CN102259214A - Efficient machining method of controllable ablation metallic material based on electric-spark induction - Google Patents
Efficient machining method of controllable ablation metallic material based on electric-spark induction Download PDFInfo
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Abstract
Efficient machining method of controllable ablation unmanageable metallic material based on electric-spark induction is characterized by comprising the following steps of: rotating a conductive roulette at a high speed, producing spark discharge between conductive teeth of the conductive wheel disc and the unmanageable metallic material under the action of a direct-current power supply or pulse power supply, meanwhile continuously or periodically introducing combustion-supporting gas which can produce combustion heat release effect through reacting with the unmanageable metallic material into a processing area so that the processing area of the unmanageable metallic material is in states of discharging induced by electric spark, ablating and softening and machining. Based on the discharging function of the electric spark, the surface of metallic material has a temperature higher than ignition temperature and in state of activation, has an ablation reaction with combustion-supporting gas to generate an ablation product and release a large quantity of heat; the heat acts on the material base in the processed area so that the unmanageable metallic material is heated, softened and even in a molten state; the ablation product and softened or even molten metallic material is removed through abrasive particles on the wheel disc or mechanical cutting function of the cutting tooth. The method has advantages of high processing efficiency, low power consumption, environmental friendliness and high safety, and is especially suitable for machining of the unmanageable metallic material.
Description
Technical field
The present invention relates to a kind of cutting working method of metal material, specifically a kind ofly can improve the difficult processing metal working (machining) efficiency, the quick removal difficult processing metal that Wheel-type cutting (grinding and milling) is combined with electric spark ablation also ensures machined surface quality and the electric spark of precision is induced the high-efficient cutting processing method of controlled ablate metals material.
Background technology
Along with industrial production and progress of science and technology, new material continues to bring out, and in these new materials, many is difficult processing metals, as high temperature alloy, titanium alloy, high strength steel, stainless steel etc.These materials have specific strength height, hardness height, advantage such as high temperature resistant, corrosion-resistant, wear-resisting, but the appearance of new material brings great difficulty also for traditional machining mode.Such as in traditional machine cut, the energy that these difficult-to-machine materials are consumed in plastic deformation is big, and is much bigger during cutting force ratio cutting ordinary metallic material; Cutting temperature height, a large amount of heat in metal cuttings that produce during cutting are difficult to the material internal conduction, even quality problems such as burn, crackle can occur at surface of the work; Cutter is easy to wear; The work hardening phenomenon is serious etc.These problems make traditional machine cut difficulty of processing of these difficult processing metals increase, and the cutter loss is serious, even can't process.
Spark machined as one of special processing technology mainly is to utilize electric energy and heat energy to remove material, does not have the machine cut power of macroscopic view between instrument and the workpiece, is suitable for the processing of difficult processing metal and complex profile part.But because machining energy is subjected to the restriction of pulse power energy output, machining area concentrates on again near the very little discharge channel, and it is very limited and utilization rate is lower to be transferred to the heat of machined material matrix, and therefore the efficient of processing is lower.Simultaneously, because traditional spark machined adopts working medias such as kerosene, can produce toxic gas discharging and a series of environment and security hidden trouble such as inflammable.
In order to remedy the deficiency of traditional spark machined, Chinese scholars has proposed novel electric discharge machining methods such as jet spark machined in spark machined in the gas, the liquid, spraying spark machined.Electric discharge machining method in the gas that the Tokyo positive allusion quotation of agro-industrial university state branch proposes, solved environment and safety problem to a certain extent, simultaneously, partial melting workpiece metal material splashes and sticks on the tool-electrode in the processing, compensate tool electrode loss, can obtain lower electrode wear rate.But because its discharging gap is less, easily be short-circuited or the arcing phenomenon, make discharge condition variation, working (machining) efficiency reduce greatly.Shanghai Communications University has proposed air blast electric spark processing method and spraying electric discharge machining method in the liquid.Jet spark machined has higher working (machining) efficiency, better surface quality and same low export license with respect to spark machined in the gas in the liquid.The advantage that the spraying spark machined combines gentle middle electric discharge machining method in the liquid makes discharging gap greater than spark machined in the gas neutralizer, dielectric punctures the formation discharge channel easily, high pressure fog has than the better cooling effect of processing in the gas, can improve the explosive force of discharge channel, improve process velocity.
The energy size that above-mentioned the whole bag of tricks adds man-hour still mainly depends on the output of the pulse power, and the capacity usage ratio of the general pulse power is less than half of gross energy, in addition, the energy that is used to process has only part to distribute to workpiece, some energy is lost in transmittance process in the peripheral medium, and this just makes that the utilization rate of machining energy is not high.If the output energy of power supply improves, spark machined efficient also can improve, but the output energy of power supply is big more, and the energy that is assigned on the tool-electrode is big more, and the corresponding electrode loss is also big more, and workpiece surface quality is also poor more.Therefore, the working (machining) efficiency of said method and surface quality all are restricted.
Summary of the invention
The objective of the invention is at the low problem of present difficult processing metal working (machining) efficiency, invent and a kind of grinding, Milling Process commonly used in the machine cut are combined with spark machined, make the difficult processing metal fast softening of area to be machined then cut the processing method of removal by controlled ablation mode.
Technical scheme of the present invention is:
A kind ofly induce the difficult processing metal high-efficient cutting processing method of controlled ablation, it is characterized in that it may further comprise the steps based on electric spark:
At first, make the Wheel-type cutting tool conduction with machine cut effect and rotating;
Secondly, between current-carrying part that makes the Wheel-type cutting tool under the effect of the direct current or the pulse power and difficult processing metal, produce spark discharge, utilize the spark discharge effect, the difficult-to-machine material surface is reached be in the state of activation more than the ignition temperature, feed continuously or intermittently and can make difficult processing metal that the reaction of ablating take place to machining area simultaneously with the combustion-supporting gas of difficult processing metal generation burning exothermic effect, generate the ablation product and discharge a large amount of heats, these heats act on the machined material matrix again, make the thermoplastic of difficult processing metal machining area even reach molten condition;
Again, utilize the machine cut effect of Wheel-type cutting tool (the insulation cutting teeth of the abrasive particle of the conductivity integral emery wheel or the interrupted emery wheel of slotting or cutter block) that the metal material of ablation product and softening or molten condition is removed;
Repeat above-mentioned process, controlled ablation and machine cut (grinding or milling) two states under the electric spark inducing action are hocketed all the time until process finishing.
Described combustion-supporting gas is a kind of in the oxygen, chlorine, nitrogen, fluorine gas of burning exothermic reaction or combination that they are several to take place with difficult processing metal.
The operating pressure of described combustion-supporting gas is 0.01 ~ 90 MPa.
Described Wheel-type cutting tool is emery wheel or milling cutter; Described combustion-supporting gas can be input to machining area from the inside of wheel disc or from the external machining area that is input to of wheel disc.
Described emery wheel is for adopting conductivity integral emery wheel whole or that slot interrupted, or the interrupted emery wheel of fluting of serve as reasons conduction tooth and grinding tooth composition is as the grinding of instrument, or milling cutter for adopting conduction tooth and insulation cutting teeth to be combined into, the insulation tooth is diamond, cubic boron nitride or pottery, is fixed on the milling cutter wheel disc by the mode of electroplating, clamping or weld.
Described difficult processing metal is for producing titanium alloy, high temperature alloy, high strength steel or the stainless steel material of oxidation reaction with combustion-supporting gas.
Described machining comprises the grinding and the milling cutter that adopt conduction tooth and insulation cutting teeth be combined into Milling Process as instrument of employing conduction emery wheel as instrument.
When feeding can produce the combustion-supporting gas of ablation exothermic effect with difficult processing metal continuously or intermittently to machining area, also spray working solution in the mode of parcel gas or machining area is immersed in the working solution with the compressing combustion-supporting gas to machining area, strengthen the ablation effect, and quickening the discharge of elaboration products, described working solution is water or non-flammable water-soluble working solution (as emulsion or compound working solution).
Thereby intermittently control or directly utilize the high speed rotary motion of wheel disc that ablated area is forced to shift to reach by the active of air flow controller and intermittently supply combustion-supporting gas, and then the control heat of ablating and discharging to machining area.The present invention is when feeding can produce the gas of ablation exothermic effect with difficult processing metal continuously or intermittently to machining area, also spray working solution in the mode of parcel gas or machining area is immersed in the working solution with the compressing combustion-supporting gas to machining area, strengthen the ablation effect, and quickening the discharge of elaboration products, described working solution is water or non-flammable water-soluble working solution (as emulsion or compound working solution).
Thereby thereby the present invention can intermittently control or directly utilize the high speed rotary motion of wheel disc that ablated area is forced to shift to reach to machining area and intermittently supplies the purpose that combustion-supporting gas reaches control ablation release heat by the active of air flow controller.
Processing method of the present invention also can further describe into:
First, the wheel disc of conduction (adopts conductivity integral emery wheel whole or that slot interrupted, also the interrupted emery wheel of fluting that can be made up of conduction tooth and grinding tooth is as the grinding of instrument or the milling cutter that adopts conduction tooth and insulation cutting teeth to be combined into) and difficult processing metal connect the two poles of the earth of power supply respectively, between wheel disc and difficult processing metal, produce discharge, make the difficult processing metal machining area reach the above and generation activation of ignition temperature, simultaneously to machining area aerating oxygen (or other combustion-supporting gas), under oxygen (or other combustion-supporting gas) effect, form high temperature ablation, release heat.
The second, the heat of Shao Shiing acts on difficult processing metal machining area matrix, makes matrix material be heated to softening even molten condition.Gas flow, pressure, wheel disc rotating speed etc. were adjusted when the control of ablation heat can rely on the intermittent entry of gas or gas to supply with continuously.The operating pressure of described gas is 0.01 ~ 90 MPa.
Three, under the shear action of grinding or milling, the softening part cutting of difficult processing metal is removed, expose new substrate material surface, along with the feeding of workpiece repeats above-mentioned process.
Can utilize the highly pressurised liquid working media to wash away machining area in the whole process, parcel gas, also can adopt whole machining area immersed working solution and in conjunction with high pressure towards the mode of liquid with compressing gas, strengthen the ablation effect, and quicken the discharge of elaboration products.Described machining medium is water or non-flammable water-soluble working solution (emulsion, compound working solution etc.)
Beneficial effect of the present invention:
The present invention is by (adopting conductivity integral emery wheel whole or that slot interrupted at the conduction wheel disc, also the interrupted emery wheel of fluting that can form by conduction tooth and grinding tooth as the grinding of instrument or adopt the conduction tooth and milling cutter that the cutting teeth that insulate is combined into) and difficult processing metal between the electric spark inducing action under, feed continuously or off and on can with difficult processing metal (titanium alloy, high temperature alloy etc.) gas (as oxygen) that ablation is reacted can take place, discharge a large amount of heat (exceeding 4 above orders of magnitude) than spark discharge energy output in the same time, these heats can directly diffuse to difficult processing metal machining area matrix, make matrix material produce softening effect, under the shear action of grinding or milling, be removed then.The suffered cutting force of wheel disc is very little in the process, therefore can carry out big degree of depth cutting, and because cutting force is very little, makes that the rigidity to lathe requires and can suitably reduce, and the life-span of cutter can prolong greatly.
The present invention utilizes a large amount of chemical energy of difficult processing metal ablation release by the inducing action of electric spark, and the difficult processing metal of softening machining area has improved working (machining) efficiency.Owing to reduced cutting force greatly, make that the cutter loss is less, prolonged service life, reduced the processing power consumption.Gas flow, pressure, wheel disc rotating speed etc. were adjusted when the control of ablation heat can rely on the intermittent entry of gas or gas to supply with continuously.
The present invention compares with conventional electric spark machine processing and can improve material removal efficient in tens of times of ground, has solved the low difficult problem of difficult processing metal working (machining) efficiency well, and to reducing the processing cost of difficult processing metal, enlarging range of application has very big effect.
Cutting force of the present invention is less, can suitably reduce for the requirement of lathe rigidity; Owing to adopted water or non-flammable water-soluble working solution as working media, do not exist traditional spark processing oil sex work medium easily to produce problems such as environmental pollution, disaster hidden-trouble, be a kind of efficient, low-loss, low cost, safety, free of contamination processing method.
Description of drawings
Fig. 1 is an abrasive machining device principle schematic of the present invention.
Wherein:
Fig. 1 (a) is that emery wheel conduction tooth spark discharge is induced activation difficult processing metal schematic diagram.
Fig. 1 (b) is a difficult processing metal ablation process schematic diagram under the oxygen effect.
Fig. 1 (c) is that the grinding tooth relies on the mechanical grinding power of abrasive particle to remove difficult processing metal process schematic diagram on the emery wheel.
Fig. 2 is a Milling Processes schematic diagram of the present invention.
Wherein:
Fig. 2 (a) is the schematic diagram that ignites of the discharge between conduction tooth and the difficult processing metal on the milling cutter.
Fig. 2 (b) is a difficult processing metal ablation process schematic diagram under the oxygen effect.
Fig. 2 (c) is an insulation cutting teeth cutting difficult processing metal process schematic diagram on the milling cutter.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
As shown in Figure 1.
A kind ofly induce the new method of controlled ablation and discharge grinding difficult processing metal based on electric spark, it may further comprise the steps:
At first, make the emery wheel conduction with machine cut effect and rotating; The conduction emery wheel can be circle or slots intermittently, and combustion-supporting gas is from being input to machining area in the emery wheel body or from the external machining area that is input to of emery wheel;
Secondly, under the effect of the direct current or the pulse power, make the current-carrying part of emery wheel and difficult processing metal (as titanium alloy, high temperature alloy, high strength steel or stainless steel material) between produce spark discharge, utilize the spark discharge effect, the difficult processing metal surface is reached be in the state of activation more than the ignition temperature, feed continuously or intermittently simultaneously and can produce the combustion-supporting gas of burning exothermic effect with difficult processing metal (operating pressure of control combustion-supporting gas is 0.01 ~ 90 MPa to machining area, can be oxygen, chlorine, in nitrogen or the fluorine gas one or more) make difficult processing metal that the reaction of ablating take place, generate the ablation product and discharge a large amount of heats, these heats act on the machined material matrix again, make the thermoplastic of difficult processing metal machining area even reach molten condition; When feeding can produce the combustion-supporting gas of ablation exothermic effect with difficult processing metal continuously or intermittently to machining area, also can spray working solution in the mode of parcel gas or machining area is immersed in the working solution with the compressing combustion-supporting gas to machining area, strengthen the ablation effect, and the discharge of acceleration elaboration products, described working solution is water or non-flammable water-soluble working solution (as emulsion or compound working solution), intermittently supply combustion-supporting gas thereby can intermittently control or directly utilize the high speed rotary motion of emery wheel that ablated area is forced to shift to reach by the active of air flow controller in addition to machining area, and then the control heat of ablating and discharging.
Again, utilize the machine cut effect that abrasive particle had of the conductivity integral emery wheel or the interrupted emery wheel of slotting that the metal material of ablation product and softening or molten condition is removed;
Repeat above-mentioned process, controlled ablation and grinding two states under the electric spark inducing action are hocketed all the time until process finishing.
Conduction emery wheel wheel disc and difficult processing metal connect the two poles of the earth of the pulse power respectively, adopt compound working solution as liquid-working-medium, surround by compound working solution around the high pressure oxygen, thereby the high speed rotary motion that directly utilizes conduction emery wheel wheel disc forces ablated area and shifts and reaches the effect that realizes intermittent air-flow air feed at machining area, by spraying compound working solution to machining area with the compressing fuel gas, strengthen the ablation effect, and quicken the discharge of elaboration products.
Electric spark is induced controlled ablation and grinding.This processing method is divided into three processes from microcosmic:
1, shown in Fig. 1 (a), under the spark discharge inducing action, form discharge channel between conduction emery wheel conduction tooth and the difficult processing metal, a small amount of difficult processing metal is by the spark discharge ablation, form the discharge pit, pit and near metal material form the region of activation because temperature is higher, and surfacing reaches more than the ignition temperature;
2, shown in Fig. 1 (b), the region of activation material is under the effect of oxygen (or other fuel gas), violent ablation reaction takes place, the region of activation is further enlarged, discharge a large amount of heats simultaneously, heat acts on difficult processing metal machining area matrix, makes it be heated to softening even molten state, thereby forms the softened zone;
3, shown in Fig. 1 (c), under the continuous action of oxygen, the softened zone of difficult processing metal also further enlarges, then under the effect of the abrasive particle of wheel grinding tooth, just only need very little grinding force the softened zone grinding of difficult processing metal can be removed.The pressure of aerating oxygen can be selected between 0.01 ~ 90 MPa.Repeat said process until machining.
In the specific process, feeding and TRAJECTORY CONTROL can be done the servo feed motion with respect to the conduction emery wheel by making difficult processing metal, and adopt TRAJECTORY CONTROL ablation difficult processing metal, finish the control of machining shape and precision.
Embodiment two.
As shown in Figure 2.
A kind ofly induce the new method of controlled ablation and Milling Process difficult processing metal based on electric spark, it may further comprise the steps:
At first, make the milling cutter conduction with machine cut effect and rotating; Milling cutter can be combined by conduction tooth, insulation cutting teeth and wheel disc, the insulation tooth can be diamond, cubic boron nitride or pottery, be fixed on the wheel disc by the mode of electroplating, clamping or weld, combustion-supporting gas can be input to machining area or be input to machining area outside wheel disc in wheel disc;
Secondly, under the effect of the direct current or the pulse power, make the current-carrying part of milling cutter and difficult processing metal (as titanium alloy, high temperature alloy, high strength steel or stainless steel material) between produce spark discharge, utilize the spark discharge effect, the difficult-to-machine material surface is reached be in the state of activation more than the ignition temperature, feed continuously or intermittently simultaneously and can produce the combustion-supporting gas of burning exothermic effect with difficult processing metal (operating pressure of control combustion-supporting gas is 0.01 ~ 90 MPa to machining area, can be oxygen, chlorine, in nitrogen or the fluorine gas one or more) make difficult processing metal that the reaction of ablating take place, generate the ablation product and discharge a large amount of heats, these heats act on the machined material matrix again, make the thermoplastic of difficult processing metal machining area even reach molten condition; When feeding can produce the combustion-supporting gas of ablation exothermic effect with difficult processing metal continuously or intermittently to machining area, also can spray working solution in the mode of parcel gas or machining area is immersed in the working solution with the compressing combustion-supporting gas to machining area, strengthen the ablation effect, and the discharge of acceleration elaboration products, described working solution is water or non-flammable water-soluble working solution (as emulsion or compound working solution), intermittently supply combustion-supporting gas thereby can intermittently control or directly utilize the high speed rotary motion of wheel disc that ablated area is forced to shift to reach by the active of air flow controller in addition to machining area, and then the control heat of ablating and discharging.
Again, the metal material of ablation product and softening or molten condition is removed in the machine cut effect that utilizes milling cutter to have;
Repeat above-mentioned process, controlled ablation and milling two states under the electric spark inducing action are hocketed all the time until process finishing.The two poles of the earth that milling cutter that conduction tooth and insulation cutting teeth are combined into and difficult processing metal connect the pulse power respectively, adopt compound working solution as liquid-working-medium, surround by compound working solution around the high pressure oxygen, thereby the high speed rotary motion that directly utilizes milling cutter forces ablated area and shifts and reaches the effect that realizes intermittent air-flow air feed at machining area, by spraying compound working solution to machining area with the compressing fuel gas, strengthen the ablation effect, and quicken the discharge of elaboration products.
Electric spark induces controlled ablation and Milling Process to be divided into three processes from microcosmic:
1, shown in Fig. 2 (a), under the spark discharge inducing action, form discharge channel between conduction tooth on the milling cutter and the difficult processing metal, a small amount of difficult processing metal is by the spark discharge ablation, form the discharge pit, pit and near metal material form the region of activation because temperature is higher, and surfacing reaches more than the ignition temperature;
2, shown in Fig. 2 (b), the region of activation material is under the oxygen effect of being brought into by groove, violent ablation reaction takes place, the region of activation is further enlarged, discharge a large amount of heats simultaneously, heat acts on difficult processing metal machining area matrix, makes it be heated to softening even molten condition, thereby forms the softened zone;
3, shown in Fig. 2 (c), under the continuous action of oxygen, the softened zone of difficult processing metal also further enlarges, then under the effect of milling cutter insulation cutting teeth, just only need very little cutting force the softened zone cutting of difficult processing metal can be removed.The pressure of aerating oxygen can be selected between 0.01 ~ 90 MPa.Repeat said process until machining.
Can make difficult processing metal do the servo feed motion when specifically adding feeding in man-hour and TRAJECTORY CONTROL, and adopt TRAJECTORY CONTROL ablation difficult processing metal, finish the control of machining shape and precision ground with respect to milling cutter.
The further operation principle of discharging induced processing of the present invention can be the related content of the Chinese patent application of 201010545526.X and 201010544351.0 referring to application number.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (9)
1. induce the difficult processing metal high-efficient cutting processing method of controlled ablation based on electric spark for one kind, it is characterized in that it may further comprise the steps:
At first, make the Wheel-type cutting tool conduction with machine cut effect and rotating;
Secondly, between current-carrying part that makes the Wheel-type cutting tool under the effect of the direct current or the pulse power and difficult processing metal, produce spark discharge, utilize the spark discharge effect, the difficult-to-machine material surface is reached be in the state of activation more than the ignition temperature, feed continuously or intermittently and can make difficult processing metal that the reaction of ablating take place to machining area simultaneously with the combustion-supporting gas of difficult processing metal generation burning exothermic effect, generate the ablation product and discharge a large amount of heats, these heats act on the machined material matrix again, make the thermoplastic of difficult processing metal machining area even reach molten condition;
Again, utilize the machine cut effect of Wheel-type cutting tool that the metal material of ablation product and softening or molten condition is removed;
Repeat above-mentioned process, controlled ablation and machine cut two states under the electric spark inducing action are hocketed all the time until process finishing.
2. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1 is characterized in that described combustion-supporting gas is for a kind of in the oxygen, chlorine, nitrogen, fluorine gas of burning exothermic reaction or combination that they are several taking place with difficult processing metal.
3. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1 and 2, the operating pressure that it is characterized in that described combustion-supporting gas is 0.01 ~ 90 MPa.
4. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1 is characterized in that described Wheel-type cutting tool is emery wheel or milling cutter; Described combustion-supporting gas can be input to machining area from the inside of wheel disc or from the external machining area that is input to of wheel disc.
5. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 4, it is characterized in that described emery wheel is for adopting conductivity integral emery wheel whole or that slot interrupted, or the interrupted emery wheel of fluting of serve as reasons conduction tooth and grinding tooth composition is as the grinding of instrument, or milling cutter for adopting conduction tooth and insulation cutting teeth to be combined into, the insulation tooth is diamond, cubic boron nitride or pottery, is fixed on the milling cutter wheel disc by the mode of electroplating, clamping or weld.
6. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1 is characterized in that described difficult processing metal is for producing titanium alloy, high temperature alloy, high strength steel or the stainless steel material of oxidation reaction with combustion-supporting gas.
7. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1 is characterized in that described machining comprises the grinding and the milling cutter that adopt conduction tooth and insulation cutting teeth be combined into Milling Process as instrument of employing conduction emery wheel as instrument.
8. high-efficient cutting processing method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1, feeding it is characterized in that when can produce the combustion-supporting gas of ablation exothermic effect with difficult processing metal continuously or intermittently to machining area, also spray working solution in the mode of parcel gas or machining area is immersed in the working solution with the compressing combustion-supporting gas to machining area, strengthen the ablation effect, and quickening the discharge of elaboration products, described working solution is water or non-flammable water-soluble working solution.
9. cutting working method of inducing the difficult processing metal of controlled ablation based on electric spark according to claim 1, it is characterized in that intermittently controlling or directly utilizing the high speed rotary motion of wheel disc to make ablated area force transfer by the active of air flow controller, intermittently supply combustion-supporting gas thereby reach to machining area, and then the heat of control ablation release.
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| CN102974902A (en) * | 2012-11-27 | 2013-03-20 | 南京航空航天大学 | Electric spark induction controllable erosion and mechanical finishing compound cutting dual-servo feeding processing system |
| CN103692038A (en) * | 2013-12-05 | 2014-04-02 | 南京航空航天大学 | Intractable metal material discharge ablation processing method based on quantitative high-pressure and low-pressure combination gas inlet system |
| CN103862392A (en) * | 2014-03-24 | 2014-06-18 | 佛山市博尔特锯业有限公司 | PCD composite diamond cutter grinding wheel and grinding method thereof |
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| CN102974902A (en) * | 2012-11-27 | 2013-03-20 | 南京航空航天大学 | Electric spark induction controllable erosion and mechanical finishing compound cutting dual-servo feeding processing system |
| CN103692038A (en) * | 2013-12-05 | 2014-04-02 | 南京航空航天大学 | Intractable metal material discharge ablation processing method based on quantitative high-pressure and low-pressure combination gas inlet system |
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| CN111168170B (en) * | 2020-02-27 | 2021-04-02 | 常州工学院 | Electrolytic grinding and milling device and method for group of narrow grooves |
| CN111390311A (en) * | 2020-04-17 | 2020-07-10 | 湖南科技大学 | Milling cutter, ultrasonic electric spark milling equipment and milling method |
| CN111390311B (en) * | 2020-04-17 | 2021-08-31 | 湖南科技大学 | Milling cutter, ultrasonic electric spark milling equipment and milling method |
| CN113414592A (en) * | 2020-04-17 | 2021-09-21 | 湖南科技大学 | Milling method |
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