CN106825806B - A kind of device and method in the introduction by magnetic field electrolysis curved hole of electric spark Compound Machining - Google Patents
A kind of device and method in the introduction by magnetic field electrolysis curved hole of electric spark Compound Machining Download PDFInfo
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- CN106825806B CN106825806B CN201710197211.2A CN201710197211A CN106825806B CN 106825806 B CN106825806 B CN 106825806B CN 201710197211 A CN201710197211 A CN 201710197211A CN 106825806 B CN106825806 B CN 106825806B
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Classifications
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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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
-
- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
- B23H7/18—Electric circuits specially adapted therefor, e.g. power supply for maintaining or controlling the desired spacing between electrode and workpiece
-
- 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
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/36—Supply or regeneration of working media
Abstract
The invention discloses a kind of device and method in introduction by magnetic field electrolysis curved hole of electric spark Compound Machining, the present invention belongs to special process field manufacturing technology suitable for the microfabrication of non-magnet material；Guided rings include left and right sides calutron in the device and method, and left and right calutron generates anisotropy field by digital stable power on-load voltage, and guided rings, which are mounted on, to be continued to export magnetic field force to electrode in sliding rail；Tool-electrode generates pivot angle because magnetic field force induced in universal joint, and flexible rubber hose is fed under feeding motor driven vertically with tool-electrode swaying direction, and tool-electrode electrochemical discharge is in this direction ablation workpiece material；Electrolyte is delivered to flexible rubber hose by circulating pump in device, and is reserved micropore by universal joint and flow to electrode, achievees the purpose that chip removal and supplement electrolyte；Computer passes through control card and controls the revolving speed of corner stepper motor and the feed speed of corner and vertical feeding motor by the output voltage control magnetic field strength of adjusting digital stable power in device.
Description
Technical field
The present invention relates to the special process fields in manufacturing technology, refer in particular to a kind of introduction by magnetic field electrolysis electric spark Compound Machining
The device and method in curved hole.
Background technique
High-precision injection molding part demand is continuously increased with improvement of living standard, people with the development of industry, this is just
There is higher requirement to mould and die accuracy in injection mold industry.However accurate temperature control is but at injection molding in cooling procedure
Mould and die accuracy continues the obstacle improved, current study show that the mold with curved hole cooling duct is compared with cooling duct mold is combined,
Have the characteristics that long working life, temperature control is accurate and injection-moulded plastic part is high-quality, but the processing in the curved hole of cooling duct is one
The problem that can't steer clear of.If the processing problems in the curved hole of cooling duct are resolved, precise injection molding industry will welcome new development
Opportunity.
On the other hand, MEMS refers to the sensing technology of micro-structure, actuation technology and Controlled by micro computer Integration ofTechnology in one
Body forms while having the intelligent micro device or system of " sensing~calculating (control)~execution " function.MEMS is logical
Micromation is crossed with integrated to construct microcosmic new structure, new working principle, new function, in micro-nano sensor, micro- execution
Device, Micro-Robot, microreactor technology, microkinetic energy resource system, micro-biochip etc. have application, and these applications must
It must be premised on corresponding processing technology, because MEMS usually needs to produce micropore, two dimension on material or even answers
The micro-structures such as miscellaneous three dimensional type chamber, the channel as circuit between system or fluid.So if unmature curved hole machined work
Skill, the large-scale industrial application of MEMS can only be talked about stratagems on paper.
Due to being limited by spatial constructional dimensions, traditional process tool cannot be introduced into the inside of bent hole, cause curved
The inner surface in hole is difficult to, and is even more to have no way of doing it for finishing and its finishing.It is also very tired even manpower handwork
Difficulty, this is that the machining of bending internal surface of hole brings very big technological challenge.This technical problem of curved hole machined is also got over as a result,
To get over the concern by academia.Since the eighties in last century, just there are experts and scholars to be dedicated to the research of curved hole machined technology,
More is the method using the special process, wherein mostly using spark discharge ablation method greatly.
The processing of spark discharge ablation is to be put respectively using workpiece and tool as two electrodes using two interpolar pulse sparks
The thermal energy that electricity generates, melt, evaporate and dish out piece pole material, achievees the purpose that workpieces processing.Spark discharge loses at present
Mainly have except curved hole method is processed: using the spring in compressive state with different curvature bending elongation driving electrodes processing method,
Make the method for curved guide, using flexible electrical cartridge electrochemical machining method etc. using marmem.Using in compression shape
The spring of state can process curved hole with different curvature bending elongation driving electrodes processing method in the predetermined direction, but exist
The problem of processing efficiency is low and spring random vibration, to influence the roughness and precision in processed hole.Remembered using shape
The principle for recalling the method foundation memorial alloy temperature distortion that alloy makees curved guide can also process curved hole, but electric in process
Cartridge easily unstability, the quality for processing the shape in curved hole, precision and inner surface all cannot be guaranteed.The electrolysis of flexible electrical cartridge adds
Work method makes flexible pipe turn by the recoil strength of the pulling force or electrolyte that change current supply line, adds to control flexible electrical cartridge
Work goes out curved hole, and this square law device is simple, at low cost, process relatively easily controls, but there are still processing gaps to be difficult to control
System, the disadvantage of easily short circuit.
Summary of the invention
The purpose of the present invention is to solve above-mentioned difficulties, propose a kind of introduction by magnetic field electrolysis electric spark Compound Machining
Curved aperture apparatus and method, using steel electrode, the stress in magnetic field is swung the present invention, and flexible rubber hose elastically deformable is with to electrode
Swaying direction feeding, tool-electrode are separated the principle for electrochemical discharge occur to ablation material by the gas-bearing formation that cell reaction generates
Carry out curved hole machined.Guided rings persistently export magnetic field force, coordination electrode pivot angle simultaneously, and electrolyte is constantly delivered to by circulating pump to be added
Work area domain guarantees the sustainability of processing.
To achieve the goals above, the present invention provides a kind of introduction by magnetic field to be electrolysed the curved aperture apparatus of electric spark Compound Machining,
Including electrolysis EDM System, guidance magnetic field control system and electrolyte circulation system；The electrolysis electrical discharge machining system
System includes vertical feeding motor, tool-electrode, universal joint, adjustable pulsed power supply, auxiliary electrode, control card and computer；Institute
Tool-electrode is stated to connect by universal joint with the flexible rubber hose lower end in electrolyte circulation system；The flexible rubber hose and universal joint
Junction offers micropore；The tool-electrode connects adjustable pulsed power supply cathode, the auxiliary electrode connection adjustable pulse electricity
Source anode, the auxiliary electrode are placed in the sink in guidance magnetic field control system；The vertical feeding motor and the control
Card is connected, and the control card is connected with the computer；The guidance magnetic field control system includes guided rings, corner step
Into motor, motor, connecting rod, digital stable power, sliding rail, sink are fed vertically；The guided rings are mounted on sliding rail inner sidewall
And can be slided along sliding rail, guided rings are connected by connecting rod with the corner stepper motor, and guided rings can be by connecting rod with corner
Stepper motor rotation；The sliding rail is mounted on bottom of gullet, and the corner stepper motor is mounted on the vertical feeding motor
And it is connected by the control card with computer；The electrolyte circulation system includes flexible rubber hose, circulating pump, electrolyte；
Electrolyte is delivered in the flexible rubber hose by the circulating pump, and the flexible rubber hose is placed in the surface of guided rings；It is described soft
Property sebific duct in electrolyte flow to machining area through the micropore.
Further, there is workpiece below the flexible rubber hose, workpiece is placed in sink.
Further, the workpiece is non-magnet material, and the tool-electrode is steel tapered electrode, the auxiliary electrode
For graphite electrode, the electrolyte is alkaline solution, and the tool-electrode need to immerse electrolyte, and the flexible rubber hose diameter is 1
~5mm and elastic deformation can occur, the adjustable pulsed power supply voltage 0~60V, 1~5000Hz of frequency, duty ratio 0~
100%.
Further, universal joint envelope tool-electrode taper bottom surface, the tool-electrode can be in the universal joints
Freely swing.
Further, the guided rings include left side calutron and right side calutron；The left side calutron with
Right side calutron radial symmetric and by the digital stable power on-load voltage generate anisotropy field, the digital stable power
Output voltage is controlled by computer.
Further, the computer by the control card control revolving speed and the corner of the corner stepper motor with
And the feed speed of the vertical feeding motor.
Further, the tool-electrode pass through magnetization treatment, conical lower portion and top magnetic on the contrary, taper be 1:2~
1:8, it is magnetic opposite so that the bearing up-down force of tool-electrode is different, to be conducive to the formation in curved hole.
Method based on the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining, comprising the following steps:
Step S1: adjustable pulsed power supply is connected with tool-electrode and auxiliary electrode respectively and on-load voltage, and numerical control is steady
Voltage source is connected with guided rings, controls digital stable power output voltage by computer；
Step S2: there is electrochemical discharge ablation material in tool-electrode, the left side calutron in guided rings and right side electricity
Magnetic device is by generating anisotropy field after the digital stable power on-load voltage, and guided rings are rotated with corner stepper motor, tool
Electrode generates pivot angle due to by directional magnetic field power；
Step S3: feeding motor driven flexible rubber hose is fed with tool-electrode direction vertically under the control of the computer, tool
Electrode is towards swaying direction ablation material；
Step S4: setting up database, different vertical feed speeds is arranged according to the workpiece material difference, according to tool
The different output voltage of the size setting digital stable power of electrode；
Step S5: in electrochemical discharge process, the electrolyte in sink is delivered to flexible glue by the circulating pump
Guan Zhong, electrolyte flow to machining area through micropore.
Further, in the step S2, the guided rings can up and down, circumferentially be slided in sliding rail, protect with tool-electrode
Hold sustained height.
Further, in the step S3, the flexible rubber hose is resiliently flexible to feed to the curved hole direction of workpiece.
Technical proposal that the invention solves the above-mentioned problems is:
1. setting up electrolysis EDM System, after tool-electrode and auxiliary electrode on-load voltage, tool-electrode is generated
Electrochemical discharge, vertical stepper motor are fed down under the control of the computer, are directed toward flexible rubber hose to tool-electrode very close, and
Make tool-electrode in this direction ablation workpiece material.
2. set up guidance magnetic field control system, digital stable power is to after guided rings on-load voltage, left and right sides electromagnetic installing
Generation anisotropy field is set, guided rings go to required angle under corner stepper motor driving, to make tool-electrode directional swing.
3. setting up electrolyte circulation system, electrolyte in sink is constantly delivered to flexible glue by circulating pump in process
Pipe, electrolyte flow to tool-electrode machining area through micropore.
The medicine have the advantages that
1. by electrolysis EDM System, the processing gap between tool-electrode and workpiece does not need accurately to control,
Short circuit phenomenon is avoided, processing stability is improved.
2. guided rings are connected with corner stepper motor and vertical stepper motor can be along cunning in the guidance magnetic field control system
Rail slides up and down, and keeps sustained height with tool-electrode, to persistently export magnetic field force, and guided rings can be with corner stepping electricity
Machine rotation, pivot angle needed for there is tool-electrode increase the flexibility of processing.
3. computer can control corner stepper motor in the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining
Revolving speed and corner, the output voltage of digital stable power and vertical feeding motor feed speed, ensure that processed curved
The machining accuracy in hole.
4. can constantly take away the clast and depleted electrolytes of ablation by electrolyte circulation system, make process can
To continue.
Detailed description of the invention
Fig. 1 is the schematic diagram of the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining；
Fig. 2 is the schematic diagram of tool-electrode and guided rings relative position in device.
Appended drawing reference is as follows:
1. computer, 2. control cards, 3. vertical stepper motors, 4. corner stepper motors, 5. connecting rods, 6. flexible rubber hoses,
7. adjustable pulsed power supply, 8. sliding rails, 9. electrolyte, 10. sinks, 11. auxiliary electrodes, 12. guided rings, 13. digital stable powers,
14. workpiece, 15. circulating pumps, 16. micropores, 17. left side calutrons, 18. magnetic fields, 19. right side calutrons, 20. tools electricity
Pole, 21. universal joints.
Specific embodiment
Embodiment: below with reference to the details of use and working condition of Fig. 1 and Fig. 2 the present invention will be described in detail method and apparatus.
Wherein electrolyte 9 is alkaline solution, and tool-electrode 20 uses steel tapered electrode, and workpiece 14 is non-magnet material,
Auxiliary electrode 11 uses graphite electrode；20 conical top of tool-electrode need to immerse electrolyte 9, and conical lower portion can be in universal joint 21
It is freely rotated, adjustable pulsed power supply 7 0~60V of voltage, 1~5000Hz of frequency, duty ratio 0~100%.
Application method of the present invention is as follows:
Sliding rail 8 is mounted on sink 10, the guided rings 12 that left side calutron 17 and right side calutron 19 are formed
It is mounted on sliding rail 8 and is connected by connecting rod 5 with corner stepper motor 4；Adjustable pulsed power supply 7 is in tool-electrode 20 and auxiliary electricity
On-load voltage between pole 11 constitutes electrolysis spark circuit and generates spark discharge and 14 material of ablation workpiece；It is controlled by computer 1
13 output voltage of digital stable power, left side calutron 17 and right side calutron 19 are by 13 on-load voltage of digital stable power
Anisotropy field 18 is issued afterwards, and the driving guided rings 12 under the control of computer 1 of corner stepper motor 4 go to special angle, magnetic field 18
Also same angle is gone to therewith, and tool-electrode 20 is flapped toward this angle under magnetic field force effect, and flexible rubber hose 6 is in vertical stepping electricity
Machine 3 is fed under driving to 20 swaying direction of tool-electrode, and electrochemical discharge is processed on workpiece 14 in specific direction ablation material
Curved hole out.
Computer 1 is connect with control card 2 and digital stable power 13 respectively, not according to 14 material of workpiece to be machined
Together, the different feed speed of vertical stepper motor 3 is controlled；According to the size Control corner stepper motor 4 in curved hole to be processed
Corner；According to the output voltage of the size Control digital stable power 13 of tool-electrode 20.
Circulating pump 15 is connected with the electrolyte 9 in sink 10 with flexible rubber hose 6, electrolyte 9 is delivered to by circulating pump 15
In flexible rubber hose 6, electrolyte 9 flows to the machining area of tool-electrode 20 by micropore 16, and the effect of micropore 16 is in order to supplement work
Have the electrolyte at electrode 20, is carried out so that processing is lasting.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (10)
1. a kind of introduction by magnetic field is electrolysed the curved aperture apparatus of electric spark Compound Machining, including electrolysis EDM System, guidance magnetic field
Control system and electrolyte circulation system；It is characterized by:
The electrolysis EDM System includes vertical feeding motor (3), tool-electrode (20), universal joint (21), adjustable arteries and veins
Rush power supply (7), auxiliary electrode (11), control card (2) and computer (1)；The tool-electrode (20) passes through universal joint (21)
It is connect with flexible rubber hose (6) lower end in electrolyte circulation system；The flexible rubber hose (6) opens up with universal joint (21) junction
There are micropore (16)；The tool-electrode (20) connects adjustable pulsed power supply (7) cathode, and the auxiliary electrode (11) connects adjustable arteries and veins
Power supply (7) anode is rushed, the auxiliary electrode (11) is placed in the sink (10) in guidance magnetic field control system；The vertical feeding
Motor (3) is connected with the control card (2), and the control card (2) is connected with the computer (1)；
The guidance magnetic field control system includes guided rings (12), corner stepper motor (4), feeds motor (3), connecting rod vertically
(5), digital stable power (13), sliding rail (8), sink (10)；The guided rings (12) are mounted on sliding rail (8) inner sidewall and can
It is slided along sliding rail (8), guided rings (12) are connected by connecting rod (5) with the corner stepper motor (4), and guided rings (12) can lead to
Connecting rod (5) is crossed to rotate with corner stepper motor (4)；The sliding rail (8) is mounted on sink (10) bottom, the corner stepper motor
(4) it is mounted on the vertical feeding motor (3) and is connected by the control card (2) with computer (1)；
The electrolyte circulation system includes flexible rubber hose (6), circulating pump (15), electrolyte (9)；The circulating pump (15) will be electric
Solution liquid (9) is delivered in the flexible rubber hose (6), and the flexible rubber hose (6) is placed in the surface of guided rings (12)；The flexibility
Electrolyte (9) in sebific duct (6) flows to machining area through the micropore (16).
2. introduction by magnetic field according to claim 1 is electrolysed the curved aperture apparatus of electric spark Compound Machining, which is characterized in that described soft
Property sebific duct (6) below be provided with workpiece (14), workpiece (14) is placed in sink (10).
3. introduction by magnetic field according to claim 2 is electrolysed the curved aperture apparatus of electric spark Compound Machining, it is characterised in that: the work
Part (14) is non-magnet material, and the tool-electrode (20) is steel tapered electrode, and the auxiliary electrode (11) is graphite electrode,
The electrolyte (9) is alkaline solution, and the tool-electrode (20) need to immerse electrolyte (9), and flexible rubber hose (6) diameter is
1~5mm and elastic deformation can occur, adjustable pulsed power supply (7) 0~60V of voltage, 1~5000Hz of frequency, duty ratio 0
~100%.
4. introduction by magnetic field according to claim 3 is electrolysed the curved aperture apparatus of electric spark Compound Machining, it is characterised in that: described ten thousand
Xiang Jie (21) envelope tool-electrode (20) taper bottom surface, the tool-electrode (20) can freely put in the universal joint (21)
It is dynamic.
5. introduction by magnetic field according to claim 1 is electrolysed the curved aperture apparatus of electric spark Compound Machining, it is characterised in that: described to draw
Lead ring (12) includes left side calutron (17) and right side calutron (19)；The left side calutron (17) and right side electromagnetism
Device (19) radial symmetric and by the digital stable power (13) on-load voltage generate anisotropy field, the digital stable power
(13) output voltage is controlled by computer (1).
6. introduction by magnetic field according to claim 1 is electrolysed the curved aperture apparatus of electric spark Compound Machining, it is characterised in that: the meter
Calculation machine (1) passes through the revolving speed and corner of the control card (2) control corner stepper motor (4) and the vertical feeding
The feed speed of motor (3).
7. introduction by magnetic field according to claim 3 is electrolysed the curved aperture apparatus of electric spark Compound Machining, it is characterised in that: the work
Have electrode (20) and passes through magnetization treatment, conical lower portion and top magnetic on the contrary, taper is 1:2~1:8.
8. special according to claim 1 to any one of 7 methods based on the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining
Sign is, comprising the following steps:
Step S1: adjustable pulsed power supply (7) is connected with tool-electrode (20) and auxiliary electrode (11) respectively and on-load voltage, will
Digital stable power (13) is connected with guided rings (12), controls digital stable power (13) output voltage by computer (1)；
Step S2: there is electrochemical discharge ablation material, the left side calutron (17) in guided rings (12) in tool-electrode (20)
With right side calutron (19) by generating anisotropy field after the digital stable power (13) on-load voltage, guided rings (12) are with turning
Angle stepper motor (4) rotation, tool-electrode (20) generate pivot angle due to by directional magnetic field power；
Step S3: vertical feeding motor (3) driving flexible rubber hose (6) is directed toward with tool-electrode (20) under computer (1) control
Feeding, tool-electrode (20) is towards swaying direction ablation material；
Step S4: setting up database, different vertical feed speeds is arranged according to workpiece (14) material difference, according to tool-electrode
(20) the different output voltage of size setting digital stable power (13)；
Step S5: in electrochemical discharge process, the electrolyte (9) in sink (10) is delivered to by the circulating pump (15)
In flexible rubber hose (6), electrolyte (9) flow to machining area through micropore (16).
9. the method for the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining according to claim 8, it is characterised in that:
In the step S2, the guided rings (12) can up and down, circumferentially be slided in sliding rail (8), keep same with tool-electrode (20)
Highly.
10. the method for the introduction by magnetic field electrolysis curved aperture apparatus of electric spark Compound Machining according to claim 9, feature exist
In: in the step S3, the flexible rubber hose (6) is resiliently flexible to feed to the curved hole direction of workpiece (14).
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| CN201710197211.2A CN106825806B (en) | 2017-03-29 | 2017-03-29 | A kind of device and method in the introduction by magnetic field electrolysis curved hole of electric spark Compound Machining |
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| CN201710197211.2A CN106825806B (en) | 2017-03-29 | 2017-03-29 | A kind of device and method in the introduction by magnetic field electrolysis curved hole of electric spark Compound Machining |
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| CN108655519B (en) * | 2018-05-21 | 2019-10-01 | 上海交通大学 | Arc discharge processes fliud flushing regional control system |
| CN110026628B (en) * | 2019-04-12 | 2023-05-26 | 广东工业大学 | Electrochemical machining device based on magneto-deformable electrode and electrochemical machining method thereof |
| CN110842307B (en) * | 2019-11-22 | 2020-07-17 | 合肥工业大学 | Electrochemical machining tool for complex inner wall structure with poor accessibility |
| CN113770461B (en) * | 2021-09-24 | 2022-10-11 | 长沙理工大学 | Method and system for machining micro-hole by electrochemical discharge of magnetofluid driving solution |
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| GB749486A (en) * | 1953-12-21 | 1956-05-23 | British Thomson Houston Co Ltd | Improvements in and relating to methods of and means for electro-erosion |
| JP2997500B2 (en) * | 1990-03-30 | 2000-01-11 | 株式会社日立製作所 | Fine deburring method and apparatus |
| JPH07108419A (en) * | 1993-10-08 | 1995-04-25 | Sodick Co Ltd | Electric discharge machining device and electric discharge machining method using this device |
| CN100436018C (en) * | 2005-12-22 | 2008-11-26 | 西安工业学院 | Mixed type linear stepping electrochemical machine tool |
| CN100457346C (en) * | 2006-03-15 | 2009-02-04 | 太原理工大学 | Electric spark composite machining process in magnetic field |
| CN101288917B (en) * | 2008-05-01 | 2011-06-08 | 太原理工大学 | Permanent magnet field electric spark ostiole compound processing method and device |
| CN105033374B (en) * | 2015-08-17 | 2017-09-05 | 江苏大学 | Magnetic force advanceable is electrolysed electric spark combined machining method and device |
| CN106001808B (en) * | 2016-06-17 | 2018-06-26 | 江苏大学 | Magnetoelectricity coordinated type electrochemical machining gap automatic feedback control device and application method |
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