CN210702600U - Ultrasonic wave main shaft and electric conduction structure - Google Patents

Abstract

The utility model relates to the technical field of precision machining, and discloses an ultrasonic main shaft and an electric conduction structure thereof, wherein the electric conduction structure comprises a lantern ring which is sleeved outside an ultrasonic knife handle and is detachably connected with a rotating shaft; and a second electric contact used for being electrically connected with the ultrasonic knife handle is arranged on the inner side wall of the lantern ring, a third electric contact is arranged on the rear end face of the lantern ring, and the second electric contact is electrically connected with the third electric contact. The utility model has the advantages that: the structure is led to as the transition piece, sets up second electric contact and third electric contact respectively at the inside wall and the rear end face of structure are led to in the electricity, correspondingly, is provided with conductive joint in the rear end of rotation axis, locates the ultrasonic wave handle of a knife with the structure cover that leads to in the electricity, and conductive joint, third electric contact, second electric contact and ultrasonic wave handle of a knife connect gradually, realize stable electricity and transmit, and can reduce cost of maintenance, shorten maintenance cycle.

Description

Ultrasonic wave main shaft and electric conduction structure

Technical Field

The utility model relates to a precision finishing technical field especially relates to an ultrasonic wave main shaft and ultrasonic wave handle of a knife and electric conduction structure of rotation axis.

Background

At present, in order to improve cutting ability, to improve surface roughness of a cut surface and machining accuracy, and to effectively prolong a service life of a tool when machining a hard and brittle material, an ultrasonic machine tool is widely used, which introduces ultrasonic vibration during machining.

The ultrasonic machine tool generally comprises an ultrasonic power supply and an ultrasonic main shaft, wherein the ultrasonic main shaft comprises a cylinder seat, a rotating shaft and an ultrasonic tool shank, the ultrasonic tool shank is connected with the rotating shaft and rotates along with the rotation of the rotating shaft, and the ultrasonic tool shank is required to be electrically connected with the ultrasonic power supply in the operation process.

In the prior art, a wireless transmitting component and a wireless receiving component are generally arranged on a cylinder base and a rotating shaft respectively, the wireless transmitting component is electrically connected with an ultrasonic power supply, in addition, an output electric contact electrically connected with the wireless receiving component is arranged on the rotating shaft at the joint part of the rotating shaft and an ultrasonic knife handle, and an input electric contact jointed and communicated with the output electric contact is arranged on the ultrasonic knife handle, so that an electric signal is transmitted to the ultrasonic knife handle from the ultrasonic power supply.

However, the electrical connection structure of the ultrasonic machine tool described above has the following disadvantages: the output electric contact and the input electric contact are directly and respectively arranged on the ultrasonic knife handle and the rotating shaft, if rigid collision or abrasion occurs in the assembling and running processes, the output electric contact or the input electric contact can be damaged, the electric contacts arranged in the rotating shaft and the ultrasonic knife handle need to be maintained and replaced, the maintenance and the replacement are complex, and the maintenance cost is high, and the maintenance period is long.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the ultrasonic spindle and the electric conduction structure can realize stable electric transmission, simplify maintenance and replacement, reduce maintenance cost and shorten maintenance period.

In order to achieve the above object, a first aspect of the present invention provides an electrical conduction structure, which includes a sleeve ring that is sleeved outside an ultrasonic knife handle and detachably connected to a rotation shaft;

and a second electric contact used for being electrically connected with the ultrasonic knife handle is arranged on the inner side wall of the lantern ring, a third electric contact is arranged on the rear end face of the lantern ring, and the second electric contact is electrically connected with the third electric contact.

Preferably, the second electrical contact includes a second positive contact and a second negative contact insulated from each other, and the third electrical contact includes a third positive contact and a third negative contact insulated from each other;

the second positive contact is electrically connected with the third positive contact, and the second negative contact is electrically connected with the third negative contact.

Preferably, a first conductive member and a second conductive member, both of which are annular, are sleeved on the lantern ring along the axial direction of the lantern ring, the first conductive member is defined as the second positive contact, the second conductive member is defined as the second negative contact, and at least part of each of the first conductive member and the second conductive member is exposed out of the inner side wall of the lantern ring;

the lantern ring is also provided with a first conductor and a second conductor at intervals, the first conductor is defined as the third positive contact, the second conductor is defined as the third negative contact, and at least part of the first conductor and the second conductor are exposed out of the rear end face of the lantern ring;

the first conductor and the first conductive piece and the second conductor and the second conductive piece are connected through a lead respectively.

Preferably, a first conductive elastic sheet and a second conductive elastic sheet are arranged on the lantern ring at intervals, the first conductive elastic sheet is defined as the second positive contact, the second conductive elastic sheet is defined as the second negative contact, and at least part of the first conductive elastic sheet and part of the second conductive elastic sheet are exposed out of the inner side wall of the lantern ring;

the lantern ring is also provided with a first conductor and a second conductor at intervals, the first conductor is defined as the third positive contact, the second conductor is defined as the third negative contact, and at least part of the first conductor and the second conductor are exposed out of the rear end face of the lantern ring;

the first conductor and the first conductive elastic sheet and the second conductor and the second conductive elastic sheet are connected through a lead respectively.

Preferably, a first insulating mounting seat and a second insulating mounting seat are arranged on the inner side wall of the lantern ring, the first conductive elastic sheet is mounted in the first insulating mounting seat, and the second conductive elastic sheet is mounted in the second insulating mounting seat.

As a preferred scheme, the first conductive elastic sheet and the second conductive elastic sheet both comprise a clamping part and an abutting part which are sequentially connected;

a first slot and a first clamping slot which are mutually communicated are arranged in the first insulating mounting seat, the first slot penetrates through the inner side of the first insulating mounting seat, the clamping part of the first conductive elastic sheet is clamped in the first clamping slot in a matching way, the abutting part of the first conductive elastic sheet is arranged in the first slot and partially protrudes out of the inner side surface of the first insulating mounting seat,

the second insulating mounting seat is internally provided with a second slot and a second clamping groove which are communicated with each other, the second slot penetrates through the inner side of the second insulating mounting seat, the clamping part of the second conductive elastic sheet is clamped in the second clamping groove in a matching manner, and the abutting part of the second conductive elastic sheet is arranged in the second slot and partially protrudes out of the inner side surface of the second insulating mounting seat.

Preferably, the first slot penetrates through the outer side of the first insulating mounting seat, and the second slot penetrates through the outer side of the second insulating mounting seat.

Preferably, the electrically conductive structure includes at least two first conductive elastic pieces and at least two second conductive elastic pieces, and each of the first conductive elastic pieces and the second conductive elastic pieces are distributed at intervals along the circumferential direction of the collar.

Preferably, the rear ends of the first conductor and the second conductor are both protruded from the rear end surface of the collar.

Preferably, the rear end surface of the sleeve ring is provided with a first sliding groove and a second sliding groove, and the first conductor and the second conductor are slidably disposed in the first sliding groove and the second sliding groove through an elastic member, respectively.

In a second aspect of the present invention, there is provided an ultrasonic spindle, including: a cartridge holder, a rotating shaft, an ultrasonic tool holder, and an electrically conductive structure according to any one of the first aspect;

the rotating shaft is rotatably arranged in the barrel seat, the rear end of the rotating shaft is provided with a conductive joint, the sleeve ring is sleeved outside the ultrasonic knife handle and fixedly connected with the rotating shaft, so that the second electric contact is electrically connected with the ultrasonic knife handle, and the third electric contact is electrically connected with the conductive joint.

The embodiment of the utility model provides an ultrasonic wave main shaft compares with prior art, and its beneficial effect lies in:

an electric conduction structure is arranged between the ultrasonic knife handle and the rotating shaft to serve as a transition piece, the electric conduction structure comprises a lantern ring sleeved outside the ultrasonic knife handle, a second electric contact is arranged on the inner side of the lantern ring, and a third electric contact connected with the second electric contact is arranged on the rear end face of the lantern ring; correspondingly, a first electric contact is arranged on the outer side wall of the cutter handle body, and a conductive joint is arranged at the front end of the rotating shaft; when the lantern ring is sleeved outside the knife handle body, the first electric contact, the second electric contact, the third electric contact and the conductive connector are electrically connected in sequence, so that an electric signal can be transmitted to the ultrasonic knife handle from the ultrasonic power supply; in the assembling and running processes, if rigid collision or abrasion occurs, the lantern ring is sleeved outside the ultrasonic knife handle to serve as a transition piece, the lantern ring and the electric contact arranged on the lantern ring can be maintained and replaced through the transition piece, the stability of electric transmission is kept, the maintenance and the replacement are simple, and therefore the maintenance cost can be reduced, and the maintenance period is shortened.

Drawings

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

FIG. 2 is an enlarged, fragmentary schematic view of FIG. 1 of the electrical connection to the ultrasonic blade handle and the rotation axis;

fig. 3 is a schematic structural view of an ultrasonic knife handle in the first embodiment of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of FIG. 3;

FIG. 5 is a partially enlarged schematic view of an electrically conducting structure according to the first embodiment;

fig. 6 is a schematic structural view of the ultrasonic spindle according to the second embodiment of the present invention after the cartridge holder is hidden.

In the figure, 1, a cylinder seat; 2. a rotating shaft; 21. trepanning; 3. an ultrasonic knife handle; 31. a knife handle body; 311. a front section of the body; 3111. an accommodating cavity; 312. a rear section of the body; 3121. mounting holes; 313. a first positive electrode contact; 314. a first negative contact; 315. a first wire slot; 316. a second wire slot; 317. an annular groove; 318. an airway; 32. an amplitude transformer; 33. an ultrasonic transducer; 331. a vibrator; 332. a positive electrode plate; 333. a negative electrode plate; 34. a counterweight ring; 4. a wire; 5. an electrically conductive structure; 51. a collar; 511. a first chute; 512. a second chute; 52. a second positive electrode contact; 53. a second negative contact; 54. a third positive electrode contact; 55. a third negative contact; 56. an elastic member; 6. a positive conductive contact; 61. a first groove; 7. a negative conductive tab; 71. a second groove; 8. a wireless transmitting component; 9. a wireless receiving component; 10. a base; 101. a first annular accommodating groove; 20. a bearing end cap; 201. a second annular accommodating groove; 30. a first conductive elastic sheet; 301. a clamping part; 302. an abutting portion; 40. a second conductive elastic sheet; 50. a first conductive member; 60. a second conductive member; 70. a first electrical conductor; 80. a second electrical conductor; 90. a first insulating mount; 901. a first slot; 902. a first card slot; 100. a second insulating mount; 1001. a second slot; 1002. and a second card slot.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish the same type of information from each other. 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 present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The terms described above or the specific meanings in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, the terms "front end" and "rear end" mean that, when the ultrasonic machine tool is used for machining, the end close to the workpiece is the "front end" and the end away from the workpiece is the "rear end".

The first aspect of the utility model provides an ultrasonic main shaft specifically includes following embodiment:

example one

As shown in fig. 1 to 5, the present embodiment provides an ultrasonic spindle, which includes: the device comprises a cylinder seat 1, a rotating shaft 2, a conductive joint, an ultrasonic knife handle 3 and an electric conduction structure 5;

the rotating shaft 2 is rotatably arranged in the cylinder seat 1, and the front end of the rotating shaft 2 is provided with a trepan boring 21; the conductive joint is arranged at the front end of the rotating shaft 2; the ultrasonic knife handle 3 comprises a knife handle body 31, an amplitude transformer 32 and an ultrasonic transducer 33, the rear end of the knife handle body 31 is assembled in the trepanning 21, the knife handle body 31 rotates along with the rotation of the rotating shaft 2, the front end of the knife handle body 31 is provided with an accommodating cavity 3111, the rear end of the amplitude transformer 32 is arranged in the accommodating cavity 3111, the ultrasonic transducer 33 is installed at the rear end of the amplitude transformer 32, the outer side wall of the knife handle body 31 is provided with a first electric contact, and the first electric contact is electrically connected with the ultrasonic transducer 33 through a lead 4; as shown in fig. 5, the electrically conducting structure 5 includes a collar 51, a second electrical contact disposed on an inner side wall of the collar 51, and a third electrical contact disposed on a rear end surface of the collar 51 and electrically connected to the second electrical contact, the collar 51 is sleeved outside the tool holder body 31 and detachably disposed at the front end of the rotating shaft 2, so that the second electrical contact is electrically connected to the first electrical contact, and the third electrical contact is electrically connected to the electrically conducting connector.

In this embodiment, through setting up electrically conductive structure 5 as the transition piece, in assembly and operation process, if take place rigid collision or wearing and tearing, can be through maintenance and change lantern ring 51 and locate the electric contact on it with the stability of keeping the electricity connection, maintenance and change are all simpler to can reduce cost of maintenance, shorten maintenance cycle.

Illustratively, the collar 51 is provided as a plastic piece; therefore, the abrasion to the rotating shaft 2 and the ultrasonic knife handle 3 is reduced in the mode of sacrificing the lantern ring 51, when the lantern ring 51 is abraded, the stability of electricity transmission can be kept only by maintaining or replacing the lantern ring and the electric contact on the lantern ring, and the maintenance and the replacement are convenient and fast.

In this embodiment, this electric conduction structure 5 not only is applicable to on the HSK handle of a knife, can also be used for BT handle of a knife or other types handle of a knife, and the suitability is stronger, is convenient for realize the mass production of part, the change of further being convenient for part.

Illustratively, in this embodiment, the tool holder body 31 includes a front body section 311 and a rear body section 312, which are sequentially connected from front to back, an outer side surface of the rear body section 312 is a tapered surface with an outer diameter gradually decreasing from front to back, and the rear body section 312 is fittingly assembled in the trepan boring 21 of the rotating shaft 2. The first electrical contact is disposed on the outer sidewall of the front body section 311, and the receiving cavity 3111 is opened on the front body section 311 and penetrates through the front end surface of the front body section 311.

Specifically, in the present embodiment, since alternating current is used in the ultrasonic processing, the conductive tabs include a positive conductive tab 6 and a negative conductive tab 7 that are insulated from each other; correspondingly, the ultrasonic transducer 33 includes a vibrator 331, and a positive electrode tab 332 and a negative electrode tab 333 connected to and insulated from the vibrator 331, the first electrical contact includes a first positive contact 313 and a first negative contact 314 insulated from each other, the second electrical contact includes a second positive contact 52 and a second negative contact 53 insulated from each other, and the third electrical contact includes a third positive contact 54 and a third negative contact 55 insulated from each other.

The first positive contact 313 and the first negative contact 314 are respectively connected with the positive electrode tab 332 and the negative electrode tab 333 through a lead 4, the first positive contact 313, the second positive contact 52, the third positive contact 54 and the positive electrode conductive connector 6 are sequentially electrically connected, and the first negative contact 314, the second negative contact 53, the third negative contact 55 and the negative electrode conductive connector 7 are sequentially electrically connected.

In this embodiment, in order to further ensure the transmission of the electric signal from the ultrasonic power supply to the conductive connector, the ultrasonic spindle further comprises a wireless transmitting component 8 and a wireless receiving component 9, wherein the wireless transmitting component 8 is installed at the front end of the cylinder seat 1; the wireless receiving assembly 9 is installed on the rotating shaft 2 and is oppositely arranged at the front end of the wireless transmitting assembly 8, the wireless receiving assembly 9 is provided with an anode output end and a cathode output end, the anode output end is electrically connected with the anode conductive joint 6 through a lead 4, and the cathode output end is electrically connected with the cathode conductive joint 7 through a lead 4. The wireless transmitting component 8 and the wireless receiving component 9 are arranged at the front end part of the ultrasonic main shaft, so that a lead wire can be prevented from penetrating into the rotating shaft 2, and only the lead wire needs to penetrate into the barrel seat 1, thereby facilitating the disassembly and assembly.

Specifically, in the embodiment, the wireless receiving assembly 9 is mounted on the rotating shaft 2 through a base 10, the first annular receiving groove 101 is formed in the rear end surface of the base 10, the wireless receiving assembly 9 is disposed in the first annular receiving groove 101, and the positive conductive contact 6 and the negative conductive contact 7 are both disposed at the front end of the base 10.

More specifically, the base 10 is sleeved outside the rotating shaft 2 through a thread, so that the base is convenient to disassemble and assemble, and the gap between the wireless receiving assembly 9 and the wireless transmitting assembly 8 can be accurately adjusted through the thread.

In this embodiment, as shown in fig. 2, the collar 51 is fastened to the base 10 by screws, and the screws are screwed into the base 10 from the front end of the collar 51, so that the collar can be easily detached from the front end and fine-adjusted.

In this embodiment, further, wireless transmission subassembly 8 is installed on mount 1 through a bearing end cover 20, and bearing end cover 20 fastening connection has been seted up second annular holding tank 201 in the front end of mount 1, mainly used to compress tightly the bearing of connecting rotation axis 2 and mount 1 on the preceding terminal surface of bearing end cover 20, and wireless transmission subassembly 8 locates in second annular holding tank 201, installs wireless transmission subassembly 8 is integrated on bearing end cover 20 for the structure is compacter.

In order to ensure that after the collar 51 is sleeved on the handle body 31, the first positive contact 313 and the second positive contact 52, and the first negative contact 314 and the second negative contact 53 can be contacted to realize stable electrical conduction, in this embodiment, the handle body 31 is provided with the first conductive elastic sheet 30 and the second conductive elastic sheet 40 at intervals, the first conductive elastic sheet 30 is defined as the first positive contact 313, the second conductive elastic sheet 40 is defined as the first negative contact 314, and at least part of the first conductive elastic sheet 30 and the second conductive elastic sheet 40 is exposed out of the outer side wall of the handle body 31; a first conductive member 50 and a second conductive member 60 are arranged on the lantern ring 51 at intervals, the first conductive member 50 is defined as a second positive contact 52, the second conductive member 60 is defined as a second negative contact 53, and at least part of the first conductive member 50 and the second conductive member 60 are exposed out of the inner side wall of the lantern ring 51; the collar 51 is further provided with a first conductor 70 and a second conductor 80 at an interval, the first conductor 70 is defined as a third positive contact 54, the second conductor 80 is defined as a third negative contact 55, and at least part of each of the first conductor 70 and the second conductor 80 is exposed out of the rear end face of the collar 51.

The first conductor 70 and the first conductive member 50, and the second conductor 80 and the second conductive member 60 are connected by a wire 4, the first conductive elastic sheet 30 is abutted against the first conductive member 50, the first conductor 70 is electrically connected to the positive conductive contact 6, the second conductive elastic sheet 40 is abutted against the second conductive member 60, and the second conductor 80 is electrically connected to the negative conductive contact 7.

Further, in order to facilitate the installation of the first conductive elastic sheet 30 and the second conductive elastic sheet 40 on the handle body 31, a first insulating mounting seat 90 and a second insulating mounting seat 100 are embedded on the outer side wall of the handle body 31, the first conductive elastic sheet 30 is installed in the first insulating mounting seat 90, and the second conductive elastic sheet 40 is installed in the second insulating mounting seat 100.

Specifically, in order to facilitate the insertion and adjustment of the first conductive elastic piece 30 and the second conductive elastic piece 40, the first conductive elastic piece 30 and the second conductive elastic piece 40 both include a clamping portion 301 and a butting portion 302 which are connected in sequence; a first slot 901 and a first clamping slot 902 which are mutually communicated are formed in the first insulating mounting seat 90, the first slot 901 penetrates through the outer side of the first insulating mounting seat 90, the clamping portion 301 of the first conductive elastic sheet 30 is clamped in the first clamping slot 902 in a matching manner, the clamping portion 301 of the first conductive elastic sheet 30 can be clamped in the first clamping slot 902 in a matching manner after being inserted from the first slot 901, and the abutting portion 302 of the first conductive elastic sheet 30 is arranged in the first slot 901 and partially protrudes out of the outer side surface of the first insulating mounting seat 90 to abut against the first conductive member 50; set up second slot 1001 and second draw-in groove 1002 that communicate each other in the insulating mount pad 100 of second, second slot 1001 runs through the outside of insulating mount pad 100 of second, the joint portion 301 cooperation card of the electrically conductive shell fragment 40 of second is located in second draw-in groove 1002, can insert back and the cooperation chucking of second draw-in groove 1002 with the joint portion 301 of the electrically conductive shell fragment 40 of second from second slot 1001, and butt portion 302 of the electrically conductive shell fragment 40 of second locates in second slot 1001 and partial protrusion in the lateral surface and the electrically conductive looks butt of 60 of second of insulating mount pad 100.

As shown in fig. 2, the abutting portion 302 is bent to protrude outward, and when the collar 51 is mounted outside the holder body 31, the abutting portion 302 is elastically deformed to be in contact with the second positive contact 52 or the second negative contact 53.

Further, referring specifically to fig. 2, a first slot 902 extends through the inside of the first insulative mounting block 90, and a second slot 1002 extends through the inside of the second insulative mounting block 100; the handle body 31 is provided with a first wire groove 315 communicating the first clamping groove 902 with the accommodating cavity 3111 and a second wire groove 316 communicating the second clamping groove 1002 with the accommodating cavity 3111, so that the wire connection can be facilitated. The lead 4 connecting the first conductive elastic sheet 30 and the positive electrode tab 332 has one end connected to the clamping portion 301 of the first conductive elastic sheet 30, and the other end connected to the positive electrode tab 332 after sequentially passing through the first wire slot 315 and the accommodating cavity 3111; one end of a lead 4 connecting the second conductive elastic sheet 40 and the negative electrode tab 333 is connected to the clamping portion 301 of the second conductive elastic sheet 40, and after sequentially passing through the second wire groove 316 and the accommodating cavity 3111, the other end is connected to the negative electrode tab 333.

Preferably, in this embodiment, in order to ensure stable and reliable electrical connection, the first conductive member 50 and the second conductive member 60 are annularly sleeved outside the handle body 31; correspondingly, at least two first conductive elastic sheets 30 and at least two second conductive elastic sheets 40 are arranged, and the first conductive elastic sheets 30 and the second conductive elastic sheets 40 are distributed at intervals along the circumferential direction of the tool holder body 31, so that multipoint electric conduction can be realized.

In this embodiment, the rear ends of the first conductor 70 and the second conductor 80 protrude from the rear end surface of the sleeve ring 51, the front end surfaces of the positive conductive contact 6 and the negative conductive contact 7 are respectively provided with a first groove 61 and a second groove 71, the first conductor 70 and the second conductor 80 are respectively inserted into the first groove 61 and the second groove 71 in a matching manner, and are electrically connected through sleeving, so that the stability of electric transmission can be ensured.

Similarly, in order to avoid the unreliable electrical conduction caused by vibration during operation, the rear end surface of the collar 51 is provided with a first sliding slot 511 and a second sliding slot 512, and the first conductor 70 and the second conductor 80 are slidably disposed in the first sliding slot 511 and the second sliding slot 512 through an elastic member 56, respectively.

The elastic member 56 is illustratively a spring or rubber member, and the figures show embodiments in which the elastic member 56 is a rubber member.

In this embodiment, in order to avoid short circuit caused by conduction between the first positive contact 313 and the first negative contact 314, and between the second positive contact 52 and the second negative contact 53, an annular groove 317 is formed in the outer side wall of the tool holder body 31 at a position between the first positive contact 313 and the first negative contact 314.

Specifically, as shown in fig. 2, a sealing ring (not shown in the drawings) may be sleeved in the annular groove 317, so as to achieve contact type sealing isolation.

Alternatively, as shown in fig. 3, the mounting hole 3121 is formed at the rear end of the holder body 31, the air passage 318 communicating the annular groove 317 and the mounting hole 3121 is formed in the holder body 31, gas can be blown from the rear to the front from the inside of the rotary shaft 2, the gas sequentially passes through the mounting hole 3121, the air passage 318 and the annular groove 317, an annular gas curtain passage is formed in the annular groove 317 to isolate the first positive contact 313 and the first negative contact 314, and the second positive contact 52 and the second negative contact 53 in a non-contact manner, and the gas is blown out from the gap between the collar 51 and the holder body 31, so that the intrusion of coolant, dust, and the like from the gap can be prevented, and corrosion damage and the like to each electrical contact can be avoided.

In this embodiment, in order to ensure the stability of the ultrasonic knife handle 3 during the rotation and avoid the occurrence of vibration, the outer sleeve of the knife handle body 31 is provided with a counterweight ring 34.

Example two

As shown in fig. 6, the present embodiment also provides an ultrasonic spindle, which is different from the first embodiment in that a first conductive member 50 and a second conductive member 60 are disposed at an interval on the tool holder body 31, the first conductive member 50 is defined as a first positive contact 313, the second conductive member 60 is defined as a first negative contact 314, and both the first conductive member 50 and the second conductive member 60 are at least partially exposed out of the outer sidewall of the tool holder body 31; correspondingly, a first conductive elastic sheet 30 and a second conductive elastic sheet 40 are arranged on the lantern ring 51 at intervals, the first conductive elastic sheet 30 is defined as a second positive contact 52, the second conductive elastic sheet 40 is defined as a second negative contact 53, and at least part of the first conductive elastic sheet 30 and the second conductive elastic sheet 40 are exposed out of the inner side wall of the lantern ring 51; the collar 51 is further provided with a first conductor 70 and a second conductor 80 at intervals, the first conductor 70 is defined as a third positive contact 54, the second conductor 80 is defined as a third negative contact 55, and at least part of each of the first conductor 70 and the second conductor 80 is exposed out of the rear end face of the collar 51.

Wherein, the first conductor 70 and the first conductive elastic sheet 30, and the second conductor 80 and the second conductive elastic sheet 40 are connected by a lead 4; the first conductive member 50 is in contact with the first conductive spring 30, the first conductive member 70 is in electrical communication with the positive conductive contact 6, the second conductive member 60 is in contact with the second conductive spring 40, and the second conductive member 80 is in electrical communication with the negative conductive contact 7.

Further, in order to facilitate the first conductive elastic sheet 30 and the second conductive elastic sheet 40 to be fixedly mounted inside the collar 51, the inner side wall of the collar 51 is provided with a first insulating mounting seat 90 and a second insulating mounting seat 100, the first conductive elastic sheet 30 is mounted in the first insulating mounting seat 90, and the second conductive elastic sheet 40 is mounted in the second insulating mounting seat 100.

Similarly, to facilitate insertion and adjustment, the specific structure of the first and second insulative mounting blocks 90 and 100 can be seen in fig. 4; the first conductive elastic sheet 30 and the second conductive elastic sheet 40 respectively comprise a clamping part 301 and an abutting part 302 which are connected in sequence; a first slot 901 and a first clamping slot 902 which are mutually communicated are arranged in the first insulating mounting seat 90, the first slot 901 penetrates through the inner side of the first insulating mounting seat 90, the clamping part 301 of the first conductive elastic sheet 30 is clamped in the first clamping slot 902 in a matching manner, and the abutting part 302 of the first conductive elastic sheet 30 is arranged in the first slot 901, partially protrudes out of the inner side surface of the first insulating mounting seat 90 and abuts against the first conductive piece 50; a second slot 1001 and a second slot 1002 which are mutually communicated are arranged in the second insulating mounting seat 100, the second slot 1001 penetrates through the inner side of the second insulating mounting seat 100, the clamping portion 301 of the second conductive elastic sheet 40 is clamped in the second slot 1002 in a matching manner, and the abutting portion 302 of the second conductive elastic sheet 40 is arranged in the second slot 1001 and partially protrudes out of the inner side surface of the second insulating mounting seat 100 to abut against the second conductive piece 60.

Illustratively, the first engaging groove 902 penetrates through the outer side of the first insulating mounting seat 90, and the second engaging groove 1002 penetrates through the outer side of the second insulating mounting seat 100, so as to facilitate connection of the wires 4 between the first conductive elastic piece 30 and the first conductor 70, and between the second conductive elastic piece 40 and the second conductor 80.

In this embodiment, the abutting portion 302 is bent to protrude inward; when the collar 51 is attached to the outside of the holder body 31, the contact portion 302 is elastically deformed and brought into contact with the first positive contact 313 or the first negative contact 314.

The second aspect of the present invention further provides an ultrasonic machine tool, which comprises an ultrasonic power supply and an ultrasonic spindle as described in the first or second embodiment, wherein the wireless transmitting assembly is electrically connected to the ultrasonic power supply.

Because the utility model discloses an ultrasonic wave lathe includes the ultrasonic wave main shaft of above-mentioned arbitrary, consequently, has the whole beneficial effect of ultrasonic wave main shaft, does not do here and gives unnecessary details.

To sum up, the embodiment of the utility model provides an ultrasonic main shaft and ultrasonic machine tool, it is provided with the electric conduction structure, this electric conduction structure includes the lantern ring, set up in the inboard second electric contact of lantern ring and locate the third electric contact on its rear end face, correspondingly, be provided with first electric contact on the lateral wall of handle of a knife body, and be equipped with the conductive joint in the preceding terminal surface of rotation axis, when locating the lantern ring cover outside the handle of a knife body, first electric contact, second electric contact, third electric contact and conductive joint connect electrically in proper order, thereby can transmit the electric signal to the ultrasonic handle of a knife from ultrasonic power supply; in the assembling and running processes, if rigid collision or abrasion occurs, the lantern ring is sleeved outside the ultrasonic knife handle to serve as a transition piece, the lantern ring and the electric contact arranged on the lantern ring can be maintained and replaced through the transition piece, the stability of electric connection is kept, the maintenance and the replacement are simple, and therefore the maintenance cost can be reduced, and the maintenance period is shortened.

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 (11)

1. An electric conduction structure is characterized by comprising a lantern ring which is sleeved outside an ultrasonic knife handle and detachably connected with a rotating shaft;

and a second electric contact used for being electrically connected with the ultrasonic knife handle is arranged on the inner side wall of the lantern ring, a third electric contact is arranged on the rear end face of the lantern ring, and the second electric contact is electrically connected with the third electric contact.

2. An electrically conductive structure as in claim 1, wherein the second electrical contact comprises a second positive contact and a second negative contact insulated from each other, and the third electrical contact comprises a third positive contact and a third negative contact insulated from each other;

the second positive contact is electrically connected with the third positive contact, and the second negative contact is electrically connected with the third negative contact.

3. The electrically conductive structure of claim 2, wherein said collar has a first electrically conductive member and a second electrically conductive member disposed thereon along an axial direction thereof, said first electrically conductive member defining said second positive contact, said second electrically conductive member defining said second negative contact, said first electrically conductive member and said second electrically conductive member each being at least partially exposed to an inner sidewall of said collar;

the lantern ring is also provided with a first conductor and a second conductor at intervals, the first conductor is defined as the third positive contact, the second conductor is defined as the third negative contact, and at least part of the first conductor and the second conductor are exposed out of the rear end face of the lantern ring;

the first conductor and the first conductive piece and the second conductor and the second conductive piece are connected through a lead respectively.

4. The electrical conduction structure of claim 2, wherein a first conductive spring and a second conductive spring are spaced apart from each other on the collar, the first conductive spring defining the second positive contact, the second conductive spring defining the second negative contact, and both the first conductive spring and the second conductive spring being at least partially exposed to an inner sidewall of the collar;

the lantern ring is also provided with a first conductor and a second conductor at intervals, the first conductor is defined as the third positive contact, the second conductor is defined as the third negative contact, and at least part of the first conductor and the second conductor are exposed out of the rear end face of the lantern ring;

the first conductor and the first conductive elastic sheet and the second conductor and the second conductive elastic sheet are connected through a lead respectively.

5. The electrically conductive structure of claim 4, wherein a first insulating mounting seat and a second insulating mounting seat are disposed on an inner sidewall of the collar, the first conductive spring is mounted in the first insulating mounting seat, and the second conductive spring is mounted in the second insulating mounting seat.

6. The electrical conduction structure of claim 5, wherein the first conductive spring and the second conductive spring each comprise a snap-fit portion and an abutting portion connected in sequence;

a first slot and a first clamping slot which are mutually communicated are arranged in the first insulating mounting seat, the first slot penetrates through the inner side of the first insulating mounting seat, the clamping part of the first conductive elastic sheet is clamped in the first clamping slot in a matching way, the abutting part of the first conductive elastic sheet is arranged in the first slot and partially protrudes out of the inner side surface of the first insulating mounting seat,

the second insulating mounting seat is internally provided with a second slot and a second clamping groove which are communicated with each other, the second slot penetrates through the inner side of the second insulating mounting seat, the clamping part of the second conductive elastic sheet is clamped in the second clamping groove in a matching manner, and the abutting part of the second conductive elastic sheet is arranged in the second slot and partially protrudes out of the inner side surface of the second insulating mounting seat.

7. An electrically conductive structure as in claim 6, wherein said first slot extends through an outer side of said first insulative mounting block and said second slot extends through an outer side of said second insulative mounting block.

8. The electrical conduction structure of claim 4, comprising at least two first conductive spring pieces and at least two second conductive spring pieces, wherein each of the first conductive spring pieces and the second conductive spring pieces are distributed at intervals along the circumferential direction of the collar.

9. An electrically conductive structure as in any of claims 3-8, wherein the rear ends of the first and second electrical conductors each protrude beyond the rear end face of the collar.

10. The structure according to any one of claims 3 to 8, wherein a rear end surface of the collar has a first sliding groove and a second sliding groove, and the first conductor and the second conductor are slidably disposed in the first sliding groove and the second sliding groove respectively through an elastic member.

11. An ultrasonic spindle, comprising: a cartridge holder, a rotating shaft, an ultrasonic tool shank, and an electrically conductive structure according to any one of claims 1-10;

the rotating shaft is rotatably arranged in the barrel seat, the rear end of the rotating shaft is provided with a conductive joint, the sleeve ring is sleeved outside the ultrasonic knife handle and fixedly connected with the rotating shaft, so that the second electric contact is electrically connected with the ultrasonic knife handle, and the third electric contact is electrically connected with the conductive joint.

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