CN103786005A - Workpiece machining method and electric spark machining device - Google Patents

Workpiece machining method and electric spark machining device Download PDF

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Publication number
CN103786005A
CN103786005A CN201210428999.0A CN201210428999A CN103786005A CN 103786005 A CN103786005 A CN 103786005A CN 201210428999 A CN201210428999 A CN 201210428999A CN 103786005 A CN103786005 A CN 103786005A
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China
Prior art keywords
workpiece
electrode
discharge machining
electric discharge
machining apparatus
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CN201210428999.0A
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Chinese (zh)
Inventor
罗元丰
魏斌
陈晓宾
吴勇
S.J.龙廷
高清
郭媛媛
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General Electric Co
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General Electric Co
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Priority to CN201210428999.0A priority Critical patent/CN103786005A/en
Publication of CN103786005A publication Critical patent/CN103786005A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H5/00—Combined machining
    • B23H5/04—Electrical discharge machining combined with mechanical working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B23H1/04—Electrodes specially adapted therefor or their manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B23H1/10—Supply or regeneration of working media

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

The invention relates to a workpiece machining method. The workpiece machining method includes the following steps: subjecting a workpiece to water-jet cutting pre-machining to form a coarse profile; and subjecting the coarse profile of the workpiece to electric spark finish machining. The electric spark finish machining step includes: providing multiple electrodes, allowing the electrodes to get close to the workpiece; providing voltage and machining fluid between the electrodes and the workpiece; allowing the electrodes and the workpiece to rotate around a single rotating shaft to perform finish machining on the coarse profile. The invention further relates to an electric spark machining device. The electric spark machining device comprises an electrode assembly and a power supply system, the electrode assembly comprises the multiple electrodes sharing single rotating shaft, and the power supply system is electrically connected to the electrodes and the workpiece and used for providing voltage between the electrodes and the workpieces. Water-jet cutting pre-machining is fast, the electrodes can perform finish machining on the workpiece at the same time, and a movement track between the electrodes and the workpiece is simple and easy to control, so that machining efficiency is improved.

Description

Work piece processing method and electric discharge machining apparatus
Technical field
The present invention, about a kind of Work piece processing method and electric discharge machining apparatus, relates in particular to a kind of Work piece processing method and electric discharge machining apparatus that uses spark machined.
Background technology
At present, electric discharge machining method is used for cutting conductive material, for example steel, graphite, silicon and magnetic material, and be generally used for processing metal workpiece.The method of traditional processing metal workpiece comprises carrys out preprocessing workpiece with electric discharge machining method, electrochemical machining method or electric spark wire cutting method, then carrys out finishing workpiece with the electric discharge machining method with high manufacturing accuracy.But the processing speed of electric discharge machining method, electrochemical machining method or electric spark wire cutting method is very slow, thereby cause processing consuming time very large.Particularly, in being processed to form labyrinth, process consuming time huge.For example process turbine blade, turbine blade has blade and each the blade shape complexity that number is a lot, thereby process time is very long.At present, complex-shaped blade pass is crossed single electrode and is rotated one by one and be processed to form around multiple axles.But the method efficiency is lower, and the movement locus complexity of electrode.Thereby the productivity of conventional method is lower.
Therefore, be necessary to provide a kind of Work piece processing method and electric discharge machining apparatus to solve above mentioned at least one technical problem.
Summary of the invention
One aspect of the present invention is to provide a kind of Work piece processing method.This Work piece processing method comprises the following steps: water cutting preprocessing workpiece forms coarse contour; And the described coarse contour of workpiece described in electric spark fine finishining.The accurately machined step of electric spark comprises: multiple electrodes are provided; By described electrode near described workpiece; Provide voltage and working fluid between described electrode and described workpiece; And between described electrode and described workpiece around the single rotating shaft coarse contour described in fine finishining that rotates.
Another aspect of the present invention is to provide a kind of electric discharge machining apparatus.This electric discharge machining apparatus comprises: electrode assemblie, comprises multiple electrodes of sharing single rotating shaft; And electric power system, be electrically connected on described electrode and described workpiece, in order to provide voltage between described electrode and described workpiece.
The present invention adopts water patterning method preprocessing workpiece and adopts multiple electrodes to carry out electric spark fine finishining, the speed of water cutting preprocessing, and multiple electrode processing work simultaneously, thus improve working (machining) efficiency.
Accompanying drawing explanation
Be described for embodiments of the present invention in conjunction with the drawings, the present invention may be better understood, in the accompanying drawings:
Figure 1 shows that the schematic diagram of an embodiment of water cutter sweep preprocessing workpiece of the present invention;
Figure 2 shows that the schematic diagram of an embodiment of electric discharge machining apparatus of the present invention and workpiece;
Figure 3 shows that the electrode assemblie of electric discharge machining apparatus of the present invention is along the cutaway view of the A-A line in Fig. 2;
Figure 4 shows that the schematic diagram of another embodiment of electric discharge machining apparatus of the present invention and workpiece;
Figure 5 shows that the flow chart of an embodiment of Work piece processing method;
Figure 6 shows that the phantom of the workpiece shown in Fig. 1;
Figure 7 shows that the phantom of the workpiece shown in Fig. 6, wherein electrode inserts in workpiece;
Figure 8 shows that the phantom after the workpiece fine finishining shown in Fig. 6.
The specific embodiment
Unless otherwise defined, technical term used herein or scientific terminology should be and in field, have the ordinary meaning that the personage of general technical ability understands under the present invention." first " " second " using in patent application specification of the present invention and claims and similarly word do not represent any order, quantity or importance, and are just used for distinguishing different parts.Equally, the similar words such as " " or " " do not represent restricted number yet, but represent to exist at least one." comprise " or " comprising " etc. similarly word mean to appear at " comprising " or " comprising " element above or object and contain and appear at element or the object that " comprising " or " comprising " enumerate below and be equal to, do not get rid of other elements or object." connection " or " being connected " etc. similarly word be not defined in connection physics or machinery, but can comprise electrical connection, no matter be directly or indirectly.
Figure 1 shows that the schematic diagram of the water cutter sweep 50 preprocessing workpiece 20 of an embodiment.Workpiece 20 can be by being made by the conductive material of water cutting technique and electrical discharge machining process processing arbitrarily.Workpiece 20 comprises coarse contour 29 and location division 25.Water cutter sweep 50 preprocessing workpiece 20 form coarse contour 29, and coarse contour 29 comprises some conduits 21 and some cutting parts 23 being formed between adjacent conduit 21.Location division 25 was formed at workpiece 20 before preprocessing workpiece 20.Location division 25 can form by laser cutting method, water patterning method, spark erosion machining, Electrolyzed Processing method, Wire EDM method or other processing methods.In this embodiment, location division 25 is arranged on the axle 27 of workpiece 20 in pairs.Location division 25 can be the structure of through hole, groove or other auxiliary positioning workpiece 20.In the time of water cutting preprocessing, workpiece 20 is positioned water cutter sweep 50 by location division 25.
Water cutter sweep 50 comprises nozzle 501, the control system 503 being connected with nozzle 501 and the support component 60 that is used for supporting workpiece 20.In the present embodiment, support component 60 is dull and stereotyped, and workpiece 20 is placed on dull and stereotyped surface.In other embodiments, support component 60 can be support bar or other forms of supporting construction.Support component 60 has with location division 25 and holds the keeper 61 coordinating.Keeper 61 and location division 25 coordinate can prevent that workpiece 20 is offset or rotates with respect to support component 60.Keeper 61 can be that bolt, screw or other can hold the retaining element coordinating with location division 25.
Control system 503 is used for Control Nozzle 501 by predetermined route motion.In certain embodiments, water cutter sweep 50 sprays abrasive (not shown) from nozzle 501, and promptly cut workpiece 20 forms coarse contour 29.Abrasive can be fluid under pressure, for example, comprises grinding medium (for example garnet) and promote preprocessing in water.In the embodiment shown in fig. 1, water cutter sweep 50 has single-nozzle 501, is processed to form a conduit 21 at every turn.In certain embodiments, water cutter sweep 50 has multiple nozzles 501, can be processed to form multiple conduits 21 simultaneously.In certain embodiments, the water cutter sweep 50 that has multiple nozzles 501 can use a nozzle to process at every turn.In certain embodiments, moving nozzle 501 carrys out preprocessing workpiece 20.In some other embodiment, workpiece 20 is positioned over support component 60, and movable support parts 60 allow fixed nozzle 501 carry out preprocessing workpiece 20.The processing speed of water cutting preprocessing, far away higher than the processing speed of spark machined, Electrolyzed Processing, wire electric discharge machine method, has therefore improved the process velocity of preprocessing process.
Figure 2 shows that the electric discharge machining apparatus 1000 of an embodiment and the schematic diagram of workpiece 20.Electric discharge machining apparatus 1000 is used for the coarse contour 29 of finishing workpiece 20.Workpiece 20 can be finish-machined to the product of reservation shape, for example turbine blade.In the time of electric spark fine finishining, workpiece 20 is positioned electric discharge machining apparatus 1000 by location division 25.
Electric discharge machining apparatus 1000 comprises support component 30, electrode assemblie 10 and electric power system 40.In electric discharge machining apparatus 1000 fine finishining processes, support component 30 supporting workpieces 20.Support component 30 has with the location division 25 of workpiece 20 and holds the keeper 31 coordinating, and location division 25 coordinates and makes workpiece 20 be positioned support component 30 with keeper 31.In the embodiment shown in Figure 2, support component 30 is a flat board, and workpiece 20 is positioned this planar surface.Keeper 31 can be that bolt, screw or other can hold the retaining element coordinating with location division 25.In certain embodiments, the support component 30 that after preprocessing, workpiece 20 moves to electric discharge machining apparatus 1000 from the support component 60 of water cutter sweep 50 carries out fine finishining.In some other embodiment, in 50 preprocessings of water cutter sweep and electric discharge machining apparatus 1000 fine finishining processes, workpiece 20 is fixed on same support component, and after preprocessing, workpiece 20 moves to electric discharge machining apparatus 1000 together with this support component from water cutter sweep 50 and carries out fine finishining.In further embodiments, workpiece 20 keeps motionless, and after preprocessing, water cutter sweep 50 is removed, and electric discharge machining apparatus 1000 carries out fine finishining near workpiece 20.
In the embodiment shown in Figure 2, electrode assemblie 10 comprise support 11, multiple fixtures 17 of the multiple electrodes 13, connecting electrode 13 and the support 11 that are connected with support 11 and the bull stick 15 being connected with support 11.In the present embodiment, support 11 is substantially discoideus.In other embodiments, support 11 can be other shapes that are beneficial to processing work 20.In the present embodiment, bull stick 15 is assembled in the central authorities of support 11.In another embodiment, bull stick 15 can be one-body molded with support 11.Bull stick 15 is controlled and is moved and swinging mounting 11 and electrode 13 by the control system (not shown) of electric discharge machining apparatus 1000.In certain embodiments, electrode 13 fits together with bull stick 15 and support 11.In the present embodiment, electrode 13 fits together by fixture 17 and bull stick 15 and support 11, and each fixture 17 connects an electrode 13 and support 11, thus ease of assembly and unloading electrode 13.In another embodiment, electrode 13 and support 11 can be one-body molded.In an embodiment, electrode 13, support 11 and bull stick 15 can be one-body molded again.
Electrode 13 with respect to axle 150 symmetry arrangement of bull stick 15, so can guarantee electrode assemblie 10 balances in this embodiment.In the present embodiment, electrode 13 near and place in the face of workpiece 20 substantially, be beneficial to processing work 20.Electrode 13 is shared single rotating shaft.In the present embodiment, single rotating shaft is the axle 150 of bull stick 15, and electrode 13 rotates with respect to the rotate axle 150 of bar 15 of workpiece 20.In the present embodiment, electrode 13 is along with the rotate axle 150 of bar 15 of support 11 rotates the material of cut workpiece 20.In another embodiment, workpiece 20 rotates and is processed by electrode 13.Electrode 13 and/or workpiece 20 can rotate to realize processing around single axle, and the motion path of electrode 13 and/or workpiece 20 is simpler, be therefore easy to design or selection control system carrys out control electrode 13 and/or workpiece 20 moves along motion path.
The shape of electrode 13 can design according to the reservation shape of workpiece 20.In the illustrated embodiment, each electrode 13 has three-dimensional structure and forms the profile of workpiece 20 complexity, and electrode 13 shapes are substantially identical.In certain embodiments, one or more electrodes 13 have three-dimensional structure, and the shape of electrode 13 can be not identical.In the illustrated embodiment, each electrode 13 comprises the first machined surface 131 and the second machined surface 133 with respect to the first machined surface 131.The first machined surface 131 and the second machined surface 133 bases profile and specification processing work 20 respectively separately.In the present embodiment, the first machined surface 131 is concave surface, can on workpiece 20, form corresponding convex surface (not shown).The second machined surface 133 is convex surface, can on workpiece 20, form corresponding concave surface (not shown).
In one embodiment, workpiece 20 can be by the first machined surface 131 or the second machined surface 133 fine finishining.In another embodiment, workpiece 20 can be in succession by the first machined surface 131 and the second machined surface 133 fine finishining.In one embodiment, electrode 13 can be in succession near and in the face of the relative both sides of workpiece 20, carry out processing work 20 with the second machined surface 133 from the relative both sides of workpiece 20 with the first machined surface 131 respectively.Electrode 13 can enter conduit 21 use the first machined surfaces 131 from the end face of workpiece 20 22 and carry out finishing workpiece 20.Afterwards, workpiece 20 turns over turnback, makes end face 22 against support component 30, and the bottom surface 24 of workpiece 20 is in the face of electrode 13.Then, electrode 13 enters conduit 21 use the second machined surfaces 133 and carrys out finishing workpiece 20 from the bottom surface 24 of workpiece 20.
In certain embodiments, workpiece 20 keeps motionless, and traveling electrode 13 is respectively from the relative two sides processing work 20 of workpiece 20.The first machined surface 131 is from a side processing work 20 of workpiece 20, and opposite side the second machined surface 133 that electrode 13 moves on to workpiece 20 carrys out processing work 20.In certain embodiments, electrode 13 rotates respectively with respect to workpiece 20 in the opposite direction from a side of workpiece 20, carrys out processing work 20 respectively with the first machined surface 131 and the second machined surface 133.Electrode 13 can enter conduit 21 from the end face of workpiece 20 22.Rotate in conduit 21 axle 150 of bar 15 of electrode 13 is rotated counterclockwise, and with the first machined surface 131 finishing workpieces 20, the axle 150 of the bar 15 that then rotates in conduit 21 turns clockwise, with the second machined surface 133 finishing workpieces 20.
In certain embodiments, workpiece 20 is formed different shapes by electrode 13 fine finishining of two groups of different structures in succession.In one embodiment, workpiece 20 is processed by second group of electrode after being processed by first group of electrode.Electrode 13 shown in Fig. 2 can be used as first group of electrode pair workpiece 20 and processes.After first group of electrode machines, first group of electrode unloads from support 11, and second group of electrode (not shown) is mounted to support 11.Workpiece 20 turns over turnback, makes end face 22 against support component 30.Then second group of electrode pair workpiece 20 processed.First group of electrode processed from the relative both sides of workpiece 20 respectively with second group of electrode.In certain embodiments, workpiece 20 keeps motionless, and first group of electrode is from a side of workpiece 20 processes, and the relative opposite side that second group of electrode moves on to workpiece 20 is processed.In certain embodiments, workpiece 20 can be processed by the electrode of different structure more than two 13.In certain embodiments, first group of electrode and second group of electrode are assembled in respectively two independently supports.
In the embodiment shown in Figure 2, the number of electrode 13 is less than the number at the position (for example conduit 21) of the needs processing of workpiece 20.Some conduits 21 of time processing, then some conduits 21 in residue conduit 21 are processed in rotate axle 150 rotation of bar 15 of electrode 13, so repeatedly process all conduits 21.In some embodiment, the number of conduit 21 is integral multiples of electrode 13 numbers.In certain embodiments, the number of electrode 13 equals the number of conduit 21, can all conduits 21 of disposable processing.
Electric power system 40 is electrically connected on electrode 13 and workpiece 20, in order to provide voltage between electrode 13 and workpiece 20.In certain embodiments, electric power system 40 is integrated in control system (not shown).Electric power system 40 can comprise that single cycle circuit or many cycling circuits carry out control electrode 13 in succession and periodically electric discharge.When electric spark fine finishining, working fluid (not shown) is provided between electrode 13 and workpiece 20.Working fluid can be dielectric oil, and for example, kerosene is basic dielectric oil.
Figure 3 shows that the cutaway view of the electrode assemblie 10 shown in Fig. 2.In this embodiment, electrode assemblie 10 is provided with the irrigation channel 19 flowing through for flushing liquor (not shown).After workpiece 20 fine finishining, flushing liquor rinses workpiece 20 by irrigation channel 19, removes the fragment or the residue that cut down from workpiece 20.In the illustrated embodiment, irrigation channel 19 comprise be formed at bull stick 15 access road 151, be formed at runner 111 in support 11, be formed at fixture 17 exit passageway 171, be formed at the transition passage 173 of fixture 17 and be formed at the electrode channel 135 in electrode 13.Access road 151, runner 111 and exit passageway 171 are communicated with.Access road 151, runner 111, transition passage 173 and electrode channel 135 are communicated with.
Flushing liquor injects from access road 151, and flow through runner 111 and transition passage 173, flow out to workpiece 20 from exit passageway 171 and electrode channel 135.In conjunction with reference to figure 2, after the conduit 21 electric spark fine finishining of workpiece 20, flushing liquor rinses each conduit 21.In this embodiment, flushing liquor comprises working fluid.In another embodiment, flushing liquor can be water or other any flushable workpiece 20 and the liquid that can not destroy workpiece 20.
Figure 4 shows that the electric discharge machining apparatus 2000 of another embodiment and the schematic diagram of workpiece 200.Workpiece 200 water cutting preprocessings form the coarse contour that comprises some conduits (not shown).Workpiece 200 is also formed with location division 205.
Electric discharge machining apparatus 2000 comprises support bar 300, electrode assemblie 100 and electric power system 400.Support bar 300 is provided with the location division 205 of workpiece 200 and holds the keeper 301 coordinating, and location division 205 and keeper 301 cooperations make workpiece 200 be positioned support bar 300.Control system (not shown) is controlled support bar 300 and is rotated, and electrode assemblie 10 can maintain static, and workpiece 200 is realized fine finishining along with support bar 300 rotates.The electric power system 400 of this embodiment is similar to the electric power system 40 shown in Fig. 2, and its electrode electrically connected 103 and workpiece 200 are used to provide voltage between electrode 103 and workpiece 200.
Multiple fixtures 107 of multiple electrodes 103, connecting electrode 103 and support 101 that electrode assemblie 100 comprises support 101, be connected with support 101 and the bull stick 105 being connected with support 101.In this embodiment, support 101 is substantially arc.The control system (not shown) of electric discharge machining apparatus 2000 is controlled bull stick 105, and support 101 can move near workpiece 200 or away from workpiece 200 along with bull stick 105.Bull stick 105 extends perpendicular to electrode 103.
Electrode 103 near and towards workpiece 200.In this embodiment, electrode 103 cambers are arranged.The structure of electrode 103 is similar to the structure of the electrode 13 shown in Fig. 2.In this embodiment, each electrode 103 has three-dimensional structure.Electrode 103 shares single rotating shaft, and in this embodiment, single rotating shaft is the axle 303 of support bar 300.In this embodiment, support bar 300 drives workpiece 200 to rotate to realize processing around the axle of support bar 300.In another embodiment, electrode 103 can rotate processing work 200 with respect to workpiece 200.In this embodiment, the number of electrode 103 is less than the number of the conduit (not shown) of workpiece 200.Some conduits of time processing, then workpiece 200 rotates to process other conduits around the axle of support bar 300, so repeatedly processes all conduits.
Figure 5 shows that the flow chart of the Work piece processing method 500 of an embodiment.Workpiece can be the workpiece 20 or 200 in Fig. 1,2 or 4.Work piece processing method 500 comprises step 510 and step 520.In step 510, water cutting preprocessing workpiece forms coarse contour.Water cutter sweep 50 shown in Fig. 1 can be used to carry out water cutting preprocessing and obtains coarse contour 29.In step 520, the coarse contour of electric spark finishing workpiece.Electric discharge machining apparatus 1000 or 2000 shown in Fig. 2 or 4 can be used to carry out fine finishining.
Step 520 comprises sub-step 530,540,550 and 560.In sub-step 530, provide multiple electrodes.Electrode can be the electrode 13 or 103 shown in Fig. 2 or 4.In sub-step 540, by electrode near workpiece.In one embodiment, electrode is to static workpiece motion s.In another embodiment, workpiece is to static electrode movement.Again in an embodiment, workpiece and electrode relative motion.In step 550, provide voltage and working fluid between electrode and workpiece.Generation current between electrode and workpiece. Electric power system 40 or 400 shown in Fig. 2 or 4 can be used to provide voltage.
In certain embodiments, workpiece and electrode are immersed in working fluid.In further embodiments, one or more nozzle ejection working fluids are between electrode and workpiece.In step 560, between electrode and workpiece around single rotating shaft rotate the coarse contour of finishing workpiece.Electrode moves until the material of desired depth is cut to the coarse contour of workpiece.In one embodiment, electrode rotates around single rotating shaft with respect to workpiece.In another embodiment, workpiece rotates around single rotating shaft with respect to electrode.In an embodiment, electrode and workpiece relatively rotate again.
In certain embodiments, before preprocessing, on workpiece, form location division, for example the location division 25,205 shown in Fig. 1,2 and 4.In the step of water cutting preprocessing, workpiece is positioned water cutter sweep by location division, and in the accurately machined step of electric spark, workpiece is positioned electric discharge machining apparatus by location division.In certain embodiments, after workpiece fine finishining, provide flushing liquor to flow through irrigation channel (example irrigation channel 19 as shown in Figure 3) and rinse workpiece.
Figure 6 shows that the phantom of the workpiece 20 shown in Fig. 1.Conduit 21 is formed by water cutting and comprises the first side wall 211 and the second sidewall 212 with respect to the first side wall 211.Figure 7 shows that the phantom of workpiece 20 shown in Fig. 6, wherein electrode 13 inserts in conduit 21.The first machined surface 131 of electrode 13 is near the first side wall 211 of conduit 21.Figure 8 shows that the phantom after workpiece 20 shown in Fig. 6 is by the first machined surface 131 fine finishining of electrode 13.With reference to figure 7 and Fig. 8, while providing voltage and working fluid between electrode 13 and workpiece 20, electrode 13 moves until the material of desired depth is cut to the first side wall 211 of conduit 21, thus the wall 214 that the interior formation of conduit 21 machines.
Although describe the present invention in conjunction with specific embodiment, those skilled in the art will appreciate that and can make many modifications and modification to the present invention.Therefore, recognize, the intention of claims is to be encompassed in all such modifications and the modification in true spirit of the present invention and scope.

Claims (14)

1. a Work piece processing method, is characterized in that, it comprises the following steps:
Water cutting preprocessing workpiece forms coarse contour; And
The described coarse contour of workpiece described in electric spark fine finishining, it comprises:
Multiple electrodes are provided;
By described electrode near described workpiece;
Provide voltage and working fluid between described electrode and described workpiece; And
Between described electrode and described workpiece around the single rotating shaft coarse contour described in fine finishining that rotates.
2. Work piece processing method as claimed in claim 1, is characterized in that: described electrode with bull stick together with bracket assembled, the axle that described single rotating shaft is described bull stick, described electrode rotates around the axle of described bull stick with respect to described workpiece.
3. Work piece processing method as claimed in claim 2, is characterized in that: in described support, be provided with runner, described Work piece processing method further comprises that providing flushing liquor to flow through described runner rinses described workpiece.
4. Work piece processing method as claimed in claim 3, is characterized in that: in described electrode, be provided with the electrode channel being communicated with described runner.
5. Work piece processing method as claimed in claim 1, is characterized in that: the step rotating around single rotating shaft between described electrode and described workpiece comprises with respect to described electrode rotates described workpiece.
6. Work piece processing method as claimed in claim 1, is characterized in that: described at least one, electrode has three-dimensional structure.
7. as the Work piece processing method as described in arbitrary in claim 1 to 6, it is characterized in that: the step that described Work piece processing method is further included in water cutting preprocessing forms location division in described workpiece before, be positioned water cutter sweep at workpiece described in the step of water cutting preprocessing by described location division, be positioned electric discharge machining apparatus at workpiece described in the accurately machined step of electric spark by described location division.
8. an electric discharge machining apparatus, in order to processing work, is characterized in that, it comprises:
Electrode assemblie, comprises multiple electrodes of sharing single rotating shaft; And
Electric power system, is electrically connected on described electrode and described workpiece, in order to provide voltage between described electrode and described workpiece.
9. electric discharge machining apparatus as claimed in claim 8, is characterized in that: described electrode assemblie comprises bull stick and support, described electrode with described bull stick together with described bracket assembled, and the described single rotating shaft axle that is described bull stick.
10. electric discharge machining apparatus as claimed in claim 9, is characterized in that: in described support, be provided with the runner flowing through for flushing liquor.
11. electric discharge machining apparatus as claimed in claim 10, is characterized in that: in described electrode, be provided with the electrode channel being communicated with described runner.
12. electric discharge machining apparatus as claimed in claim 9, is characterized in that: described electrode assemblie comprises multiple fixtures, and described in each, fixture connects a described electrode and described support.
13. as the electric discharge machining apparatus as described in arbitrary in claim 8 to 12, it is characterized in that: described at least one, electrode has three-dimensional structure.
14. electric discharge machining apparatus as claimed in claim 8, is characterized in that: described electrode arrangement camber.
CN201210428999.0A 2012-10-31 2012-10-31 Workpiece machining method and electric spark machining device Pending CN103786005A (en)

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CN106735633A (en) * 2016-12-23 2017-05-31 北京市电加工研究所 A kind of double shrouded wheel electric discharge machining apparatus and processing method
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CN113333881A (en) * 2021-06-18 2021-09-03 江苏江航智飞机发动机部件研究院有限公司 Self-adaptive machining method for front edge and rear edge of turbine blade of aero-engine

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