CN103878452B - The electric discharge machining method of internal cavity - Google Patents
The electric discharge machining method of internal cavity Download PDFInfo
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- CN103878452B CN103878452B CN201410116313.3A CN201410116313A CN103878452B CN 103878452 B CN103878452 B CN 103878452B CN 201410116313 A CN201410116313 A CN 201410116313A CN 103878452 B CN103878452 B CN 103878452B
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- electrode
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- discharge
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Abstract
The present invention relates to the electric discharge machining method of a kind of internal cavity, by designing and manufacturing special electric discharging machining electrode, can extend in cavity, it is achieved be processed in cavity.The present invention compensate for the deficiency that electrical spark working electrode in man-hour is restricted by space and motion mode, it is achieved that the processing to inner chamber difficulty working position, and extends new thinking for spark machined.
Description
Technical field
The processing method that the present invention relates to a kind of internal cavity, the electric discharge machining method of a kind of internal cavity.
Background technology
Existing spark erosion technique principle is by between electrode and workpiece (positive and negative electrode) during pulse feature spark discharge
Galvano-cautery phenomenon carrys out the metal that ablation is unnecessary, reaches part processing request.Spark discharge must be instantaneous pulse feature electric discharge
Can be used for processing, spark machined must use the pulse power.Spark machined is mainly position narrow, deep, sharp on workpiece
Being processed, these positions are difficult to be ensured by machining, and the feature utilizing spark discharge corrosion not stress completes.Electricity fire
The electrode of flower uses red copper, has enough rigidity and electric conductivity, in actual applications, the electrode of spark machined and cutter
Tool is equally rigidity, is restricted by space and movement locus, and the inside specific position for some cavitys is difficult to add
Work.
Summary of the invention
It is an object of the invention to provide the electric discharge machining method of a kind of internal cavity, utilize the principle of spark machined, and
Break through space and the restriction of movement locus, it is achieved the spark machined to the inside specific position of cavity.
The concrete technical scheme of the present invention is: the electric discharge machining method of described internal cavity comprises the following steps:
1) designing and manufacture flexible electrode, described electrode includes discharge portion and several sections of support sections, and discharge portion is positioned at electricity
The end of pole, discharge portion and every section of support section are by flexibly connecting and can make the chamber of electrode energy smooth and easy entrance part to be processed
Body, discharge portion can be directed at position to be processed；Described support section hollow, wire is positioned at hollow space and discharge portion
Couple；The material of discharge portion is graphite or red copper, preferably red copper；The material of support section is nylon or plastics, it is also possible to
It is the surface steel through insulation processing；
2) electric discharging machining electrode is arranged on process equipment, part to be processed is arranged on the workbench of equipment, slowly
Being extend into by electric discharging machining electrode in the cavity needing processing, discharge portion is directed at position to be processed, then strains and fixes and leads
Line, makes electrode become the entirety having sufficient intensity；
3) starting device, treats working position and is processed；
4) final inspection.
The present invention is by equipment and manufactures special electric discharging machining electrode, can extend in cavity, it is achieved in cavity
It is processed；Wire is the most electrically conductive, on the other hand can be by tension, and making electrode become one has the whole of sufficient intensity
Body, ensures reliability and the accuracy of processing；Using red copper material, can increase the intensity of electrode, the material of support section is
, through the steel of insulation processing, i.e. there is certain tensile strength on nylon, plastics or surface, and can effectively insulate, and ensure
The reliability of work and safety.The present invention compensate for the deficiency that electrical spark working electrode in man-hour is restricted by space and motion mode, real
Show the processing to inner chamber difficulty working position, and extend new thinking for spark machined.
Accompanying drawing explanation
Fig. 1 is embodiments of the present invention schematic diagram.
Detailed description of the invention
As it can be seen, the electric discharge machining method of internal cavity comprises the following steps:
1) design flexible electrode, described electrode includes discharge portion 1 and several sections of support sections 2, and discharge portion 1 is positioned at electricity
The end of pole, discharge portion 1 and every section of support section 2 are by flexibly connecting and can make electrode energy smooth and easy entrance part to be processed 3
Cavity, discharge portion 1 can be directed at position 4 to be processed；Described support section 2 hollow, wire 5 is positioned at hollow space
And couple with discharge portion 1；The material of discharge portion 1 is graphite or red copper, preferably red copper；The material of support section 2 is
Nylon or plastics, it is also possible to be the surface steel through insulation processing；
2) electric discharging machining electrode is arranged on process equipment, part 3 to be processed is arranged on the workbench of equipment, slowly
In the slow cavity that electric discharging machining electrode extend into needs processing, discharge portion 1 is directed at position 4 to be processed, then strains also
Fixing wire 5, makes electrode become the entirety having sufficient intensity；
3) starting device, treats working position 4 and is processed；
4) final inspection.
Embodiment 1
, after the machining operation, through inspection, in the oil circuit on casing lid, there is a weldering in the casing lid in certain aero-engine
Tumor, to making oil circuit diameter diminish, the index of this oil circuit can not reach to design requirement, accordingly, it would be desirable to this overlap is removed, its tool
The step of body is:
1) designing and manufacture flexible electrode, described electrode includes discharge portion and 3 sections of support sections, and discharge portion is positioned at electricity
The end of pole, discharge portion and every section of support section, by flexibly connecting and can make the cavity of the electrode smooth and easy entrance casing lid of energy, are put
Electricity part can be directed at overlap；Described support section hollow, wire is positioned at hollow space and couples with discharge portion；Discharge part
The material divided is red copper；The material of support section is nylon；
2) electric discharging machining electrode is arranged on process equipment, casing lid is arranged on the workbench of equipment, slowly by electricity
Spark machined electrode extend in the cavity needing processing, discharge portion alignment overlap, then strains and fixes wire, making electrode
Become the entirety having sufficient intensity；
3) starting device, is processed overlap；
4) final inspection.Result: overlap is completely removed, casing lid oil circuit index meets design requirement.
Claims (1)
1. an electric discharge machining method for internal cavity, is characterized in that, described method comprises the following steps:
1) designing and manufacture flexible electrode, described electrode includes discharge portion (1) and several sections of support sections (2), electric discharge
Partly (1) is positioned at the end of electrode, and discharge portion (1) and every section of support section (2) are by flexibly connecting and can make electrode
The cavity of energy smooth and easy entrance part to be processed (3), discharge portion (1) can be directed at position to be processed (4)；Described support
Partly (2) hollow, wire (5) is positioned at hollow space and couples with discharge portion (1)；The material of discharge portion (1) is
Graphite or red copper, the material of support section (2) is nylon or plastics, it is also possible to be the surface steel through insulation processing；
2) electric discharging machining electrode is arranged on process equipment, part to be processed (3) is arranged on the workbench of equipment
On, slowly electric discharging machining electrode being extend in the cavity needing processing, discharge portion (1) is directed at position to be processed
(4), then strain and fix wire (5), make electrode become the entirety having sufficient intensity；
3) starting device, treats working position (4) and is processed；
4) final inspection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116313.3A CN103878452B (en) | 2014-03-26 | 2014-03-26 | The electric discharge machining method of internal cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410116313.3A CN103878452B (en) | 2014-03-26 | 2014-03-26 | The electric discharge machining method of internal cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103878452A CN103878452A (en) | 2014-06-25 |
| CN103878452B true CN103878452B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410116313.3A Active CN103878452B (en) | 2014-03-26 | 2014-03-26 | The electric discharge machining method of internal cavity |
Country Status (1)
| Country | Link |
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| CN (1) | CN103878452B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816140A (en) * | 2015-04-20 | 2015-08-05 | 中山市利群精密实业有限公司 | Mold cooling device and operation method thereof |
| CN105290553A (en) * | 2015-12-02 | 2016-02-03 | 北京航天新风机械设备有限责任公司 | Cylindrical part inner wall bulge feature back-gouging tool |
| CN108637412B (en) * | 2018-05-17 | 2019-10-25 | 南京航空航天大学 | Towed compliant tool cathode and inner passage electrolytically and mechanically finishing method |
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| CN2069766U (en) * | 1989-01-28 | 1991-01-23 | 山东菏泽油泵油嘴厂 | Mechanical device of copying electric spark machine for cutting needle clack seat surface of oil nozzle |
| EP1547714A2 (en) * | 2003-12-22 | 2005-06-29 | United Technologies Corporation | Hole drilling guide and method |
| CN101222995A (en) * | 2005-07-08 | 2008-07-16 | 三菱电机株式会社 | Electric spark machining device and method thereof |
| CN101817111A (en) * | 2010-03-26 | 2010-09-01 | 徐安阳 | Parts surface modeling and surface roughing method by electric spark at flexible electrode |
| CN102873413A (en) * | 2012-10-03 | 2013-01-16 | 车晋绥 | Gear involute electric spark repairing device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3575087B2 (en) * | 1994-12-07 | 2004-10-06 | 三菱電機株式会社 | Electric discharge machine |
| JP2000042839A (en) * | 1998-07-31 | 2000-02-15 | Mitsubishi Electric Corp | Drawing/extrusion die and surface treatment method for drawing/extrusion die |
| JP2000042838A (en) * | 1998-07-31 | 2000-02-15 | Mitsubishi Electric Corp | Press working die and surface treatment method of press working die |
| JP4316972B2 (en) * | 2003-09-25 | 2009-08-19 | 株式会社ミツトヨ | Probe machining method and electric discharge machine |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069766U (en) * | 1989-01-28 | 1991-01-23 | 山东菏泽油泵油嘴厂 | Mechanical device of copying electric spark machine for cutting needle clack seat surface of oil nozzle |
| EP1547714A2 (en) * | 2003-12-22 | 2005-06-29 | United Technologies Corporation | Hole drilling guide and method |
| CN101222995A (en) * | 2005-07-08 | 2008-07-16 | 三菱电机株式会社 | Electric spark machining device and method thereof |
| CN101817111A (en) * | 2010-03-26 | 2010-09-01 | 徐安阳 | Parts surface modeling and surface roughing method by electric spark at flexible electrode |
| CN102873413A (en) * | 2012-10-03 | 2013-01-16 | 车晋绥 | Gear involute electric spark repairing device |
Non-Patent Citations (2)
| Title |
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| 弯曲孔加工技术及新方法;徐盛林;《现代制造工程》;20061231(第9期);第82-84页 * |
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Also Published As
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|---|---|
| CN103878452A (en) | 2014-06-25 |
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