CN103395008A - Abrasive jet machining method under effect of composite energy field - Google Patents

Abstract

An abrasive jet machining method under the effect of a composite energy field belongs to the technical field of machining on difficult-to-machine materials, and is aimed at solving the problems of low machining efficiency, severe cutter wearing and high machining cost in conventional machining methods for metal based difficult-to-machine materials. The method comprises the following steps: 1) preparing an electrolyte; 2) preparing an abrasive-electrolyte mixed solution, and stirring; 3) adjusting the distance between a post-mixed jet apparatus and a to-be machined workpiece; 4) starting a compressed-air generating system, turning on an air pressure switch; 5) starting a gas-liquid booster pump; 6) starting a precision flow control pump to mix the abrasive-electrolyte mixed solution and a work liquor to form an abrasive-electrolyte mixed machining liquor; 7) starting a power supply to make the post-mixed jet apparatus jet the abrasive-electrolyte mixed machining liquor to machine the to-be machined workpiece; 8) after machining, turning off the power supply, the precision flow control pump, the gas-liquid booster pump and the compressed-air generating system; and 9) taking out the to-be machined workpiece.

Description

Abrasive jet machining method under the action of compound energy field

technical field

The invention relates to an abrasive jet processing method under the action of a composite energy field, and belongs to the technical field of processing difficult-to-machine materials.

Background technique

With the rapid development of modern science and technology, especially the rapid advancement of cutting-edge science and technology such as aerospace, national defense and military industry, in order to improve the performance and reliability of products, various new materials are emerging, such as titanium alloys and various metal-based and non-metallic materials. Composite materials are increasingly used in the aerospace field. Since these materials are difficult to process, the accompanying processing technical problems have always been highly concerned and valued by various countries. In order to solve the processing technology problems of difficult-to-machine materials, on the one hand, researchers from various countries are committed to improving traditional cutting processing technologies, such as using high-speed cutting methods to cut titanium alloy parts, etc., but the cutting performance of difficult-to-machine materials Very poor, not only the performance requirements of processing equipment are very strict, but also the problem of tool wear has always been a bottleneck problem restricting the field of cutting and processing of difficult-to-machine materials; in addition, the technical characteristics of cutting processing determine that it will inevitably produce surface/sub-surface Damage, the existence of these surface/subsurface damage layers will seriously affect the performance of parts and reduce their service life. On the other hand, special processing technologies such as EDM and electrochemical machining play an important role in the field of processing technology for difficult-to-machine materials. This is because electrical discharge machining relies on the high temperature and high pressure generated instantaneously by the workpiece and the electrode to remove materials, and can realize the processing of all metal materials and some non-metal materials through special processing techniques. However, the processing efficiency of EDM is low, and the surface quality is not high. A solid recast layer will be formed on the machined surface. The existence of the recast layer will seriously affect the performance of the workpiece. At the same time, there are electrodes in EDM technology. The existence of the above shortcomings limits the application range of EDM technology. Electrochemical machining has the advantages of high machining efficiency and good surface quality, but it is difficult to control the machining accuracy, and there are also problems such as difficulty in designing special electrodes for electrochemical machining.

In order to solve the difficulties in the design of special electrodes for electrochemical machining, Wataru Natsu et al., Tokyo University of Agriculture and Technology, Japan proposed a new method for material removal machining using electrochemical jet machining. In this method, the electrolyte is sprayed onto the surface of the workpiece through a special spraying device, and a certain voltage is added between the workpiece and the special spraying device (the workpiece is connected to the positive pole, and the special spraying device is connected to the negative pole) to realize the electrochemical removal of the workpiece material. Through the research, it is found that the material removal process only occurs in the area near the center of the special injection device, because the electric field established by the electrolyte of the special injection device is the largest in the center area of the injection device, and the electric field weakens rapidly after the deviation from the center position. Using this technology can effectively Control the machining accuracy of electrochemical spraying machining, and the precision machining of curved surface parts with complex shapes can also be realized through trajectory control. Electrochemical deposition, coating and coloring processes can also be realized by changing the polarity of the power supply. Therefore, the application range of this process is very wide. However, in order to improve the machining accuracy, passivation electrolyte is generally used when processing with a single energy form electrolyte spraying method. When using this type of electrolyte for processing, the passivation film produced during the processing will seriously affect the processing efficiency of this method.

In order to improve the processing efficiency of electrochemical jet machining, P.T.Pajak et al. of Glasgow Scotland University proposed a new method of material removal processing using laser-assisted electrochemistry in the form of composite energy. In this method, a coaxial laser with a certain energy is added to the center of the injection device of electrochemical jet machining, and the kinetic energy of the electrochemical reaction is enhanced by the auxiliary heating effect of the laser on the workpiece, and at the same time, the passive film produced by electrochemical jet machining is assisted to decompose. In this way, the efficiency of electrochemical jet machining can be improved. Due to the use of composite energy for processing, this technology is more significant in improving material removal efficiency and processing accuracy. However, since this method needs to ensure that the center of the laser beam and the electrolyte jet beam are coaxial, otherwise the material removal effect will be seriously affected and the processing efficiency will be reduced. However, it is technically difficult to achieve strict coaxiality between the laser beam and the electrolyte jet beam center, and The coaxiality between the laser and the center of the electrolyte jet beam is also affected by the processing environment conditions (such as the dynamic behavior of the jet beam, the bubbles generated during the processing of the negative electrode, and the impurity content in the electrolyte, etc.). It is easy to disperse and difficult to focus on the desired area, thus affecting the actual processing effect of this kind of processing technology. At the same time, this method also has the problems of complex processing equipment and high equipment maintenance costs.

Abrasive jet processing technology is to use the high-speed spray of fine abrasives to mechanically erode the surface of the workpiece to remove the workpiece material. Since abrasive jet processing has the characteristics of simple equipment, flexible use, and the ability to process and remove various materials, it has been widely used in the cutting and processing of various materials since it was produced in the 1980s. However, the study found that when using abrasive jet processing technology to polish SKD61 mold steel, the hardness, shape and particle size of the fine abrasives in the abrasive jet processing process directly affect the processing efficiency and surface quality. When #2000SiC abrasives are used for processing When using #8000SiC abrasive, the processing efficiency is high, and the surface roughness value can reach Ra0.28μm. When #8000SiC abrasive is used for processing, the surface roughness value can reach Ra0.13μm, but the processing efficiency is reduced by 50%. From the above analysis, it can be seen that when a single energy form of abrasive jet is used for processing, the processing efficiency and surface quality are mutually restricted.

Contents of the invention

The purpose of the present invention is to solve the problems of low processing efficiency, serious tool wear and high processing cost in the existing processing methods for metal-based difficult-to-machine materials, and provides an abrasive jet processing method under the action of a composite energy field.

The abrasive jet processing method under the action of a composite energy field according to the present invention, the abrasive jet processing device under the action of a composite energy field involved in the method includes a horizontal workbench base, a horizontal workbench transmission mechanism, a horizontal moving workbench, a horizontal rotating workbench, Processing room, vertical table base, vertical moving table, vertical rotary table, L-shaped bracket, post-mixing injection device, fixture, precision flow control pump, abrasive mixed liquid stirring device, processing liquid recovery box, power supply, jet processing Pressure gauge, working fluid pressure regulating valve, pump pressure outlet pressure gauge, stainless steel accumulator, air pressure gauge, pressure relief valve, pressure outlet check valve, working fluid tank, liquid inlet check valve, gas-liquid booster pump, air pressure Regulating valves, gas pressure switches, compressed air generation systems and air drying and filtering devices;

The base of the horizontal workbench and the base of the vertical workbench are arranged vertically to each other;

The transmission mechanism of the horizontal worktable is fixed on the base of the horizontal worktable, and the horizontal movable worktable, the processing room and the horizontal rotary worktable are installed on the output end of the horizontal worktable transmission mechanism from bottom to top;

The processing chamber is a semi-closed container with an upward opening, and the waste liquid outlet of the processing chamber is connected to the inlet of the processing liquid recovery tank through a pipeline;

The vertical moving table is fixed on the working surface of the vertical table base, the vertical rotating table is installed on the output end of the vertical moving table, the vertical branch of the L-shaped bracket is fixed on the vertical rotating table, and the L-shaped bracket The horizontal branch of the rear mixing injection device is fixed by the clamp; the injection port of the rear mixing injection device is facing downward;

The mixing chamber of the post-mixing injection device is connected with the outlet of the abrasive mixed liquid stirring device through a flow control pump;

The working fluid inlet of the post-mixing injection device is connected with the working fluid outlet of the working fluid pressure regulating valve;

The post-mixing injection device is connected to the negative pole of the power supply, and the positive pole of the power supply is connected to the processed workpiece placed on the horizontal rotary table;

One end of the air drying and filtering device is connected to the compressed air generating system, the other end of the air drying and filtering device is connected to one end of the gas pressure switch, the other end of the gas pressure switch is connected to one end of the air pressure regulating valve, and the other end of the air pressure regulating valve After passing through the barometer, it is connected to the air pressure input port of the gas-liquid booster pump. The working fluid input port of the gas-liquid booster pump is connected to the working fluid outlet of the working fluid tank through the liquid inlet check valve. The pressure outlet end is connected to the inlet of the stainless steel accumulator through the pressure outlet check valve, and the pressure outlet end of the gas-liquid booster pump is connected to one end of the pressure relief valve through a tee, and the other end of the pressure relief valve is connected to the pressure relief of the working fluid tank. The outlet of the stainless steel accumulator is connected to one end of the working fluid pressure regulating valve through the pump pressure outlet pressure gauge, and the other end of the working fluid pressure regulating valve is connected to the working fluid inlet of the post-mixing injection device through the jet processing pressure gauge;

The abrasive jet processing method under the action of the composite energy field comprises the following steps:

Step 1. Prepare the electrolyte and inject it into the working fluid tank;

Step 2, using the abrasive and the electrolyte to prepare the abrasive electrolyte mixed solution, wherein the concentration of the electrolyte is consistent with the concentration of the electrolyte injected into the working fluid tank, and the concentration of the abrasive electrolyte mixed solution is controlled between 50g/L-300g/L, And inject the abrasive mixture into the stirring device to stir, so that the abrasive and the electrolyte are kept evenly mixed;

Step 3. Adjust the distance between the front end of the nozzle of the mixed injection device and the upper surface of the workpiece to be controlled within 0.2mm-5mm;

Step 4: Start the compressed air generating system, turn on the gas pressure switch, and adjust the air pressure regulating valve so that the air pressure of the air pressure regulating valve is controlled within the range of 0.2Mpa-0.8Mpa;

Step 5. Start the gas-liquid booster pump and adjust the working fluid pressure regulating valve to control the output pressure of the working fluid within the range of 0.5Mpa-10Mpa;

Step 6. Start the precision flow control pump, so that the abrasive electrolyte mixed liquid enters the mixing chamber of the post-mixing injection device, and evenly mixes with the working fluid output by the working fluid pressure regulating valve, as the abrasive electrolyte mixed processing fluid, and adjusts the precision flow control pump Speed, so that the abrasive mass concentration of the abrasive electrolyte mixed processing fluid in the mixing chamber of the post-mixing injection device is stably controlled within the range of 5g/L-45g/L during composite processing, and the precise flow control pump speed is controlled at 50 rpm-600 between rev/min ranges;

Step 7. Start the power supply, adjust the processing track according to the computer, control the mixed injection device to spray the abrasive electrolyte mixed processing fluid, and process the workpiece to be processed;

Step 8. After the processing is completed, turn off the power, turn off the precision flow control pump, turn off the gas-liquid booster pump, and turn off the compressed air generation system;

Step 9, take out the workpiece to be processed.

Advantages of the present invention:

1. Organically combine abrasive jet machining with electrochemical jet machining. During the machining process, various energies (mechanical, electrical, chemical) are simultaneously applied to the surface of the workpiece. The interactions of various energies promote each other, which can give full play to the electrochemical machining surface. The advantages of high quality and convenient and flexible abrasive jet processing greatly improve processing efficiency while obtaining high-quality processed surfaces. On the one hand, the high-speed sprayed fine abrasive acts on the surface of the workpiece, which can effectively remove the oxide film existing on the original surface of the workpiece and the passivation film produced during electrochemical machining, and improve the chemical reactivity during electrochemical machining, thereby improving the electrochemical jet flow. The current efficiency during processing improves the processing efficiency. At the same time, under the continuous erosion of the metal surface grains by the high-speed injection of fine abrasives, a large number of dislocations may be formed inside the grains, and even destroy the internal structure of the surface grains of the metal material. These surface grains whose internal structure is destroyed The metal atoms are more likely to be electrolyzed and chemically etched, which also helps to improve the removal rate of workpiece materials; on the other hand, the erosion of the anode during electrochemical jet machining can effectively reduce the bond energy of the anode metal surface atoms, The reduction of the bond energy of the surface atoms is beneficial to the mechanical removal of the surface material of the workpiece by the fine abrasive, and further realizes the efficient removal of the workpiece material.

2. The high-speed injection of electrolyte abrasive mixed with machining fluid keeps the electrolyte acting on the machining area in a state of renewal at all times. The high-speed flow and renewal of machining fluid can not only continuously take away the heat generated during the machining process, but also weaken the potential of traditional electrochemical machining. The existence of concentration polarization and passivation polarization can improve the filling capacity of the electrolyte, improve the stability of the processing process, and then improve the quality of the processed surface.

3. The use of post-mixing abrasive jet processing can avoid the wear of the pre-mixing abrasive mixture on the pressure-generating parts of the device and its pipelines. The flow controller can realize the precise control of the mixed flow of high-concentration abrasive mixed processing fluid, so that The abrasive concentration can be kept uniform and stable during post-mixed abrasive jet machining, which helps to further improve the quality of the machined surface.

Description of drawings

Fig. 1 is a schematic structural view of the device involved in the abrasive jet processing method under the action of the composite energy field of the present invention;

Fig. 2 is a flow chart of the abrasive jet processing method under the action of the composite energy field of the present invention.

Detailed ways

Specific Embodiment 1: The present embodiment will be described below with reference to FIG. 1 and FIG. 2. The abrasive jet processing method under the action of the composite energy field described in this embodiment, the abrasive jet processing device under the action of the composite energy field involved in the method includes a horizontal workbench base Seat 1, horizontal table transmission mechanism 2, horizontal mobile table 3, horizontal rotary table 4, processing room 6, vertical table base 7, vertical mobile table 8, vertical rotary table 9, L-shaped bracket 10, Post-mixing injection device 11, fixture 12, precision flow control pump 27, abrasive mixed liquid stirring device 28, processing fluid recovery tank 29, power supply 30, jet processing pressure gauge 13, working fluid pressure regulating valve 14, pump pressure outlet pressure gauge 15 , stainless steel accumulator 16, air pressure gauge 17, pressure relief valve 18, pressure outlet check valve 19, working fluid tank 20, liquid inlet check valve 21, gas-liquid booster pump 22, air pressure regulating valve 23, gas pressure switch 24. Compressed air generation system 25 and air drying and filtering device 26;

The horizontal workbench base 1 and the vertical workbench base 7 are arranged vertically to each other;

The horizontal worktable transmission mechanism 2 is fixed on the horizontal worktable base 1, and the horizontal mobile worktable 3, the processing chamber 6 and the horizontal rotary worktable 4 are installed on the output end of the horizontal worktable transmission mechanism 2 from bottom to top;

The processing chamber 6 is a semi-closed container with an upward opening, and the waste liquid outlet of the processing chamber 6 is connected to the inlet of the processing liquid recovery tank 29 through a pipeline;

The vertically movable workbench 8 is fixed on the working surface of the vertical workbench base 7, the vertically rotated workbench 9 is installed on the output end of the vertically moveable workbench 8, and the vertical branch of the L-shaped bracket 10 is fixed on the vertically rotated workbench 9, the horizontal branch of the L-shaped bracket 10 fixes the rear mixing injection device 11 through the clamp 12; the injection port of the rear mixing injection device 11 faces downward;

The mixing chamber of the post-mixing injection device 11 is connected to the outlet of the abrasive mixed liquid stirring device 28 through a flow control pump 27;

The working fluid inlet of the post-mixing injection device 11 is connected with the working fluid outlet of the working fluid pressure regulating valve 14;

The post-mixing injection device 11 is connected to the negative pole of the power supply 30, and the positive pole of the power supply 30 is connected to the processed workpiece 5 placed on the horizontal rotary table 4;

One end of the air drying and filtering device 26 is connected to the compressed air generating system 25, the other end of the air drying and filtering device 26 is connected to one end of the gas pressure switch 24, and the other end of the gas pressure switch 24 is connected to one end of the air pressure regulating valve 23, The other end of the air pressure regulating valve 23 is connected to the air pressure input port of the gas-liquid booster pump 22 after passing through the air pressure gauge 17, and the working fluid input port of the gas-liquid booster pump 22 is connected to the working fluid tank 20 through the liquid inlet check valve 21. The pressure outlet of the gas-liquid booster pump 22 is connected to the inlet of the stainless steel accumulator 16 through the pressure outlet check valve 19, and the pressure outlet of the gas-liquid booster pump 22 is connected to the pressure relief valve 18 through a tee The other end of the pressure relief valve 18 is connected to the pressure relief port of the working fluid tank 20. The outlet of the stainless steel accumulator 16 is connected to one end of the working fluid pressure regulating valve 14 through the pump pressure outlet pressure gauge 15. The working fluid pressure The other end of the regulating valve 14 is connected to the working fluid inlet of the post-mixing injection device 11 through the jet processing pressure gauge 13;

The abrasive jet processing method under the action of the composite energy field comprises the following steps:

Step 1, preparing the electrolyte and injecting it into the working fluid tank 20;

Step 2, using abrasives and electrolyte to prepare abrasive electrolyte mixed solution, wherein the electrolyte concentration is consistent with the electrolyte concentration injected into the working fluid tank 20, and the concentration of the abrasive electrolyte mixed solution is controlled between 50g/L-300g/L , and pour into the abrasive mixed liquid stirring device 28 to stir, so that the abrasive and the electrolyte are kept evenly mixed;

Step 3. Adjust the distance between the front end of the nozzle of the mixed injection device 11 and the upper surface of the workpiece 5 to be controlled within 0.2mm-5mm;

Step 4, start the compressed air generating system 25, open the gas pressure switch 24, adjust the air pressure regulating valve 23, so that the air pressure of the air pressure regulating valve 23 is controlled within the range of 0.2Mpa-0.8Mpa;

Step 5, start the gas-liquid booster pump 22, adjust the working fluid pressure regulating valve 14, so that the output pressure of the working fluid is controlled within the range of 0.5Mpa-10Mpa;

Step 6. Start the precision flow control pump 27, so that the abrasive electrolyte mixed liquid enters the mixing chamber of the post-mixing injection device 11, and realizes uniform mixing with the working fluid output by the working fluid pressure regulating valve 14, and serves as the abrasive electrolyte mixed processing fluid to adjust the precision The speed of the flow control pump 27 is used to control the mass concentration of the abrasive electrolyte mixed machining fluid in the mixing chamber of the post-mixing injection device 11 during composite processing within the range of 5g/L-45g/L. The speed of the precision flow control pump 27 is controlled at Between 50 rpm and 600 rpm;

Step 7, start the power supply 30, control the post-mixing injection device 11 to spray the abrasive electrolyte mixed processing fluid according to the computer-controlled processing trajectory, and process the workpiece 5 to be processed;

Step 8. After the processing is completed, turn off the power supply 30, turn off the precision flow control pump 27, turn off the gas-liquid booster pump 22, and turn off the compressed air generation system 25;

Step 9, take out the workpiece 5 to be processed.

The post-mixing injection device 11 realizes the vertical movement through the vertical worktable transmission mechanism 8, and realizes the rotation along the vertical working plane through the vertical rotary worktable 9. The five-axis linkage mechanism is composed of the horizontal table transmission mechanism 2, the horizontal moving table 3 and the rotating table 4, the vertical moving table 8, and the vertical rotating table 9, which can realize efficient and precise machining and polishing of space-complex structural parts.

Abrasives and electrolyte are mixed in the abrasive mixed liquid stirring device 28, and stirred to form a high-concentration mixed liquid.

Specific embodiment two: this embodiment will further explain embodiment one, the precise flow control pump 27 adopts a peristaltic pump, the speed adjustment range of the peristaltic pump is 0-600 rpm, and the flow adjustment range of the peristaltic pump is 0 -2500ml/min.

With such a setting, the precise control of the input flow rate of the peristaltic pump can be conveniently realized by controlling the speed of the peristaltic pump, and the peristaltic pump isolates the abrasive mixed liquid from the pump body through the pipeline during the feeding process, avoiding the impact of the external environment on the abrasive mixed liquid. pollution.

Specific embodiment three: this embodiment further explains embodiment one, the electrolyte in step one is a passive electrolyte, and its main component is the mixed solution of sodium nitrate and water, and the mass percentage concentration of sodium nitrate and water is 5% -50%.

Such setting can reduce the influence of electrochemical stray corrosion on the machining process and improve the precision of composite machining.

Embodiment 4: In this embodiment, Embodiment 1 is further described. In step 2, the abrasive in the abrasive electrolyte mixture is inorganic fine particles, and the particle size of the inorganic fine particles is 0.5 μm˜100 μm.

Due to the small particle size and large specific surface energy of fine abrasives, they are prone to agglomeration after encountering liquids, which is not conducive to the inhalation of post-mixed abrasives. The fluidity of the abrasive can be greatly improved by preparing a certain concentration of the abrasive electrolyte mixed liquid and fully stirring the abrasive mixed liquid stirring device 28 to form a suspension, so as to realize the continuous and stable feeding process of the post-mixing abrasive jet.

Embodiment 5: This embodiment will further explain Embodiment 1. The abrasive in the abrasive electrolyte mixed solution in step 2 is inorganic fine particles, and the inorganic fine particles are alumina particles, silicon carbide particles, silicon dioxide particles, oxide particles, etc. Cerium particles, boron nitride particles or diamond particles.

Embodiment 6: In this embodiment, Embodiment 1 is further described. In Step 3, the distance between the front end of the nozzle of the post-mixing injection device 11 and the upper surface of the workpiece 5 is 0.5mm-4mm.

Embodiment 7: In this embodiment, Embodiment 1 is further described, and the output pressure of the working fluid in step 5 is 0.5Mpa-10Mpa.

Embodiment 8: In this embodiment, Embodiment 1 will be further explained. During composite processing in step 6, the electrolyte mass percentage concentration of the abrasive electrolyte mixed processing fluid in the mixing chamber of the post-mixing injection device 11 is stably controlled at 10%-30%. between.

Embodiment 9: This embodiment will further explain Embodiment 1. During composite processing in step 6, the abrasive mass concentration of the abrasive electrolyte mixed processing fluid in the mixing chamber of the post-mixing injection device 11 is stably controlled at 10g/L-35g/ Between L.

Embodiment 10: In this embodiment, Embodiment 1 is further explained. The power supply 30 is a DC power supply, and the power supply 30 outputs a continuously adjustable voltage of 0V-500V.

Embodiment 11: This embodiment further explains Embodiment 1. The power supply 30 is a DC pulse power supply. The power supply 30 outputs a continuously adjustable voltage of 0V-500V, and the voltage frequency is adjustable between 1KHz-1MHz.

Claims (10)

1. abradant jet processing method under the recombination energy field action, is characterized in that, under the recombination energy field action that the method relates to, the abradant jet processing unit (plant) comprises horizontal operation sewing platform base (1), horizontal table transmission mechanism (2), move horizontally workbench (3), horizontally rotate workbench (4), Processing Room (6), vertical operation sewing platform base (7), vertical travelling table (8), vertical rotary workbench (9), L bracket (10), rear mixed injection device (11), fixture (12), accurate flow control pump (27), abrasive material mixing alloy melt stirring device (28), working fluid collection box (29), power supply (30), jet tonnage table (13), working hydraulic pressure force regulating valve (14), pump pressure delivery gauge (15), stainless steel accumulator (16), air gauge (17), relief valve (18), pressure export check valve (19), working liquid container (20), feed liquor check valve (21), gas-liquid booster pump (22), air pressure regulator (23), gas pressure switch (24), compressed-air generating system (25) and air drying and filter (26),

Horizontal operation sewing platform base (1) and vertical operation sewing platform base (7) vertical setting mutually;

It is upper that horizontal table transmission mechanism (2) is fixed on horizontal operation sewing platform base (1), moves horizontally workbench (3), Processing Room (6) and horizontally rotate workbench (4) to be arranged on from the bottom to top on the output of horizontal table transmission mechanism (2);

Processing Room (6) is the semienclosed container of upward opening, and the waste liquid outlet of Processing Room (6) is connected with the entrance of working fluid collection box (29) by pipeline;

Vertical travelling table (8) is fixed on the working face of vertical operation sewing platform base (7), vertical rotary workbench (9) is arranged on the output of vertical travelling table (8), it is upper that the vertical branch of L bracket (10) is packed in vertical rotary workbench (9), mixed injection device (11) after the horizontal branch of L bracket (10) is fixing by fixture (12); The jet of rear mixed injection device (11) down;

The hybrid chamber of rear mixed injection device (11) is connected with the outlet of abrasive material mixing alloy melt stirring device (28) by flow control pump 27;

The working solution entrance of rear mixed injection device (11) is connected with the working solution outlet of working hydraulic pressure force regulating valve (14);

Rear mixed injection device (11) connects the negative pole of power supply (30), and the positive pole connection of power supply (30) is placed on the workpiece to be machined (5) that horizontally rotates on workbench (4);

air is dry to be connected with compressed-air generating system (25) with an end of filter (26), air is dry to be connected with an end of gas pressure switch (24) with the other end of filter (26), the other end of gas pressure switch (24) is connected with an end of air pressure regulator (23), the other end of air pressure regulator (23) is connected with the air pressure input port of gas-liquid booster pump (22) by after air gauge (17), the working solution input of gas-liquid booster pump (22) is connected with the working solution outlet of working liquid container (20) by feed liquor check valve (21), the pressure export end of gas-liquid booster pump (22) is connected with the entrance of stainless steel accumulator (16) by pressure export check valve (19), the pressure export end of gas-liquid booster pump (22) is connected with an end of relief valve (18) by threeway simultaneously, the other end of relief valve (18) is connected with the pressure relief opening of working liquid container (20), the outlet of stainless steel accumulator (16) is connected with an end of working hydraulic pressure force regulating valve (14) through pump pressure delivery gauge (15), the other end of working hydraulic pressure force regulating valve (14) through jet tonnage table (13) with after mixed injection device (11) working solution entrance be connected,

Under described recombination energy field action, the abradant jet processing method comprises the following steps:

Step 1, preparation electrolyte, and inject working liquid container (20);

Step 2, use abrasive material and electrolyte quota abrasive material electrolyte mixed liquor, wherein concentration of electrolyte is consistent with the concentration of electrolyte that injects working liquid container (20), the concentration of described abrasive material electrolyte mixed liquor is controlled between 50g/L-300g/L, and inject abrasive material mixing alloy melt stirring device (28) and stir, make abrasive material and electrolyte keep evenly mixing;

Step 3, the leading section of adjusting rear mixed injection device (11) nozzle and the distance between workpiece to be machined (5) upper surface, be controlled between 0.2mm-5mm it;

Step 4, startup compressed-air generating system (25), open gas pressure switch (24), and adjustable pressure control valve (23), be controlled in the 0.2Mpa-0.8Mpa scope air pressure of air pressure regulator (23);

Step 5, startup gas-liquid booster pump (22), regulate working hydraulic pressure force regulating valve (14), and the working solution output pressure is controlled in the 0.5Mpa-10Mpa scope;

step 6, start accurate flow control pump (27), make abrasive material electrolyte mixed liquor enter the hybrid chamber of rear mixed injection device (11), and realize evenly mixing with the working solution of working hydraulic pressure force regulating valve (14) output, as abrasive material electrolyte hybrid process liquid, adjustment precision flow control pump (27) rotating speed, the abrasive material mass concentration of the abrasive material electrolyte hybrid process liquid in the hybrid chamber of mixed injection device after while making Compound Machining (11) is stable to be controlled in the 5g/L-45g/L scope, accurate flow control pump (27) rotating speed is controlled between 50 rev/mins of-600 rev/mins of scopes,

Step 7, startup power supply (30), according to the computer regulating machining locus, mixed injection device (11) abrasive blasting electrolyte hybrid process liquid after controlling, process workpiece to be machined (5);

Step 8, machine after, powered-down (30), close accurate flow control pump (27), closes gas-liquid booster pump (22), the closes compression air produces system (25);

Step 9, taking-up workpiece to be machined (5).

2. abradant jet processing method under the recombination energy field action according to claim 1, it is characterized in that, accurate flow control pump (27) adopts peristaltic pump, and the rotational speed regulation scope of described peristaltic pump is 0-600 rev/min, and the flow adjustment range of described peristaltic pump is 0-2500ml/ minute.

3. abradant jet processing method under the recombination energy field action according to claim 1, is characterized in that, the electrolyte in step 1 is passivity electrolyte, and its main component is the mixed liquor of sodium nitrate and water, and the mass percent concentration of sodium nitrate and water is 5%-50%.

4. abradant jet processing method under the recombination energy field action according to claim 1; it is characterized in that; abrasive material in step 2 in abrasive material electrolyte mixed liquor is inorganic subparticle; described inorganic subparticle is alumina particle, silicon-carbide particle, silica dioxide granule, cerium oxide particle, boron nitride particle or diamond particles, and the particle size of described inorganic subparticle is 0.5 μ m～100 μ m.

5. abradant jet processing method under the recombination energy field action according to claim 1, is characterized in that, in step 3 after between leading section and workpiece to be machined (5) upper surface of mixed injection device (11) nozzle apart from being 0.5mm-4mm.

6. abradant jet processing method under the recombination energy field action according to claim 1, is characterized in that, the working solution output pressure in step 5 is 0.5Mpa-10Mpa.

7. abradant jet processing method under the recombination energy field action according to claim 1, it is characterized in that, during Compound Machining in step 6 after stable being controlled between 10%-30% of electrolyte mass percent concentration of abrasive material electrolyte hybrid process liquid in the hybrid chamber of mixed injection device (11).

8. abradant jet processing method under the recombination energy field action according to claim 1, it is characterized in that, during Compound Machining in step 6 after stable being controlled between 10g/L-35g/L of abrasive material mass concentration of abrasive material electrolyte hybrid process liquid in the hybrid chamber of mixed injection device (11).

9. abradant jet processing method under the recombination energy field action according to claim 1, is characterized in that, power supply (30) is dc source, the continuous adjustable voltage of power supply (30) output 0V-500V.

10. abradant jet processing method under the recombination energy field action according to claim 1, is characterized in that, power supply (30) is direct current pulse power source, the continuous adjustable voltage of power supply (30) output 0V-500V, and electric voltage frequency is adjustable at 1KHz-1MHz.

Images