CN103920953A - Universal ultrasonic-assisted inner jetted dielectric electric discharge machining (EDM) milling tool head and manufacturing method thereof - Google Patents
Universal ultrasonic-assisted inner jetted dielectric electric discharge machining (EDM) milling tool head and manufacturing method thereof Download PDFInfo
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Abstract
The invention relates to the field of machinery, in particular to a universal ultrasonic-assisted inner jetted dielectric electric discharge machining (EDM) milling tool head. The universal ultrasonic-assisted inner jetted dielectric EDM milling tool head comprises an ultrasonic vibration portion, a knife handle and a knife bar. The knife handle is fixedly connected with an inner sleeve. The inner sleeve is fixedly connected with an amplitude-change pole. The bottom end o the amplitude-change pole is provided with the knife bar. An electrode is installed on the knife bar. The axis of the knife handle, the axis of the amplitude-change pole and the axis of the knife bar are coincident. An outer sleeve is arranged outside the inner sleeve and extends to the middle section of the amplitude-change pole. A cavity III is formed between the outer sleeve and the amplitude-change pole. The end of the cavity III is provided with a mechanical water seal. The interior of the amplitude-change pole is provided with a discharge medium circulating channel. The universal ultrasonic-assisted inner jetted dielectric EDM milling tool head has the advantages of being high in coaxiality, high in rotational speed and simple in structure.
Description
Technical field
The present invention relates to mechanical field, relate to particularly in a kind of universal ultrasonic assisting and rush liquid electric spark milling tool heads and preparation method thereof.
Background technology
Ultrasonic vibration is a kind of little displacement, high-frequency in essence, and normally several microns to hundreds of micron, more than 20KHz mechanical oscillation, have the characteristics such as cavitation, suspension, reflection, refraction, transferring energy and signal be subject to extensive use because of it.In electric spark machining field, carry out spark machined to workpiece or instrument stack ultrasonic vibration and aspect fine electric spark manufacture field, obtaining good effect, prove ultrasonic vibration, contribute to promote the discharge frequency of fine electric spark processing, improve discharging condition, promote the discharge of galvanic corrosion product, finally promoted processing effect and efficiency; Aspect common spark machined, ultrasonic vibration is because displacement is less, little to discharging and recharging the arcing effect of generation, but promoting surface roughness, the aspect such as discharge of improving galvanic corrosion product has active influence.
On the other hand, electric spark milling process technology is the novel shaping spark erosion technique occurring the nineties in 20th century.The tool-electrode that this process technology is used is generally simple bar-shaped or tubulose, and tool-electrode relative workpiece under the effect of control system does building motion, can process the workpiece of required form.Electric spark milling process technology can realize the object of traditional shaping spark machined, has saved time and the cost of forming tool electrode design and manufacture, is the high spark erosion technique of a kind of processing flexibility.
In order further to promote effect and the speed of electric spark milling process technology, ultrasound auxiliary electric spark Milling Process technology is suggested and studies, but suitable ultrasound auxiliary electric spark milling, fails commercialization with the interior main tapping that rushes liquid function always.Friend Su Shu of Shandong University discloses a kind of ultrasound auxiliary electric spark milling spindle head in its doctorate paper " the electric spark milling process technology based on gas medium and mechanism research ", as shown in Figure 5, comprise main shaft support system, tool-electrode rotary system, ultrasonic vibration installation and medium input system, wherein main shaft support system is mainly made up of inner main axis 17, outer main shaft 18, angular contact bearing A12 and angular contact bearing B19; Tool-electrode rotary system is mainly connected with DC speed regulation electrode by Timing Belt through synchronous pulley 20 by inner main axis 17, realizes the High Rotation Speed of main shaft; Ultrasonic vibration installation mainly by piezoelectric ceramic transducer 10, ultrasonic transformer 5, front join piece 7 and after join piece 11 and form; Medium input system is mainly made up of medium input pipe 1, pipe joint 2, sleeve 6 and O-ring seals 3.This ultrasound auxiliary electric spark milling spindle head can be realized logical liquid, the ventilation of electrode, but has following problem: the one,, ultrasonic amplitude transformer only relies on ring flange location, and axiality is difficult to ensure; The 2nd,, ultrasonic transformer side and center drilling, insert a cavity by upper and lower two rubber seal, static and the ultrasonic transformer of cavity rotates, in cavity, pass into pressed gas or liquid flow through side and the centre bore of ultrasonic transformer, finally from tool-electrode, flow out, rubber ring is large to the frictional resistance of ultrasonic transformer, causes whole system rotating speed lower; The 3rd,, tool-electrode is threaded connection in ultrasonic transformer bottom, need to prepare specially tool-electrode.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, provide in universal ultrasonic auxiliary that a kind of axiality is high, rotary speed is high, simple in structure and rush liquid electric spark milling tool heads.
Technical scheme of the present invention is: in a kind of universal ultrasonic assisting, rush liquid electric spark milling tool heads, comprise ultrasonic vibration part, also comprise handle of a knife and knife bar, described handle of a knife is fixed with inner sleeve, inner sleeve is fixed with ultrasonic transformer, ultrasonic transformer bottom is provided with knife bar, electrode is installed on knife bar, the dead in line of handle of a knife, ultrasonic transformer, knife bar, outside of inner cover is provided with overcoat, and overcoat extends to ultrasonic transformer stage casing, is formed with cavity III between overcoat and ultrasonic transformer, the end of cavity III is provided with mechanical water seal, and ultrasonic transformer inside is provided with discharge medium circulation passage.
By handle of a knife and inner sleeve being set at the front end of ultrasonic transformer, in the bottom of ultrasonic transformer, knife bar is set, and makes the dead in line of handle of a knife, ultrasonic transformer and knife bar, even the center superposition of the pivot of ultrasonic transformer and handle of a knife and knife bar, axiality is high; Cavity III is set between overcoat and ultrasonic transformer and in the end of cavity III, mechanical water seal is set, can reduce the frictional resistance to ultrasonic transformer, improve the rotary speed of ultrasonic transformer; Meanwhile, be provided with discharge medium circulation passage in ultrasonic transformer inside, can realize the logical liquid of electrode.
Preferably, described knife bar is provided with installing hole, in installing hole, be provided with leakproof rubber ring, electrode is fixed in installing hole by chuck and pressure cap, in ultrasonic transformer, intersegmental part is provided with the through hole of horizontal direction, through hole middle part communicates with the blind hole that extends to installing hole, described through hole and blind hole composition discharge medium circulation passage.
Preferably, described mechanical water seal is ceramic graphite mechanical water envelope, pottery graphite mechanical water package is drawn together the graphite part that is provided with rubber inner sleeve and the ceramic segment that is provided with carborundum, graphite part is located at respectively ultrasonic transformer top and ultrasonic transformer 3/4 ultrasonic wave wavelength position, and ceramic segment is located at respectively upper end and the bottom of cavity III.
Preferably, after comprising, described ultrasonic vibration part joins piece, transducer and ultrasonic transformer, after join piece and transducer is located in the cavity of inner sleeve inside, after join piece, transducer and ultrasonic transformer and be connected by bolt, lining the outer surface of is provided with conducting ring, conducting ring is connected with ultrasonic transformer with transducer by wire, puts outward and is provided with carbon brush, and carbon brush is connected with conducting ring.
Further, the length of joining piece after described is 1/4 of ultrasonic wave wavelength, and the length of ultrasonic transformer is the integral multiple of ultrasonic wave half-wavelength.
Preferably, four diverse location places, described overcoat outside are respectively equipped with carbon brush, and the quantity that each position arranges carbon brush is three groups, and carbon brush is connected with ultrasonic circuit and electric spark circuit, and carbon brush inside is provided with high conductivity graphite, and carbon brush outside is provided with insulation shell.
Further, described transducer is piezoelectric ceramic transducer, and piezoelectric ceramics has six, and wherein four are connected with conducting ring by wire.
Preferably, described inner sleeve is made up of polycarbonate plastic, overcoat is made up of aluminium alloy, and overcoat inside is provided with vertical shoulder hole, and cavity I is formed at shoulder hole top and inner sleeve top, in cavity I, be provided with bearing, shoulder hole middle part forms cavity II with inner sleeve bottom and ultrasonic transformer top, and shoulder hole bottom and ultrasonic transformer stage casing form cavity III, and overcoat outside is provided with snap joint, snap joint is connected with flexible pipe, and discharge medium enters cavity III by flexible pipe.
Preferably, described overcoat outside is provided with connecting hole, and connecting hole is provided with fixed head, and fixed head is located on machine tool chief axis.
Make a method of rushing liquid electric spark milling tool heads in above-mentioned universal ultrasonic assisting, comprise the following steps:
(1) ultrasonic transformer of, joining piece by bolt by piezoelectric ceramic piece, after manufactured and only processing ring flange connects to form ultrasonic vibration part;
(2), put in the ultrasonic vibration part in step (1) is fixed on by ring flange and stainless steel bolt, inner sleeve is fixed on handle of a knife by ring flange and stainless steel bolt, installs wire simultaneously;
(3), taking handle of a knife as benchmark, on car-drilling composite machine bed, process ultrasonic transformer, make to process the pivot of rear ultrasonic transformer and the center superposition of knife bar;
(4), in inner sleeve outside, bearing and conducting ring are installed, by being welded to connect wire and conducting ring;
(5) mechanical water seal and overcoat, are successively installed, and then are screwed hexagonal setscrew nut;
(6), handle of a knife is fixed on machine tool chief axis, overcoat is fixed on to machine tool chief axis side by fixed head;
(7), carbon brush is connected with ultrasonic circuit and electric spark circuit, snap joint is connected with fluid circulation system;
(8), leakproof rubber ring is installed in the installing hole of knife bar part, by chuck, pressure cap, electrode is fixed to the knife bar part of ultrasonic transformer bottom.
The invention has the beneficial effects as follows: by making the dead in line of handle of a knife, ultrasonic transformer and knife bar, can make the axiality of whole tool heads high; By cavity III being set between overcoat and ultrasonic transformer and in the end of cavity III, mechanical water seal being set, in improving ultrasonic transformer rotary speed, can also reduce the impact on ultrasonic transmission; In addition, in universal ultrasonic assisting of the present invention, rushing liquid electric spark milling tool heads can be by universal fixturing clamping on electric spark machine tool main shaft or general CNC milling machine main shaft, realize the interior liquid spark discharge Milling Process under ultrasonic assisting, there is highly versatile, simple in structure, advantage with low cost.
Brief description of the drawings
Fig. 1 is external structure schematic diagram of the present invention.
Fig. 2 is sectional structure schematic diagram of the present invention.
Fig. 3 is mounting structure schematic diagram of the present invention.
Fig. 4 is the local enlarged diagram of installation of the present invention.
Fig. 5 is the structural representation of prior art.
In figure, 1, handle of a knife, 2, inner sleeve, 3, overcoat, 4, carbon brush, 5, snap joint, 6, mechanical water seal, 7, knife bar, 8, bearing, 9, ultrasonic transformer, 10, conducting ring, 11, leakproof rubber ring, 12, hexagonal setscrew nut, 13, wire, 14, fixed head, 15, electrode, 16, cavity III, 17, cavity II, 18, cavity I, 19, installing hole, 20, transducer, 21, after join piece, 22, discharge medium circulation passage.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
As shown in Figures 1 to 4, in universal ultrasonic the assisting of one of the present invention, rush liquid electric spark milling tool heads, comprise ultrasonic vibration part, also comprise handle of a knife 1 and knife bar 7, handle of a knife 1 is fixed with inner sleeve 2, inner sleeve 2 is fixed with ultrasonic transformer 9, ultrasonic transformer 9 bottoms are provided with knife bar 7, electrode 15 is installed on knife bar 7, handle of a knife 1, ultrasonic transformer 9, the dead in line of knife bar 7, inner sleeve 2 outsides are provided with overcoat 3, overcoat 3 extends to ultrasonic transformer 9 stage casings, between overcoat 3 and ultrasonic transformer 9, be formed with cavity III 16, the end of cavity III 16 is provided with mechanical water seal 6, ultrasonic transformer 9 inside are provided with discharge medium circulation passage 22.
By handle of a knife and inner sleeve being set at the front end of ultrasonic transformer, in the bottom of ultrasonic transformer, knife bar is set, and makes the dead in line of handle of a knife, ultrasonic transformer and knife bar, even the center superposition of the pivot of ultrasonic transformer and handle of a knife and knife bar, axiality is high; Cavity III is set between overcoat and ultrasonic transformer and in the end of cavity III, mechanical water seal is set, can reduce the frictional resistance to ultrasonic transformer, improve the rotary speed of ultrasonic transformer; Meanwhile, be provided with discharge medium circulation passage in ultrasonic transformer inside, can realize the logical liquid of electrode.
In embodiments of the invention, in order to facilitate the installation of electrode, be provided with installing hole 19 on knife bar 7, and be provided with leakproof rubber ring 11 in installing hole 19, electrode 15 is fixed in installing hole 19 by chuck and pressure cap, easy installation and reliable; In addition, ultrasonic transformer 9 stage casing inner horizontal directions are processed with through hole, and through hole middle part has to the blind hole of installing hole 19, and through hole and blind hole have formed the path of discharge medium turnover ultrasonic transformer 9.
Particularly, handle of a knife 1 is stainless steel manufacture, and dimensional standard adopts Mohs handle of a knife BT40 or BT50, and to obtain range of application the most widely, handle of a knife 1 is fastening by flange in the bottom structure employing M4 CARBURIZING FURNACE FOR STAINLESS FASTENER and inner sleeve 2.
Inner sleeve 2 adopts polycarbonate plastic (PC) to make, and has good mechanical performance and insulating properties; Two bearings 8 of the outside interference fit of inner sleeve 2, bearing 8 adopts Harbin bearing 6814ZZ, and design parameter is: iron envelope, internal diameter 70mm, external diameter 90mm, thickness 10mm; 3 conducting rings 10 are installed in inner sleeve 2 bottoms, and conducting ring 10 materials are brass, are connected respectively by wire 13 with inner piezoelectric ceramic transducer 20 positive poles, piezoelectric ceramic transducer 20 negative poles and ultrasonic transformer 9.
After 304 stainless steels of ultrasonic vibration part by top, join piece 21, six piezoelectric ceramic transducer 20,304 stainless steel ultrasonic transformers 9 form, in addition, the material of ultrasonic transformer 9 also can adopt titanium alloy, titanium alloy has better acoustic characteristic, ultrasonic vibration is had to higher conductivity, can promote stability, the raising amplitude of ultrasonic vibration part.Ultrasonic transformer 9 tops are ring flanges, are arranged on the bottom of inner sleeve 2 by M4 stainless steel bolt; After stainless steel, joining piece 21 is highly (n × 1/2+1/4) ultrasonic wave wavelength, particularly, in the present embodiment, select 1/4 ultrasonic wave wavelength, y43-Φ 40 × Φ 15 × 5 that piezoelectric ceramic transducer 20 adopts upper excusing from death to produce, resonant frequency 38.7KHz, in order to reach best resonance effect, ultrasonic transformer 9 length are got the integral multiple of half ultrasonic wave wavelength, in the present embodiment, rounding a wavelength, is 129.2mm.
Piezoelectric ceramic transducer 20 has six, and what reality was used is middle four, and these four piezoelectric ceramics are connected with two conducting rings 10 of outside respectively by wire 13, and another one conducting ring 10 is connected with ultrasonic transformer 9 by wire 13; Spark discharge electric current passes through conducting ring 10, wire 13, ultrasonic transformer 9, ER11 chuck iontophoresis electrode 15 successively, realizes spark discharge; Ultrasonic, electric spark is isolated by the present invention, and overcoat 3 is not charged.
Three groups of carbon brush 4 that ultrasonic electric current, electric spark electric current are installed by overcoat 3 sides are poured conducting ring 10 into, and carbon brush 4 inside are high conductivity graphite, and outside has insulation shell to prevent and shell 3 short circuits.
In the situation that spark discharge and ultrasonic vibration need more high-power, larger electric current, carbon brush 4 is distributed in to the four sides of overcoat 3, place three groups of carbon brush 4 for each, be equivalent to so each conducting ring 10 and be connected with four carbon brush 4, the electric current bearing can strengthen as original 4 times.
Machinery water seal 6 is ceramic graphite mechanical water envelope 301-40, these parts are by being fixed on ultrasonic transformer 9 with the graphite part of rubber inner sleeve, with the partial fixing of silicon carbide ceramics in outside, the effect of sealing liquid when utilizing the friction of carborundum and graphite to play ultrasonic transformer 9 to rotate, particularly, ultrasonic transformer 9 turn scooter 3000rpm; In the present embodiment, graphite part is arranged on respectively the 3/4 ultrasound waves strong point that ring flange place and ultrasonic transformer 9 are close in ultrasonic transformer 9 tops, and the reason arranging is like this that the amplitude at this two place is little, thereby little to the damage of mechanical water seal 6, little on the transmission impact of ultrasonic vibration; Ceramic segment is correspondingly located at respectively upper end and the bottom of cavity III 16, prevents from revealing discharge medium is enclosed in cavity III 16.
Overcoat 3 is 6061-T6 aluminium alloy machined moulding, outside has four screwed holes that overcoat 3 is fixed on machine tool chief axis, inside is vertical shoulder hole, cavity I 18 is formed at shoulder hole top and inner sleeve 2 tops, in cavity I 18, be provided with two bearings 8, shoulder hole middle part forms cavity II 17 with inner sleeve 2 bottoms and ultrasonic transformer 9 tops, shoulder hole bottom and ultrasonic transformer 9 stage casings form cavity III 16, the carborundum part of mechanical water seal 6 is installed in the top of cavity III 16 and bottom, coordinate with the graphite part of mechanical water seal 6 on ultrasonic transformer 9 respectively, there is G1/8 screwed hole cavity III 16 sides, in order to snap joint 5 to be installed.
The model of snap joint 5 is PC8-01, by connecting the flexible pipe of outside external diameter 8mm, flexible pipe is connected with water pump, water pump provides discharge medium liquid to cavity III 16, pressure fluid in cavity III 16 through the horizontal through hole of ultrasonic transformer 9 inside with the blind hole that arrives installing hole 19 to electrode 15 feed flows, general brass or the red copper hollow edged electrode of adopting of electrode 15, diameter is 1-7mm.
Ultrasonic transformer 9 bottoms are that install after the graphite part of mechanical water seal 6 at 3/4 wavelength place, for ensureing not slippage of graphite part, by the screw threads for fastening on hexagonal setscrew nut 12 and ultrasonic transformer 9; Ultrasonic transformer lower end is according to ER11 knife bar dimensioned and is processed with installing hole 19, certainly, can range of application in order to increase, knife bar also can be the one in ER16, ER20, ER25 or ER32, the inner leakproof rubber ring 11 of installing of installing hole 19, when installing electrodes 15, electrode 15 inserts in the middle hole of leakproof rubber ring 11, so that the liquid in cavity III 16 finally flows out by the hole in the middle of electrode 15, reaches interior object of rushing liquid.
The present invention is being applied in the electric spark machine tool or electric spark machine tool that CNC milling machine transformation forms, except handle of a knife 1 is fixed on main shaft, also can make fixed head 14 according to machine tool chief axis size, fixed head 14 1 sides are connected with the screwed hole of overcoat 3 sides, opposite side is fixed on machine tool chief axis, make overcoat 3 with major axis X, Y, the motion of Z direction, but do not rotate; Carbon brush 4 is extremely connected with one of the both positive and negative polarity of ultrasonic-frequency power supply, spark machined respectively, and another of workpiece to be machined and spark machined is extremely connected.In addition, those skilled in the art easily learns according to the present invention, the present invention can also be applied to ultrasonic auxiliary in liquid electrolysis Milling Process field, ultrasonic auxiliary in liquid melting and explosion Milling Process field, ultrasonic auxiliary in liquid Short arc machining field.
Particularly, in ultrasonic assisting of the present invention, rush making and the using method of liquid electric spark milling tool heads, comprise the steps:
Step 1, by piezoelectric ceramic piece by bolt with process after join piece, the ultrasonic transformer that only processes ring flange connects to form ultrasonic vibration part;
Step 2, ultrasonic vibration part is fixed in inner sleeve 2 by ring flange and M4 stainless steel bolt, inner sleeve 2 is fixed on handle of a knife 1 by ring flange and M4 stainless steel bolt, installs wire 13 simultaneously;
Step 3, taking handle of a knife 1 as benchmark, on car-drilling composite machine bed, process ultrasonic transformer, the center superposition of the pivot of ultrasonic transformer, ER11 knife bar like this, axiality is high;
Step 4, in inner sleeve 2 outsides, bearings 8, conducting ring 10 are installed, by being welded to connect wire 13 and conducting ring 10;
Step 5, successively mechanical water seal 6, overcoat 3 are installed, are finally screwed hexagonal setscrew nut 12, installation;
When step 6, use, handle of a knife 1 is fixed on machine tool chief axis, overcoat 3 is fixed on machine tool chief axis side by fixed head 14;
Step 7, connect carbon brush 4 with ultrasonic circuit and electric spark circuit, be connected snap joint 5 and fluid circulation system;
Step 8, in the interior installation leakproof of installing hole 19 rubber ring 11 of knife bar 7, ER11 knife bar part by ER11 chuck, pressure cap fixed electrode to ultrasonic transformer bottom, can implement to process.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is to be limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these embodiments, but these changes and amendment all fall into protection scope of the present invention.
Claims (10)
1. in universal ultrasonic assisting, rush liquid electric spark milling tool heads, comprise ultrasonic vibration part, it is characterized in that: also comprise handle of a knife and knife bar, described handle of a knife is fixed with inner sleeve, inner sleeve is fixed with ultrasonic transformer, ultrasonic transformer bottom is provided with knife bar, electrode is installed on knife bar, the dead in line of handle of a knife, ultrasonic transformer, knife bar, outside of inner cover is provided with overcoat, and overcoat extends to ultrasonic transformer stage casing, is formed with cavity III between overcoat and ultrasonic transformer, the end of cavity III is provided with mechanical water seal, and ultrasonic transformer inside is provided with discharge medium circulation passage.
2. in universal ultrasonic the assisting of one as claimed in claim 1, rush liquid electric spark milling tool heads, it is characterized in that: described knife bar is provided with installing hole, in installing hole, be provided with leakproof rubber ring, electrode is fixed in installing hole by chuck and pressure cap, in ultrasonic transformer, intersegmental part is provided with the through hole of horizontal direction, through hole middle part communicates with the blind hole that extends to installing hole, described through hole and blind hole composition discharge medium circulation passage.
3. in universal ultrasonic the assisting of one as claimed in claim 1, rush liquid electric spark milling tool heads, it is characterized in that: described mechanical water seal is ceramic graphite mechanical water envelope, pottery graphite mechanical water package is drawn together the graphite part that is provided with rubber inner sleeve and the ceramic segment that is provided with carborundum, graphite part is located at respectively ultrasonic transformer top and ultrasonic transformer 3/4 ultrasonic wave wavelength position, and ceramic segment is located at respectively upper end and the bottom of cavity III.
4. one as described in as arbitrary in claims 1 to 3 is universal ultrasonicly rushes liquid electric spark milling tool heads in auxiliary, it is characterized in that: after described ultrasonic vibration part comprises, join piece, transducer and ultrasonic transformer, after join piece and transducer is located in the cavity of inner sleeve inside, after join piece, transducer and ultrasonic transformer and be connected by bolt, lining the outer surface of is provided with conducting ring, conducting ring is connected with ultrasonic transformer with transducer by wire, puts outward and is provided with carbon brush, and carbon brush is connected with conducting ring.
5. in universal ultrasonic the assisting of one as claimed in claim 4, rush liquid electric spark milling tool heads, it is characterized in that: the length of joining piece after described is 1/4 of ultrasonic wave wavelength, the length of ultrasonic transformer is the integral multiple of ultrasonic wave half-wavelength.
6. in universal ultrasonic the assisting of one as claimed in claim 4, rush liquid electric spark milling tool heads, it is characterized in that: four diverse location places, described overcoat outside are respectively equipped with carbon brush, the quantity that each position arranges carbon brush is three groups, carbon brush is connected with ultrasonic circuit and electric spark circuit, carbon brush inside is provided with high conductivity graphite, and carbon brush outside is provided with insulation shell.
7. in universal ultrasonic the assisting of one as claimed in claim 4, rush liquid electric spark milling tool heads, it is characterized in that: described transducer is piezoelectric ceramic transducer, piezoelectric ceramics has six, and wherein four are connected with conducting ring by wire.
8. in universal ultrasonic the assisting of one as claimed in claim 1, rush liquid electric spark milling tool heads, it is characterized in that: described inner sleeve is made up of polycarbonate plastic, overcoat is made up of aluminium alloy, overcoat inside is provided with vertical shoulder hole, cavity I is formed at shoulder hole top and inner sleeve top, in cavity I, be provided with bearing, shoulder hole middle part forms cavity II with inner sleeve bottom and ultrasonic transformer top, shoulder hole bottom and ultrasonic transformer stage casing form cavity III, overcoat outside is provided with snap joint, snap joint is connected with flexible pipe, and discharge medium enters cavity III by flexible pipe.
9. in universal ultrasonic the assisting of one as claimed in claim 1, rush liquid electric spark milling tool heads, it is characterized in that: described overcoat outside is provided with connecting hole, and connecting hole is provided with fixed head, and fixed head is located on machine tool chief axis.
10. make a method of rushing liquid electric spark milling tool heads in universal ultrasonic assisting as claimed in claim 1, comprise the following steps:
(1) ultrasonic transformer of, joining piece by bolt by piezoelectric ceramic piece, after manufactured and only processing ring flange connects to form ultrasonic vibration part;
(2), put in the ultrasonic vibration part in step (1) is fixed on by ring flange and stainless steel bolt, inner sleeve is fixed on handle of a knife by ring flange and stainless steel bolt, installs wire simultaneously;
(3), taking handle of a knife as benchmark, on car-drilling composite machine bed, process ultrasonic transformer, make to process the pivot of rear ultrasonic transformer and the center superposition of knife bar;
(4), in inner sleeve outside, bearing and conducting ring are installed, by being welded to connect wire and conducting ring;
(5) mechanical water seal and overcoat, are successively installed, and then are screwed hexagonal setscrew nut;
(6), handle of a knife is fixed on machine tool chief axis, overcoat is fixed on to machine tool chief axis side by fixed head;
(7), carbon brush is connected with ultrasonic circuit and electric spark circuit, snap joint is connected with fluid circulation system;
(8), leakproof rubber ring is installed in the installing hole of knife bar part, by chuck, pressure cap, electrode is fixed to the knife bar part of ultrasonic transformer bottom.
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| CN201410185752.XA CN103920953B (en) | 2014-05-05 | 2014-05-05 | Liquid electric spark milling tool heads and preparation method thereof is rushed in a kind of universal ultrasonic wave added |
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