CN103920953A - Universal ultrasonic-assisted inner jetted dielectric electric discharge machining (EDM) milling tool head and manufacturing method thereof - Google Patents

Abstract

The present invention relates to the field of machinery, in particular to a general-purpose ultrasonic-assisted internal flushing liquid electric discharge milling tool head, which includes an ultrasonic vibration part, a tool handle and a tool rod, and the tool handle is fixedly connected with an inner sleeve, and the inner sleeve is fixed Connected with a horn, the bottom end of the horn is equipped with a knife bar, and electrodes are installed on the knife bar. The axes of the knife handle, horn, and knife bar are coincident. There is a jacket outside the inner sleeve, and the jacket extends to the middle of the horn. , A cavity III is formed between the jacket and the horn, the end of the cavity III is provided with a mechanical water seal, and the horn is provided with a discharge medium circulation channel. The invention has the advantages of high coaxiality, high rotation speed and simple structure.

Description

A general-purpose ultrasonic-assisted internal flushing liquid electric discharge milling tool head and its manufacturing method

technical field

The invention relates to the field of machinery, in particular to a general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head and a manufacturing method thereof.

Background technique

Ultrasonic vibration is essentially a mechanical vibration with small displacement and high frequency, usually a few microns to hundreds of microns, and above 20KHz. It is widely used because of its characteristics of cavitation, suspension, reflection, refraction, energy transmission and signal transmission. In the field of EDM, superimposing ultrasonic vibration on workpieces or tools for EDM has achieved good results in the field of micro-EDM. It has been proved that ultrasonic vibration can help improve the discharge frequency of micro-EDM and improve Discharge conditions promote the discharge of electro-corrosion products, and ultimately improve the processing effect and efficiency; in general EDM, ultrasonic vibration has little effect on the arcing caused by charging and discharging due to the small displacement, but it can improve surface roughness, Improving the discharge of electro-corrosion products has a positive impact.

On the other hand, EDM machining technology is a new forming EDM technology that appeared in the 1990s. The tool electrode used in this processing technology is usually in the shape of a simple rod or tube. The tool electrode moves relative to the workpiece under the action of the control system, and the workpiece of the desired shape can be processed. EDM machining technology can achieve the purpose of traditional forming EDM, save the time and cost of electrode design and manufacturing of forming tools, and is an EDM technology with extremely high processing flexibility.

In order to further improve the effect and speed of EDM processing technology, ultrasonic-assisted EDM processing technology has been proposed and studied, but the spindle head suitable for ultrasonic-assisted EDM and with internal flushing function has not been commercialized. Su Shupeng of Shandong University disclosed an ultrasonic-assisted EDM spindle head in his doctoral dissertation "EDM Technology and Mechanism Research Based on Gas Medium", as shown in Figure 5, including the spindle support system, tool electrode rotation system, ultrasonic vibration device and medium input system, wherein the main shaft support system is mainly composed of inner main shaft 17, outer main shaft 18, angular contact bearing A12 and angular contact bearing B19; the tool electrode rotation system is mainly composed of inner main shaft 17 passing through the synchronous pulley 20 The synchronous belt is connected with the DC speed regulating electrode to realize the high-speed rotation of the main shaft; the ultrasonic vibration device is mainly composed of a piezoelectric ceramic transducer 10, a horn 5, a front block 7 and a rear block 11; the medium input system is mainly composed of a medium The input pipe 1, the pipe joint 2, the sleeve 6 and the O-ring 3 are composed. The ultrasonic-assisted electric spark milling spindle head can realize the liquid and ventilation of the electrode, but there are the following problems: first, the ultrasonic horn is only positioned by the flange, and the coaxiality is difficult to guarantee; second, the horn side and the The center hole is inserted into a cavity through the upper and lower rubber sealing rings. The cavity is stationary and the horn rotates. The pressure gas or liquid is introduced into the cavity and flows through the side and the center hole of the horn, and finally from the tool electrode. Outflow, the frictional resistance of the rubber ring to the horn is large, resulting in a low speed of the entire system; third, the tool electrode is connected to the bottom end of the horn through threads, and the tool electrode needs to be specially prepared.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned technical problems, and provide a general-purpose ultrasonic-assisted internal flushing liquid electric discharge milling tool head with high coaxiality, high rotation speed and simple structure.

The technical solution of the present invention is: a general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head, which includes an ultrasonic vibration part, and also includes a tool handle and a tool bar. The tool handle is fixedly connected with an inner sleeve, and the inner sleeve is fixedly connected with Horn, the bottom end of the horn is provided with a knife bar, and electrodes are installed on the knife bar. The axes of the knife handle, horn, and knife bar are coincident. A cavity III is formed between the horn and the horn, and a mechanical water seal is provided at the end of the cavity III, and a discharge medium circulation channel is arranged inside the horn.

By setting the tool handle and inner sleeve at the front end of the horn and setting the tool bar at the bottom end of the horn, and making the axes of the tool handle, horn and tool bar coincide, even if the rotation center of the horn is in line with the tool handle It coincides with the center of the cutter bar, and has high coaxiality; a cavity III is set between the jacket and the horn, and a mechanical water seal is set at the end of the cavity III, which can reduce the frictional resistance to the horn and increase the amplitude. The rotation speed of the rod; at the same time, there is a discharge medium circulation channel inside the horn, which can realize the liquid flow of the electrode.

Preferably, the cutter bar is provided with a mounting hole, and a leak-proof rubber ring is provided in the mounting hole, and the electrode is fixed in the mounting hole through a chuck and a pressure cap, and a horizontal through hole is provided in the middle section of the horn through which The middle part of the hole communicates with the blind hole extending to the installation hole, and the through hole and the blind hole form a discharge medium circulation channel.

Preferably, the mechanical water seal is a ceramic graphite mechanical water seal. The ceramic graphite mechanical water seal includes a graphite part provided with a rubber inner sleeve and a ceramic part provided with silicon carbide. The graphite part is respectively arranged on the top of the horn and the horn At the position of 3/4 of the ultrasonic wavelength of the rod, the ceramic parts are respectively arranged at the upper end and the lower end of the cavity III.

Preferably, the ultrasonic vibration part includes a rear distribution block, a transducer and a horn, the rear distribution block and the transducer are arranged in a cavity inside the inner sleeve, and the rear distribution block, the transducer and the horn pass through The bolts are fixedly connected, and the outer surface of the inner sleeve is provided with a conductive ring, which is connected with the transducer and the horn through a wire, and a carbon brush is provided on the outer sleeve, and the carbon brush is connected with the conductive ring.

Furthermore, the length of the rear block is 1/4 of the ultrasonic wave length, and the length of the horn is an integral multiple of the half wave length of the ultrasonic wave.

Preferably, carbon brushes are provided at four different positions on the outer side of the jacket, and the number of carbon brushes provided at each position is three groups. The carbon brushes are connected to the ultrasonic circuit and the electric spark circuit, and a high conductivity Graphite, the carbon brush is provided with an insulating shell outside.

Furthermore, the transducer is a piezoelectric ceramic transducer, and there are six pieces of piezoelectric ceramics, four of which are connected to the conductive ring through wires.

Preferably, the inner sleeve is made of polycarbonate plastic, the outer sleeve is made of aluminum alloy, and a vertical stepped hole is provided inside the outer sleeve. The upper part of the stepped hole and the upper part of the inner sleeve form a cavity I, and the cavity I is provided with a bearing , the middle part of the stepped hole and the lower part of the inner sleeve and the upper part of the horn form a cavity II, the lower part of the stepped hole and the middle part of the horn form a cavity III, and a quick joint is provided on the outside of the jacket, the quick joint is connected with a hose, and the discharge medium passes through the hose Enter cavity III.

Preferably, a connecting hole is provided on the outer side of the casing, a fixing plate is arranged on the connecting hole, and the fixing plate is arranged on the main shaft of the machine tool.

A method for making the above-mentioned universal ultrasonic-assisted internal flushing liquid electric discharge milling tool head, comprising the following steps:

(1) The ultrasonic vibration part is formed by connecting the piezoelectric ceramic sheet, the processed rear block and the horn with only the processed flange through bolts;

(2) Fix the ultrasonic vibration part in step (1) on the inner sleeve through the flange plate and stainless steel bolts, fix the inner sleeve on the tool handle through the flange plate and stainless steel bolts, and install the wire at the same time;

(3) Based on the tool handle, the horn is processed on the turning-drilling machine tool, so that the rotation center of the horn coincides with the center of the tool bar after processing;

(4) Install bearings and conductive rings on the outer side of the inner sleeve, and connect the wires and conductive rings by welding;

(5) Install the mechanical water seal and jacket one by one, and then tighten the hexagonal positioning nut;

(6) Fix the tool handle on the machine tool spindle, and fix the jacket on the side of the machine tool spindle through the fixing plate;

(7) Connect the carbon brush with the ultrasonic circuit and the electric spark circuit, and connect the quick connector with the liquid circulation system;

(8) Install a leak-proof rubber ring in the mounting hole of the cutter bar, and fix the electrode to the cutter bar at the bottom of the horn through the chuck and the pressure cap.

The beneficial effects of the present invention are: by making the axes of the tool handle, the horn and the tool bar coincide, the coaxiality of the entire tool head can be high; The end of III is equipped with a mechanical water seal, which can reduce the impact on ultrasonic transmission while increasing the rotation speed of the horn; in addition, the general-purpose ultrasonic-assisted internal flushing liquid EDM tool head of the present invention can be installed by a general fixture. Clamped on the main shaft of EDM machine tool or general CNC milling machine, it realizes the internal flushing liquid EDM machining under the assistance of ultrasonic, which has the advantages of strong versatility, simple structure and low cost.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the present invention.

Fig. 3 is a schematic diagram of the installation structure of the present invention.

Fig. 4 is a partially enlarged schematic diagram of the installation of the present invention.

Fig. 5 is a schematic structural diagram of the prior art.

In the figure, 1. Knife handle, 2. Inner sleeve, 3. Outer coat, 4. Carbon brush, 5. Quick connector, 6. Mechanical water seal, 7. Knife rod, 8. Bearing, 9. Horn, 10. Conductive ring, 11, leak-proof rubber ring, 12, hexagonal positioning nut, 13, wire, 14, fixing plate, 15, electrode, 16, cavity III, 17, cavity II, 18, cavity I, 19, installation Hole, 20, transducer, 21, rear matching block, 22, discharge medium circulation channel.

Detailed ways

The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a general-purpose ultrasonic-assisted internal flushing EDM tool head of the present invention includes an ultrasonic vibration part, a tool handle 1 and a tool bar 7, and the tool handle 1 is fixedly connected with an inner sleeve 2. The inner sleeve 2 is fixedly connected with the horn 9, and the bottom end of the horn 9 is provided with a knife bar 7, and the electrode 15 is installed on the knife bar 7, and the axes of the knife handle 1, the horn 9, and the knife bar 7 coincide. Outer sleeve 3 is provided on the outside of inner sleeve 2, and outer sleeve 3 extends to the middle section of horn 9. A cavity III16 is formed between outer sleeve 3 and horn 9, and a mechanical water seal 6 is provided at the end of cavity III16. 9 is provided with a discharge medium circulation channel 22 inside.

By setting the tool handle and inner sleeve at the front end of the horn and setting the tool bar at the bottom end of the horn, and making the axes of the tool handle, horn and tool bar coincide, even if the rotation center of the horn is in line with the tool handle It coincides with the center of the cutter bar, and has high coaxiality; a cavity III is set between the jacket and the horn, and a mechanical water seal is set at the end of the cavity III, which can reduce the frictional resistance to the horn and increase the amplitude. The rotation speed of the rod; at the same time, there is a discharge medium circulation channel inside the horn, which can realize the liquid flow of the electrode.

In the embodiment of the present invention, in order to facilitate the installation of the electrode, a mounting hole 19 is provided on the knife rod 7, and a leak-proof rubber ring 11 is provided in the mounting hole 19, and the electrode 15 is fixed in the mounting hole through a chuck and a pressure cap. 19, the installation is convenient and reliable; in addition, the middle section of the horn 9 is processed with a through hole in the horizontal direction, and the middle part of the through hole has a blind hole to the installation hole 19, and the through hole and the blind hole constitute the passage for the discharge medium to enter and exit the horn 9 .

Specifically, the handle 1 is made of stainless steel, and the size standard adopts Mohs handle BT40 or BT50 to obtain the widest range of applications. The handle 1 is fastened to the inner sleeve 2 with M4 stainless steel screws through the bottom flange structure.

The inner sleeve 2 is made of polycarbonate plastic (PC), which has good mechanical properties and insulation properties; the outer interference fit of the inner sleeve 2 is two bearings 8, and the bearing 8 is Harbin bearing 6814ZZ. The specific parameters are: iron seal, inner diameter 70mm , outer diameter 90mm, thickness 10mm; three conductive rings 10 are installed at the bottom of the inner sleeve 2, and the material of the conductive ring 10 is brass. The negative pole and the horn 9 are connected.

The ultrasonic vibration part is composed of 304 stainless steel rear block 21 on the top, six piezoelectric ceramic transducers 20, and 304 stainless steel horn 9. In addition, the material of the horn 9 can also be titanium alloy, which has better performance. Excellent acoustic characteristics, higher conductivity to ultrasonic vibration, can improve the stability of the ultrasonic vibration part and increase the amplitude. The top of the horn 9 is a flange, which is installed at the bottom of the inner sleeve 2 through M4 stainless steel bolts; the height of the stainless steel rear matching block 21 is (n×1/2+1/4) the ultrasonic wavelength, specifically, in this embodiment 1/4 ultrasonic wavelength is selected, the piezoelectric ceramic transducer 20 adopts y43-Φ40×Φ15×5 produced by Shangchao, and the resonance frequency is 38.7KHz. In order to achieve the best resonance effect, the length of the horn 9 is half of the ultrasonic wavelength Integer multiple, the whole wavelength is taken in this embodiment, which is 129.2mm.

The piezoelectric ceramic transducer 20 has six pieces in total, and the middle four pieces are actually used. These four pieces of piezoelectric ceramics are respectively connected to the two external conductive rings 10 through wires 13, and the other conductive ring 10 is connected to the luffing ring through the wire 13. The rods 9 are connected; the electric spark discharge current passes through the conductive ring 10, the wire 13, the horn 9, and the ER11 chuck to guide the electrode 15 to realize the electric spark discharge; the ultrasonic wave and the electric spark are isolated by the present invention, and the jacket 3 is not charged.

Ultrasonic current and electric spark current are poured into the conductive ring 10 through three groups of carbon brushes 4 installed on the side of the outer casing 3 .

Under the situation that electric spark discharge and ultrasonic vibration need more power, bigger current, carbon brush 4 is distributed on the four sides of overcoat 3, and each face places three groups of carbon brushes 4, is equivalent to each conductive ring 10 and four 4 carbon brushes are connected, and the withstand current can be enhanced to 4 times of the original.

The mechanical water seal 6 is a ceramic graphite mechanical water seal 301-40, which is fixed on the horn 9 through the graphite part with rubber inner sleeve, and the part with silicon carbide ceramics is fixed on the outside, using silicon carbide and graphite The friction of the horn plays the role of sealing the liquid while the horn 9 is rotating. Specifically, the rotating speed of the horn 9 can reach 3000 rpm; At the 3/4 ultrasonic wavelength of the horn 9, the reason for such setting is that the amplitude of these two places is small, so the damage to the mechanical water seal 6 is small, and the influence on the transmission of ultrasonic vibration is small; the ceramic parts are respectively arranged in the air. The upper end and the lower end of the cavity III16 are used to seal the discharge medium in the cavity III16 to prevent leakage.

The jacket 3 is machined from 6061-T6 aluminum alloy. There are four threaded holes on the outside to fix the jacket 3 to the spindle of the machine tool. The inside is a vertical stepped hole. The upper part of the stepped hole and the upper part of the inner sleeve 2 form a cavity I18, and the cavity I18 There are two bearings 8 inside, the middle part of the stepped hole, the lower part of the inner sleeve 2 and the upper part of the horn 9 form a cavity II17, the lower part of the stepped hole and the middle part of the horn 9 form a cavity III16, and the upper and lower parts of the cavity III16 are installed with machinery The silicon carbide part of the water seal 6 cooperates with the graphite part of the mechanical water seal 6 on the horn 9 respectively, and there is a G1/8 threaded hole on the side of the cavity III16 for installing the quick connector 5 .

The model of the quick connector 5 is PC8-01, and it is connected to a hose with an outer diameter of 8 mm. The hose is connected to the water pump, and the water pump supplies the discharge medium liquid to the cavity III16. The horizontal through hole and the blind hole reaching the mounting hole 19 supply liquid to the electrode 15, and the electrode 15 generally adopts a brass or red copper tubular electrode with a diameter of 1-7 mm.

After the graphite part of the mechanical water seal 6 is installed at the bottom of the horn 9 at the 3/4 wavelength, in order to ensure that the graphite part does not slip off, the hexagonal positioning nut 12 is fastened to the thread on the horn 9; the lower end of the horn is according to The ER11 tool holder is dimensioned and processed with a mounting hole 19. Of course, in order to increase the applicable range, the tool holder can also be one of ER16, ER20, ER25 or ER32. The leak-proof rubber ring 11 is installed inside the mounting hole 19, and the electrode is installed. At 15 o'clock, the electrode 15 is inserted into the hole in the middle of the leak-proof rubber ring 11, so that the liquid in the cavity III16 finally flows out through the hole in the middle of the electrode 15, so as to achieve the purpose of internal flushing.

The present invention is applied in the EDM machine tool or the EDM machine tool transformed from the CNC milling machine. In addition to fixing the tool holder 1 on the main shaft, the fixed plate 14 can also be made according to the size of the main shaft of the machine tool. One side of the fixed plate 14 and the outer sleeve 3 The threaded holes on one side are connected, and the other side is fixed on the main shaft of the machine tool, so that the jacket 3 moves with the main shaft in X, Y, and Z directions, but does not rotate; The pole is connected, and the workpiece to be processed is connected to the other pole of EDM. In addition, those skilled in the art can easily know from the present invention that the present invention can also be applied to the field of ultrasonic-assisted internal flushing electrolytic milling, the field of ultrasonic-assisted internal flushing electrolytic milling, ultrasonic-assisted internal flushing field of short arc machining.

Specifically, the method for making and using the ultrasonic-assisted internal flushing liquid electric discharge milling tool head of the present invention includes the following steps:

Step 1. Connect the piezoelectric ceramic sheet with the processed post-matching block and the horn with only the processed flange plate through bolts to form the ultrasonic vibration part;

Step 2: Fix the ultrasonic vibration part on the inner sleeve 2 through the flange plate and M4 stainless steel bolts, and fix the inner sleeve 2 on the handle 1 through the flange plate and M4 stainless steel bolts, and install the wire 13 at the same time;

Step 3: Based on tool holder 1, process the horn on the turning-drilling compound machine tool, so that the rotation center of the horn coincides with the center of the ER11 tool bar, and the coaxiality is high;

Step 4, install the bearing 8 and the conductive ring 10 on the outer side of the inner sleeve 2, and connect the wire 13 and the conductive ring 10 by welding;

Step 5. Install the mechanical water seal 6 and the jacket 3 one by one, and finally tighten the hexagonal positioning nut 12 to complete the installation;

Step 6. When in use, fix the tool handle 1 on the spindle of the machine tool, and fix the jacket 3 on the side of the spindle of the machine tool through the fixing plate 14;

Step 7, connect the carbon brush 4 with the ultrasonic circuit and the electric spark circuit, and connect the quick connector 5 with the liquid circulation system;

Step 8: Install the leak-proof rubber ring 11 in the installation hole 19 of the cutter bar 7, fix the electrode to the ER11 cutter bar at the bottom end of the horn through the ER11 chuck and the pressure cap, and then process.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims (10)

1. A general-purpose ultrasonic-assisted internal flushing liquid electric discharge milling tool head, including an ultrasonic vibration part, is characterized in that: it also includes a tool handle and a tool bar, and the tool handle is fixedly connected with an inner sleeve, and the inner sleeve is fixedly connected with a change. There is a tool bar at the bottom of the horn, and electrodes are installed on the tool bar. The axes of the tool handle, horn and tool bar are coincident. There is a jacket outside the inner sleeve, and the jacket extends to the middle of the horn. A cavity III is formed between the horns, a mechanical water seal is provided at the end of the cavity III, and a discharge medium circulation channel is arranged inside the horn. 2. A general-purpose ultrasonic-assisted internal flushing liquid EDM tool head as claimed in claim 1, characterized in that: said cutter rod is provided with a mounting hole, and a leak-proof rubber ring is provided in the mounting hole, and the electrode passes through The collet and the pressure cap are fixed in the installation hole, and the middle section of the horn is provided with a horizontal through hole, and the middle part of the through hole communicates with the blind hole extending to the installation hole, and the through hole and the blind hole form a discharge medium circulation channel. 3. A general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head as claimed in claim 1, characterized in that: the mechanical water seal is a ceramic graphite mechanical water seal, and the ceramic graphite mechanical water seal includes a rubber inner The graphite part of the sleeve and the ceramic part provided with silicon carbide, the graphite part is respectively arranged at the top of the horn and the 3/4 ultrasonic wavelength position of the horn, and the ceramic part is respectively arranged at the upper end and the lower end of the cavity III. 4. A general-purpose ultrasonic-assisted internal flushing liquid electric discharge milling tool head according to any one of claims 1 to 3, characterized in that: the ultrasonic vibration part includes a rear matching block, a transducer and a horn, The rear matching block and the transducer are arranged in the inner cavity of the inner sleeve, the rear matching block, the transducer and the horn are connected by bolts, the outer surface of the inner sleeve is provided with a conductive ring, and the conductive ring passes through the wire and the transducer It is connected with the horn, and a carbon brush is arranged on the jacket, and the carbon brush is connected with the conductive ring. 5. A general-purpose ultrasonic-assisted internal flushing liquid EDM tool head as claimed in claim 4, characterized in that: the length of the rear matching block is 1/4 of the ultrasonic wave length, and the length of the horn is 1/4 of the ultrasonic wave length. Integer multiples of half wavelength. 6. A general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head as claimed in claim 4, characterized in that: carbon brushes are respectively provided at four different positions on the outer side of the outer casing, and carbon brushes are provided at each position The quantity is three groups, the carbon brush is connected with the ultrasonic circuit and the electric spark circuit, the interior of the carbon brush is provided with high-conductivity graphite, and the exterior of the carbon brush is provided with an insulating shell. 7. A general-purpose ultrasonic-assisted internal flushing liquid EDM tool head as claimed in claim 4, characterized in that: the transducer is a piezoelectric ceramic transducer, and there are six piezoelectric ceramics, of which four The sheet is connected to the conductive ring through a wire. 8. A general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head as claimed in claim 1, characterized in that: the inner sleeve is made of polycarbonate plastic, the outer sleeve is made of aluminum alloy, and the outer sleeve is equipped with There is a vertical stepped hole, the upper part of the stepped hole and the upper part of the inner sleeve form a cavity I, the cavity I is equipped with a bearing, the middle part of the stepped hole, the lower part of the inner sleeve and the upper part of the horn form a cavity II, the lower part of the stepped hole and the horn A cavity III is formed in the middle section, and a quick connector is provided on the outer side of the jacket, and the quick connector is connected with a hose, and the discharge medium enters the cavity III through the hose. 9. A general-purpose ultrasonic-assisted internal flushing liquid electric spark milling tool head as claimed in claim 1, characterized in that: a connecting hole is provided on the outer side of the outer casing, and a fixing plate is arranged on the connecting hole, and the fixing plate is arranged on the machine tool on the spindle. 10. A method of making the universal ultrasonic-assisted internal flushing liquid electric discharge milling tool head as claimed in claim 1, comprising the following steps: (1) The ultrasonic vibration part is formed by connecting the piezoelectric ceramic sheet, the processed rear block and the horn with only the processed flange through bolts; (2) Fix the ultrasonic vibration part in step (1) on the inner sleeve through the flange plate and stainless steel bolts, fix the inner sleeve on the tool handle through the flange plate and stainless steel bolts, and install the wire at the same time; (3) Based on the tool handle, the horn is processed on the turning-drilling machine tool, so that the rotation center of the horn coincides with the center of the tool bar after processing; (4) Install bearings and conductive rings on the outer side of the inner sleeve, and connect the wires and conductive rings by welding; (5) Install the mechanical water seal and jacket one by one, and then tighten the hexagonal positioning nut; (6) Fix the tool handle on the machine tool spindle, and fix the jacket on the side of the machine tool spindle through the fixing plate; (7) Connect the carbon brush with the ultrasonic circuit and the electric spark circuit, and connect the quick connector with the liquid circulation system; (8) Install a leak-proof rubber ring in the mounting hole of the cutter bar, and fix the electrode to the cutter bar at the bottom of the horn through the chuck and the pressure cap.