CN103878452A - Electric discharge machining method of inner cavity - Google Patents
Electric discharge machining method of inner cavity Download PDFInfo
- Publication number
- CN103878452A CN103878452A CN201410116313.3A CN201410116313A CN103878452A CN 103878452 A CN103878452 A CN 103878452A CN 201410116313 A CN201410116313 A CN 201410116313A CN 103878452 A CN103878452 A CN 103878452A
- Authority
- CN
- China
- Prior art keywords
- electrode
- discharge portion
- cavity
- processed
- electric discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to an electric discharge machining method of an inner cavity. A special electric discharge machining electrode is designed and manufactured, can extend into the cavity and machines the inside of the cavity. The electric discharge machining method of the inner cavity overcomes the defects that the electrode is limited by the space and the motion mode in the electric discharge machining process, can machine the positions, difficult to machine, of the cavity, and expands a new thinking way of electric discharge machining.
Description
Technical field
The present invention relates to a kind of processing method of internal cavity, especially a kind of electric discharge machining method of internal cavity.
Background technology
Existing spark erosion technique principle is to carry out the unnecessary metal of ablation by galvano-cautery phenomenon when pulse feature spark discharge between electrode and workpiece (positive and negative electrode), reaches part processing request.Spark discharge must be that instantaneous pulse feature electric discharge could be used for processing, and spark machined must adopt the pulse power.Spark machined is mainly that position narrow, dark, sharp on workpiece is processed, and these positions are difficult to ensure by machining, utilize spark discharge to corrode the feature not stressing and complete.The electrode of electric spark adopts red copper, have enough rigidity and electric conductivity, in actual applications, the electrode that spark machined is used is the same with cutter is rigidity, be subject to the restriction of space and movement locus, be difficult to realize processing for the inside specific position of some cavitys.
Summary of the invention
The object of this invention is to provide a kind of electric discharge machining method of internal cavity, utilize the principle of spark machined, and break through the restriction of space and movement locus, realize the spark machined of the inside specific position to cavity.
Concrete technical scheme of the present invention is: the electric discharge machining method of described internal cavity comprises the following steps:
1) design and manufacture flexible electrode, described electrode comprises discharge portion and several sections of support sections, discharge portion is positioned at the end of electrode, discharge portion and every section of support section are by flexibly connecting and can make the smooth and easy cavity that enters part to be processed of electrode energy, and discharge portion can be aimed at position to be processed; Described support section hollow, wire is positioned at hollow space and connects with discharge portion; The material of discharge portion is graphite or red copper, is preferably red copper; The material of support section is nylon or plastics, can be also the steel of surface 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 electric discharging machining electrode is extend in the cavity that needs processing, discharge portion is aimed at position to be processed, then tension fixing cord, make electrode become an entirety that has sufficient intensity;
3) starting device, treats working position and processes;
4) final inspection.
The present invention is by equipment and manufacture special electric discharging machining electrode, can extend in cavity, realizes processing in cavity; Wire can conduct electricity on the one hand, can, by tension, make electrode become an entirety that has sufficient intensity on the other hand, ensures reliability and the accuracy of processing; Adopt red copper material, can increase the intensity of electrode, the material of support section is the steel of nylon, plastics or surface process insulation processing, has certain tensile strength, and can effectively insulate, the reliability of safeguard work and security.The present invention has made up electrical spark working electrode in man-hour and has been subject to the deficiency of space and motion mode restriction, has realized the processing to the difficult working position of inner chamber, and has expanded new thinking for spark machined.
Brief description of the drawings
Fig. 1 is embodiments of the present invention schematic diagram.
Detailed description of the invention
As shown in the figure, the electric discharge machining method of internal cavity comprises the following steps:
1) design flexible electrode, described electrode comprises discharge portion 1 and several sections of support sections 2, discharge portion 1 is positioned at the end of electrode, discharge portion 1 is with every section of support section 2 by flexibly connecting and can make the smooth and easy cavity that enters part 3 to be processed of electrode energy, and discharge portion 1 can be aimed at position 4 to be processed; Described support section 2 hollows, wire 5 is positioned at hollow space and connects with discharge portion 1; The material of discharge portion 1 is graphite or red copper, is preferably red copper; The material of support section 2 is nylon or plastics, can be also the steel of surface 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 electric discharging machining electrode is extend in the cavity that needs processing, discharge portion 1 is aimed at position 4 to be processed, then tension fixing cord 5, make electrode become an entirety that has sufficient intensity;
3) starting device, treats working position 4 and processes;
4) final inspection.
, after machining, through inspection, there is an overlap at casing in the casing lid in certain aero-engine, to oil circuit diameter is diminished, the index of this oil circuit can not reach designing requirement in the oil circuit covering, therefore, need to remove this overlap, and its concrete step is:
1) design and manufacture flexible electrode, described electrode comprises discharge portion and 3 sections of support sections, discharge portion is positioned at the end of electrode, and discharge portion and every section of support section are by flexibly connecting and can make the smooth and easy cavity that enters casing lid of electrode energy, and discharge portion can be aimed at overlap; Described support section hollow, wire is positioned at hollow space and connects with discharge portion; The material of discharge portion 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 electric discharging machining electrode is extend in the cavity that needs processing, discharge portion is aimed at overlap, then tension fixing cord, make electrode become an entirety that has sufficient intensity;
3) starting device, processes overlap;
4) final inspection.Result: overlap is completely removed, casing lid oil circuit index meets designing requirement.
Claims (1)
1. an electric discharge machining method for internal cavity, is characterized in that, described method comprises the following steps:
1) design and manufacture flexible electrode, described electrode comprises discharge portion (1) and several sections of support sections (2), discharge portion (1) is positioned at the end of electrode, discharge portion (1) is with every section of support section (2) by flexibly connecting and can make the smooth and easy cavity that enters part to be processed (3) of electrode energy, and discharge portion (1) can be aimed at position to be processed (4); Described support section (2) hollow, wire (5) is positioned at hollow space and connects with discharge portion (1); The material of discharge portion (1) is graphite or red copper, is preferably red copper; The material of support section (2) is nylon or plastics, can be also the steel of surface 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, slowly electric discharging machining electrode is extend in the cavity that needs processing, discharge portion (1) is aimed at position to be processed (4), then tension fixing cord (5), make electrode become an entirety that has sufficient intensity;
3) starting device, treats working position (4) and processes;
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 true CN103878452A (en) | 2014-06-25 |
| CN103878452B CN103878452B (en) | 2016-08-17 |
Family
ID=50947759
Family Applications (1)
| 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 |
|---|---|
| CN (1) | CN103878452B (en) |
Cited By (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 |
| CN108637412A (en) * | 2018-05-17 | 2018-10-12 | 南京航空航天大学 | Towed compliant tool cathode and inner passage electrolytically and mechanically finishing method |
Citations (9)
| 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 |
| JPH08155737A (en) * | 1994-12-07 | 1996-06-18 | Mitsubishi Electric Corp | Electric discharge machining device |
| 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 |
| JP2005096033A (en) * | 2003-09-25 | 2005-04-14 | Mitsutoyo Corp | Probe machining method, probe, measuring machine, and electric discharge machine |
| 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 |
-
2014
- 2014-03-26 CN CN201410116313.3A patent/CN103878452B/en active Active
Patent Citations (9)
| 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 |
| JPH08155737A (en) * | 1994-12-07 | 1996-06-18 | Mitsubishi Electric Corp | Electric discharge machining device |
| 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 |
| JP2005096033A (en) * | 2003-09-25 | 2005-04-14 | Mitsutoyo Corp | Probe machining method, probe, measuring machine, and electric discharge machine |
| 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 |
|---|
| 徐盛林: "弯曲孔加工技术及新方法", 《现代制造工程》 * |
| 白杰茹: "柔性电极快速去毛刺", 《机械工人.冷加工》 * |
Cited By (4)
| 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 |
| CN108637412A (en) * | 2018-05-17 | 2018-10-12 | 南京航空航天大学 | Towed compliant tool cathode and inner passage electrolytically and mechanically finishing method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103878452B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103878452A (en) | Electric discharge machining method of inner cavity | |
| JP6435330B2 (en) | Metal forming equipment | |
| EP2631029A3 (en) | Wire electrical discharge machine and wire electrical discharge method for reducing machining damage during cutting machining and escape machining | |
| CN105150030A (en) | Self-adaption intelligent system for monitoring abnormal conditions of turning tool and method thereof | |
| CN104400063A (en) | Handheld type ultrasonic electric drill | |
| CN203357151U (en) | Tool setting gauge of machine tool | |
| CN103231134B (en) | A kind of electrolysis electric spark sutting machining device of non-conducting material and method | |
| CN203871278U (en) | Breaker plum blossom contact finger spring mounting tool | |
| EP2871016A3 (en) | Wire-cut electrical discharge machining machine and method of machining therein | |
| CN109648248B (en) | Method for taking heat transfer tube of steam generator | |
| CN203536870U (en) | Wire-stripping machine | |
| CN204247737U (en) | A kind of peeling apparatus | |
| CN203085266U (en) | Oil-submerged pump cable | |
| CN104475888B (en) | A kind of attachment means of three-shaft linkage cattle-head numerically controlled discharge machine main shaft | |
| CN204116534U (en) | There is the transformer partial discharge on-Line Monitor Device of getting functional oil | |
| CN109434226B (en) | Inner cutting pipe equipment for heat transfer pipe of steam generator | |
| CN207521783U (en) | High-frequency vibration hilt device | |
| CN206898515U (en) | A kind of electric spark three-dimensional tunnel hole processing device | |
| CN205271070U (en) | Accurate aperture electricity processingequipment | |
| CN104842122A (en) | Conducting rod forge forming process | |
| CN203870053U (en) | Power-on detection device for wire rod longitudinal defects | |
| CN203921891U (en) | A kind of spiral automatic feeding device | |
| CN103991686A (en) | Spiral type automatic feeding device | |
| CN205237265U (en) | Electric spark BTA electrode | |
| RU151763U1 (en) | ROTOR OF FAST ASYNCHRONOUS MOTOR |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |