, wireless receiving component; 10, conductivity head; 10a, first conductor; 10b, second conductor; 10c, insulator; 1001, first connection part; 1002, second connection part; 1003, socket; 1004, first wiring part; 1005, second wiring part; 11, first electric wire; 12, second electric wire; 13, conductive adapter; 13a, cylinder; 13b, first conductive medium; 13c, second conductive medium; 1301, first connection position; 1302, second connection position; 1303, slot; 1304, first contact part; 1305, second contact part; 1306, fixing part; 14, sealing ring; 15, tool; 16, tool holder body; 1601, mounting groove; 1602, connection groove; 1603, flange; 1604, counterbore; 1605, communication hole; 17, horn; 18, oscillator; 19, electrical connector; 19a, rod body; 19b, first conductive member; 19c, second conductive member; 1901, first contact position; 1902, second contact position; 1903, first wiring position; 1904, second wiring position; 20, first wire; 21, second wire; 22, collar; 23, elastic member; 24, encoder gear; 2000, ultrasonic power supply. Detailed implementation manner

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0059] It should be understood that in the present invention, terms such as "first" and "second" are used 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 can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0060] In addition, it should be noted that in the description of the present invention, the term "upper" includes "inside", "outside", "upper part", "lower part", etc. The terms "front end" and "rear end" mean that when the tool is in use, the end close to the workpiece is the "front end" and the end away from the workpiece is the "rear end".

[0061] Embodiment 1

[0062] like Figures 1 to 3 As shown, an embodiment of the present invention provides an ultrasonic spindle 1000, which mainly includes a cartridge seat 1, a rotating shaft 2, a push rod 3, a sleeve body 4, a pulling claw 5 and an ultrasonic machining component.

[0063] like Figures 1 to 5 As shown, the cartridge seat 1 is a stationary part, and the rotating shaft 2 is rotatably arranged in the cartridge seat 1; a cavity is arranged inside the rotating shaft 2, and the push rod 3 is arranged in the cavity and can slide along the cavity, and the front end of the rotating shaft 2 is provided with a sleeve hole 201 connected with the cavity; the sleeve body 4 is provided with a through hole 401 passing through its front and rear ends, and the hole wall of the through hole 401 is provided with a first connecting thread 403, and the front end of the push rod 3 is screwed with the hole wall of the through hole 4 through the first connecting thread, so that the sleeve body 4 can not only slide with the push rod 3, but also be easy to disassemble; the pull claw 5 is sleeved on the outside of the sleeve body 4, and a limiting boss 202 for limiting the sliding of the pull claw 5 is provided on the wall of the cavity, and an expansion protrusion 402 is provided on the outer wall of the sleeve body 4 near its front end, and an elastic member 23 is provided on the outside of the pull claw 5, and the elastic member 23 is preferably a spring. When the sleeve 4 follows the push rod 3 to slide along the cavity toward the rear end of the ultrasonic main shaft 1000, the expansion protrusion 402 opens the claw 5; and when the sleeve 4 follows the push rod 3 to slide along the cavity toward the front end of the ultrasonic main shaft 1000, the expansion protrusion 402 leaves the claw 5 and the claw 5 is retracted.

[0064] Furthermore, if Figures 1 to 3 As shown, the cartridge seat 1 includes a main shell 101, a front end cover 102 and a rear end cover 103; the main shell 101 is cylindrical, the rotating shaft 2 is passed through the main shell 101, and openings are provided at both the front and rear ends of the main shell 101, wherein the front end opening is provided with a front bearing seat sleeved outside the rotating shaft 2, the front bearing seat and the rotating shaft 2 are connected via a front bearing 6, and the rear end opening is provided with a rear bearing seat sleeved outside the rotating shaft 2, the rear bearing seat and the rotating shaft 2 are connected via a rear bearing 7, so that the rotating shaft 2 can achieve stable rotation; the front end cover 102 is installed on the front bearing seat, and the rear end cover 103 is installed on the rear bearing seat.

[0065] Furthermore, if Figures 1 to 5As shown, a wireless transmission component 8 is provided inside the cylinder base 1, which is arranged inside the rear end cover 103. A wireless reception component 9 is provided on the rotating shaft 2, and the wireless reception component 9 and the wireless transmission component 8 are arranged opposite to each other at an interval. A conductance head 10 is provided at the front end of the push rod 3. The conductance head 10 includes a first conductor 10a and a second conductor 10b that are insulated from each other. The first conductor 10a is electrically connected to the coil of the wireless reception component 9 through a first wire 11, and the second conductor 10b is electrically connected to the coil of the wireless reception component 9 through a second wire 12. A conductive adapter 13 is provided in the through hole 401 of the sleeve 4. The conductive adapter 13 includes a cylinder 13a and a first conductive medium 13b and a second conductive medium 13c provided on the cylinder 13a. The rear end of the cylinder 13a abuts against the front end of the push rod 3. The first conductive medium 13b is in contact with the first conductor 10a to form an electrical connection, and the second conductive medium 13c is in contact with the second conductor 10b to form an electrical connection. Based on this, since the conductance head 10 is hidden inside the push rod 3 or between the push rod 3 and the sleeve 4, there is no risk of damage, and there is no need for maintenance and replacement. For the conductive adapter 13, although it has a higher risk of damage than the conductance head 10, when the conductive adapter 13 needs to be maintained or replaced, only the sleeve 4 needs to be disassembled, and the conductive adapter 13 is separately maintained or replaced, and then the sleeve 4 is installed on the push rod 3. This is not only simple and convenient to operate, but also since the wire is connected to the conductance head 10, it is not affected by the wire, and repeated disassembly and assembly can be achieved, thereby effectively reducing the maintenance cost of the ultrasonic spindle 1000.

[0066] Based on the above structure, by being electrically connected to a power source, the coil of the wireless transmission component 8 can generate a stable induced magnetic field. As the rotating shaft 2 rotates relative to the wireless transmission component 8, the coil of the wireless reception component 9 can generate an induced current by cutting the magnetic induction line. That is, using the principle of electromagnetic induction, a non-contact electrical conduction is formed between the rotating shaft 2 and the cylinder base 1. Through the electrical conduction of the first conductor 10a and the second conductor 10b, the first conductive medium 13b and the second conductive medium 13c are thus charged.

[0067] Compared with the prior art, the non-contact electrical conduction can not only reduce wear, extend the service life of the ultrasonic spindle 1000, improve the cutting operation effect of high-frequency vibration, but also avoid the situation of instantaneous open circuit caused by the yaw movement of the rotating shaft 2, improve the stability of electrical conduction, and ensure that the vibrator 18 can stably obtain the working current. In addition, the non-contact electrical conduction can also greatly increase the rotation speed of the rotating shaft 2 to meet the requirements of high rotation speed.

[0068] Further, as Figures 3 to 7As shown, both the first conductor 10a and the second conductor 10b of the conductance head 10 are made of metal. The second conductor 10b is disposed inside the first conductor 10a, and the two are connected as a whole through an insulator 10c. The insulator 10c is preferably insulating plastic. A first connection portion 1001 is provided at the front end of the first conductor 10a, and a second connection portion 1002 is provided at the front end of the second conductor 10b. The first connection portion 1001 is annular and surrounds the periphery of the second connection portion 1002. Correspondingly, both the first conductive medium 13b and the second conductive medium 13c of the conductive adapter 13 are made of metal, and the column 13a is preferably insulating plastic. The first conductive medium 13b and the second conductive medium 13c are partially embedded inside it by injection molding. Moreover, the first conductive medium 13b has a first connection position 1301 exposed at the rear end of the column 13a, and the second conductive medium 13c has a second connection position 1302 exposed at the rear end of the column 13a. The first connection position 1301 is annular and surrounds the periphery of the second connection position 1302. Based on the above structure, the first connection portion 1001 is connected to the first connection position 1301, and the second connection portion 1002 is connected to the second connection position 1302. In this way, electrical conduction is formed between the conductance head 10 and the conductive adapter 13.

[0069] Further, as Figure 3 and Figure 5 shown, a groove is provided at the front end of the push rod 3, the conductance head 10 is disposed in the groove, and the groove wall is provided with mounting threads. The first conductor 10a is screwed to the groove wall through the mounting threads.

[0070] Further, as Figure 7 shown, the hole wall of the through hole 401 is provided with second connection threads. The first conductive medium 13b of the conductive adapter 13 further has a fixing portion 1306 exposed at the side wall of the column 13a. The fixing portion 1306 is screwed to the hole wall of the through hole 401 through the second connection threads.

[0071] Further, as Figures 5 to 7 shown, a first wiring portion 1004 is provided at the rear end of the first conductor 10a, and the first wire 11 is connected to the first wiring portion 1004; a second wiring portion 1005 is provided at the rear end of the second conductor 10b, and the second wire 12 is connected to the second wiring portion 1005. In this embodiment, the first wiring portion 1004 is annular and surrounds the periphery of the second wiring portion 1005, and the second wiring portion 1005 is columnar.

[0072] Optionally, as Figures 5 to 7As shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, the first connection position 1301 is inserted into the annular opening of the first connection portion 1001. The second connection portion 1002 is provided with a socket 1003, and the second connection position 1302 is columnar and inserted into the socket 1003. In this way, a more stable electrical connection can be formed between the conductance head 10 and the conductive adapter 13. Of course, in other specific embodiments, it may also be that the first connection position 1301 is inserted into the annular opening of the first connection portion 1001, the second connection position 1302 is provided with a socket 1003, and the second connection portion 1002 is columnar and inserted into the socket 1003.

[0073] Optionally, as Figure 4 shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, a sealing ring 14 is provided between the push rod 3 and the through hole 401 to prevent impurities such as water and steam from entering the through hole 401 and damaging the electrical connection between the conductance head 10 and the conductive adapter 13.

[0074] Optionally, as Figures 4 to 5 shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, the inside of the push rod 3 is provided with a through hole 301, and the through hole 301 is communicated with the groove. The first wire 11 and the second wire 12 pass through the through hole 301. In order to optimize the arrangement of the first wire 11 and the second wire 12, the through hole 301 penetrates through both ends of the push rod 3.

[0075] Optionally, as Figure 1 shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, an encoder gear 24 can be provided at the rear end of the rotating shaft 2, and the wireless receiving component 9 is provided on the encoder gear 24.

[0076] As Figure 2 and Figure 8As shown in the figure, the ultrasonic machining assembly includes an ultrasonic tool shank and a tool 15. Among them, the ultrasonic tool shank further includes a tool shank body 16, a horn 17, and a vibrator 18. The tool shank body 16 can be sleeved with the rotating shaft 2 through the sleeve hole 201 to rotate along with the rotation of the rotating shaft 2. An installation groove 1601 is provided at the front end of the tool shank body 16. The horn 17 is fixedly connected to the tool shank body 16 through the installation groove 1601. The connection method here can be plug-in or screwed connection. The vibrator 18 is arranged in the installation groove 1601 and fixed on the horn 17. The front end of the horn 17 is conical. An assembly groove is provided on the tool 15, and the tool 15 is connected to the front end of the horn 17 through this assembly groove. Of course, the above connection method can be plug-in or screwed connection. It should be noted that the tool 15 can also be connected to the front end of the horn 17 in other ways. For example, a fixing groove is provided at the front end of the horn 17, and the tool 15 is directly connected to the horn 17 through the fixing groove. Or, the tool 15 is plugged or screwed to the fixing groove through a collet sleeved on its outside. In order to improve the connection stability between the tool 15 and the ultrasonic tool shank, the ultrasonic tool shank further includes a sealing nut, and the sealing nut is screwed to the front end of the horn 17 and presses the collet.

[0077] Further, as Figure 3 and Figure 9 shown in the figure, the ultrasonic tool shank further includes an electrical connector 19. The electrical connector 19 includes a rod body 19a and a first conductive member 19b and a second conductive member 19c provided on the rod body 19a and insulated from each other. The rod body 19a is erected on the tool shank body 16. The first conductive member 19b is electrically connected to the first electrode of the vibrator 18 through a first wire 20, and the second conductive member 19c is electrically connected to the second electrode of the vibrator 18 through a second wire 21.

[0078] It should be noted that in this embodiment, the electrical connection structure of the ultrasonic spindle 1000 includes a push rod 3, a conductivity head 10, a sleeve body 4, and a conductive adapter 13. The conductive structure of the ultrasonic spindle 1000 includes the sleeve body 4 and the conductive adapter 13.

[0079] Based on the above structure, when the tool shank body 16 is sleeved with the rotating shaft 2, the rear end of the rod body 19a extends into the through hole 401 of the sleeve body 4. The first conductive member 19b contacts the first conductive medium 13b to form an electrical connection, and the second conductive member 19c contacts the second conductive medium 13c to form an electrical connection. In this way, an electrical conduction is also formed between the ultrasonic tool shank and the rotating shaft 2. The current generated by the coil of the wireless receiving component 9 cutting the magnetic induction line can be transmitted to the vibrator 18, making it generate high-frequency vibration to improve the cutting operation effect of the tool 15.

[0080] Compared with the prior art, the ultrasonic spindle 1000 provided by the present invention can arrange an electrical connector 19 at the rear end of the handle body 16 and a conductive adapter 13 in the sleeve 4, so that the contact electrical connection between the ultrasonic handle and the rotating shaft 2 is located inside the ultrasonic handle or the rotating shaft 2, rather than being exposed in the gap between the ultrasonic handle and the rotating shaft 2, thereby avoiding leakage and eliminating safety hazards.

[0081] Furthermore, if Figure 3 , Figures 5 to 8 As shown, the rear end of the handle body 16 is provided with a connecting groove 1602, the rod body 19a is vertically arranged in the connecting groove 1602, the groove wall of the connecting groove 1602 is provided with a flange 1603, and the front end of the pull claw 5 is provided with a claw hook 501. When the handle body 16 is sleeved with the rotating shaft 2, there are two states between the claw hook 501 and the flange 1603: Figure 1 As shown, the expansion protrusion 402 of the sleeve body 4 opens the claw 5, and the claw hook 501 is hooked with the flange 1603 to ensure that the handle body 16 will not be separated from the rotating shaft 2 during rotation; the expansion protrusion 402 of the sleeve body 4 leaves the claw 5, the claw 5 is retracted, and the claw hook 501 is disengaged from the flange 1603 to realize the tool retracting operation.

[0082] Furthermore, if Figure 3 , Figures 5 to 8 As shown, the front end of the column 13a of the conductive adapter 13 is provided with a slot 1303 into which the rod 19a of the power supply connector 19 is inserted, and the first conductive medium 13b is provided with a first contact portion 1304 exposed from the slot wall of the slot 1303, and the second conductive medium 13c is provided with a second contact portion 1305 exposed from the slot wall of the slot 1303. Exemplarily, the first conductive medium 13b and the second conductive medium 13c are H-shaped spring structures similar to headphone jacks, and the first conductive medium 13b and the second conductive medium 13c are cross- and insulated from each other. Correspondingly, the first conductive member 19b and the second conductive member 19c of the electrical connector 19 are both made of metal, and the rod body 19a is preferably made of insulating plastic, and the first conductive member 19b and the second conductive member 19c are partially embedded inside by injection molding, and the first conductive member 19b is provided with a first contact position 1901 exposed on the outer wall of the rod body 19a, and the second conductive member 19c is provided with a second contact position 1902 exposed on the outer wall of the rod body 19a. Based on the above structure, when the handle body 16 is sleeved with the rotating shaft 2, the rear end of the rod body 19a of the electrical connector 19 extends into the through hole 401 of the sleeve body 4 and is inserted into the slot 1303 of the column 13a of the conductive adapter 13, and the first contact portion 1304 contacts the first contact position 1901, and the second contact portion 1305 contacts the second contact position 1902, so that electrical conduction is formed between the conductive adapter 13 and the electrical connector 19.

[0083] Compared with the prior art, on the one hand, since the conductive adapter 13 concentrates two conductive media on a cylinder 13a and the electrical connector 19 concentrates two conductive members on a rod 19a, the double alignment between the two conductive media and the two conductive members is thus transformed into a single alignment between the cylinder 13a and the rod 19a, greatly reducing the alignment difficulty. In this way, during the connection process between the ultrasonic tool shank and the rotating shaft 2, an effective electrical connection can be very smoothly formed between the conductive adapter 13 and the electrical connector 19, and the electrical conduction is stable, which can improve the cutting operation effect of the high-frequency vibration of the ultrasonic spindle 1000. On the other hand, thanks to the support of the cylinder 13a, the conductive medium is not easily worn or bent when forming an electrical connection with the conductive member. Similarly, thanks to the support of the rod 19a, the conductive member is not easily worn or bent when forming an electrical connection with the conductive medium. Therefore, a stable electrical conduction can be formed between the conductive adapter 13 and the electrical connector 19, and there will be no problem of poor contact, and the service life of the ultrasonic spindle 1000 can be effectively extended.

[0084] Further, as Figure 9 shown, the first conductive member 19b is provided with a first wiring position 1903 exposed at the front end of the rod 19a, the first wire 20 is connected to the first wiring position 1903, the second conductive member 19c is provided with a second wiring position 1904 exposed at the front end of the rod 19a, and the second wire 21 is connected to the second wiring position 1904. In this embodiment, the first wiring position 1903 is annular and surrounds the periphery of the second wiring position 1904, and the second wiring position 1904 is columnar.

[0085] Optionally, as Figure 3 and Figure 5 shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, a sealing ring 14 is provided at a position close to the slot opening in the slot 1303. In this way, when the rear end of the rod 19a is inserted into the slot 1303 of the cylinder 13a, the sealing ring 14 can clean the water or debris on the rod 19a to improve the reliability of the electrical connection between the conductive medium and the conductive member.

[0086] Optionally, as Figure 9 shown, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, a sinking groove 1604 is provided at the bottom of the connection groove 1602, and the front end of the rod 19a is fixed in the sinking groove 1604. Exemplarily, a collar 22 is sleeved on the front end of the rod 19a, and the collar 22 is screwed or welded to the sinking groove 1604. In addition, in order to prevent impurities such as water and steam from corroding the conductive member, a sealing ring 14 is also provided between the collar 22 and the rod 19a.

[0087] Optionally, as Figure 9As shown in the figure, as a specific embodiment of the ultrasonic spindle 1000 provided by the present invention, a communication hole 1605 is provided between the sinking groove 1604 and the installation groove 1601. The first wire 20 passes through the communication hole 1605 and is electrically connected to the first conductive member 19b, and the second wire 21 passes through the communication hole 1605 and is electrically connected to the second conductive member 19c. In this embodiment, the first wiring position 1903 of the first conductive member 19b and the second wiring position 1904 of the second conductive member 19c pass through the communication hole 1605 and extend into the installation groove 1601 to facilitate the connection of the wires.

[0088] Embodiment Two

[0089] As Figure 10 shown in the figure, an ultrasonic machine tool provided by an embodiment of the present invention mainly includes an ultrasonic power supply 2000 and the ultrasonic spindle 1000 provided in Embodiment One. Among them, the wireless transmission component 8 of the ultrasonic spindle 1000 is electrically connected to the ultrasonic power supply 2000.

[0090] In summary, the embodiments of the present invention provide an ultrasonic spindle 1000 and an ultrasonic machine tool including the same. Compared with the prior art, the ultrasonic spindle 1000 has the advantages of easy maintenance, convenient disassembly and assembly, stable electrical conduction, high safety, good processing effect, etc. The ultrasonic machine tool also has the advantages of stable electrical conduction and good processing effect because it adopts the above-mentioned ultrasonic spindle 1000.

[0091] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. An ultrasonic spindle, characterized in that, Comprising: A rotating shaft, an internal cavity is provided in the rotating shaft, and a sleeve hole communicating with the cavity is provided at the front end of the rotating shaft; A push rod, which is arranged in the cavity and can slide along the cavity. A conductivity head is provided at the front end of the push rod. The conductivity head includes a first conductor and a second conductor insulated from each other; A sleeve body, detachably connected to the front end of the push rod and can slide along with the push rod. A through hole penetrating through the front and rear ends of the sleeve body is provided in the sleeve body, and a conductive adapter is provided in the through hole. The conductive adapter includes a cylinder and a first conductive medium and a second conductive medium provided on the cylinder. The first conductive medium is electrically connected to the first conductor, and the second conductive medium is electrically connected to the second conductor; A claw, which is sleeved outside the sleeve body; An ultrasonic tool handle, which includes a tool handle body, a horn, an oscillator and an electrical connector. The rear end of the tool handle body can be connected to the rotating shaft through the sleeve hole. An installation groove is provided at the front end of the tool handle body. The horn is connected to the tool handle body through the installation groove. The oscillator is arranged on the horn. The electrical connector includes a rod body and a first conductive member and a second conductive member insulated from each other provided on the rod body. The rod body is erected on the tool handle body. The first conductive member is electrically connected to the first electrode of the oscillator through a first wire, and the second conductive member is electrically connected to the second electrode of the oscillator through a second wire. And, Both the first conductive medium and the second conductive medium are partially embedded in the interior of the cylinder. A slot for inserting the rod body is provided at the front end of the cylinder. The first conductive medium is provided with a first contact part exposed outside the slot wall of the slot. The second conductive medium is provided with a second contact part exposed outside the slot wall of the slot. And, both the first conductive member and the second conductive member are partially embedded in the interior of the rod body. The first conductive member is provided with a first contact position exposed outside the outer wall of the rod body for forming an electrical connection after contacting the first contact part. The second conductive member is provided with a second contact position exposed outside the outer wall of the rod body for forming an electrical connection after contacting the second contact part.

2. The ultrasonic spindle according to claim 1, wherein The second conductor is arranged inside the first conductor, and the two are connected as a whole through an insulator. A first connection part is provided at the front end of the first conductor, and a second connection part is provided at the front end of the second conductor. The first connection part is annular and surrounds the periphery of the second connection part.

3. The ultrasonic spindle according to claim 2, wherein Both the first conductive medium and the second conductive medium are partially embedded in the interior of the cylinder. The first conductive medium is provided with a first connection position exposed outside the rear end of the cylinder. The second conductive medium is provided with a second connection position exposed outside the rear end of the cylinder. The first connection position is annular and surrounds the periphery of the second connection position. The first connection part is connected to the first connection position, and the second connection part is connected to the second connection position.

4. The ultrasonic spindle according to claim 3, wherein, The first connection part is inserted into the ring opening of the first connection position; or The first connection position is inserted into the ring opening of the first connection part.

5. The ultrasonic spindle according to claim 3, wherein The second connecting part is provided with a socket, and the second connecting position is columnar and inserted into the socket; or The second connecting position is provided with a socket, and the second connecting part is columnar and inserted into the socket.

6. The ultrasonic spindle according to claim 1, wherein A groove is provided at the front end of the push rod, and mounting threads are provided on the groove wall of the groove. The conductance head is screwed to the groove wall of the groove through the mounting threads.

7. The ultrasonic spindle according to claim 1, characterized in that, First connecting threads are provided on the hole wall of the through hole, and the front end of the push rod is screwed to the hole wall of the through hole through the first connecting threads.

8. The ultrasonic spindle according to claim 7, wherein A sealing ring is provided between the push rod and the through hole.

9. The ultrasonic spindle according to claim 1, characterized in that, Second connecting threads are provided on the hole wall of the through hole, and the conductive adapter is screwed to the hole wall of the through hole through the second connecting threads.

10. The ultrasonic spindle according to claim 1, characterized in that, A sealing ring is provided at a position close to the slot opening in the slot.

11. The ultrasonic spindle according to claim 1, wherein Both the first conductive member and the second conductive member are embedded inside the rod body, and the first conductive member is provided with a first wiring position exposed at the front end of the rod body. The first wire is connected to the first wiring position. The second conductive member is provided with a second wiring position exposed at the front end of the rod body, and the second wire is connected to the second wiring position.

12. The ultrasonic spindle according to claim 1, wherein A limiting boss for restricting the sliding of the claw is provided on the wall of the cavity of the cavity. A claw hook is provided at the front end of the claw. A connecting groove is provided at the rear end of the knife handle body. A flange is provided on the groove wall of the connecting groove. The claw hook is hooked or disengaged from the flange, and the rod body is erected in the connecting groove.

13. The ultrasonic spindle according to claim 12, characterized in that, The outer wall of the sleeve body near its front end is provided with an expansion protrusion for expanding the claw.

14. The ultrasonic spindle according to claim 12, wherein, An elastic member is hoop-mounted outside the claw.

15. The ultrasonic spindle according to claim 12, characterized in that, A sunken groove is provided at the bottom of the connecting groove, and the front end of the rod body is fixed in the sunken groove.

16. The ultrasonic spindle according to claim 15, characterized in that, A collar is sleeved on the front end of the rod body, and the collar is screwed or welded to the sunken groove.

17. The ultrasonic spindle according to claim 16, wherein A sealing ring is provided between the collar and the rod body.

18. The ultrasonic spindle according to claim 15, characterized in that, The oscillator is arranged in the installation groove. A communication hole is provided between the sunken groove and the installation groove. The first wire passes through the communication hole and is electrically connected to the first conductive member. The second wire passes through the communication hole and is electrically connected to the second conductive member.

19. The ultrasonic spindle according to claim 1, characterized in that, It further includes a cylinder base. The rotating shaft is rotatably inserted into the inside of the cylinder base. A wireless transmission component is provided inside the cylinder base. A wireless receiving component is provided on the rotating shaft and is arranged opposite to the wireless transmission component at an interval. The first conductor is electrically connected to the coil of the wireless receiving component through a first wire. The second conductor is electrically connected to the coil of the wireless receiving component through a second wire.

20. The ultrasonic spindle according to claim 19, wherein, The cylinder base includes a main housing and a rear end cover provided at the rear end of the main housing. The rotating shaft is rotatably inserted into the inside of the main housing. The wireless receiving component is arranged at the rear end of the rotating shaft. The wireless transmission component is arranged inside the rear end cover.

21. The ultrasonic spindle according to claim 20, characterized in that, It further includes an encoder gear. The encoder gear is arranged at the rear end of the rotating shaft, and the wireless receiving component is arranged on the encoder gear.

22. The ultrasonic spindle according to claim 19, characterized in that, A first wiring portion is provided at the rear end of the first conductor. The first wire is connected to the first wiring portion. A second wiring portion is provided at the rear end of the second conductor. The second wire is connected to the second wiring portion.

23. The ultrasonic spindle according to claim 19, characterized in that, The push rod is provided with a through hole, and the first wire and the second wire pass through the through hole.

24. An ultrasonic machine tool, characterized in that, Comprising the ultrasonic spindle according to any one of claims 1-23.

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