Ultrasonic machining apparatus provided with upper and lower rings, ultrasonic main shaft, ultrasonic machine tool, and ultrasonic drill

Abstract

The present invention relates to the technical field of ultrasonic machining, in particular to an ultrasonic machining apparatus provided with upper and lower rings, an ultrasonic main shaft, an ultrasonic machine tool, and an ultrasonic drill, the ultrasonic machining apparatus provided with upper and lower rings comprising a cutter body, a wireless transmission mechanism, and an ultrasonic transducer. The wireless transmission mechanism comprises a transmitting unit and a receiving unit. When structural parameters of the transmitting unit and the receiving unit can meet a preset relational expression with an introduced peak current and an apparent power, the apparent power and the introduced peak current can cooperate with operating structural parameters and properties of the transmitting unit and the receiving unit, lowering a rise in temperature of the transmitting unit and the receiving unit in the operating state, improving the efficiency of wireless transmission and the stability of continuous operation of a device, and enhancing the conversion of energy.

Description

Ultrasonic processing device for upper and lower rings, ultrasonic spindle, ultrasonic machine tool and ultrasonic drill Technical Field

[0001] The present invention relates to the technical field of ultrasonic machining, and in particular to an upper and lower ring ultrasonic machining device, an ultrasonic spindle, an ultrasonic machine tool and an ultrasonic drill. Background Art

[0002] Advanced materials, such as functional ceramics, optical crystals, high-strength and toughness alloys, and ceramic-based composites, possess excellent mechanical, physical, and chemical properties. However, these materials are also typically difficult to machine. During the cutting process, they present bottlenecks such as easy wear of cutting tools, short tool life, poor machining quality, and low machining efficiency, which are difficult to fully address using traditional machining methods.

[0003] Ultrasonic machining is a machining method that applies micron-level ultrasonic frequency vibrations to a tool or workpiece, controlling the frequency, amplitude, and direction of the vibrations to produce periodic, high-frequency separations between the tool and the workpiece. Extensive research and practice have demonstrated that, compared to traditional machining, ultrasonic machining offers significant advantages in suppressing microcracks, reducing cutting forces, extending tool life, minimizing workpiece burrs, and improving machining efficiency when machining difficult-to-machine metals, hard and brittle materials, and new composite materials.

[0004] Among them, the ultrasonic machining device is a specific application of ultrasonic machining technology. It can be considered as adding an ultrasonic transducer to an ordinary tool to enable the tool to generate high-frequency vibration during the machining process and improve the machining efficiency.

[0005] The existing ultrasonic machining device has an ultrasonic wireless transmission mechanism, which includes a wireless transmitting unit and a wireless receiving unit. The wireless transmitting unit and the wireless receiving unit are arranged opposite to each other along the axial direction of the machining tool. When power is supplied to the wireless transmitting unit, the magnetic flux lines of the wireless receiving unit and the wireless transmitting unit communicate with each other, and the magnetic flux lines circulate along the axial direction of the machining tool, and the wireless receiving unit supplies power to the ultrasonic transducer.

[0006] However, existing ultrasonic machining devices are not yet able to link the structural parameters of the ultrasonic wireless transmission mechanism with its peak current and apparent power under working conditions. Therefore, during operation, the equipment is prone to the temperature of the ultrasonic wireless transmission mechanism rising significantly over time due to the inability of the apparent power and peak current to match the structural parameters of the ultrasonic wireless transmission mechanism, thereby further affecting the working stability, transmission efficiency and service life of the ultrasonic wireless transmission mechanism. Summary of the Invention

[0007] The purpose of the present invention is to provide an upper and lower ring ultrasonic processing device, an ultrasonic spindle, an ultrasonic machine tool and an ultrasonic drill that can help improve working stability and transmission efficiency, reduce temperature rise and extend service life.

[0008] In order to achieve the above-mentioned object, the present invention provides an upper and lower ring ultrasonic machining device, comprising:

[0009] A blade body, the rear end of which is used to connect to the rotary output device, and the front end of which is provided with a mounting cavity;

[0010] a wireless transmission mechanism, the wireless transmission mechanism comprising a transmitting unit and a receiving unit, the transmitting unit being disposed on an outer peripheral side of the blade body, the receiving unit being disposed on an outer peripheral side of the blade body, the transmitting unit and the receiving unit being disposed opposite each other along the axial direction of the blade body and separated by an air gap, the transmitting unit comprising a transmitting coil and a transmitting magnet for generating a magnetic field based on current in the transmitting coil, and the receiving unit comprising a receiving coil and a receiving magnet for receiving the magnetic field generated by the transmitting unit; and

[0011] an ultrasonic transducer, the ultrasonic transducer being disposed in the mounting cavity and electrically connected to the receiving unit;

[0012] The frequency of the electrical signal input to the receiving unit is f Hz, and the air gap magnetic resistance of the wireless transmission mechanism is R δ Henry -1 , the magnetic resistance of the transmitting unit is R 发射 Henry -1 , the magnetic resistance of the receiving unit is R 接收 Henry -1 ;

[0013] Among them, the apparent power of the transmitting unit is Q 发射 volt-ampere, the peak current passed into the emission unit is I 发射 The number of turns of the transmitting coil is N 发射 , then the above parameters satisfy the relationship:

[0014] The number of turns of the receiving coil is N 接收 , the apparent power of the receiving unit is Q 接收 volt-ampere, the peak current passed into the receiving unit is I 接收 If , the above parameters satisfy the relationship:

[0015] K1 is the correction coefficient, 0.5≤K1≤1.5, 2≤N 接收 ≤240, 2≤N 发射 ≤240.

[0016] In some embodiments of the present invention, the angle at which the emitting unit is arranged along the outer circumference of the blade body is θ.

[0017] In some embodiments of the present invention, θ=2π, the transmitting magnet includes a first annular bottom plate, a first annular inner plate, and a first annular outer plate, the first annular inner plate being connected to the inner side of the first annular bottom plate, the first annular outer plate being connected to the outer side of the first annular bottom plate, a first wire-embedding groove opening toward the receiving unit is formed between the first annular bottom plate, the first annular inner plate, and the first annular outer plate, the transmitting coil is arranged around the first annular inner plate along the circumference of the blade body, and the transmitting coil is accommodated in the first wire-embedding groove; wherein, the thickness of the first annular bottom plate is H3 mm, the thickness of the first annular inner plate is b3 mm, the thickness of the first annular outer plate is b4 mm, the length of the transmitting magnet extending along the axial direction of the blade body is H4 mm, the inner diameter of the first annular inner plate is D3 mm, and the outer diameter of the first annular outer plate is D4 mm;

[0018] The receiving magnet includes a second annular bottom plate, a second annular inner plate and a second annular outer plate, the second annular inner plate is connected to the inner edge of the second annular bottom plate, the second annular outer plate is connected to the outer edge of the second annular bottom plate, and a second wire-embedding groove with an opening facing the transmitting unit is formed between the second annular bottom plate, the second annular inner plate and the second annular outer plate, the receiving coil is arranged around the second annular inner plate along the circumference of the blade body, and the receiving coil is accommodated in the second wire-embedding groove; wherein, the thickness of the second annular bottom plate is H1 mm, the thickness of the second annular inner plate is b1 mm, the thickness of the second annular outer plate is b2 mm, the length of the receiving magnet extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate is D1 mm, and the outer diameter of the second annular outer plate is D2 mm;

[0019] The relative magnetic permeabilities of the transmitting magnet and the receiving magnet are both u, the vacuum magnetic permeability is u0 Henry / m, the magnetic path area of ​​the second annular inner plate is S1, and the magnetic path area of ​​the second annular outer plate is S2. The relationship between S1 and S2 and the above parameters is as follows:

[0020] R1 is the magnetic resistance of the second annular inner plate, R2 is the magnetic resistance of the second annular outer plate, R3 is the magnetic resistance of the second annular bottom plate, and the magnetic resistance R of the receiving unit is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3

[0021] The magnetic circuit area of ​​the first annular inner plate is S3, and the magnetic circuit area of ​​the first annular outer plate is S4. The relationship between S3 and S4 and the above parameters is as follows:

[0022] R4 is the magnetic resistance of the first annular inner plate, R5 is the magnetic resistance of the first annular outer plate, R6 is the magnetic resistance of the first annular bottom plate, and the magnetic resistance of the transmitting unit R 发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6.

[0023] In some embodiments of the present invention, the air gap between the second annular inner plate and the first annular inner plate has an equivalent magnetic circuit area of ​​S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate and the first annular outer plate is S δ2 , the vacuum permeability is u0 Henry / m, R δ1 is the air gap magnetic resistance between the second annular inner plate and the first annular inner plate, R δ2 is the air gap magnetic resistance between the second annular outer plate and the first annular outer plate, F1, F2, F3 and F4 are all edge flux coefficients, and the width of the air gap is δ mm;

[0024] When b1=b3, then:

[0025] When b2=b4, then:

[0026] When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then:

[0027] When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then: R δ =K2×(R δ1 +R δ2 ) Where K2 is the magnetic resistance correction coefficient, 0.2≤K2≤3.

[0028] In some embodiments of the present invention, The transmitting magnet includes an arc-shaped bottom plate, an arc-shaped inner plate and an arc-shaped outer plate, the arc-shaped inner plate is connected to the inner side of the arc-shaped bottom plate, the arc-shaped outer plate is connected to the outer side of the arc-shaped bottom plate, the arc-shaped bottom plate, the arc-shaped outer plate and the arc-shaped inner plate are concentrically arranged, and a first buried wire groove with an opening facing the receiving unit is formed between the arc-shaped bottom plate, the arc-shaped inner plate and the arc-shaped outer plate; wherein the thickness of the arc-shaped bottom plate is H3 mm, the thickness of the arc-shaped inner plate is b3 mm, the thickness of the arc-shaped outer plate is b4 mm, the length of the transmitting magnet extending along the axial direction of the blade body is H4 mm, the inner diameter of the arc-shaped inner plate is D3 mm, the outer diameter of the arc-shaped outer plate is D4 mm, and the transmitting coil is arranged around the arc-shaped bottom plate or the arc-shaped outer plate along the circumference of the blade body;

[0029] The receiving magnet includes a second annular bottom plate, a second annular inner plate and a second annular outer plate, the second annular inner plate is connected to the inner side edge of the second annular bottom plate, the second annular outer plate is connected to the outer side edge of the second annular bottom plate, and a second wire embedding groove with an opening facing the transmitting unit is formed between the second annular bottom plate, the second annular inner plate and the second annular outer plate; wherein, the thickness of the second annular bottom plate is H1 mm, the thickness of the second annular inner plate is b1 mm, the thickness of the second annular outer plate is b2 mm, the length of the receiving magnet extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate is D1 mm, the outer diameter of the second annular outer plate is D2 mm, and the receiving coil is arranged around the second annular inner plate along the circumference of the blade body;

[0030] The relative magnetic permeabilities of the transmitting magnet and the receiving magnet are both u, the vacuum magnetic permeability is u0 Henry / m, the magnetic path area of ​​the second annular inner plate is S1, and the magnetic path area of ​​the second annular outer plate is S2. The relationship between S1 and S2 and the above parameters is as follows:

[0031] R1 is the magnetic resistance of the second annular inner plate, R2 is the magnetic resistance of the second annular outer plate, R3 is the magnetic resistance of the second annular bottom plate, and the magnetic resistance R of the receiving unit is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3

[0032] The magnetic circuit area of ​​the arc-shaped inner plate is S3, and the magnetic circuit area of ​​the arc-shaped outer plate is S4. The relationship between S3, S4 and the above parameters is as follows:

[0033] R4 is the magnetic resistance of the arc inner plate, R5 is the magnetic resistance of the arc outer plate, R6 is the magnetic resistance of the arc bottom plate, and the magnetic resistance of the transmitting unit R发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6.

[0034] In some embodiments of the present invention, the air gap between the second annular inner plate and the arc-shaped inner plate has an equivalent magnetic circuit area of ​​S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate and the arc-shaped outer plate is S δ2 , the vacuum permeability is u0 Henry / m, R δ1 is the air gap magnetic resistance between the second annular inner plate and the arc-shaped inner plate, R δ2 is the air gap magnetic resistance between the second annular outer plate and the arc-shaped outer plate, F1, F2, F3 and F4 are all edge flux coefficients, and the width of the air gap is δ mm;

[0035] When b1=b3, then:

[0036] When b2=b4, then:

[0037] When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then:

[0038] When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then: R δ =K2×(R δ1 +R δ2 )

[0039] Wherein, K2 is the magnetic resistance correction coefficient, 0.2≤K2≤3.

[0040] In some embodiments of the present invention, a launching frame and a receiving frame are further included, and the launching frame and the receiving frame are arranged opposite to each other along the axial direction of the blade body. A first accommodating groove is provided on one end face of the launching frame facing the receiving frame, and a second accommodating groove is provided on one end face of the receiving frame facing the launching frame. The launching unit is accommodated in the first accommodating groove, and the receiving unit is accommodated in the second accommodating groove. The outer peripheral surface of the blade body is provided with a limiting convex ring protruding along its radial direction, and the receiving frame is sleeved and fixed on the outer periphery of the blade body and abuts against the rear end face of the limiting convex ring.

[0041] In some embodiments of the present invention, the width of the air gap is δ mm, 0.1≤δ≤3.

[0042] In some embodiments of the present invention, a variable amplitude rod is further included, and the ultrasonic transducer includes a piezoelectric vibrator, a screw and a back cover. The screw is arranged in the mounting cavity and extends along the axial direction of the blade body. The rear end of the variable amplitude rod is fixedly connected to the screw, and the piezoelectric vibrator is sleeved on the screw. The rear end face of the variable amplitude rod protrudes from the outer peripheral surface of the screw along the radial direction of the screw. The back cover is threadedly connected to the screw and cooperates with the rear end face of the variable amplitude rod to limit the piezoelectric vibrator.

[0043] In some embodiments of the present invention, a collet and a nut are further included for being sleeved on the outer periphery of the processing tool. The front end of the amplitude changing rod is provided with a socket extending toward the rear end. The inner circumference of the socket is conical with a diameter gradually decreasing from front to back. The collet can be inserted into the socket in conjunction with the processing tool. The nut can be threadedly connected to the amplitude changing rod and press against the collet to lock the processing tool.

[0044] In some embodiments of the present invention, the collet includes a conical barrel section adapted to the insertion hole, and the collet has a plurality of first deformation grooves spaced apart along its circumference, wherein the first deformation grooves extend to or through the conical barrel section;

[0045] The first deformation groove connects the outer side surface and the inner side surface of the collet. The first deformation groove extends from the front end surface of the collet along the axial direction of the collet backward through the conical cylinder section and extends toward the rear end surface of the collet. There is a first gap between the rear groove surface of the first deformation groove and the rear end surface of the collet.

[0046] In some embodiments of the present invention, the collet has a plurality of second deformation grooves spaced apart along its circumference, the second deformation grooves extending to or extending through the conical cylinder section, and the second deformation grooves are spaced apart from and staggered with the first deformation grooves;

[0047] A front groove surface of the second deformation groove has a second interval with the front end surface of the collet, and the second deformation groove extends and passes through the rear end surface of the collet.

[0048] In some embodiments of the present invention, the transmitting magnet is made of any one of ferrite, neodymium iron boron, high-frequency ceramic material, powder metallurgy material, amorphous and nanocrystalline alloy, and cobalt iron; the receiving magnet is made of any one of ferrite, neodymium iron boron, high-frequency ceramic material, powder metallurgy material, amorphous and nanocrystalline alloy, and cobalt iron.

[0049] The present invention also provides an ultrasonic spindle, comprising a first rotation output unit, a machining tool and the above-mentioned upper and lower ring ultrasonic machining device, the rear end of the tool body being assembled on the first rotation output unit, and the machining tool being assembled on the ultrasonic transducer.

[0050] The present invention also provides an ultrasonic machine tool, comprising a machine tool body and the ultrasonic spindle mentioned above, wherein the ultrasonic spindle is mounted on the machine tool body.

[0051] The present invention also provides an ultrasonic drill, comprising a housing, a second rotary output unit, a machining tool, a bearing, and the above-mentioned upper and lower ring ultrasonic machining devices, wherein the front end face of the housing is provided with a rearwardly extending accommodating cavity, the rear end of the cutter body is accommodated in the accommodating cavity and connected to the output end of the second rotary output unit, and the cutter body is connected to the housing through the bearing, the transmitting unit is arranged in the accommodating cavity and connected to the housing, the receiving unit is arranged in the accommodating cavity and connected to the cutter body, and the machining tool is connected to the ultrasonic transducer.

[0052] The implementation of the embodiments of the present invention has the following technical effects:

[0053] The upper and lower ring ultrasonic machining device provided by the present invention includes a cutter body, a wireless transmission mechanism and an ultrasonic transducer, wherein the rear end of the cutter body can be connected to a rotation output device, the receiving unit of the wireless transmission mechanism is connected to the cutter body, and the transmitting unit is connected to the rotation output device or other external equipment. The transmitting unit and the receiving unit are arranged relative to each other along the axial direction of the cutter body and are separated by an air gap. In this way, when the rotation output device drives the cutter body to rotate, the receiving unit can rotate relative to the transmitting unit. At the same time, the receiving unit and the transmitting unit can transmit electrical energy through magnetic induction, so that the receiving unit can provide electrical energy to drive the ultrasonic transducer to vibrate, so that when the machining tool is connected to the upper and lower ring ultrasonic machining device, it can generate vibration while rotating, thereby improving the machining effect and the applicable scope of the machining;

[0054] Furthermore, the structural parameters of the transmitting unit and the receiving unit are based on the relationship:

[0055] A reasonable design is carried out so that the peak current and apparent power passed through the transmitting unit and the receiving unit in the working state can be coordinated with the structural parameters and performance of the transmitting unit and the receiving unit, thereby reducing the temperature rise of the wireless transmission mechanism in the working state and improving the efficiency of wireless transmission and the stability of continuous operation of the equipment; further, based on reasonable processing requirements, the increase in amplitude can be basically consistent with the increase in apparent power, which can help avoid the conversion of energy into heat consumption and improve the energy conversion rate.

[0056] The ultrasonic spindle, ultrasonic machine tool and ultrasonic drill provided by the present invention, which have the upper and lower ring ultrasonic processing devices, also have the effects of low temperature rise during operation and high continuous working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The present invention will be described in more detail below with the aid of the accompanying drawings. Regardless of a specific combination of technical features, the technical features shown in the drawings and / or described below are generally technical features of the present invention and improve the present invention accordingly.

[0058] It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

[0059] FIG1 is a schematic structural diagram of a preferred embodiment 1 of the present invention;

[0060] FIG2 is a front view of a partial structure of the embodiment shown in FIG1 ;

[0061] Figure 3 is a cross-sectional view of the section Ⅰ-Ⅰ in Figure 2;

[0062] FIG4 is an enlarged schematic diagram of point B in FIG3 ;

[0063] FIG5 is a cross-sectional view of the transmitting ferrite and the receiving ferrite of FIG3 along the front-to-back direction;

[0064] FIG6 is a schematic perspective view of a partial structure of the embodiment shown in FIG1 ;

[0065] FIG7 is an exploded view of a local structure of the embodiment shown in FIG1 ;

[0066] Figure 8 is a schematic structural diagram of a collet;

[0067] FIG9 is a schematic structural diagram of a preferred embodiment 2 of the present invention;

[0068] FIG10 is a front view of a partial structure of the embodiment shown in FIG9;

[0069] Figure 11 is a cross-sectional view of the II-II position in Figure 10;

[0070] FIG12 is an enlarged schematic diagram of point C in FIG11;

[0071] FIG13 is a schematic structural diagram of the transmitting ferrite and the receiving ferrite of the embodiment shown in FIG9;

[0072] FIG14 is a schematic diagram of the planar structure of the transmitting ferrite and the receiving ferrite of the embodiment shown in FIG9;

[0073] FIG15 is a cross-sectional view of FIG14 at point III-III;

[0074] FIG16 is a schematic diagram of the planar structure of the emitting ferrite of FIG13;

[0075] FIG17 is a cross-sectional view of a preferred embodiment 4 of the present invention;

[0076] FIG18 is an enlarged schematic diagram of point A in FIG17 .

[0077] Explanation of the accompanying symbols: 100, ultrasonic spindle, 110, first rotation output unit, 111, end cover, 112, bracket; 200, ultrasonic drill, 210, housing, 211, accommodating chamber, 220, second rotation output unit, 221, gripping handle, 230, bearing; 10, ultrasonic machining device; 20, machining tool; 1, tool body, 11, mounting chamber, 12, limiting convex ring, 2, ultrasonic transducer, 21, piezoelectric vibrator, 22, screw, 23. Back cover, 24. Amplitude transformer, 241. Jack, 3. Wireless transmission mechanism, 31. Transmitting unit, 311. Transmitting coil, 312. Transmitting ferrite, 312a. First annular bottom plate, 312b. First annular inner plate, 312c. First annular outer plate, 312d. First buried wire groove, 312e. Arc bottom plate, 312f. Arc inner plate, 312g. Arc outer plate, 32. Receiving unit, 321. Receiving line Ring, 322, receiving ferrite, 322a, second annular bottom plate, 322b, second annular inner plate, 322c, second annular outer plate, 322d, second buried wire groove, 33, launching frame, 331, first accommodating groove, 34, receiving frame, 341, second accommodating groove, 4, air gap spacer, 5, collet, 51, conical cylinder section, 52, first deformation groove, 53, second deformation groove, 54, first interval, 55, second interval, 6, nut. DETAILED DESCRIPTION

[0078] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0079] First, it should be noted that the directions such as top, bottom, upward, and downward mentioned in this document are defined relative to the directions in the various drawings. They are relative concepts and can therefore change depending on their different locations and different practical conditions. Therefore, these or other directions should not be understood as restrictive terms. At the same time, the term "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude the plurality.

[0080] In addition, it should be pointed out that any single technical feature described or implied in the embodiments of this document, or any single technical feature shown or implied in the accompanying drawings, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present invention that are not directly mentioned in this document.

[0081] In addition, it should be understood that, while the terms "first," "second," etc., are used herein to describe various types of information, such information should not be limited to these terms; these terms are merely used to distinguish information of the same type from one another. For example, "first" information could also be referred to as "second" information, and similarly, "second" information could also be referred to as "first" information without departing from the scope of the present invention.

[0082] Example 1:

[0083] 1, 2, and 3, one embodiment of the present invention provides an upper and lower ring ultrasonic machining device (hereinafter referred to as ultrasonic machining device 10), comprising a blade body 1, an ultrasonic transducer 2, and a wireless transmission mechanism 3. The rear end of the blade body 1 is mounted on a first rotation output unit 110 and rotates synchronously with the first rotation output unit 110. Thus, the first rotation output unit 110, serving as the rotation output device of this embodiment, is connected to the blade body 1 and outputs torque.

[0084] Among them, the wireless transmission mechanism 3 is wound around the outer peripheral side of the blade body 1. Specifically, as shown in Figures 3 and 4, the wireless transmission mechanism 3 in this embodiment includes a transmitting unit 31 and a receiving unit 32. The transmitting unit 31 is arranged on the outer peripheral side of the blade body 1, and the receiving unit 32 is arranged on the outer peripheral side of the blade body 1. The transmitting unit 31 and the receiving unit 32 are arranged opposite to each other along the axial direction of the blade body 1 and form an air gap 4. The transmitting unit 31 includes a transmitting coil 311 and a transmitting magnet that generates a magnetic field based on the current of the transmitting coil 311. The receiving unit 32 includes a receiving coil 321 and a receiving magnet for receiving the magnetic field generated by the transmitting unit 31.

[0085] In different embodiments, the transmitting magnet can be made of any one of ferrite, neodymium iron boron, high-frequency ceramic materials, powder metallurgy materials, amorphous and nanocrystalline alloys, and cobalt iron; the receiving magnet can be made of any one of ferrite, neodymium iron boron, high-frequency ceramic materials, powder metallurgy materials, amorphous and nanocrystalline alloys, and cobalt iron.

[0086] Specifically, the transmitting magnet and the receiving magnet in this embodiment are both made of ferrite material. Therefore, in the following text of this embodiment, the transmitting magnet is referred to as the transmitting ferrite 312, and the receiving magnet is referred to as the receiving ferrite 322. Furthermore, the transmitting unit 31 is in the shape of a full circle or a non-full circle arranged around the outer circumference of the cutter body 1. It can be understood that the angle of the transmitting unit 31 around the outer circumference of the cutter body 1 is θ. Preferably, θ=π, θ=2π. Specifically, θ is the central angle corresponding to the circumferential extension of the emitting ferrite 312 along the blade body 1 .

[0087] In this embodiment, θ=2π. Referring to Figures 3, 4 and 5, the emitting ferrite 312 in this embodiment is accommodated in the first accommodating groove 331 and is arranged around the outer peripheral side of the blade body 1, and the front end surface of the emitting ferrite 312 is provided with a first buried wire groove 312d arranged around the blade body 1, and the transmitting coil 311 is accommodated in the first buried wire groove 312d. Specifically, the emitting ferrite 312 in this embodiment includes a first annular bottom plate 312a, a first annular inner plate 312b and a first annular outer plate 312c. The first annular inner plate 312b is connected to the inner side edge of the first annular bottom plate 312a, and the first annular outer plate 312c is connected to the inner side edge of the first annular bottom plate 312a. 12c is connected to the outer edge of the first annular bottom plate 312a, and a first wire embedding groove 312d with an opening toward the receiving unit 32 is formed between the first annular bottom plate 312a, the first annular inner plate 312b and the first annular outer plate 312c; wherein, the thickness of the first annular bottom plate 312a is H3 mm, the thickness of the first annular inner plate 312b is b3 mm, the thickness of the first annular outer plate 312c is b4 mm, the length of the emitting ferrite 312 extending along the axial direction of the blade body is H4 mm, the inner diameter of the first annular inner plate 312b is D3 mm, and the outer diameter of the first annular outer plate 312c is D4 mm.

[0088] The receiving ferrite 322 is accommodated in the second accommodating groove 341 and is arranged on the outer peripheral side of the blade body 1, and the rear end surface of the receiving ferrite 322 is provided with a second buried wire groove 322d arranged on the blade body 1, and the receiving coil 321 is accommodated in the second buried wire groove 322d. Specifically, the receiving ferrite 322 in this embodiment includes a second annular bottom plate 322a, a second annular inner plate 322b and a second annular outer plate 322c, the second annular inner plate 322b is connected to the inner side edge of the second annular bottom plate 322a, and the second annular outer plate 322c is connected to the second annular bottom plate 322 a, a second wire embedding groove 322d opening toward the transmitting unit 31 is formed between the second annular bottom plate 322a, the second annular inner plate 322b and the second annular outer plate 322c; wherein, the thickness of the second annular bottom plate 322a is H1 mm, the thickness of the second annular inner plate 322b is b1 mm, the thickness of the second annular outer plate 322c is b2 mm, the length of the receiving ferrite 322 extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate 322b is D1 mm, and the outer diameter of the second annular outer plate 322c is D2 mm.

[0089] Preferably, the parameters of the transmitting ferrite 312 and the receiving ferrite 322 can be measured by using a Mitutoyo percentage caliper or other tools for measuring length.

[0090] The relative magnetic permeability of the transmitting ferrite 312 and the receiving ferrite 322 is u, the vacuum magnetic permeability is u0 Henry / m, the magnetic path area of ​​the second annular inner plate 322b is S1, and the magnetic path area of ​​the second annular outer plate 322c is S2. The relationship between S1 and S2 and the above parameters is as follows:

[0091] R1 is the magnetic resistance of the second annular inner plate 322b, R2 is the magnetic resistance of the second annular outer plate 322c, R3 is the magnetic resistance of the second annular bottom plate 322a, and the magnetic resistance R of the receiving unit 32 is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3.............(6)

[0092] The magnetic circuit area of ​​the first annular inner plate 312b is S3, and the magnetic circuit area of ​​the first annular outer plate 312c is S4. The relationship between S3 and S4 and the above parameters is as follows:

[0093] R4 is the magnetic resistance of the first annular inner plate 312b, R5 is the magnetic resistance of the first annular outer plate 312c, R6 is the magnetic resistance of the first annular bottom plate 312a, and the magnetic resistance R of the emitting unit 31 is 发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6............(12)

[0094] The air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 The width of the air gap is δ mm, and the equivalent magnetic circuit area of ​​the air gap between the second annular inner plate 322b and the first annular inner plate 312b is S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate 322c and the first annular outer plate 312c is S δ2 , the vacuum permeability is u0 Henry / m, R δ1 is the air gap magnetic resistance between the second annular inner plate 322b and the first annular inner plate 312b, R δ2 is the air gap reluctance between the second annular outer plate 322c and the first annular outer plate 312c, and F1, F2, F3, and F4 are all fringe flux coefficients used to correct the effect of fringe air gap reluctance on air gap reluctance;

[0095] When b1=b3, then:

[0096] When b2=b4, then:

[0097] When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then:

[0098] When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then:

[0099] Therefore, the air gap magnetic resistance R of the wireless transmission mechanism 3 δ The relationship with the above parameters is as follows: R δ =K2×(R δ1 +R δ2 ).................(twenty three)

[0100] Among them, K2 is the reluctance correction coefficient, 0.2≤K2≤3, and the value range of K2 is based on: F1, F2, F3 and F4 are general expressions for correcting the air gap reluctance while considering the edge air gap reluctance. However, under different air gap intervals, the magnetic circuit shape of the magnetic field is different and the magnetic field segmentation is complex. It is difficult for F1, F2, F3 and F4 to accurately correct the air gap reluctance. In order to make the calculation of the air gap magnetic resistance more accurate under different air gap intervals, it is necessary to introduce the parameter K2 to correct the air gap magnetic resistance; preferably, 0.1≤δ≤3. Specifically, in different embodiments, the air gap width δ is the distance between the transmitting unit 31 and the receiving unit 32, which can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm; preferably, the air gap width δ is 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm.

[0101] Among them, the inductance of the transmitting unit 31 is L d发射 Henry, the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the number of turns of the transmitting coil 311 is N 发射 , then:

[0102] Based on the above structure of the ultrasonic machining device 10 disclosed in this embodiment, the frequency of the electrical signal input to the receiving unit 32 is defined as f Hz, and the peak current of the transmitting unit 31 is defined as I 发射 The magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the number of turns of the transmitting coil 311 is N 发射 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the apparent power of the transmitting unit 31 is Q 发射 Volt-ampere, then the above parameters satisfy the relationship:

[0103] Specifically, by substituting the above equation (24) into equation (25), the apparent power Q of the transmitting unit 31 in this embodiment can be obtained. 发射 Relationship with the above parameters:

[0104] The inductance of the receiving unit 32 is L d接收 Henry, the number of turns of the receiving coil 321 is N 接收 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , then:

[0105] The peak current of the receiving unit 32 is I 接收 The magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the apparent power of the receiving unit 32 is Q 接收 volt-ampere, the number of turns of the receiving coil 321 is N 接收 , then the above parameters satisfy the relationship:

[0106] Substituting the above equation (27) into equation (28), we can obtain the apparent power Q of the receiving unit 32 in this embodiment: 接收 Relationship with the above parameters:

[0107] It should be noted that, since some of the parameters in the relationships (1)-(29) need to be measured by the ultrasonic machining device 10, in order to avoid errors in the measurement data, K1 is set. K1 is a correction coefficient, 0.5≤K1≤1.5, which is used to correct the error between the calculated apparent power and the optimal apparent power caused by human or equipment measurement errors in the data measurement process, such as the measurement error of the frequency of the electrical signal input to the receiving unit, the measurement error of the peak current, etc. The measurement error of the frequency of the electrical signal is generally 15%, and the measurement error of the peak current is 20%; therefore, it can be understood that when there is no error in the measurement parameters, preferably, K1=1; wherein, 2≤N 发射 ≤240, 2≤N 接收 ≤240;

[0108] In this way, the apparent power of the transmitting unit 31 and the receiving unit 32 obtained based on the relations (26) and (29), when the structural parameters of the transmitting unit 31 and the receiving unit 32 of the ultrasonic machining device 10 provided in this embodiment are based on the current, after the current is passed, the peak current passed is consistent with the apparent power obtained based on the above relations, and when working under the conditions, its apparent power and the peak current passed can be coordinated with the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the wireless transmission mechanism 3, thereby reducing the temperature rise of the wireless transmission mechanism 3 in the working state, improving the efficiency of wireless transmission and the stability of continuous operation of the equipment; further, based on reasonable processing requirements, such as the general requirement for processing amplitude is 1μm-10μm, at this time, the increase in amplitude can be basically consistent with the increase in apparent power, and can help avoid the conversion of energy into heat consumption and improve the energy conversion rate.

[0109] Specifically, to verify that the receiving unit 32 and transmitting unit 31 of the ultrasonic machining device 10 provided in the embodiment of the present invention, after matching the peak current and apparent power based on the above relationship, have a lower temperature rise than the prior art and an increase in amplitude substantially the same as the increase in apparent power, two sets of tests were conducted, as shown in the following table:

[0110] In Table 1A and Table 1B, the transmitting unit 31 and the receiving unit 32 of the first ultrasonic machining device are reasonably designed based on the relationship between the parameters of the above relationship. The first ultrasonic machining device is tested after the current is passed through it. At the same time, based on the structural parameters of the first ultrasonic machining device, the transmitting unit 31 is based on the relationship (1)-(26) to obtain the apparent power Q1 of the transmitting unit 31. 发射 :

[0111] Combined with the correction coefficient K1, we get Q1 发射 Setting range;

[0112] The receiving unit 32 obtains the apparent power Q1 of the receiving unit 32 based on equations (1)-(23) and (27)-(29): 接收 :

[0113] Combined with the correction coefficient K1, we get Q1 接收 Setting range;

[0114] After the first ultrasonic machining device is supplied with current, the apparent power Q2 of the transmitting unit 31 is measured. 发射 , the receiving unit 32 has an apparent power Q2 接收 After working for a preset time t under the conditions of the first ultrasonic machining device, the temperature rise measurement result of the first ultrasonic machining device in the working state within the preset time t, at this time, since the transmitting unit 31 and the receiving unit 32 of the first ultrasonic machining device are reasonably designed based on the relationship between the various parameters of the above relationship, therefore, Q2 发射 In Q1 发射 Within the setting range, Q2 接收 In Q1 接收 Within the setting range, specifically, 0.5≤K1≤1.5;

[0115] In addition, referring to Table 2A and Table 2B, a second ultrasonic machining device of the prior art is set as a comparative example, and the structural parameters of the transmitting unit 31 and the receiving unit 32 of the second ultrasonic machining device are obtained. The structural parameters of the transmitting unit 31 of the second ultrasonic machining device are substituted into the relationship formula (1)-(26), and the apparent power Q3 of the transmitting unit 31 of the second ultrasonic machining device is obtained if the transmitting unit 31 of the second ultrasonic machining device is reasonably designed. 发射 :

[0116] Combined with the correction coefficient K1, we get Q3 发射 Setting range;

[0117] Substituting the structural parameters of the receiving unit 32 of the second ultrasonic machining device into equations (1)-(23) and (27)-(29) yields the apparent power Q3 of the receiving unit 32 of the second ultrasonic machining device if the receiving unit 32 is reasonably designed. 接收 :

[0118] Combined with the correction coefficient K1, we get Q3 接收 The setting range is, specifically, 0.5≤K1≤1.5;

[0119] After the second ultrasonic machining device is supplied with current, the actual apparent power Q4 of the transmitting unit 31 during operation is measured. 发 射 , the actual apparent power Q4 of the receiving unit 32接收 , and after working for a preset time t, the temperature rise measurement result of the second ultrasonic machining device in the working state within the preset time t, and, at this time, Q4 发射 Not in Q3 发射 Within the setting range, Q4 接收 Not in Q3 接收 Therefore, the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the second ultrasonic machining device do not match, and the design of the transmitting unit 31 and the receiving unit 32 of the second ultrasonic machining device is unreasonable.

[0120] The test method is:

[0121] Under the ambient temperature of 24°C, the air gap width δ between the transmitting unit 31 and the receiving unit 32 of the first ultrasonic processing device and the second ultrasonic processing device is set to 0.3 mm. The transmitting unit 31 is connected to the ultrasonic generator, the receiving unit 32 is connected to the ultrasonic transducer 2, and the receiving unit 32 and the transmitting unit 31 are connected to the Yokogawa power oscilloscope to collect the peak current I of the transmitting unit 31. 发射 and apparent power Q 发射 , the peak current I of the receiving unit 32 接 收 and apparent power Q 接收 The frequency f of the electrical signal input to the receiving unit 32 is detected by a Tektronix oscilloscope.

[0122] Table 1A

[0123] Table 1B

[0124] Table 2A

[0125] Table 2B

[0126] It should be noted that Table 1A and Table 1B are the temperature rise data of the receiving unit 32 and the transmitting unit 31, and the amplitude data of the processing tool 20 connected thereto, for the first ultrasonic processing device designed in accordance with the above-mentioned relational expressions (26) and (29) of the present invention, under a preset ambient temperature, when currents of different sizes are respectively passed through and the working time is continuously set to 10 minutes; Table 2A and Table 2B are the temperature rise data of the receiving unit 32 and the transmitting unit 31, and the amplitude data of the processing tool 20 connected thereto, for the second ultrasonic processing device designed not in accordance with the above-mentioned relational expressions (26) and (29) of the present invention, under a preset ambient temperature, when currents of different sizes are respectively passed through and the working time is continuously set to 10 minutes.

[0127] As can be seen from Table 1A and Table 1B, the ultrasonic machining device 10 is rationally designed based on the relationship of the present invention so that the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 can be coordinated with the peak current and apparent power supplied. During operation, the temperature rise of the wireless transmission mechanism 3 in the working state can be reduced, thereby improving the efficiency of wireless transmission and the stability of continuous operation of the equipment. Furthermore, when the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 can be coordinated with the peak current and apparent power supplied, more energy of the ultrasonic machining device 10 can be effectively used for work. When operating at different apparent powers, after the machining tool 20 is installed, the amplitude increase generated by the machining end of the machining tool 20 can be substantially the same as the apparent power increase of the first ultrasonic machining device, thereby maintaining a high energy conversion rate.

[0128] It can be seen from Table 2A and Table 2B that the temperature rise of the second ultrasonic machining device in Table 2A and Table 2B is significantly higher than that of the first ultrasonic machining device in Table 1A and Table 1B, and when the second ultrasonic machining device is installed with the machining tool 20, the amplitude increase generated by the machining end of the machining tool 20 is significantly different from the increase in the apparent power of the second ultrasonic machining device, resulting in a small change in the amplitude while the apparent power increases, and a low energy conversion rate; that is, the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the second ultrasonic machining device do not match. Therefore, the transmitting unit 31 and the receiving unit 32 of the second ultrasonic machining device are not matched. 2 is unreasonable. During the operation of this type of second ultrasonic machining device, the energy of its wireless transmission mechanism 3 will have a higher proportion of heat energy consumption, resulting in the temperature rise rate of this type of second ultrasonic machining device being significantly higher than that of the first ultrasonic machining device in Table 1A and Table 1B. In addition, the amplitude generated by the machining end of the machining tool 20 of this type of second ultrasonic machining device has a large increase rate and a large difference from the increase rate of the apparent power. As a result, when the apparent power of this type of second ultrasonic machining device increases, the amplitude change of the machining tool 20 lags and changes less, and the overall energy conversion rate of the wireless transmission mechanism 3 is low.

[0129] It should be noted that the apparent power Q2 of the first ultrasonic machining device and the second ultrasonic machining device 发射 、Q2 接收 、Q4 发射 、Q4 接收 , pass peak current I 发射 , I 接收 , are measured by a Yokogawa power oscilloscope (model: PX8000). Specifically, this embodiment 1 provides a measurement method as follows:

[0130] Connect the CH1 voltage probe of the Yokogawa power oscilloscope to the positive and negative poles of the transmitter unit 31 respectively, and connect the CH1 current probe to the transmitter unit 31. The direction of the CH1 current probe is from the positive pole to the negative pole;

[0131] Connect the CH2 voltage probe of the Yokogawa power oscilloscope to the positive and negative poles of the receiving unit 32 respectively, and connect the CH2 current probe to the receiving unit 32, with the direction of the CH2 current probe flowing from the positive pole to the negative pole;

[0132] Press the ELEM1 button to open the CH1 measurement channel; press the U1 button and select voltage measurement, press the I1 button and select current measurement; press the P1 button to select power measurement;

[0133] Press the ELEM2 button to open the CH2 measurement channel; press the U2 button and select voltage measurement; press the I2 button and select current measurement; press the P2 button and select power measurement;

[0134] After pressing the "MODE" button, select "Numeric+Wave" mode in the "DISPLAY MODE" menu; press the "SETTING" button, and in the "NUMERIC SETTING" menu, set "Format" to "16 Items";

[0135] Press the "START / STOP" button to start the test. The apparent power and peak current of the transmitting unit 31 and the receiving unit 32 are obtained through the data displayed on the screen. Among them, I+pk1 represents the peak current of CH1, that is, the peak current passed by the transmitting unit 31; S1 represents the apparent power of CH1, that is, the apparent power of the transmitting unit 31; I+pk2 represents the peak-to-peak value of CH2 current, that is, the peak current passed by the receiving unit 32; S2 represents the apparent power of CH2, that is, the apparent power of the receiving unit 32.

[0136] In addition, in the first ultrasonic machining device and the second ultrasonic machining device, the frequency f of the electrical signal input to the receiving unit 32 is measured by a Tektronix oscilloscope (model: MDO3024). Specifically, this embodiment 1 provides a measurement method as follows:

[0137] Insert the differential probe into the CH1 interface and connect it to the positive and negative terminals of the receiving unit 32 respectively;

[0138] Open the "Menu" option, select "Edge" in the "Type" item, select "1" in the "Source" item, select "AC" in the "Coupling" item, select "Rising Edge" in the "Slope" item, set the "Level" item to "0V", and select "Auto" in the "Mode" option;

[0139] Press the "1" button to turn on the CH1 measurement channel, and select AC coupling mode in the options that pop up at the bottom of the screen. Press the "Measure" button in the Wave Inspector button area, select "Add Measurement" in the options that pop up at the bottom of the screen, select "1" in the "Source" item, select "Frequency" in the "Measurement Type" item, and select "OK to add measurement".

[0140] Press “Run / Stop” to start the test, wait for the ultrasonic power supply frequency sweep to be completed, then read and record the measured frequency on the screen. This frequency is the frequency f of the electrical signal input to the receiving unit 32.

[0141] It should be noted that, in this embodiment, the transmitting ferrite 312 and the receiving ferrite 322 of the first ultrasonic processing device and the second ultrasonic processing device are both made of manganese zinc ferrite material, and the relative magnetic permeability u is 2500; the apparent power Q2 in the first ultrasonic processing device and the second ultrasonic processing device is 发射 、Q2 接收 、Q4 发射 、Q4 接收 , Peak input current I 发射 , I 接收 , are measured by a Yokogawa power oscilloscope (model: PX8000); in the first ultrasonic machining device and the second ultrasonic machining device, the frequency f of the electrical signal input to the receiving unit 32 is measured by a Tektronix oscilloscope (model: MDO3024);

[0142] In addition, the first ultrasonic processing device and the second ultrasonic processing device in this embodiment are both equipped with a D6 flat-bottom milling cutter with a tool length of 20 mm. In different tests, different processing tools and corresponding tool lengths can also be used, such as: D4 tungsten steel rod, with a tool length of 20 mm; D16 flat-bottom milling cutter, with a tool length of 50 mm.

[0143] Example 2:

[0144] 9-16 , the difference between this embodiment and embodiment 1 is that: It should be noted that the transmitting magnet and the receiving magnet in this embodiment are both made of ferrite material. Therefore, in the following text of this embodiment, the transmitting magnet is referred to as the transmitting ferrite 312 and the receiving magnet is referred to as the receiving ferrite 322.

[0145] 12-15, the emitting ferrite 312 is accommodated in the first accommodating groove 331, and the front end surface of the emitting ferrite 312 is provided with a first buried wire groove 312d. Specifically, the emitting ferrite 312 in this embodiment includes an arc-shaped bottom plate 312e, an arc-shaped inner plate 312f and an arc-shaped outer plate 312g, the arc-shaped inner plate 312f is connected to the inner side of the arc-shaped bottom plate 312e, and the arc-shaped outer plate 312g is connected to the outer side of the arc-shaped bottom plate 312e. Preferably, the arc-shaped bottom plate 312e, the arc-shaped outer plate 312g and the arc-shaped outer plate 312g are connected to the outer side of the arc-shaped bottom plate 312e. The arc-shaped inner plate 312f is concentrically arranged, and a first buried wire groove 312d with an opening toward the receiving unit 32 is formed between the arc-shaped bottom plate 312e, the arc-shaped inner plate 312f and the arc-shaped outer plate 312g; wherein, the thickness of the arc-shaped bottom plate 312e is H3 mm, the thickness of the arc-shaped inner plate 312f is b3 mm, the thickness of the arc-shaped outer plate 312g is b4 mm, the length of the emitting ferrite 312 extending along the axial direction of the blade body is H4 mm, the inner diameter of the arc-shaped inner plate 312f is D3 mm, and the outer diameter of the arc-shaped outer plate 312g is D4 mm.

[0146] 11-16 , the transmitting coil 311 is disposed around the arc-shaped bottom plate 312e or the arc-shaped outer plate 312g. In this embodiment, the transmitting coil 311 is disposed around the arc-shaped outer plate 312g and is partially buried in the first buried wire groove 312d. Based on this structure, the magnetic flux lines generated by the transmitting coil 311 after being energized are emitted from the front end surface of the arc-shaped outer plate 312g to the receiving unit 32, and are transmitted by the receiving unit 32 and then flow back from the front end surface of the arc-shaped inner plate 312f.

[0147] 11-16, the receiving ferrite 322 is accommodated in the second accommodating groove 341, and the rear end surface of the receiving ferrite 322 is provided with a second buried wire groove 322d arranged in an annular manner on the blade body 1, and the receiving coil 321 is accommodated in the second buried wire groove 322d. Specifically, the receiving ferrite 322 in this embodiment includes a second annular bottom plate 322a, a second annular inner plate 322b and a second annular outer plate 322c, the second annular inner plate 322b is connected to the inner side of the second annular bottom plate 322a, and the second annular outer plate 322c is connected to the second annular bottom plate 322a. On the outer edge, a second wire embedding groove 322d with an opening toward the transmitting unit 31 is formed between the second annular bottom plate 322a, the second annular inner plate 322b and the second annular outer plate 322c; wherein, the thickness of the second annular bottom plate 322a is H1 mm, the thickness of the second annular inner plate 322b is b1 mm, the thickness of the second annular outer plate 322c is b2 mm, the length of the receiving ferrite 322 extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate 322b is D1 mm, and the outer diameter of the second annular outer plate 322c is D2 mm.

[0148] The relative magnetic permeability of the transmitting ferrite 312 and the receiving ferrite 322 is u, the vacuum magnetic permeability is u0 Henry / meter, the magnetic path area of ​​the second annular inner plate 322b of the receiving ferrite 322 is S1, and the magnetic path area of ​​the second annular outer plate 322c is S2. The relationship between S1 and S2 and the above parameters is as follows:

[0149] R1 is the magnetic resistance of the second annular inner plate 322b, R2 is the magnetic resistance of the second annular outer plate 322c, R3 is the magnetic resistance of the second annular bottom plate 322a, and the magnetic resistance R of the receiving unit 32 is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3.............(35)

[0150] The magnetic circuit area of ​​the arc-shaped inner plate 312f is S3, and the magnetic circuit area of ​​the arc-shaped outer plate 312g is S4. The relationship between S3 and S4 and the above parameters is as follows:

[0151] R4 is the magnetic resistance of the arc-shaped inner plate 312f, R5 is the magnetic resistance of the arc-shaped outer plate 312g, R6 is the magnetic resistance of the arc-shaped bottom plate 312e, and the magnetic resistance R of the transmitting unit 31 is 0. 发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6............(41)

[0152] The air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 The width of the air gap is δ mm, and the equivalent magnetic circuit area of ​​the air gap between the second annular inner plate 322b and the arc-shaped inner plate 312f is S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate 322c and the arc-shaped outer plate 312g is S δ2 , the vacuum permeability is u0 Henry / m, R δ1 is the air gap magnetic resistance between the second annular inner plate 322b and the arc-shaped inner plate 312f, R δ2 is the air gap reluctance between the second annular outer plate 322c and the arc-shaped outer plate 312g, and F1, F2, F3, and F4 are all fringe flux coefficients used to correct the effect of fringe air gap reluctance on air gap reluctance;

[0153] When b1=b3, then:

[0154] When b2=b4, then:

[0155] When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then:

[0156] When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then: R δ =K2×(R δ1 +R δ2 ).................(52)

[0157] Among them, K2 is the reluctance correction coefficient, 0.2≤K2≤3, and the value range of K2 is based on: F1, F2, F3 and F4 are general expressions for the correction of air gap reluctance when considering the edge air gap reluctance. However, at different air gap intervals, the magnetic field has different magnetic circuit shapes and the magnetic field segmentation is complex. It is difficult for F1, F2, F3 and F4 to accurately correct the air gap reluctance. In order to make the air gap reluctance calculation more accurate under different air gap intervals, it is necessary to introduce the parameter K2 to correct the air gap reluctance;

[0158] Preferably, 0.1≤δ≤3. Specifically, in different embodiments, the air gap width δ is the distance between the transmitting unit 31 and the receiving unit 32, which can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm; preferably, the air gap width δ is 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.1 mm.

[0159] Among them, the inductance of the transmitting unit 31 is L d发射 Henry, the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the number of turns of the transmitting coil 311 is N 发射 , then:

[0160] Furthermore, based on the above structure of the ultrasonic machining device 10 disclosed in this embodiment, the frequency of the electrical signal input to the receiving unit 32 is defined as f Hz, and the number of turns of the transmitting coil 311 is N 发射 , the peak current of the transmitting unit 31 is I发射 The magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the apparent power of the transmitting unit 31 is Q 发射 Volt-ampere, then the above parameters satisfy the relationship:

[0161] Substituting the above equation (53) into equation (54), we can obtain the apparent power Q of the transmitting unit 31 in this embodiment: 发射 Relationship with the above parameters:

[0162] The inductance of the receiving unit 32 is L d接收 Henry, the number of turns of the receiving coil 321 is N 接收 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , then:

[0163] Furthermore, the peak current of the receiving unit 32 is I 接收 The magnetic resistance of the transmitting unit 31 is R 发射 Henry -1 , the air gap magnetic resistance of the wireless transmission mechanism 3 is R δ Henry -1 , the magnetic resistance of the receiving unit 32 is R 接收 Henry -1 , the number of turns of the receiving coil 321 is N 接收 , the apparent power of the receiving unit 32 is Q 接收 Volt-ampere, then the above parameters satisfy the relationship:

[0164] Substituting the above equation (56) into equation (57), we can obtain the apparent power Q of the receiving unit 32 in this embodiment: 接收 Relationship with the above parameters:

[0165] It should be noted that, since some of the parameters in the relationships (30)-(58) need to be measured by the ultrasonic machining device 10, in order to avoid errors in the measurement data, K1 is set. K1 is a correction coefficient, 0.5≤K1≤1.5, which is used to correct the error between the calculated apparent power and the optimal apparent power caused by human errors in the data measurement process, such as the measurement error of the frequency of the electrical signal input to the receiving unit 32, the measurement error of the peak current, etc. The frequency measurement error of the electrical signal is generally 15%, and the measurement error of the peak current is 20%. Therefore, it can be understood that when there is no error in the measurement parameters, preferably, K1=1; wherein, 2≤N 发射 ≤240, 2≤N 接收 ≤240;

[0166] In this way, the apparent power of the transmitting unit 31 and the receiving unit 32 obtained based on the relations (55) and (58), when the structural parameters of the transmitting unit 31 and the receiving unit 32 of the ultrasonic machining device 10 provided in this embodiment are based on the current, after the current is passed, the peak current passed is consistent with the apparent power obtained based on the above relations, and when working under the conditions, its apparent power and the peak current passed can be coordinated with the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the wireless transmission mechanism 3, thereby reducing the temperature rise of the wireless transmission mechanism 3 in the working state, improving the efficiency of wireless transmission and the stability of continuous operation of the equipment; further, based on the reasonable requirements of processing, the increase in amplitude can be basically consistent with the increase in apparent power, and can help avoid the conversion of energy into heat consumption and improve the energy conversion rate.

[0167] Specifically, to verify that the receiving unit 32 and transmitting unit 31 of the ultrasonic machining device 10 provided in the embodiment of the present invention, after matching the peak current and apparent power based on the above relationship, have a lower temperature rise than the prior art and an increase in amplitude substantially the same as the increase in apparent power, two sets of tests were conducted, as shown in the following table:

[0168] In Table 3A and Table 3B, the transmitting unit 31 and the receiving unit 32 of the third ultrasonic machining device are reasonably designed based on the above relationship. The third ultrasonic machining device is tested after the current is passed through it. At the same time, based on the structural parameters of the third ultrasonic machining device, the apparent power Q5 of the transmitting unit 31 is obtained based on the relationship (30)-(55). 发射 :

[0169] Combined with the correction coefficient K1, we get Q5 发射 Setting range;

[0170] The receiving unit 32 obtains the apparent power Q5 of the receiving unit 32 based on the relations (30)-(52) and (56)-(58): 接收 Relationship with the above parameters:

[0171] Combined with the correction coefficient K1, we get Q5 接收 Setting range;

[0172] After the third ultrasonic machining device is supplied with current, the apparent power Q6 of the transmitting unit 31 is measured. 发射 , the receiving unit 32 at the apparent power Q6 接收 After working for a preset time t under the conditions of the third ultrasonic machining device, the temperature rise measurement result of the third ultrasonic machining device during the preset time t is obtained. At this time, since the transmitting unit 31 and the receiving unit 32 of the third ultrasonic machining device are reasonably designed based on the relationship between the various parameters of the above relationship, Q6 发射 In Q5 发射 Within the setting range, Q6 接收 In Q5 接收 Within the setting range, specifically, 0.5≤K1≤1.5;

[0173] In addition, referring to Table 4A and Table 4B, a fourth ultrasonic machining device of the prior art is set as a comparative example, and the structural parameters of the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic machining device are obtained. The structural parameters of the transmitting unit 31 of the fourth ultrasonic machining device are substituted into the relationship (30)-(55) to obtain the apparent power Q7 of the transmitting unit 31 of the fourth ultrasonic machining device if the transmitting unit 31 is reasonably designed. 发射 :

[0174] Combined with the correction coefficient K1, we get Q7 发射 Setting range;

[0175] Substituting the structural parameters of the receiving unit 32 of the fourth ultrasonic machining device into equations (30)-(52) and (56)-(58) yields the apparent power Q7 of the receiving unit 32 if the receiving unit 32 of the fourth ultrasonic machining device is reasonably designed. 接收 :

[0176] Combined with the correction coefficient K1, we get Q7 接收 The setting range is, specifically, 0.5≤K1≤1.5;

[0177] After the fourth ultrasonic machining device is supplied with current, the actual apparent power Q8 of the transmitting unit 31 during operation is measured. 发 射 , the actual apparent power Q8 of the receiving unit 32接收 , and after working for a preset time t, the temperature rise measurement result of the fourth ultrasonic machining device in the working state within the preset time t, and, at this time, Q8 发射 Not in Q7 发射 Within the setting range, Q8 接收 Not in Q7 接收 Therefore, the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic machining device do not match, and the design of the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic machining device is unreasonable.

[0178] The test method is:

[0179] Under the ambient temperature of 24°C, the air gap width δ between the transmitting unit 31 and the receiving unit 32 of the third ultrasonic processing device is set to 0.3 mm, and the air gap width δ between the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic processing device is set to 0.2 mm. The transmitting units 31 of the third ultrasonic processing device and the fourth ultrasonic processing device are respectively connected to the ultrasonic generator, and the receiving unit 32 is connected to the ultrasonic transducer 2. The receiving unit 32 and the transmitting unit 31 are connected to the Yokogawa power oscilloscope to respectively collect the peak current I 发射 , I 接收 and apparent power Q 发射 , Q 接收 The frequency f of the electrical signal input to the receiving unit 32 is detected by a Tektronix oscilloscope.

[0180] Table 3A

[0181] Table 3B

[0182] Table 4A

[0183] Table 4B

[0184] It should be noted that Tables 3A and 3B are the temperature rise data of the receiving unit 32 and the transmitting unit 31, and the amplitude data of the processing tool 20 connected thereto, for the third ultrasonic processing device designed in accordance with the above-mentioned relational expressions (55) and (58) of the present invention. At a preset ambient temperature, when currents of different sizes are respectively passed through and the working time is continuously set to 10 minutes, Tables 4A and 4B are the temperature rise data of the receiving unit 32 and the transmitting unit 31, and the amplitude data of the processing tool 20 connected thereto, for the fourth ultrasonic processing device designed in accordance with the above-mentioned relational expressions (55) and (58) of the present invention. At a preset ambient temperature, when currents of different sizes are respectively passed through and the working time is continuously set to 10 minutes, Tables 4A and 4B are the temperature rise data of the receiving unit 32 and the transmitting unit 31, and the amplitude data of the processing tool 20 connected thereto, for the fourth ultrasonic processing device designed in accordance with the above-mentioned relational expressions (55) and (58) of the present invention.

[0185] As can be seen from Tables 3A and 3B, the ultrasonic machining device 10 is rationally designed based on the relationship of the present invention, so that the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 can be coordinated with the peak current and apparent power supplied. During operation, the temperature rise of the wireless transmission mechanism 3 in the operating state can be reduced, thereby improving the efficiency of wireless transmission and the stability of the continuous operation of the device. Furthermore, when the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 can be coordinated with the peak current and apparent power supplied, more energy of the ultrasonic machining device 10 can be effectively used for work. When operating at different apparent powers, after the machining tool 20 is installed, the amplitude increase generated by the machining end of the machining tool 20 can be substantially the same as the apparent power increase of the first ultrasonic machining device, thereby maintaining a high energy conversion rate.

[0186] It can be seen from Table 4A and Table 4B that the temperature rise of the fourth ultrasonic machining device in Table 4A and Table 4B is significantly higher than that of the third ultrasonic machining device in Table 3A and Table 3B, and when the fourth ultrasonic machining device is installed with the machining tool 20, the increase in amplitude generated by the machining end of the machining tool 20 is significantly different from the increase in the apparent power of the fourth ultrasonic machining device, resulting in a small change in amplitude while the apparent power increases, and a low energy conversion rate. That is, the structural parameters and performance of the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic machining device do not match. Therefore, the design of the transmitting unit 31 and the receiving unit 32 of the fourth ultrasonic machining device is unreasonable. During the operation of this type of fourth ultrasonic machining device, the energy of its wireless transmission mechanism 3 will have a higher proportion of heat energy consumption, resulting in the temperature rise rate of this type of fourth ultrasonic machining device being significantly higher than that of the third ultrasonic machining device in Tables 3A and 3B. In addition, the amplitude generated by the machining end of the machining tool 20 of this type of fourth ultrasonic machining device has a large increase rate that is different from the increase rate of the apparent power, resulting in that when the apparent power of this type of fourth ultrasonic machining device increases, the amplitude change of the machining tool 20 lags and changes less, and the overall energy conversion rate of the wireless transmission mechanism 3 is low.

[0187] It should be noted that the apparent power Q6 of the third ultrasonic machining device and the fourth ultrasonic machining device is 发射 、Q6 接收 、Q8 发射 、Q8 接收 , the peak current I 发射 , I 接收 , are measured by a Yokogawa power oscilloscope (model: PX8000). Specifically, this embodiment 2 provides a measurement method as follows:

[0188] Connect the CH1 voltage probe of the Yokogawa power oscilloscope to the positive and negative poles of the transmitter unit 31 respectively, and connect the CH1 current probe to the transmitter unit 31. The direction of the CH1 current probe is from the positive pole to the negative pole;

[0189] Connect the CH2 voltage probe of the Yokogawa power oscilloscope to the positive and negative poles of the receiving unit 32 respectively, and connect the CH2 current probe to the receiving unit 32, with the direction of the CH2 current probe flowing from the positive pole to the negative pole;

[0190] Press the ELEM1 button to open the CH1 measurement channel; press the U1 button and select voltage measurement, press the I1 button and select current measurement; press the P1 button to select power measurement;

[0191] Press the ELEM2 button to open the CH2 measurement channel; press the U2 button and select voltage measurement; press the I2 button and select current measurement; press the P2 button and select power measurement;

[0192] After pressing the "MODE" button, select "Numeric+Wave" mode in the "DISPLAY MODE" menu; press the "SETTING" button, and in the "NUMERIC SETTING" menu, set "Format" to "16 Items";

[0193] Press the "START / STOP" button to start the test. The apparent power and peak current of the transmitting unit 31 and the receiving unit 32 are obtained through the data displayed on the screen. Among them, I+pk1 represents the peak current of CH1, that is, the peak current passed by the transmitting unit 31; S1 represents the apparent power of CH1, that is, the apparent power of the transmitting unit 31; I+pk2 represents the peak-to-peak value of CH2 current, that is, the peak current passed by the receiving unit 32; S2 represents the apparent power of CH2, that is, the apparent power of the receiving unit 32.

[0194] In addition, in the first ultrasonic machining device and the second ultrasonic machining device, the frequency f of the electrical signal input to the receiving unit 32 is measured by a Tektronix oscilloscope (model: MDO3024). Specifically, this embodiment 2 provides a measurement method as follows:

[0195] Insert the differential probe into the CH1 interface and connect it to the positive and negative terminals of the receiving unit 32 respectively;

[0196] Open the "Menu" option, select "Edge" in the "Type" item, select "1" in the "Source" item, select "AC" in the "Coupling" item, select "Rising Edge" in the "Slope" item, set the "Level" item to "0V", and select "Auto" in the "Mode" option;

[0197] Press the "1" button to turn on the CH1 measurement channel, and select AC coupling mode in the options that pop up at the bottom of the screen. Press the "Measure" button in the Wave Inspector button area, select "Add Measurement" in the options that pop up at the bottom of the screen, select "1" in the "Source" item, select "Frequency" in the "Measurement Type" item, and select "OK to add measurement".

[0198] Press “Run / Stop” to start the test, wait for the ultrasonic power supply frequency sweep to be completed, then read and record the measured frequency on the screen. This frequency is the frequency f of the electrical signal input to the receiving unit 32.

[0199] It should be noted that, in this embodiment, the transmitting ferrite 312 and the receiving ferrite 322 of the third ultrasonic machining device and the fourth ultrasonic machining device are both made of manganese-zinc ferrite, and their relative magnetic permeability u is 2500; the apparent power Q6 in the third ultrasonic machining device and the fourth ultrasonic machining device is 发射 、Q6 接收 、Q8 发射 、Q8 接收 , Peak input current I 发射 , I 接收 , are measured by a Yokogawa power oscilloscope (model: PX8000); in the third ultrasonic machining device and the fourth ultrasonic machining device, the frequency f of the electrical signal input to the receiving unit 32 is measured by a Tektronix oscilloscope (model: MDO3024);

[0200] In addition, the third ultrasonic processing device and the fourth ultrasonic processing device in this embodiment are both equipped with a D6 flat-bottom milling cutter with a tool length of 20 mm. In different tests, different processing tools and corresponding tool lengths can also be used, such as: D4 tungsten steel rod, with a tool length of 20 mm; D16 flat-bottom milling cutter, with a tool length of 50 mm.

[0201] Specifically, in this embodiment, a bracket 112 is provided, and the launching frame 33 is mounted on the first rotation output unit 110 through the bracket 112 .

[0202] Example 3:

[0203] 1-16 , based on the ultrasonic machining device 10 of the above-mentioned embodiment 1 or embodiment 2, this embodiment provides an ultrasonic spindle 100 , specifically, including a first rotation output unit 110 , a machining tool 20 and the ultrasonic machining device 10 of embodiment 1 or embodiment 2.

[0204] Specifically, referring to Figures 1 to 8, this embodiment is based on the ultrasonic processing device 10 of Example 1. The ultrasonic processing device 10 also includes a transmitting frame 33 and a receiving frame 34. The transmitting frame 33 and the receiving frame 34 are arranged opposite to each other along the axial direction of the blade body 1. A first accommodating groove 331 is provided on one end surface of the transmitting frame 33 facing the receiving frame 34, and a second accommodating groove 341 is provided on one end surface of the receiving frame 34 facing the transmitting frame 33. The receiving unit 32 is accommodated in the second accommodating groove 341, and the transmitting unit 31 is accommodated in the first accommodating groove 331.

[0205] Refer to Figures 1-3, in which the end cover 111 of the first rotation output unit 110 in this embodiment is equivalent to the launch frame 33, and the launch unit 31 is arranged in a first receiving groove 331 opened on the front end surface of the end cover 111; in other embodiments, a bracket can also be used to hang the launch unit 31 on other equipment, and the launch frame 33 is connected to the bracket and is integrally formed with the bracket or detachably connected. The specific assembly structure is not repeated here.

[0206] Specifically, referring to Figures 1 and 2, the rear end of the blade body 1 in this embodiment is used to connect to the first rotation output unit 110, and the front end is provided with an installation cavity 11 for accommodating the ultrasonic transducer 2. The ultrasonic transducer 2 is arranged in the installation cavity 11 and is electrically connected to the receiving unit 32.

[0207] Furthermore, referring to FIG3 , to improve the reliability of the installation between the blade body 1 and the receiving frame 34, the outer circumference of the blade body 1 in this embodiment is provided with a radially protruding limiting collar 12. When the receiving frame 34 is installed and sleeved onto the outer circumference of the blade body 1, it abuts against the rear end surface of the limiting collar 12, thereby limiting the relative position of the receiving frame 34 and the blade body 1 during assembly. This ensures that the weight distribution of the blade body 1 in its axial direction, with the receiving frame 34 installed, meets design specifications, thereby improving the operational stability of the ultrasonic machining device 10 during machining. Preferably, the receiving frame 34 in this embodiment is welded to the blade body 1.

[0208] The ultrasonic transducer 2 in this embodiment includes a piezoelectric vibrator 21, a screw 22, and a back cover 23, wherein the ultrasonic machining device 10 in this embodiment also includes a variable amplitude rod 24, so that the screw 22 is arranged in the mounting cavity 11 and extends along the axial direction of the blade body 1, and the rear end of the variable amplitude rod 24 extends into the mounting cavity 11 and is fixedly connected to the screw 22, the piezoelectric vibrator 21 is sleeved on the outer peripheral side of the screw 22, and the rear end face of the variable amplitude rod 24 protrudes from the outer peripheral surface of the screw 22 along the radial direction of the screw 22 and forms a top plane, so that when the back cover 23 is inserted into the screw 22 from the rear end of the screw 22 and is threadedly connected to the screw 22, it can cooperate with the top plane to limit the position of the piezoelectric vibrator 21 relative to the screw 22.

[0209] Preferably, the horn 24 and the screw 22 in this embodiment are integrally formed, thereby improving the overall strength of the horn 24 and the screw 22 , and being able to stably and longer-term output vibration of a preset frequency under the action of the piezoelectric vibrator 21 .

[0210] 3 and 7 , in order to achieve the fixation of the machining tool 20 and the horn 24, the ultrasonic machining device 10 in this embodiment further includes a collet 5 and a nut 6, wherein the front end of the horn 24 is provided with a socket 241 extending toward the rear end, and the collet 5 can be sleeved on the outer periphery of the machining tool 20 and inserted into the socket 241 together with the machining tool 20. Specifically, the inner axial surface of the socket 241 in this embodiment is tapered with a diameter gradually decreasing from front to back, and the collet 5 has a tapered section 51 that cooperates with the tapered socket 241. When the collet 5 and the processing tool 20 are inserted into the socket 241, the inner circumference of the socket 241 can press against the collet 5, causing the collet 5 to deform and clamp the processing tool 20. Furthermore, in order to ensure that the processing tool 20 is inserted into the preset position of the socket 241 and can be fixed relative to the amplitude rod 24, the nut 6 is inserted into the outer circumference of the collet 5 and the nut 6 is threadedly connected to the amplitude rod 24. At this time, the nut 6 can press against the front end of the collet 5 to prevent the collet 5 from moving forward, so that the processing tool 20 can be stably assembled on the amplitude rod 24.

[0211] Further, referring to Figure 8, the collet 5 in this embodiment includes a conical cylinder section 51 adapted to the socket, and the collet 5 has a plurality of first deformation grooves 52 spaced apart along its circumference. Specifically, the plurality of first deformation grooves 52 are evenly distributed along the circumference of the collet 5, so that its deformation is evenly distributed along the circumference. The first deformation grooves 52 extend to or extend through the conical cylinder section 51. In this way, in the process of the collet 5 being pushed into the socket 241, a certain amount of deformation can be generated through the first deformation grooves 52, thereby generating deformation and clamping the processing tool. At the same time, when the characteristics of the material itself are expressed, the collet 5 can be deformed and reset after being disassembled from the amplitude rod 24 for reuse.

[0212] Among them, the first deformation groove 52 connects the outer side surface and the inner side surface of the collet 5. The first deformation groove 52 extends from the front end surface of the collet 5 along the axial direction of the collet 5 to the rear through the conical cylinder section 51 and extends to the rear end surface of the collet 5. The rear groove surface of the first deformation groove 52 and the rear end surface of the collet 5 have a first gap 54. The specific width of the first gap 54 is greater than zero, so that the collet 5 has sufficient deformation ability and can have a certain strength for clamping the processing tool 20.

[0213] Furthermore, the collet 5 has a plurality of second deformation grooves 53 spaced apart along its circumference. The second deformation grooves 53 extend to or through the conical cylinder section 51. The second deformation grooves 53 are spaced apart from the first deformation grooves 52 and are arranged alternately. Specifically, there is a second deformation groove 53 between any two adjacent first deformation grooves 52, so that the collet 5 is subjected to uniform force during deformation.

[0214] In this embodiment, a second gap 55 is formed between the front groove surface of the second deformation groove 53 and the front end surface of the collet 5 . The second deformation groove 53 extends through the rear end surface of the collet 5 . The width of the second gap 55 is greater than zero.

[0215] Specifically, in different embodiments, the machining tool 20 may be a cutter head, a milling cutter, a grinding cutter or other tools.

[0216] Based on the above-mentioned ultrasonic spindle 100 , an embodiment of the present invention further provides an ultrasonic machine tool, comprising a machine tool body (not shown) and the above-mentioned ultrasonic spindle 100 , wherein the ultrasonic spindle 100 is mounted on the machine tool body.

[0217] Example 4:

[0218] 17-18 , the ultrasonic machining device 10 according to the first or second embodiment includes a blade 1, an ultrasonic transducer 2, and a wireless transmission mechanism 3. The rear end of the blade 1 is mounted on a rotary output device and rotates synchronously with the rotary output device.

[0219] Specifically, this embodiment is based on the ultrasonic machining device 10 of the above-mentioned embodiment 1, and the wireless transmission mechanism 3 is wound around the outer peripheral side of the blade body 1. Specifically, as shown in Figures 17 and 18, the wireless transmission mechanism 3 in this embodiment includes a transmitting unit 31 and a receiving unit 32. The transmitting unit 31 is provided on the outer peripheral side of the blade body 1, and the receiving unit 32 is provided on the outer peripheral side of the blade body 1. The transmitting unit 31 and the receiving unit 32 are arranged opposite to each other along the axial direction of the blade body 1 and form an air gap 4. The transmitting unit 31 includes a transmitting coil 311 and a transmitting ferrite 312, and the receiving unit 32 includes a receiving coil 321 and a receiving ferrite 322.

[0220] Specifically, the launch unit 31 is in the shape of a full circle or a non-full circle arranged around the outer circumference of the blade body 1. It can be understood that the angle of the launch unit 31 around the outer circumference of the blade body 1 is θ. Preferably, θ=π, θ=2π. Specifically, θ is the central angle corresponding to the circumferential extension of the emitting ferrite 312 along the blade body 1 .

[0221] 17 and 18 , specifically, this embodiment provides an ultrasonic drill 200, comprising a housing 210, a second rotation output unit 220, a machining tool 20, a bearing 230, and the ultrasonic machining device 10 described above. The second rotation output unit 220 serves as a rotation output device and is connected to the rear end of the cutter body 1 to output torque. A rearwardly extending accommodating chamber 211 is provided on the front end surface of the housing 210. The rear end of the cutter body 1 is accommodated in the accommodating chamber 211 and is connected to the output end of the second rotation output unit 220. The cutter body 1 is connected to the housing 210 via a bearing 230. A transmitting unit 31 is disposed in the accommodating chamber 211 and is connected to the housing 210. A receiving unit 32 is disposed in the accommodating chamber 211 and is fixed to the cutter body 1 and arranged opposite to the transmitting unit 31. Specifically, the machining tool 20 is connected to the ultrasonic transducer 2 via a horn 24.

[0222] Specifically, in this embodiment, the second rotation output unit 220 further includes an extended gripping handle 221 , and the housing 210 is fixedly connected to the second rotation output unit 220 , thereby stabilizing the relative positions of the ultrasonic machining device 10 and the second rotation output unit 220 .

[0223] This specification discloses the invention with reference to the accompanying drawings and also enables those skilled in the art to practice the invention, including making and using any device or system, employing suitable materials, and using any combined methods. The scope of the invention is defined by the claimed technical solutions and includes other examples that occur to those skilled in the art. As long as such other examples include structural elements that are not different from the literal language of the claimed technical solutions, or such other examples contain equivalent structural elements that are not substantially different from the literal language of the claimed technical solutions, such other examples should be deemed to be within the scope of protection determined by the claimed technical solutions.

Claims

1. An upper and lower ring ultrasonic processing device, characterized in that: include: A blade body, the rear end of which is used to connect to the rotary output device, and the front end of which is provided with a mounting cavity; a wireless transmission mechanism, the wireless transmission mechanism comprising a transmitting unit and a receiving unit, the transmitting unit being disposed on an outer peripheral side of the blade body, the receiving unit being disposed on an outer peripheral side of the blade body, the transmitting unit and the receiving unit being disposed opposite each other along the axial direction of the blade body and separated by an air gap, the transmitting unit comprising a transmitting coil and a transmitting magnet for generating a magnetic field based on current in the transmitting coil, and the receiving unit comprising a receiving coil and a receiving magnet for receiving the magnetic field generated by the transmitting unit; and an ultrasonic transducer, the ultrasonic transducer being disposed in the mounting cavity and electrically connected to the receiving unit; The frequency of the electrical signal input to the receiving unit is f Hz, and the air gap magnetic resistance of the wireless transmission mechanism is R δ Henry -1 , the magnetic resistance of the transmitting unit is R 发射 Henry -1 , the magnetic resistance of the receiving unit is R 接收 Henry -1 ; Among them, the apparent power of the transmitting unit is Q 发射 volt-ampere, the peak current passed into the emission unit is I 发射 The number of turns of the transmitting coil is N 发射 , then the above parameters satisfy the relationship: The number of turns of the receiving coil is N 接收 , the apparent power of the receiving unit is Q 接收 volt-ampere, the peak current passed into the receiving unit is I 接收 If , the above parameters satisfy the relationship: K1 is the correction coefficient, 0.5≤K1≤1.5, 2≤N 接收 ≤240, 2≤N 发射 ≤240.

2. The upper and lower ring ultrasonic machining device according to claim 1, characterized in that: The angle at which the launch unit is arranged along the outer circumference of the blade body is θ.

3. The upper and lower ring ultrasonic machining device according to claim 2, characterized in that: θ=2π, the transmitting magnet includes a first annular bottom plate, a first annular inner plate, and a first annular outer plate, the first annular inner plate is connected to the inner side of the first annular bottom plate, the first annular outer plate is connected to the outer side of the first annular bottom plate, a first wire-embedding groove with an opening facing the receiving unit is formed between the first annular bottom plate, the first annular inner plate, and the first annular outer plate, the transmitting coil is arranged around the first annular inner plate along the circumference of the blade body, and the transmitting coil is accommodated in the first wire-embedding groove; wherein, the thickness of the first annular bottom plate is H3 mm, the thickness of the first annular inner plate is b3 mm, the thickness of the first annular outer plate is b4 mm, the length of the transmitting magnet extending along the axial direction of the blade body is H4 mm, the inner diameter of the first annular inner plate is D3 mm, and the outer diameter of the first annular outer plate is D4 mm; The receiving magnet includes a second annular bottom plate, a second annular inner plate and a second annular outer plate, the second annular inner plate is connected to the inner edge of the second annular bottom plate, the second annular outer plate is connected to the outer edge of the second annular bottom plate, and a second wire-embedding groove with an opening facing the transmitting unit is formed between the second annular bottom plate, the second annular inner plate and the second annular outer plate, the receiving coil is arranged around the second annular inner plate along the circumference of the blade body, and the receiving coil is accommodated in the second wire-embedding groove; wherein, the thickness of the second annular bottom plate is H1 mm, the thickness of the second annular inner plate is b1 mm, the thickness of the second annular outer plate is b2 mm, the length of the receiving magnet extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate is D1 mm, and the outer diameter of the second annular outer plate is D2 mm; The relative magnetic permeabilities of the transmitting magnet and the receiving magnet are both u, the vacuum magnetic permeability is u0 Henry / m, the magnetic path area of ​​the second annular inner plate is S1, and the magnetic path area of ​​the second annular outer plate is S2. The relationship between S1 and S2 and the above parameters is as follows: R1 is the magnetic resistance of the second annular inner plate, R2 is the magnetic resistance of the second annular outer plate, R3 is the magnetic resistance of the second annular bottom plate, and the magnetic resistance R of the receiving unit is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3 The magnetic circuit area of ​​the first annular inner plate is S3, and the magnetic circuit area of ​​the first annular outer plate is S4. The relationship between S3 and S4 and the above parameters is as follows: R4 is the magnetic resistance of the first annular inner plate, R5 is the magnetic resistance of the first annular outer plate, R6 is the magnetic resistance of the first annular bottom plate, and the magnetic resistance of the transmitting unit R 发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6。 4. The upper and lower ring ultrasonic machining device according to claim 3, characterized in that: The equivalent magnetic circuit area of ​​the air gap between the second annular inner plate and the first annular inner plate is S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate and the first annular outer plate is S δ2 , R δ1 is the air gap magnetic resistance between the second annular inner plate and the first annular inner plate, R δ2 is the air gap magnetic resistance between the second annular outer plate and the first annular outer plate, F1, F2, F3 and F4 are all edge flux coefficients, and the width of the air gap is δ mm; When b1=b3, then: When b2=b4, then: When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then: When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then: R δ =K2×(R δ1 +R δ2 ) Wherein, K2 is the magnetic resistance correction coefficient, 0.2≤K2≤3.

5. The upper and lower ring ultrasonic machining device according to claim 2, characterized in that: The transmitting magnet includes an arc-shaped bottom plate, an arc-shaped inner plate and an arc-shaped outer plate, the arc-shaped inner plate is connected to the inner side of the arc-shaped bottom plate, the arc-shaped outer plate is connected to the outer side of the arc-shaped bottom plate, the arc-shaped bottom plate, the arc-shaped outer plate and the arc-shaped inner plate are concentrically arranged, and a first buried wire groove with an opening facing the receiving unit is formed between the arc-shaped bottom plate, the arc-shaped inner plate and the arc-shaped outer plate; wherein the thickness of the arc-shaped bottom plate is H3 mm, the thickness of the arc-shaped inner plate is b3 mm, the thickness of the arc-shaped outer plate is b4 mm, the length of the transmitting magnet extending along the axial direction of the blade body is H4 mm, the inner diameter of the arc-shaped inner plate is D3 mm, the outer diameter of the arc-shaped outer plate is D4 mm, and the transmitting coil is arranged around the arc-shaped bottom plate or the arc-shaped outer plate along the circumference of the blade body; The receiving magnet includes a second annular bottom plate, a second annular inner plate and a second annular outer plate, the second annular inner plate is connected to the inner side edge of the second annular bottom plate, the second annular outer plate is connected to the outer side edge of the second annular bottom plate, and a second wire embedding groove with an opening facing the transmitting unit is formed between the second annular bottom plate, the second annular inner plate and the second annular outer plate; wherein, the thickness of the second annular bottom plate is H1 mm, the thickness of the second annular inner plate is b1 mm, the thickness of the second annular outer plate is b2 mm, the length of the receiving magnet extending along the axial direction of the blade body is H2 mm, the inner diameter of the second annular inner plate is D1 mm, the outer diameter of the second annular outer plate is D2 mm, and the receiving coil is arranged around the second annular inner plate along the circumference of the blade body; The relative magnetic permeabilities of the transmitting magnet and the receiving magnet are both u, the vacuum magnetic permeability is u0 Henry / m, the magnetic path area of ​​the second annular inner plate is S1, and the magnetic path area of ​​the second annular outer plate is S2. The relationship between S1 and S2 and the above parameters is as follows: R1 is the magnetic resistance of the second annular inner plate, R2 is the magnetic resistance of the second annular outer plate, R3 is the magnetic resistance of the second annular bottom plate, and the magnetic resistance R of the receiving unit is 接收 The relationship with the above parameters is as follows: R 接收 =R1+R2+R3 The magnetic circuit area of ​​the arc-shaped inner plate is S3, and the magnetic circuit area of ​​the arc-shaped outer plate is S4. The relationship between S3, S4 and the above parameters is as follows: R4 is the magnetic resistance of the arc inner plate, R5 is the magnetic resistance of the arc outer plate, R6 is the magnetic resistance of the arc bottom plate, and the magnetic resistance of the transmitting unit R 发射 The relationship with the above parameters is as follows: R 发射 =R4+R5+R6。 6. The upper and lower ring ultrasonic machining device according to claim 5, characterized in that: The equivalent magnetic circuit area of ​​the air gap between the second annular inner plate and the arc-shaped inner plate is S δ1 The equivalent magnetic circuit area of ​​the air gap between the second annular outer plate and the arc-shaped outer plate is S δ2 , R δ1 is the air gap magnetic resistance between the second annular inner plate and the arc-shaped inner plate, R δ2 is the air gap magnetic resistance between the second annular outer plate and the arc-shaped outer plate, F1, F2, F3 and F4 are all edge flux coefficients, and the width of the air gap is δ mm; When b1=b3, then: When b2=b4, then: When b1>b3, then w1=b1, w2=b3, D=D3; when b3>b1, then w1=b3, w2=b1, D=D1, then: When b2>b4, then w1=b2, w2=b4, D=D4; when b4>b2, then w1=b4, w2=b2, D=D2, then: R δ =K2×(R δ1 +R δ2 ) Wherein, K2 is the magnetic resistance correction coefficient, 0.2≤K2≤3.

7. The upper and lower ring ultrasonic machining device according to any one of claims 1 to 6, characterized in that: It also includes a launching frame and a receiving frame, which are arranged opposite to each other along the axial direction of the blade body. A first receiving groove is provided on one end face of the launching frame facing the receiving frame, and a second receiving groove is provided on one end face of the receiving frame facing the launching frame. The launching unit is accommodated in the first receiving groove, and the receiving unit is accommodated in the second receiving groove. The outer peripheral surface of the blade body is provided with a limiting convex ring protruding along its radial direction, and the receiving frame is sleeved and fixed on the outer periphery of the blade body and abuts against the rear end face of the limiting convex ring.

8. The upper and lower ring ultrasonic machining device according to any one of claims 1 to 6, characterized in that: The width of the air gap is δ mm, 0.1≤δ≤3.

9. The upper and lower ring ultrasonic machining device according to any one of claims 1 to 6, characterized in that: It also includes a variable amplitude rod, and the ultrasonic transducer includes a piezoelectric vibrator, a screw and a back cover. The screw is arranged in the installation cavity and extends along the axial direction of the blade body. The rear end of the variable amplitude rod is fixedly connected to the screw. The piezoelectric vibrator is sleeved on the screw. The rear end face of the variable amplitude rod protrudes from the outer peripheral surface of the screw along the radial direction of the screw. The back cover is threadedly connected to the screw and cooperates with the rear end face of the variable amplitude rod to limit the piezoelectric vibrator.

10. The upper and lower ring ultrasonic machining device according to claim 9, characterized in that: It also includes a collet and a nut for being sleeved on the outer periphery of the processing tool. The front end of the amplitude change rod is provided with a socket extending toward the rear end. The inner peripheral surface of the socket is tapered with a diameter gradually decreasing from front to back. The collet can be inserted into the socket in conjunction with the processing tool. The nut can be threadedly connected to the amplitude change rod and press against the collet to lock the processing tool.

11. The upper and lower ring ultrasonic machining device according to claim 10, characterized in that: The collet comprises a conical cylinder section adapted to the insertion hole, and the collet has a plurality of first deformation grooves spaced apart along its circumference, wherein the first deformation grooves extend to or extend through the conical cylinder section; The first deformation groove connects the outer side surface and the inner side surface of the collet. The first deformation groove extends from the front end surface of the collet along the axial direction of the collet backward through the conical cylinder section and extends toward the rear end surface of the collet. There is a first gap between the rear groove surface of the first deformation groove and the rear end surface of the collet.

12. The upper and lower ring ultrasonic machining device according to claim 11, characterized in that: The collet has a plurality of second deformation grooves spaced apart along its circumference, the second deformation grooves extending to or extending through the conical cylinder section, and the second deformation grooves are spaced apart from and staggered with the first deformation grooves; A front groove surface of the second deformation groove has a second interval with the front end surface of the collet, and the second deformation groove extends and passes through the rear end surface of the collet.

13. The upper and lower ring ultrasonic machining device according to any one of claims 1 to 6, characterized in that: The transmitting magnet is made of any one of ferrite, neodymium iron boron, high-frequency ceramic material, powder metallurgy material, amorphous and nanocrystalline alloy, and cobalt iron; the receiving magnet is made of any one of ferrite, neodymium iron boron, high-frequency ceramic material, powder metallurgy material, amorphous and nanocrystalline alloy, and cobalt iron.

14. Ultrasonic spindle, characterized in that It comprises a first rotation output unit and the upper and lower ring ultrasonic machining device according to any one of claims 1 to 13, wherein the rear end of the cutter body is assembled on the first rotation output unit.

15. Ultrasonic machine tool, characterized in that The ultrasonic spindle comprises a machine tool body and the ultrasonic spindle according to claim 14, wherein the ultrasonic spindle is mounted on the machine tool body.

16. Ultrasonic drill, characterized in that It includes a shell, a second rotary output unit, a bearing and the upper and lower ring ultrasonic processing device according to any one of claims 1 to 6, the front end face of the shell is provided with a rearward extending accommodating cavity, the rear end of the blade body is accommodated in the accommodating cavity and is connected to the output end of the second rotary output unit, and the blade body is connected to the shell through the bearing, the transmitting unit is arranged in the accommodating cavity and connected to the shell, and the receiving unit is arranged in the accommodating cavity and connected to the blade body.

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