CN109604748A - A kind of electric discharge machining method of outer round surface array micro special-shaped slot - Google Patents
A kind of electric discharge machining method of outer round surface array micro special-shaped slot Download PDFInfo
- Publication number
- CN109604748A CN109604748A CN201910059433.7A CN201910059433A CN109604748A CN 109604748 A CN109604748 A CN 109604748A CN 201910059433 A CN201910059433 A CN 201910059433A CN 109604748 A CN109604748 A CN 109604748A
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- China
- Prior art keywords
- special
- shaped slot
- shaped
- discharge machining
- electrode
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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
- 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
-
- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The present invention relates to a kind of processing methods of aero-engine plunger outer round surface array special-shaped slot, this method is the shape according to special-shaped slot, the requirement of the characteristics of in machined electrode according to electrical fire flower process and discharge capacity is modified shape, the size of electrode wedge angle and re-entrant angle, guarantee that electrical discharge machining can obtain the special-shaped slot for meeting drawing requirement, the processing of each special-shaped slot is sequentially completed using index dial simultaneously, reduces the bring resetting error that is repeatedly loaded.
Description
Technical field
The invention belongs to field of machining, and in particular to a kind of electrical discharge machining of outer round surface array micro special-shaped slot
Method.
Background technique
In the precision component and couple of the industrial circles such as aerospace, ship vehicle, the processing of outer circle special-shaped slot is especially heavy
It wants.The effects of usual special-shaped slot is uniformly distributed in part outer circle, plays and be fastenedly connected, control the flow of gas, fluid.For figure
Paper tolerance is higher, groove shape is irregular and the higher special-shaped slot of slot wedge angle technical requirements, using general processing method, example
Milling Process, grinding such as small cutter, not only difficulty of processing is larger, but also positioning method is complicated, is easy to bring size
Overproof, the problems such as processing consistency is poor.
In edm process, workpiece is difficult wedge angle or re-entrant angle on accurate Replication Tools.When tool is re-entrant angle,
The probability of corresponding sharp corner electric discharge removal is big on workpiece, is subject to corrode and become fillet；When workpiece is wedge angle, due to
The isometry of discharging gap can only process the circular arc using pointed peak as the center of circle, discharging gap for radius on workpiece.Using height
The processing of frequency burst pulse, discharging gap are small to improve precision.
Summary of the invention
The present invention is based on the pulsed discharge principles of the electric spark special process, by part centering and are divided using precision round subsection disk
Degree realizes the processing to the fine array special-shaped slot of part outer round surface.
A kind of electric discharge machining method of outer round surface array micro special-shaped slot, specifically includes the following steps:
Step 1: required workpieces processing is mounted on precision round subsection disk, according to the position quantity n of special-shaped slot by outer circle
Surface perimeter is long to be equally divided into several arc sections, and the angle of precision round subsection disc spins is 360/n degree；
Step 2: according to the ability of the processing of the shape of special-shaped groove, discharging gap and lathe, wedge angle to special-shaped electrode and
Re-entrant angle is modified, and determines the size and shape of special-shaped electrode, and processes the special-shaped electrode of the shape, the special-shaped electrode processing
Size detection is carried out after the completion, if off-dimension, reprocesses the electrode, until size qualification；
Step 3: using the special-shaped electrode to special-shaped slot carry out electrical discharge machining, and to the critical size of special-shaped slot into
Row detection, if off-dimension, reprocesses the critical size of special-shaped slot, until the critical size of first special-shaped slot is qualified；
Step 4: precision round subsection disc spins 360/n degree is repeated step 3, until completing the process.
The special-shaped electrode is processed and formed at one time by bar.
According to the features of shape of special-shaped slot, the shape of electrode wedge angle and re-entrant angle is modified, passes through coordination electrode shape
Size and maximum pd quantity guarantee the shape and size of special-shaped slot, and using high-precision chuck centering and indexing, reduce more
The secondary cutter bring resetting error that is loaded.
Detailed description of the invention
Fig. 1 is wedge angle process principle schematic diagram
Fig. 2 is the schematic diagram that circular arc corrects re-entrant angle principle
Fig. 3 is the schematic diagram that straight line corrects re-entrant angle principle
Fig. 4 is the schematic diagram of part of embodiment of the present invention abnormity groove shape
Fig. 5 is the schematic diagram of part of embodiment of the present invention special-shaped slot special-shaped electrode
Specific embodiment
A specific embodiment of the invention is illustrated with reference to the accompanying drawing.
It is specifically described by taking the processing of aero-engine plunger special-shaped slot as an example.
Circumference is indexed first according to the requirement of part to be processed, which is Model For The Bush-axle Type Parts, on cylindrical surface
Uniformly distributed four special-shaped slots, index dial are rotated by 90 ° the processing for carrying out next special-shaped slot every time；
Special-shaped electrode is made according to the requirement of the size shape of special-shaped slot.Consider that electrical discharge machining can not process wedge angle and recessed
The characteristics of angle, therefore the shape of special-shaped electrode and the shape of processed special-shaped slot are not quite identical.
Electric spark can not process wedge angle in process, therefore reduction radius of corner that can only be unlimited approaches wedge angle, ideal
Under state, radius=spark discharge amount+electrode fillet of fillet.In order to reduce the radius of fillet, electricity should be reduced as far as possible
Polar circle angle, and reduce spark discharge amount.But processing cost and process time Cheng Fei can be made by reducing spark discharge amount
Linearized index is standby to be increased, and according to technical requirements, comprehensively considers spark discharge amount being set to 0.05mm.
For re-entrant angle, if doing the circle that a radius is discharge capacity centered on re-entrant angle, two translated segments junctions are recessed to this
Arcing distance is 0.05 at angle, and electrical discharge machining can get the re-entrant angle of special-shaped slot, but considers vertical plus lathe precision, and processing should
The electrode difficulty of geomery is larger, and is difficult to ensure the size of electrode circular arc in use, therefore circular arc is divided into
Two sections are dissolved into two straightways.Theoretical electrode size can be thus mended out, and in vertical plus machine tooling abnormity electricity
Pole.
Electrical discharge machining is carried out to special-shaped slot using the special-shaped electrode completed the process and dimensional accuracy is met the requirements, and to different
The critical size of shape slot is detected, if off-dimension, reprocesses the critical size of special-shaped slot, then detected, until
The critical size of first special-shaped slot is all qualified；
After first special-shaped slot electrical discharge machining is completed, detection is qualified, index chuck is rotated by 90 °, is carried out next different
The electrical discharge machining of shape slot and detection, until the critical size of four special-shaped slots is qualified.
Compared with prior art, the invention proposes a kind of new electrode shape modification methods, in edm process
In ensure that the form and dimensional precision of special-shaped slot.
Claims (2)
1. a kind of electric discharge machining method of outer round surface array micro special-shaped slot, specifically includes the following steps:
Step 1: required workpieces processing is mounted on precision round subsection disk, according to the quantity n of special-shaped slot and position by outer circle table
Face circumference is equally divided into several arc sections, and the angle of precision round subsection disc spins is 360/n degree；
Step 2: according to the ability of the processing of the shape of special-shaped groove, discharging gap and lathe, to the wedge angle and re-entrant angle of special-shaped electrode
It is modified, determines the size and shape of special-shaped electrode, and process the special-shaped electrode of the shape, the special-shaped electrode completes the process
After carry out size detection, if off-dimension, the electrode is reprocessed, until size qualification；
Step 3: carrying out electrical discharge machining to special-shaped slot using the special-shaped electrode, and the critical size of special-shaped slot is examined
It surveys, if off-dimension, reprocesses the critical size of special-shaped slot, until the critical size of first special-shaped slot is qualified；
Step 4: precision round subsection disc spins 360/n degree is repeated step 3, until completing the process.
2. a kind of electric discharge machining method of outer round surface array micro special-shaped slot according to claim 1, feature exist
In the special-shaped electrode is processed and formed at one time by bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059433.7A CN109604748A (en) | 2019-01-22 | 2019-01-22 | A kind of electric discharge machining method of outer round surface array micro special-shaped slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059433.7A CN109604748A (en) | 2019-01-22 | 2019-01-22 | A kind of electric discharge machining method of outer round surface array micro special-shaped slot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109604748A true CN109604748A (en) | 2019-04-12 |
Family
ID=66018103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910059433.7A Pending CN109604748A (en) | 2019-01-22 | 2019-01-22 | A kind of electric discharge machining method of outer round surface array micro special-shaped slot |
Country Status (1)
| Country | Link |
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| CN (1) | CN109604748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888374A (en) * | 2022-07-13 | 2022-08-12 | 成都宝利根创科电子有限公司 | Workpiece micro small arbitrary arc discharge forming machining electrode and machining method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6228122A (en) * | 1985-07-30 | 1987-02-06 | Mitsubishi Electric Corp | Wire electrode for wire cut electric discharge machine |
| JPH02145216A (en) * | 1988-11-22 | 1990-06-04 | Toshiba Tungaloy Co Ltd | Machining liquid supply device for electricity discharge machine |
| US20060169675A1 (en) * | 2005-01-28 | 2006-08-03 | Samsung Techwin Co., Ltd. | Method and apparatus for electric-discharge machining of a turbine blade |
| CN101767233A (en) * | 2010-01-22 | 2010-07-07 | 南京航空航天大学 | Step and zone type integral impeller electrolytic processing process and device |
| CN104625258A (en) * | 2014-12-24 | 2015-05-20 | 中国航空工业集团公司北京航空精密机械研究所 | Aerial engine plunger oil outlet groove machining method |
-
2019
- 2019-01-22 CN CN201910059433.7A patent/CN109604748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6228122A (en) * | 1985-07-30 | 1987-02-06 | Mitsubishi Electric Corp | Wire electrode for wire cut electric discharge machine |
| JPH02145216A (en) * | 1988-11-22 | 1990-06-04 | Toshiba Tungaloy Co Ltd | Machining liquid supply device for electricity discharge machine |
| US20060169675A1 (en) * | 2005-01-28 | 2006-08-03 | Samsung Techwin Co., Ltd. | Method and apparatus for electric-discharge machining of a turbine blade |
| CN101767233A (en) * | 2010-01-22 | 2010-07-07 | 南京航空航天大学 | Step and zone type integral impeller electrolytic processing process and device |
| CN104625258A (en) * | 2014-12-24 | 2015-05-20 | 中国航空工业集团公司北京航空精密机械研究所 | Aerial engine plunger oil outlet groove machining method |
Non-Patent Citations (1)
| Title |
|---|
| 李更新: "《现代机械制造技术》", 31 August 2009, 天津大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888374A (en) * | 2022-07-13 | 2022-08-12 | 成都宝利根创科电子有限公司 | Workpiece micro small arbitrary arc discharge forming machining electrode and machining method |
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Application publication date: 20190412 |