CN112317780A - Ultrasonic spindle, ultrasonic knife handle and ultrasonic machine tool - Google Patents

Ultrasonic spindle, ultrasonic knife handle and ultrasonic machine tool Download PDF

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Publication number
CN112317780A
CN112317780A CN202011243236.XA CN202011243236A CN112317780A CN 112317780 A CN112317780 A CN 112317780A CN 202011243236 A CN202011243236 A CN 202011243236A CN 112317780 A CN112317780 A CN 112317780A
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China
Prior art keywords
ultrasonic
transmitting
groove
spindle
ferrite
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Granted
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CN202011243236.XA
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Chinese (zh)
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CN112317780B (en
Inventor
颜炳姜
李伟秋
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Huizhuan Machine Tool Co ltd
Conprofe Technology Group Co Ltd
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Huizhuan Machine Tool Co ltd
Conprofe Technology Group Co Ltd
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Priority to CN202011243236.XA priority Critical patent/CN112317780B/en
Priority to PCT/CN2020/139172 priority patent/WO2022095250A1/en
Publication of CN112317780A publication Critical patent/CN112317780A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/006—Conical shanks of tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

The invention discloses an ultrasonic main shaft, an ultrasonic knife handle and an ultrasonic machine tool, which comprise: a spindle housing; the rotating shaft assembly is rotatably arranged in the main shaft shell, and a mounting hole is formed in the front end face of the rotating shaft assembly; the launcher is arranged on the front side of the spindle shell and comprises a launching part, the launching part is in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly, and a first accommodating groove in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly is formed in the front end face of the launching part; and the ultrasonic wireless transmitting unit is arranged in the first accommodating groove and comprises a transmitting ferrite and a transmitting coil accommodated in the transmitting ferrite. The ultrasonic spindle can realize interference-free automatic tool changing of the common tool holder and the ultrasonic tool holder by using the same tool magazine, realizes the universality of the tool magazine of the machine tool, and thus effectively reduces the cost.

Description

Ultrasonic spindle, ultrasonic knife handle and ultrasonic machine tool
Technical Field
The invention relates to the technical field of ultrasonic machining, in particular to an ultrasonic machining spindle, an ultrasonic tool handle and an ultrasonic machine tool.
Background
Ultrasonic machine tools are widely used because they introduce high-frequency vibration into the rotational motion of a tool, thereby improving the surface roughness of the machined surface and the machining accuracy, and also reducing the cutting resistance and prolonging the service life of the tool.
The existing ultrasonic main shaft comprises a fixed part, a rotating part, a bearing and an ultrasonic transmission device. The fixing part comprises a main shaft shell, a front end cover and other related parts. The rotating component comprises a rotating shaft and other related components. The ultrasonic transmission device can be an ultrasonic wireless transmitting device or an ultrasonic wired transmission device.
At present, the main difference of ultrasonic wave main shaft structure and ordinary lathe main shaft's structure lies in, install ultrasonic wave wireless transmission subassembly in the front side of ordinary lathe main shaft, and ultrasonic wave wireless transmission subassembly is the full ring structure, when utilizing former tool magazine to carry out the tool changing this moment, ultrasonic wave wireless transmission subassembly can take place to interfere with the tool magazine, thereby lead to can not automatic tool changing, if realize ordinary handle of a knife and ultrasonic wave handle of a knife homoenergetic on the tool magazine do not have the automatic tool changing of interference, need the tool magazine of customization non-universal type, lead to the commonality that can't realize the lathe tool magazine, thereby make the cost increase by a wide margin.
Disclosure of Invention
An aim at of this application provides an ultrasonic wave main shaft, and it can utilize same tool magazine to realize the commonality to the automatic tool changing of no interference of ordinary handle of a knife and ultrasonic wave handle of a knife, realization lathe tool magazine. Another object of the present invention is to provide an ultrasonic tool holder used in cooperation with the ultrasonic spindle and an ultrasonic machine tool including the ultrasonic spindle.
The purpose of the application is realized by the following technical scheme:
an ultrasonic spindle, comprising:
a spindle housing;
the rotating shaft assembly is rotatably arranged in the main shaft shell, and a mounting hole is formed in the front end face of the rotating shaft assembly;
the launcher is arranged on the front side of the spindle shell and comprises a launching part, the launching part is in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly, and a first accommodating groove in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly is formed in the front end face of the launching part; and
the ultrasonic wireless transmitting unit is arranged in the first accommodating groove and comprises a transmitting ferrite and a transmitting coil accommodated in the transmitting ferrite.
Wherein the central angle of the emitting part is alpha radian,
Figure BDA0002768586990000021
in some embodiments of the present application, the first and second,
Figure BDA0002768586990000022
in some embodiments of the present application, the axial depth of the first receiving groove is H mm, and H is greater than or equal to 1 and less than or equal to 35.
In some embodiments of the present application, the shape of the transmitting ferrite is adapted to the first accommodating groove, a first wire embedding groove is formed in the front end surface of the transmitting ferrite, an arc-shaped partition plate is arranged in the first wire embedding groove, a first arc-shaped wall is arranged on the inner side of the first wire embedding groove, and the partition plate and the first arc-shaped wall are concentrically arranged;
the transmitting coil is arranged in the first wire embedding groove in a surrounding mode of the partition plate.
In some embodiments of the present application, a second arc-shaped wall is further disposed at a position, opposite to the partition plate, of the outer side of the first wire burying groove.
In some embodiments of the present application, a transition wall that is convex outward is connected between an end of the first curved wall and an end of the second curved wall.
In some embodiments of the present application, the radial thickness of the partition plate and the radial thickness of the first arc-shaped wall are both (0.5-10) mm.
In some embodiments of this application, the launcher includes first connecting portion, first connecting portion connect in the outside of launcher, set up on the transmission ferrite with the outlet of first buried line groove intercommunication, be equipped with on the first connecting portion with the outlet passageway of outlet intercommunication, just be equipped with the intercommunication on the launcher outlet passageway reaches the encapsulating groove of first holding tank.
In some embodiments of the present application, the apparatus further comprises a mounting arm, and the launcher is connected to the spindle housing through the mounting arm.
In some embodiments of the present application, a front end cover is installed at a front end of the spindle housing, and the launcher is connected to the front end cover.
In some embodiments of the present application, the launcher includes a second connecting portion, and the launcher is connected to the front end face of the front end cap through the second connecting portion.
In some embodiments of this application, the outside of rotation axis subassembly with be equipped with the bearing between spindle housing's the inboard, the front end housing compress tightly in from the past backward in the outer lane of bearing, the front end periphery cover of rotation axis subassembly is equipped with the clamping ring, the clamping ring compress tightly in from the past backward in the inner circle of bearing.
In some embodiments of this application, the internal perisporium of front end housing with leave first clearance between the periphery wall of clamping ring, just the internal perisporium of front end housing is equipped with a plurality of annular protruding muscle along the axial interval.
In some embodiments of this application, lie in on the rotation axis subassembly the front side periphery cover of clamping ring is equipped with the holding ring, the front end of holding ring is equipped with location portion.
In some embodiments of the present application, an annular first step surface is disposed at the front end of the front end cover along the inner periphery thereof, a second step surface matched with the first step surface is disposed at the rear end of the positioning ring along the outer periphery thereof, and a labyrinth air passage is formed between the first step surface and the second step surface.
In some embodiments of the present application, the inner circumference diameter of the emitting portion is D1The first accommodating groove has a volume of V cubic millimeters and an inner peripheral diameter of D2Mm, the peripheral diameter of the first accommodating groove isD3Millimeter, the cross-sectional area of a single turn of wire constituting the transmitting coil is S square millimeter, the number of turns of the transmitting coil is N, and the volume of the transmitting coil is V1Cubic millimeter, volume of the emitting ferrite is V2Cubic millimeter, the above parameter values satisfy the following functional relationship:
Figure BDA0002768586990000031
Figure BDA0002768586990000041
wherein N is more than or equal to 10 and less than or equal to 300, S is more than or equal to 0.02 and less than or equal to 2.6, and K is more than or equal to 11≤10，1＜K2≤3，0.4≤K3≤2，K1、K2And K3Is a correction factor.
An ultrasonic tool shank for use with the ultrasonic spindle described above, comprising:
the rear end of the knife handle body is used for being inserted into the mounting hole in a matched mode, a knife clamping position and a receiving frame are arranged on the periphery of the knife handle body, and a second accommodating groove which is annular and surrounds the knife handle body is formed in the rear end of the receiving frame; and
and the ultrasonic wireless receiving unit is arranged in the second accommodating groove and is used for being matched with the ultrasonic wireless transmitting unit to realize ultrasonic wireless power transmission.
In some embodiments of the present application, the ultrasonic wireless receiving unit comprises a receiving ferrite and a receiving coil;
the shape of the receiving ferrite is matched with the second accommodating groove, a second wire embedding groove which is circular is formed in the rear end face of the receiving ferrite, the second wire embedding groove is provided with an inner side wall and an outer side wall which are opposite, and the receiving coil surrounds the inner side wall and is arranged in the second wire embedding groove.
In some embodiments of the present application, the periphery of handle of a knife body is equipped with towards the open constant head tank in back.
An ultrasonic machine tool, comprising:
an ultrasonic spindle as claimed in any one of the preceding claims; and
an ultrasonic tool shank according to any one of the preceding claims;
the rear end of the knife handle body is inserted into the mounting hole in a matched mode, the receiving frame is arranged on the front side of the transmitting part relatively, the second containing groove is arranged opposite to the first containing groove, and a second gap is formed between the rear end face of the ultrasonic wireless receiving unit and the front end face of the ultrasonic wireless transmitting unit.
In some embodiments of the present application, the width of the second gap is (0.1-2.5) mm.
The utility model provides an ultrasonic wave main shaft, through replacing traditional full ring type ultrasonic wave wireless transmitting assembly into the whole ring type of non-, specifically, the transmitting part that will be used for holding ultrasonic wave wireless transmitting unit sets up to the whole ring type of non-, be equipped with the opening in the side of transmitting part promptly, install back on ultrasonic wave main shaft with ultrasonic wave handle of a knife or ordinary handle of a knife of difference, the tool changing space can all be left at the opening part of transmitting part, supply the tool magazine to carry out automatic tool changing, can realize the tool magazine commonality of ordinary lathe and ultrasonic machine tool, through the commonality that realizes the lathe tool magazine, thereby make the cost reduce by a wide margin.
Drawings
The present application is described in further detail below in connection with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are intended to be conceptual in nature or configuration of the described objects and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an ultrasonic machine tool according to an embodiment of the present application;
fig. 2 is a schematic structural view of an ultrasonic spindle of the ultrasonic machine tool of the embodiment shown in fig. 1;
FIG. 3 is a schematic structural view of an ultrasonic tool shank of the ultrasonic machine tool of the embodiment shown in FIG. 1;
FIG. 4 is an enlarged schematic view of FIG. 1 at A;
FIG. 5 is a schematic cross-sectional view of FIG. 1;
FIG. 6 is an enlarged schematic view of FIG. 5 at B;
fig. 7 is a schematic view of fig. 5 about an assembly of an ultrasonic wireless transmitting unit and an ultrasonic wireless receiving unit thereof;
FIG. 8 is an enlarged schematic view at C of FIG. 7;
FIG. 9 is a schematic view of the assembled ultrasonic wireless transmitter and receiver of FIG. 7 with the transmitter coil hidden;
FIG. 10 is a schematic view of the assembly of the transmitting ferrite and the transmitter mount of FIG. 9;
FIG. 11 is an exploded schematic view of FIG. 10;
FIG. 12 is a schematic cross-sectional view of FIG. 10;
FIG. 13 is a schematic view of the front end cap of FIG. 1;
FIG. 14 is a schematic view of the retaining ring of FIG. 1;
FIG. 15 is a schematic view of the retaining ring of FIG. 14 from another perspective;
fig. 16 is a schematic structural view of an ultrasonic machine tool according to another embodiment of the present application;
FIG. 17 is an enlarged schematic view taken at D in FIG. 16;
FIG. 18 is a schematic structural view of the ultrasonic spindle of FIG. 16;
FIG. 19 is a schematic structural view of the front end cap and the launcher of the ultrasonic spindle of FIG. 18;
fig. 20 is an exploded view of fig. 19 with the sealant and transmitter coil hidden.
In the figure:
100. an ultrasonic main shaft; 1. a spindle housing; 2. a rotating shaft assembly; 21. mounting holes; 22. a positioning ring; 221. a positioning part; 222. a second step surface; 3010. an ultrasonic wireless transmitting assembly; 3. a launcher; 31. a transmitting section; 311. a first accommodating groove; 3111. an inner peripheral surface; 3112. an outer peripheral surface; 32. a first connection portion; 321. a wire outlet channel; 322. a glue pouring groove; 33. a second connecting portion; 4. an ultrasonic wireless transmitting unit; 41. an emissive ferrite; 411. a first wire burying groove; 412. a partition plate; 413. a first arcuate wall; 414. a second arcuate wall; 415. a transition wall; 416. an outlet; 42. a transmitting coil; 5. mounting an arm; 6. a bearing; 7. a front end cover; 71. an annular convex rib; 72. a first step surface; 8. pressing a ring; 9. a first gap; 110. a labyrinth air passage;
200. an ultrasonic knife handle; 10. a knife handle body; 101. clamping a cutter position; 102. positioning a groove; 20. a receiving rack; 201. a second accommodating groove; 3020. an ultrasonic wireless receiving component; 30. an ultrasonic wireless receiving unit; 301. receiving a ferrite; 3011. a second wire burying groove; 3012. an inner sidewall; 3013. an outer sidewall; 302. a receiving coil;
300. a second gap;
alpha-the value of the center angle of the emitting portion; d1-an inner circumference diameter value of the emitting portion; d2-an inner peripheral diameter value of the first receiving groove; d3-a value of the peripheral diameter of the first receiving groove; h-axial depth value of the first accommodating groove; c1-a value of the radial thickness of the separator plate; c2-a value of the radial thickness of the first curved wall; l-the width value of the second gap.
Detailed Description
Hereinafter, preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the descriptions are illustrative only, exemplary, and should not be construed as limiting the scope of the application.
First, it should be noted that the orientations of top, bottom, upward, downward, and the like referred to herein are defined with respect to the orientation in the respective drawings, are relative concepts, and thus can be changed according to different positions and different practical states in which they are located. These and other orientations, therefore, should not be used in a limiting sense.
It should be noted that the term "comprising" does not exclude other elements or steps and the "a" or "an" does not exclude a plurality.
Furthermore, it should be further noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the figures, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application not directly mentioned herein.
It will be further understood that the terms "first," "second," and the like, are used herein to describe various information and should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application.
It should be noted that in different drawings, the same reference numerals indicate the same or substantially the same components.
In addition, the "front end" and "rear end" in the present application mean: when the ultrasonic machine tool is used for processing a workpiece, one end close to the processing surface of the workpiece is a front end, and the other end departing from the processing surface of the workpiece is a rear end. "axial" and "radial" refer to, respectively, without specific reference: the direction along the central axis of the rotating shaft assembly is axial, while the direction perpendicular and pointing to the central axis of the rotating shaft assembly is radial.
As shown in fig. 1 to 15, an embodiment of the present application provides an ultrasonic machine tool including: ultrasonic spindle 100 and ultrasonic tool shank 200.
Specifically, as shown in fig. 2, the ultrasonic spindle 100 includes: the ultrasonic wave transmission device comprises a main shaft shell 1, a rotating shaft component 2 and an ultrasonic wave wireless transmitting component 3010; the ultrasonic wireless transmitting component 3010 comprises a transmitting frame 3 and an ultrasonic wireless transmitting unit 4, the rotating shaft component 2 is rotatably arranged in the main shaft housing 1, the front end face of the rotating shaft component 2 is provided with a mounting hole 21, the transmitting frame 3 is arranged at the front side of the main shaft housing 1, and the "front side" means the position located in front of the spindle housing 1, the launcher 3 includes a transmitting part 31, the transmitting part 31 is in a non-full circular ring shape disposed around the central axis of the rotating shaft assembly 2, a first receiving groove 311 in a non-full circular ring shape disposed around the central axis of the rotating shaft assembly 2 is opened at the front end of the transmitting part 31, the first receiving groove 311 has an inner circumferential surface 3111 and an outer circumferential surface 3112 which are oppositely disposed from inside to outside in the radial direction, the ultrasonic wireless transmitting unit 4 is disposed in the first receiving groove 311, and the ultrasonic wireless transmitting unit 4 includes a transmitting ferrite 41 and a transmitting coil 42 housed in the transmitting ferrite 41.
As shown in fig. 3, the ultrasonic blade handle 200 includes: the ultrasonic scalpel comprises a scalpel handle body 10 and an ultrasonic wireless receiving assembly 3020; the rear end cooperation of handle of a knife body 10 is inserted and is located mounting hole 21, the periphery of stating handle of a knife body 10 is equipped with cutter clamping position 101, ultrasonic wave wireless receiving assembly 3020 includes receiving frame 20 and super ripples wireless receiving unit 30, the periphery that handle of a knife body 10 was located to receiving frame 20 cover is located cutter clamping position 101's front side position department, and receiving frame 20 locates the front side of transmitting part 31 relatively, receiving frame 20's rear end is offered and is used for setting up relatively and is the annular second holding tank 201 of circle around handle of a knife body 10 with first holding tank 311, ultrasonic wave wireless receiving unit 30 locates in second holding tank 201, be used for cooperation ultrasonic wave wireless transmitting unit 4 to realize wireless power transmission.
Based on the technical scheme, the whole emitting part 31 is in a non-full circular ring shape, the opening of the emitting part 31 forms a tool changing space, when different ultrasonic tool handles 200 or common tool handles are replaced on the ultrasonic spindle 100, the tool changing can be automatically carried out by using the same standard tool magazine, the tool magazine of the common machine tool and the ultrasonic machine tool is universal, and the cost is greatly reduced by realizing the universality of the tool magazine.
As shown in fig. 10, the central angle of the emitting portion 31 is an α radian, and it should be noted that the central angle of the emitting portion 31 in this embodiment specifically refers to an angle that the emitting portion 31 extends in the circumferential direction around the center of the circle, that is, an angle formed after the outermost positions in the circumferential direction of the two ends of the emitting portion 31 are connected to the center of the circle, and
Figure BDA0002768586990000081
the central angles of different numerical values can be usually taken by aiming at the knife handle structures of different models so as to meet the requirement of knife changing and ensure wireless connectionAnd (5) transmission requirements.
In addition, in the present application, more preferably,
Figure BDA0002768586990000082
not only can guarantee in the ultrasonic wave main shaft of most models, the tool magazine is held the tool changing with the card between the card sword position 101, prevents to take place to interfere between tool magazine and the emission frame 3 when automatic tool changing, and can optimize the size range of ultrasonic wave wireless transmitting unit 4 in week, satisfies the wireless transmission demand.
Illustratively, the emitting portion 31 may be one-fourth, one-third, or semicircular in shape as a whole; in addition, the central angle of the first receiving groove 311 is only slightly smaller than the emitting part 31.
Further, in order to ensure the total volume of the ultrasonic wireless transmitting unit 4 and avoid tool changing interference caused by the over-size of the transmitting part 31 in the radial direction, the axial depth of the first accommodating groove 311 is H mm, and H is greater than or equal to 1 and less than or equal to 35, which can be specifically referred to as shown in fig. 12.
In this embodiment, in order to realize effective conduction of the magnetic circuit, as shown in fig. 7-12, the emitting ferrite 41 is shaped to fit the first receiving groove 311, a first wire embedding groove 411 is formed on the front end surface of the emitting ferrite 41, an arc-shaped partition 412 is disposed in the first wire embedding groove 411, a first arc-shaped wall 413 is disposed on the inner side of the first wire embedding groove 411, and the partition 412 and the first arc-shaped wall 413 are concentrically disposed; the transmitting coil 42 is disposed in the first buried wire slot 411 around the partition 412. With this structure, the lines of magnetic induction generated by energizing the transmitting coil 42 are transmitted from the front end surface of the partition plate 412 to the ultrasonic wave wireless receiving unit 4, and are transmitted by the ultrasonic wave wireless receiving unit 4 and then flow back from the front end surface of the first arc-shaped wall 413.
In addition, in order to further improve the transmission effect and ensure the processing requirements, a second arc-shaped wall 414 is further arranged at a position where the periphery of the first wire embedding groove 411 is opposite to the partition plate 412, and the second arc-shaped wall 414 is concentrically arranged with the first arc-shaped wall 413. Illustratively, the radial distance between the baffle 412 and the first arcuate wall 413, and the radial distance between the baffle 412 and the second arcuate wall 414 remain equal.
On the basis, a convex transition wall 415 is connected between the end part of the first arc-shaped wall 413 and the end part of the second arc-shaped wall 414, and by arranging the convex transition wall 415, a yielding space can be correspondingly defined on the inner side of the convex transition wall, so that the transmitting coil 42 can be bent and wound at the positions of the two ends of the partition plate 412.
Corresponding to the above-described ultrasonic wireless transmission unit 4, the ultrasonic wireless reception unit 30 in the present embodiment includes: a receiving ferrite 301 and a receiving coil 302; specifically, as shown in fig. 7-9, the shape of the receiving ferrite 301 is adapted to the second accommodating groove 201, a second wire embedding groove 3011 which is annular and is arranged around the tool holder body 10 is formed in the rear end face of the receiving ferrite 301, an inner side wall 3012 and an outer side wall 3013 are arranged on the inner side and the outer side of the second wire embedding groove 3011, the receiving coil 302 is arranged in the second wire embedding groove 3011 around the inner side wall 3012, and the ultrasonic wireless receiving unit 30 with this structure is adapted to the ultrasonic wireless transmitting unit 4 in the foregoing structure, so that ultrasonic wireless power transmission can be realized.
Based on the above-mentioned structure of the ultrasonic wireless transmitting unit 4 and the ultrasonic wireless receiving unit 30, the magnetic induction lines generated after the transmitting coil 42 is energized point to the rear end face of the outer side wall 3013 of the receiving ferrite 301 through the front end face of the partition 412 of the transmitting ferrite 41, and then flow back to the front end face of the first arc-shaped wall 413 of the transmitting ferrite 41 through the rear end face of the inner side wall 3012 of the receiving ferrite 301, so as to form a magnetic loop and effectively realize the transmission of electric signals.
In the present application, and as particularly shown in FIG. 12, the radial thickness of the separator 412 is C1In mm, the first arcuate wall 413 has a radial thickness C2Mm, and C1And C2The value ranges of (1.5-10) are all preferred, the effective transmission area is ensured, and further the ultrasonic wireless transmitting unit 4 can generate enough excitation inductance, so that the transmission efficiency of ultrasonic wireless transmission is improved.
In addition, referring to fig. 7, 9 and 10, for convenience of installation, the launcher 3 further includes a first connecting portion 32, the first connecting portion 32 is connected to the outer side of the launching portion 31, a wire outlet 416 communicated with the first wire burying groove 411 is formed in the launching ferrite 41, a wire outlet channel 321 communicated with the wire outlet 416 is formed in the first connecting portion 32, two ends of the launching coil 42 are both led out through the wire outlet 416 and the wire outlet channel 321 in sequence, so that the launching coil 42 is electrically connected with a power supply, and a glue pouring groove 322 communicated with the wire outlet channel 321 and the first accommodating groove 311 is formed in the first connecting portion 32; after the transmitting ferrite 41 and the transmitting coil 42 are assembled, the sealant is filled into the sealant filling groove 322, and after the sealant fills the outlet channel 32 and the sealant filling groove 322, the sealant is injected into the first accommodating groove 311 and is introduced into the first wire embedding groove 411 through the outlet 416, so that air in the first accommodating groove 311 and the first wire embedding groove 411 can be discharged, and the generation of air holes is reduced.
Further, in the present application, as shown in fig. 10, the inner peripheral diameter of the emitting portion 31 is D1Mm, the volume of the first receiving groove 311 is V cubic mm, and the inner peripheral diameter of the first receiving groove 311 is D2Mm, the diameter of the outer circumference of the first receiving groove 311 is D3Mm, the inner diameter of the first receiving groove 311 refers to the diameter of the inner circumferential surface 3111, the outer diameter of the second receiving groove 312 refers to the diameter of the outer circumferential surface 3112 (as shown in fig. 10 and 11), the cross-sectional area of the single-turn wire constituting the transmitting coil 42 is S mm, the number of turns of the transmitting coil 42 is N, and the volume of the transmitting coil 42 is V1Cubic millimeter, emission ferrite 41 volume of V2Cubic millimeter, in order to ensure the machining performance while realizing automatic tool changing, the ultrasonic spindle 100 in the present application needs to satisfy the following functional relationship:
Figure BDA0002768586990000111
wherein N is more than or equal to 10 and less than or equal to 300, S is more than or equal to 0.02 and less than or equal to 2.6, and K is more than or equal to 11≤10，1＜K2≤3，0.4≤K3≤2，K1、K2And K3Is a correction factor.
When the above functional relationship is satisfied, firstly, the volume of the first accommodating groove 311 accommodating the ultrasonic wireless transmitting unit 4 can be adapted to the inner peripheral diameter and the circle center angle of the transmitting part 31, and the size of the inner peripheral diameter of the transmitting part 31 is adaptively changed along with the model of the ultrasonic knife handle 200, that is, the present application can optimally design the circle center angle of the transmitting part 31 and the volume of the first accommodating groove 311 according to the knife handles of different models; in addition, the ultrasonic wireless transmitting unit 4 can realize optimal configuration among the number of turns of the transmitting coil 42, the cross section area of the single-turn lead wire and the volume of the transmitting ferrite 41, and the transmitting ferrite 41 and the transmitting coil 42 are optimally configured after the central angle of the transmitting part 31 and the volume of the first accommodating groove 311 are determined, so that the stability and the reliability of electric signal transmission are ensured, and the processing performance is optimized to meet the processing requirement.
It should be noted that, the number of turns N of the transmitting coil 42 refers to the number of turns of the wire around the inner circumference of the first wire embedding slot 411, specifically, the number of turns N of the transmitting coil 42 refers to the number of turns of the wire around the partition 412; the lead can be a single core wire or a multi-core wire, for example, one lead consists of five core wires; in addition, the cross section of the wire can be circular, triangular, rectangular and the like, and can also be other irregular shapes, but the cross section area can be calculated according to the equivalent circular shape of the cross section of the wire, namely the wire diameter is d millimeters, namely S ═ pi (d/2)2。
The launching rack 3 in the application is preferably installed in an externally-hung mode, the launching rack 3 is connected with the installation arm 5, in particular, the installation arm 5 is connected with the first connection part 32, the launching rack 3 is connected with the outer side of the spindle shell 1 through the installation arm 5, the overall structure of a common spindle is not required to be changed, the launching rack 3 and the ultrasonic wireless transmitting unit 4 can be transformed into the ultrasonic spindle 100 only by hanging the launching rack 3 and the ultrasonic wireless transmitting unit 4 on the spindle shell 1 through the installation arm 5, the universality of the spindle can be improved, and the cost is low; as shown in fig. 1, 2, 4 and 5, the mounting arm 5 is usually connected to the front end surface of the spindle housing 1 to ensure stable and reliable mounting.
Specifically, be equipped with bearing 6 between the outside of the rotation axis subassembly 2 and the inboard of main shaft housing 1 in this application, front end housing 7 is installed to the front end of rotation axis subassembly 2, and front end housing 7 compresses tightly in the outer lane of bearing 6 from preceding backward, and the front end periphery of rotation axis subassembly 2 is equipped with clamping ring 8, and clamping ring 8 compresses tightly in the inner circle of bearing 6 from preceding backward, specifically as shown in fig. 2 and 6. Through setting up gland and clamping ring 8 respectively in order to support pressing bearing 6, can be convenient for assemble main shaft housing 1 to the rotation axis subassembly 2 outside stably.
In addition, in order to be suitable for the spindle and the working condition of heavy load and heavy cutting force, the outer periphery of the front end of the rotating shaft assembly 2 is also sleeved with a positioning ring 22, and the front end of the positioning ring 22 is provided with a positioning part 221; correspondingly, the outer periphery of the tool shank body 10 is provided with a positioning groove 102 which is open towards the rear, and the rear end of the positioning groove 102 extends to be communicated with the tool clamping position 101; when the ultrasonic knife handle 200 is assembled, the positioning part 221 and the positioning groove 102 are matched to realize circumferential positioning of the ultrasonic knife handle 200, which is specifically shown in fig. 4. Further, in order to realize good positive pressure sealing between the rotating component and the fixed component, a first gap 9 is left between the inner circumferential wall of the front end cover 7 and the outer circumferential wall of the pressing ring 8, a plurality of annular convex ribs 71 are axially arranged on the inner circumferential wall of the front end cover 7 at intervals, an annular first step surface 72 is arranged on the front end of the front end cover 7 along the inner circumferential wall thereof, a second step surface 222 matched with the first step surface 72 of the front end cover 7 is arranged on the rear end of the positioning ring 22 along the outer circumferential wall thereof, a labyrinth air passage 110 is formed between the first step surface 72 and the second step surface 222, the rear end of the labyrinth air passage 110 is communicated with the first gap 9, and the front end of the labyrinth air passage 110 is open, specifically as shown in fig. 6 and 13-15, dust, water and the like can be further prevented from entering from front to back; usually, the spindle housing 1 is provided with an air passage, which blows from the back to the front from the gap between the spindle housing 1 and the rotating shaft assembly 2, passes through the first gap 9, and finally blows forward through the labyrinth air passage 110.
In addition, in the present application, a second gap 300 is provided between the rear end surface of the ultrasonic wireless receiving unit 30 and the front end surface of the ultrasonic wireless transmitting unit 4; as shown in fig. 8, the width of the second gap 300 is L mm, and L is preferably (0.1-2.5), so that interference and collision between components in the assembling or using process can be avoided while a better transmission effect is ensured.
As shown in fig. 16 to 20, an ultrasonic machine tool according to another embodiment of the present application differs from the above-described embodiments only in that: the launcher 3 is mounted on the front end cap 7.
Specifically, the launcher 3 further includes a second connecting portion 33, the second connecting portion 33 is disposed at a rear side of the emitting portion 31, and the emitting portion 31 is connected to the front end surface of the front end cover 7 through the second connecting portion 33.
Preferably, the launcher 3 is integrally formed on the front end cover 7, that is, the launcher 3 is integrated on the front end cover 7 of the ultrasonic main shaft 100. And the launcher 3 can be detachably connected with the front end cover 7, such as by screw connection or other connection methods.
Specific embodiments of several different ultrasonic machine tools are shown below and each of the following embodiments satisfies the functional relationship described above: v2＝K1V1，
Figure BDA0002768586990000131
Figure BDA0002768586990000132
10≤N≤300，0.02≤S≤2.6，1≤K1≤10，1＜K2≤3，0.4≤K3≤2，K1、K2And K3Is a correction factor.
Example one
In the ultrasonic machine tool in the embodiment, the model of the ultrasonic tool shank 200 is BT30, and accordingly, the specific structural parameters of the emission frame 3 and the ultrasonic wireless emission unit 4 are as follows:
the central angle of the emitting portion 31 has an arc value α of 1.787, and the inner peripheral diameter of the emitting portion 31 has a value D1To 49, the volume V of the first receiving groove 311 is 17656.8, and the inner peripheral diameter D of the first receiving groove2Is 50.5, the peripheral diameter value D of the first accommodation groove 311387.8, the cross section of the single turn of wire constituting the transmitting coil 42 is circular and the wire diameter value d is 0.45, the number of turns N of the transmitting coil 42 is 77, and the volume value V of the transmitting ferrite 41210679.6, the axial depth H of the first receiving groove 311 is 16.8.
Example two
In the ultrasonic machine tool in the embodiment, the model of the ultrasonic tool shank 200 is BT40, and accordingly, the specific structural parameters of the emission frame 3 and the ultrasonic wireless emission unit 4 are as follows:
the central angle of the emitting portion 31 has an arc value α of 1.688, and the inner peripheral diameter of the emitting portion 31 has an inner peripheral diameter value D165, the volume value V of the first receiving groove is 22776.3, and the inner peripheral diameter value D of the first receiving groove 3112Is 67, the outer peripheral diameter value D of the first receiving groove 3113111.5, the cross section of the single turn of wire constituting the transmitting coil 42 is circular and the wire diameter value d is 0.5, the number of turns N of the transmitting coil 42 is 128, the volume value V of the transmitting ferrite 41213797.7, the axial depth H of the first receiving groove 311 is 15.
EXAMPLE III
In the ultrasonic machine tool in the embodiment, the model of the ultrasonic tool shank 200 is BT50, and accordingly, the specific structural parameters of the emission frame 3 and the ultrasonic wireless emission unit 4 are as follows:
the central angle of the emitting portion 31 has an arc value α of 1.981, and the inner peripheral diameter of the emitting portion 31 has a value D 1101, the volume V of the first receiving groove 311 is 28397.2, and the inner peripheral diameter D of the first receiving groove 3112104, the outer diameter value D of the first receiving groove 3113134, the cross section of the single turn of the wire constituting the transmitting coil 42 is circular and the wire diameter value d is 0.5, the number of turns N of the transmitting coil 42 is 128, the volume value V of the transmitting ferrite 41212472.5, the axial depth H of the first receiving groove 311 is 16.5.
Example four
In the ultrasonic machine tool in the embodiment, the model of the ultrasonic tool shank 200 is HSK-a63, and correspondingly, the specific structural parameters of the emission frame 3 and the ultrasonic wireless emission unit 4 are as follows:
the central angle of the emitting portion 31 has an arc value α of 1.976, and the inner peripheral diameter of the emitting portion 31 has a value D165 the volume value V of the first receiving groove 311 is 13155.4, the inner peripheral diameter value D of the first receiving groove 3112Is 66.5, the outer peripheral diameter value D of the first accommodation groove 3113102.4, the cross section of the single turn of the wire constituting the transmitting coil 42 is circular and the wire diameter value d is 0.5, the number of turns N of the transmitting coil 42 is 125, and the volume value V of the transmitting ferrite 4128925.2, the axis of the first receiving slot 311The depth-wise value H is 10.
EXAMPLE five
In the ultrasonic machine tool in the embodiment, the model of the ultrasonic tool shank 200 is HSK-a100, and correspondingly, the specific structural parameters of the emission frame 3 and the ultrasonic wireless emission unit 4 are as follows:
the central angle of the emitting portion 31 has an arc value α of 1.833 and the inner peripheral diameter of the emitting portion 31 has a value D 1100, the volume V of the first receiving groove 311 is 32285.0, and the inner peripheral diameter D of the first receiving groove 3112102, the outer diameter value D of the first receiving groove 3113147, the cross section of the single turn of the wire constituting the transmitting coil 42 is circular and the wire diameter value d is 0.5, the number of turns N of the transmitting coil 42 is 135, and the volume value V of the transmitting ferrite 41212294.0, the axial depth H of the first receiving groove 311 is 13.2.
In order to verify the processing performance of the ultrasonic machine tool in each of the above embodiments, the maximum amplitude that can be achieved by the ultrasonic machine tool is tested and compared with the ultrasonic machine tool of the corresponding full-ring type ultrasonic wireless transmitting assembly in the prior art, as shown in tables 1 to 5, the test results show that: under the condition of the same power supply, when the central angles of the transmitting parts 31 are all smaller than 2 pi/3 radian, that is, when the circumferential transmitting range of the ultrasonic wireless transmitting unit is less than 1/3 of the whole ring, the maximum amplitude which can be achieved by the ultrasonic machine tool in the embodiments of the present application is very small compared with the ultrasonic machine tool which transmits the ultrasonic wave in the whole ring, and can be maintained at least to about 70% of the whole ring transmitting performance, so that the processing requirements for processing most of workpieces can be met.
It should be noted that, in the present invention, the amplitude values in tables 1 to 5 are peak-to-peak values, i.e., the difference between the positive peak value and the negative peak value of the amplitude in one cycle.
Figure BDA0002768586990000151
Figure BDA0002768586990000161
Table 1 results of amplitude test of ultrasonic machine tool in the first embodiment and ultrasonic machine tool of prior art corresponding thereto
Figure BDA0002768586990000162
Table 2 results of amplitude test of the ultrasonic machine tool of the second embodiment and the ultrasonic machine tool of the related art corresponding thereto
Figure BDA0002768586990000163
Figure BDA0002768586990000171
Table 3 results of amplitude test of the ultrasonic machine tool of example three and the ultrasonic machine tool of the related art corresponding thereto
Figure BDA0002768586990000172
Table 4 results of amplitude test of the ultrasonic machine tool of the fourth embodiment and the ultrasonic machine tool of the related art corresponding thereto
Figure BDA0002768586990000173
Figure BDA0002768586990000181
Table 5 results of amplitude test of the ultrasonic machine tool of example five and the ultrasonic machine tool of the related art corresponding thereto
In summary, in the ultrasonic spindle 100 in the embodiment of the present invention, on one hand, by replacing the conventional full-ring type ultrasonic wireless transmission assembly with a non-full-ring type ultrasonic wireless transmission assembly, after the ultrasonic tool holder or the common tool holder is mounted on the ultrasonic spindle 100 in a matching manner, a tool changing space can be reserved at the tool clamping position of the tool holder body, so that automatic tool changing can be achieved, tool magazine universality between the common machine tool and the ultrasonic machine tool can be achieved, and cost is greatly reduced by achieving the universality of the tool magazine of the machine tool;
on the other hand, this application makes it satisfy following functional relation through optimal design launcher and ultrasonic wave wireless transmitting unit:
Figure BDA0002768586990000182
wherein N is more than or equal to 10 and less than or equal to 300, S is more than or equal to 0.02 and less than or equal to 2.6, and K is more than or equal to 11≤10，1＜K2≤3，0.4≤K3≤2，K1、K2And K3Is a correction factor;
wherein, alpha is the central angle camber value of the emitting part, D1Is the inner peripheral diameter value of the transmitting part, V is the volume value of the first accommodating groove for accommodating the ultrasonic wireless transmitting unit, D2Is the inner peripheral diameter value of the first accommodation groove, D3Is the peripheral diameter value of the first accommodating groove, S is the cross-sectional area value of a single turn of wire forming the transmitting coil, N is the number of turns of the transmitting coil, and V is1Is the volume value of the transmitting coil, V2Is the volume value of the emitting ferrite; when satisfying above-mentioned relational expression, the realization is to the central angle of transmitting part, the volume of the first holding tank of holding ultrasonic wave wireless transmitting unit and the interior circumference diameter looks adaptation of transmitting part, and the interior circumference diameter size of transmitting part takes place adaptability along with the model of ultrasonic wave handle of a knife and changes, this application also can carry out optimal design according to the handle of a knife of different models to the central angle of transmitting part and the volume of first holding tank, in addition this application is after confirming the volume of first holding tank, still with the transmitting coil number of turns in the ultrasonic wave wireless transmitting unit, the cross-sectional area of single turn wire, realize optimal configuration between the volume of transmission ferrite, thereby can improve the stability of electricity transmission, and optimize the processing performance, satisfy the processing demand.
This written description discloses the application with reference to the drawings, and also enables one skilled in the art to practice the application, including making and using any devices or systems, using suitable materials, and using any incorporated methods. The scope of the present application is defined by the claims and includes other examples that occur to those skilled in the art. Such other examples are to be considered within the scope of the claims as long as they include structural elements that do not differ from the literal language of the claims, or that they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims (22)

1. An ultrasonic spindle, comprising:
a spindle housing;
the rotating shaft assembly is rotatably arranged in the main shaft shell, and a mounting hole is formed in the front end face of the rotating shaft assembly;
the launcher is arranged on the front side of the spindle shell and comprises a launching part, the launching part is in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly, and a first accommodating groove in a non-full-circular ring shape and is arranged around the central axis of the rotating shaft assembly is formed in the front end face of the launching part; and
the ultrasonic wireless transmitting unit is arranged in the first accommodating groove and comprises a transmitting ferrite and a transmitting coil accommodated in the transmitting ferrite.
Wherein the central angle of the emitting part is alpha radian,
Figure FDA0002768586980000011
2. an ultrasonic spindle according to claim 1,
Figure FDA0002768586980000012
3. the ultrasonic spindle of claim 1, wherein the first receiving groove has an axial depth of H mm, 1 ≦ H ≦ 35.
4. The ultrasonic spindle according to claim 1, wherein the transmitting ferrite has a shape adapted to the first receiving groove, a first wire embedding groove is formed in a front end surface of the transmitting ferrite, an arc-shaped partition plate is disposed in the first wire embedding groove, a first arc-shaped wall is disposed inside the first wire embedding groove, and the partition plate and the first arc-shaped wall are concentrically disposed;
the transmitting coil is arranged in the first wire embedding groove in a surrounding mode of the partition plate.
5. The ultrasonic spindle of claim 4, wherein a second arc-shaped wall is further provided at a position opposite to the partition outside the first wire embedding groove.
6. An ultrasonic spindle according to claim 5 in which a convex transition wall is connected between the ends of the first and second arcuate walls.
7. An ultrasonic spindle according to claim 5 in which the radial thickness of the baffle and the radial thickness of the first arcuate wall are both (0.5 to 10) mm.
8. The ultrasonic spindle according to claim 4, wherein the launcher comprises a first connecting portion, the first connecting portion is connected to an outer side of the launching portion, the launching ferrite has a wire outlet connected to the first buried wire groove, the first connecting portion has a wire outlet channel connected to the wire outlet, and the launcher has a glue pouring groove connected to the wire outlet channel and the first holding groove.
9. The ultrasonic spindle of claim 1, further comprising a mounting arm through which the launcher is attached to the spindle housing.
10. An ultrasonic spindle according to claim 1 in which a front end cap is mounted to the front end of the spindle housing.
11. An ultrasonic spindle according to claim 10 in which the launcher is attached to the front end cap.
12. An ultrasonic spindle according to claim 11 in which the launcher comprises a second connection by which the launcher is connected to the front end face of the front end cap.
13. The ultrasonic spindle according to claim 10, wherein a bearing is disposed between an outer side of the rotating shaft assembly and an inner side of the spindle housing, the front end cover is pressed against an outer ring of the bearing from front to back, a pressing ring is sleeved on an outer periphery of a front end of the rotating shaft assembly, and the pressing ring is pressed against an inner ring of the bearing from front to back.
14. The ultrasonic spindle according to claim 13, wherein a first gap is left between the inner peripheral wall of the front end cover and the outer peripheral wall of the pressure ring, and a plurality of annular ribs are axially spaced from the inner peripheral wall of the front end cover.
15. The ultrasonic spindle according to claim 13, wherein a positioning ring is provided around the rotating shaft assembly on the front side of the pressing ring, and a positioning portion is provided at the front end of the positioning ring.
16. An ultrasonic spindle according to claim 15, wherein the front end of the front end cap defines a first annular step surface along an inner circumference thereof, the rear end of the positioning ring defines a second annular step surface along an outer circumference thereof, the second annular step surface being engaged with the first annular step surface, and a labyrinth air passage is defined between the first annular step surface and the second annular step surface.
17. An ultrasonic spindle according to any one of claims 1 to 16 in which the emitting portion has an inner circumference diameter D1The first accommodating groove has a volume of V cubic millimeters and an inner peripheral diameter of D2Millimeter, the peripheral diameter of the first accommodating groove is D3Millimeter, the cross-sectional area of a single turn of wire constituting the transmitting coil is S square millimeter, the number of turns of the transmitting coil is N, and the volume of the transmitting coil is V1Cubic millimeter, volume of the emitting ferrite is V2Cubic millimeter, the above parameter values satisfy the following functional relationship:
Figure FDA0002768586980000031
wherein N is more than or equal to 10 and less than or equal to 300, S is more than or equal to 0.02 and less than or equal to 2.6, and K is more than or equal to 11≤10，1＜K2≤3，0.4≤K3≤2，K1、K2And K3Is a correction factor.
18. An ultrasonic tool shank for use with the ultrasonic spindle of any one of claims 1-17, comprising:
the rear end of the knife handle body is used for being inserted into the mounting hole in a matched mode, a knife clamping position and a receiving frame are arranged on the periphery of the knife handle body, and a second accommodating groove which is annular and surrounds the knife handle body is formed in the rear end of the receiving frame; and
and the ultrasonic wireless receiving unit is arranged in the second accommodating groove and is used for being matched with the ultrasonic wireless transmitting unit to realize ultrasonic wireless power transmission.
19. The ultrasonic knife handle of claim 18, wherein the ultrasonic wireless receiving unit comprises a receiving ferrite and a receiving coil;
the shape of receiving the ferrite with second holding tank looks adaptation, the rear end face of receiving the ferrite is seted up and is the annular second and buries the wire casing, the inside and outside both sides of second bury the wire casing are equipped with inside wall and lateral wall relatively, receiving coil encircles the inside wall is located in the second buries the wire casing.
20. An ultrasonic scalpel handle as defined in claim 18 wherein the handle body has rearwardly opening locating slots in its periphery.
21. An ultrasonic machine tool, comprising:
the ultrasonic spindle of any one of claims 1-17; and
the ultrasonic knife handle of any of claims 18-20;
the rear end of the knife handle body is inserted into the mounting hole in a matched mode, the receiving frame is arranged on the front side of the transmitting part relatively, the second containing groove is arranged opposite to the first containing groove, and a second gap is formed between the rear end face of the ultrasonic wireless receiving unit and the front end face of the ultrasonic wireless transmitting unit.
22. The ultrasonic machine tool of claim 21, wherein the width of the second gap is (0.1-2.5) mm.
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