CN212552139U - Inverted bubble assisted chip removal ultrasonic vibration micro electric spark machining composite system - Google Patents
Inverted bubble assisted chip removal ultrasonic vibration micro electric spark machining composite system Download PDFInfo
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- CN212552139U CN212552139U CN202021278290.3U CN202021278290U CN212552139U CN 212552139 U CN212552139 U CN 212552139U CN 202021278290 U CN202021278290 U CN 202021278290U CN 212552139 U CN212552139 U CN 212552139U
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- 238000003754 machining Methods 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 238000010892 electric spark Methods 0.000 title abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Abstract
The utility model discloses an inverted bubble assisted chip removal ultrasonic vibration micro electric spark machining composite system, wherein a piezoelectric ceramic transducer is arranged at the upper end of a machine tool and is electrically connected with an ultrasonic generator, the lower end of the piezoelectric ceramic transducer is connected with a workpiece clamp, and the workpiece clamp is used for clamping a workpiece; the lower end of the machine tool is provided with a chuck, the chuck is positioned below the workpiece clamp, the chuck is provided with an electrode support sleeve, and the workpiece and the electrode support sleeve are respectively and electrically connected with a pulse power supply. The utility model discloses simple structure guarantees processingquality, and processing flexibility is good.
Description
Technical Field
The utility model belongs to the technical field of, concretely relates to chip removal ultrasonic vibration fine electrosparking combined system is assisted to inversion formula bubble.
Background
In the micro-hole processing technology, the common processing methods are three types: machining, characteristic machining and composite machining. The mechanical processing is easily obstructed by chip removal when a deep hole is drilled due to the small diameter and poor rigidity of the micro-hole drill, so that the processing is interrupted, and more defects exist; the special processing can process micro holes with composite diameter requirements, but the micro holes processed by the special processing have the defects of large roughness, lower precision, limitation by the conductivity of workpiece materials, low processing power and the like, wherein the most prominent defects are that the length-diameter ratio of the micro holes processed by the special processing technology is very limited, and the processing of deep small holes is very limited.
(1) The ultrasound being attached to the workpiece
Ultrasonic vibration is added to electric spark machining in two modes, namely, the ultrasonic vibration is added to a tool electrode; one is to attach to the workpiece. When ultrasonic vibration is added to the tool electrode, the problem that the installation and connection of the tool electrode are difficult due to the fact that a control system needs to be changed greatly is solved, and therefore the structure is complex and difficult to achieve; when ultrasonic vibration is added to a workpiece, the matching of an ultrasonic vibrator system is poor, so that the stability of the ultrasonic vibrator system is poor.
(2) Inverted structure
At present, the methods for electric spark machining of micro-holes mainly include horizontal layout and vertical layout with electrodes on top and work pieces on bottom. The depth-diameter ratio can reach 10 when the electrode is horizontally arranged, and the depth-diameter ratio can only reach about 6 when the electrode is vertically arranged with the workpiece at the upper part and the lower part. This is because when the hole is machined beyond a certain depth, the discharge etch sinks to the bottom of the hole, and when the etch concentration at the bottom reaches a certain value, arcing and short circuits occur, severely degrading the surface quality of the workpiece, e.g., increasing microcracks and white layer thickness. Once the machine tool has developed an arc, the electrode must be retracted, which extends the machining time and causes a change in the diameter of the micro hole. As the depth increases, arcing and short circuits occur more and more frequently, so that machining is forced to stop, causing the depth of machining of the hole to be limited. The depth-diameter ratio of the hole can be increased to a certain extent by using the electric spark ultrasonic composite machining method, but the method does not eliminate the root cause that the etching object sinks to the bottom of the hole, so that the problem cannot be fundamentally solved.
(3) Steam medium assisted processing
The processing medium for conventional electric discharge machining is a liquid, typically kerosene. When processed in kerosene, a large amount of decomposition products, mainly C, are produced2H2、C2H4、CO、CO2And the like, and carbon particles, which can affect the health of the operator and also present a fire hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a tiny electric spark machining combined system of chip removal ultrasonic vibration is assisted to inversion formula bubble, attach ultrasonic vibration to the work piece on, machining efficiency is high, shaping surface quality is good, consequently obtains using in difficult processing material and complicated die cavity field.
The utility model adopts the following technical scheme:
the inverted bubble assisted chip removal ultrasonic vibration micro electric discharge machining composite system comprises a machine tool, wherein a piezoelectric ceramic transducer is arranged at the upper end of the machine tool and is electrically connected with an ultrasonic generator, and a workpiece clamp is connected to the lower end of the piezoelectric ceramic transducer and is used for clamping a workpiece; the lower end of the machine tool is provided with a chuck, the chuck is positioned below the workpiece clamp, the chuck is provided with an electrode support sleeve, and the workpiece and the electrode support sleeve are respectively and electrically connected with a pulse power supply.
Specifically, a sealing device is arranged below the chuck, an air inlet nozzle is arranged at the lower end of the sealing device, and the air inlet nozzle is connected with the electrode support sleeve through an air guide pipe.
Further, the air inlet nozzle is respectively connected with the air pressure adjusting device and the steam generator.
Specifically, the piezoelectric ceramic transducer is connected with the workpiece clamp through an amplitude transformer.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the inverted bubble assisted chip removal ultrasonic vibration micro electric discharge machining composite system attaches the ultrasonic to the workpiece, so that the device is relatively simple and the design cost is low; on the other hand, the workpiece electrode and the tool electrode are inverted, which is beneficial to discharging the erosion-removed material, thereby fundamentally avoiding the deposition of the erosion-removed material at the bottom of the processed hole, increasing the processing depth of the hole, simultaneously reducing the probability of arc discharge and short circuit, accelerating the punching speed and improving the processing efficiency and speed; the steam medium auxiliary processing ensures that the processing quality has little environmental pollution, and the electrode consumption of the processing technology is lower than that of the processing in oil, so the processing flexibility is improved.
Furthermore, the sealing device is arranged to better seal the steam medium, so that the steam medium can play a more full role in subsequent use.
Further, the horn is a critical component in ultrasonic machining, and is configured to amplify the amplitude of the transducer end to tool end vibrations.
To sum up, the utility model discloses simple structure guarantees processingquality, and processing flexibility is good.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a machine tool; 2. a piezoelectric ceramic transducer; 3. an amplitude transformer; 4. a workpiece holder; 5. a workpiece; 6. a tool electrode; 7. an electrode support sleeve; 8. a chuck; 9. connecting blocks; 10. a sealing device; 11. an air inlet nozzle; 12. an air duct; 13. a pulse power supply; 14. an air pressure adjusting device; 15. a steam generator; 16. an ultrasonic generator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it should be noted that when one component is considered to be "connected" to another component, it may be directly connected to the other component or intervening components may exist. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The utility model discloses a tiny electric spark machining combined system of chip removal ultrasonic vibration is assisted to inverted bubble adopts the combined machining method processing micro-hole of ultrasonic vibration and electric spark, and this kind of processing method combines ultrasonic machining efficiency height and the characteristics that electric spark machining is of high quality for work piece machining efficiency and surface quality all are superior to single electric spark machining or ultrasonic machining. The method has the characteristics of high processing efficiency and good forming surface quality, so the method is applied to the fields of difficult-to-process materials and complex cavities.
Referring to fig. 1, the present invention relates to an inverted bubble assisted chip removal ultrasonic vibration micro electric discharge machining composite system, which includes a machine tool 1, a piezoelectric ceramic transducer 2, an amplitude transformer 3, a work holder 4, a tool electrode 6, a chuck 8, a sealing device 10, a pulse power supply 13, an air pressure adjusting device 14, a steam generator 15 and an ultrasonic generator 16.
The piezoelectric ceramic transducer 2 is arranged at the upper end of the machine tool 1 and is connected with a workpiece clamp 4 through an amplitude transformer 3, and a workpiece 5 is arranged on the workpiece clamp 4; the lower end of the workpiece clamp 4 is provided with a chuck 8, the chuck 8 is provided with an electrode support sleeve 7, the workpiece 5 and the electrode support sleeve 7 are respectively and electrically connected with a pulse power supply 13, and an ultrasonic generator 16 is electrically connected with the piezoelectric ceramic transducer 2.
The lower part of the chuck 8 is connected with a sealing device 10 through a connecting block 9, the lower end of the sealing device 10 is provided with an air inlet nozzle 11, the air inlet nozzle 11 is connected with the electrode supporting sleeve 7 through an air duct 12, and an air pressure adjusting device 14 and a steam generator 15 are respectively connected with the sealing device 10.
The utility model discloses the supplementary chip removal ultrasonic vibration fine electrosparking combined system theory of operation of inversion formula bubble does:
the piezoelectric ceramic transducer converts ultrasonic energy into mechanical energy under the action of an ultrasonic generator, the amplitude of the mechanical vibration is amplified under the action of an amplitude transformer, the vibration is transmitted to a clamp and then transmitted to a workpiece electrode, a steam generator on the opposite side generates steam, the steam pressure can be adjusted under the action of an air pressure adjusting device, a pulse power supply generates electric sparks through acting on a tool electrode and is used for corroding and removing part materials, tiny holes are formed through machining, and the rest devices including a sealing device, an electrode support sleeve and the like are auxiliary devices.
The utility model has the advantages of it is following:
(1) the ultrasonic vibration is added to the workpiece, the device is relatively simple, and the design cost is low.
(2) The tool electrode and the workpiece electrode are placed in an inverted mode, namely the workpiece electrode is placed above the tool electrode, the tool electrode is placed below the tool electrode, and therefore the erosion objects are discharged, deposition of the erosion objects at the bottom of a machined hole is fundamentally avoided, machining depth of the hole is increased, meanwhile, the probability of arc discharge and short circuit is reduced, punching speed is increased, machining efficiency and speed are improved, and machining quality is guaranteed.
(3) The machining medium is gas, is called gas machining, is a novel machining method, has small environmental pollution, and compared with the electric spark machining in oil, the electrode consumption of the machining technology is lower than that of the machining in oil, and the machining flexibility is improved. The above-described excellent effects can be achieved by replacing the liquid medium with a gaseous medium.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (4)
1. The inverted bubble assisted chip removal ultrasonic vibration micro electric discharge machining composite system is characterized by comprising a machine tool (1), wherein a piezoelectric ceramic transducer (2) is arranged at the upper end of the machine tool (1), the piezoelectric ceramic transducer (2) is electrically connected with an ultrasonic generator (16), the lower end of the piezoelectric ceramic transducer (2) is connected with a workpiece clamp (4), and the workpiece clamp (4) is used for clamping a workpiece (5); the lower end of the machine tool (1) is provided with a chuck (8), the chuck (8) is positioned below the workpiece clamp (4), the chuck (8) is provided with an electrode support sleeve (7), and the workpiece (5) and the electrode support sleeve (7) are respectively and electrically connected with a pulse power supply (13).
2. The inverted bubble assisted chip removal ultrasonic vibration micro electro discharge machining composite system according to claim 1, wherein a sealing device (10) is arranged below the chuck (8), a gas inlet nozzle (11) is arranged at the lower end of the sealing device (10), and the gas inlet nozzle (11) is connected with the electrode support sleeve (7) through a gas guide pipe (12).
3. The inverted bubble assisted chip removal ultrasonic vibration micro electro discharge machining composite system according to claim 2, wherein the air inlet nozzle (11) is connected with an air pressure adjusting device (14) and a steam generator (15) respectively.
4. The inverted bubble assisted chip removal ultrasonic vibration micro electro discharge machining composite system according to claim 1, wherein the piezoelectric ceramic transducer (2) is connected with the workpiece clamp (4) through an amplitude transformer (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021278290.3U CN212552139U (en) | 2020-07-03 | 2020-07-03 | Inverted bubble assisted chip removal ultrasonic vibration micro electric spark machining composite system |
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| CN202021278290.3U CN212552139U (en) | 2020-07-03 | 2020-07-03 | Inverted bubble assisted chip removal ultrasonic vibration micro electric spark machining composite system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118573A (en) * | 2021-03-09 | 2021-07-16 | 广东工业大学 | Method and device for machining deep and narrow groove by electrolytic milling of tube electrode |
| CN114309840A (en) * | 2022-01-18 | 2022-04-12 | 苏州科技大学 | Ultrasonic vibration assisted electric spark inverted cone micropore machining device and control method thereof |
| CN114473091A (en) * | 2022-03-15 | 2022-05-13 | 江苏理工学院 | Horizontal electrolytic electric spark machining device and method |
| CN114951853A (en) * | 2022-01-11 | 2022-08-30 | 珠海合锐新科技有限公司 | Special-shaped group inclined hole electric spark batch machining device |
| CN116197468A (en) * | 2023-03-06 | 2023-06-02 | 中国石油大学(华东) | Efficient electric spark machining method with green look-up |
-
2020
- 2020-07-03 CN CN202021278290.3U patent/CN212552139U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118573A (en) * | 2021-03-09 | 2021-07-16 | 广东工业大学 | Method and device for machining deep and narrow groove by electrolytic milling of tube electrode |
| CN114951853A (en) * | 2022-01-11 | 2022-08-30 | 珠海合锐新科技有限公司 | Special-shaped group inclined hole electric spark batch machining device |
| CN114951853B (en) * | 2022-01-11 | 2024-05-24 | 珠海合锐新科技有限公司 | Electric spark batch processing device for special-shaped group inclined holes |
| CN114309840A (en) * | 2022-01-18 | 2022-04-12 | 苏州科技大学 | Ultrasonic vibration assisted electric spark inverted cone micropore machining device and control method thereof |
| CN114309840B (en) * | 2022-01-18 | 2023-08-29 | 苏州科技大学 | Ultrasonic vibration assisted electric spark back taper micropore machining device and control method thereof |
| CN114473091A (en) * | 2022-03-15 | 2022-05-13 | 江苏理工学院 | Horizontal electrolytic electric spark machining device and method |
| CN114473091B (en) * | 2022-03-15 | 2023-08-11 | 江苏理工学院 | A horizontal electrolytic electric discharge machining device and method |
| CN116197468A (en) * | 2023-03-06 | 2023-06-02 | 中国石油大学(华东) | Efficient electric spark machining method with green look-up |
| CN116197468B (en) * | 2023-03-06 | 2024-12-17 | 中国石油大学(华东) | Efficient electric spark machining method with green look-up |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 Termination date: 20210703 |
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| CF01 | Termination of patent right due to non-payment of annual fee |