CN102069241B - Machining electrode for annular holes and machining method - Google Patents
Machining electrode for annular holes and machining method Download PDFInfo
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- CN102069241B CN102069241B CN 201010583760 CN201010583760A CN102069241B CN 102069241 B CN102069241 B CN 102069241B CN 201010583760 CN201010583760 CN 201010583760 CN 201010583760 A CN201010583760 A CN 201010583760A CN 102069241 B CN102069241 B CN 102069241B
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- electrode
- looping pit
- connecting rod
- centering
- machining
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Abstract
The invention provides a machining electrode for annular holes and a machining method. The electrode comprises an electrode rod, a connecting rod and an electrode head, wherein one end of the connecting rod is connected with the electrode rod, the electrode head is arranged at the other end of the connecting rod, and the end of the connecting rod, which is connected with the electrode head is of a circular arc; in the machining electrode for the annular holes and the machining method, the electrode head is made of red copper material, the consumption of red copper is reduced, and the material cost is reduced; furthermore, rough machining and fine machining share one electrode rod, so the electrode rod can be reused by replacing the electrode head, the operation is simple, and the non-uniform abrasion of the electrode is reduced; furthermore, the machining of a whole part is completed during one-time clamping, so batching of the part or secondary alignment of the electrode is avoided, the alignment time is reduced and the uniformity of the fine machining allowance is ensured.
Description
Technical field
The invention belongs to the field of machining of aviation part, particularly a kind of machined electrode of looping pit and processing method.
Background technology
At present, comparatively rare in Machine Design although the difficulty of processing of looping pit is relatively high, because its design can be simplified design of part, realize light-weight design, therefore certain range of application is still arranged in aviation part.
Generally, housing part is to adopt cast blank, mostly looping pit on it is that employing pre-buried core rod in mould obtains, but the manufacturing cycle of mould is longer, can not adapt to the fast needs of response of market, and in Single unit job lot production high cost, for addressing these problems, the housing part blank shape can adopt the method for machining to obtain, and the processing of looping pit just becomes difficult point.Present looping pit generally adopts spark machined, and time processing is to final size, and electrode design is monoblock type, and the problem that exists like this is:
1) the electrode profile is difficult for processing, and precision does not reach, and the electrode error is large, is difficult for processing qualified parts;
2) electrode front end serious wear is processed one or two rear electrode and substantially can not be used again, and the almost not wearing and tearing of electrode second half section, the high cost of electrode;
3) along with wear to electrodes, the looping pit oral area of processing is larger than afterbody, can't guarantee the curved surface degree.
Summary of the invention
Large in order to solve the looping pit difficulty of processing that exists in prior art, the problem of the not high and wear to electrodes of machining accuracy the invention provides a kind of machined electrode and processing method of looping pit.
Technical scheme of the present invention is: the present invention is a kind of machined electrode of looping pit, its special character is: this electrode comprises electrode stem, connecting rod and electrode tip, one end of described connecting rod is connected with electrode stem, described electrode tip is arranged on the other end of connecting rod, and the end that described connecting rod is connected with electrode tip is set to circular arc.
Above-mentioned connecting rod arranges on the termination of electrode tip and is provided with cylindrical processing ligament.
The end of above-mentioned electrode tip is spherical shape;
Above-mentioned electrode stem adopts interference to be connected with connecting rod; Described electrode tip and connecting rod are threaded connection.
Above-mentioned electrode tip adopts the red copper material.
The present invention also provides a kind of looping pit processing method of utilizing above-mentioned machined electrode, and its special character is: the method realizes by following steps:
1) fixture is arranged on the spark-erosion machine tool workbench and centering.
2) X in lathe coordinate system, the Y-direction position by centering plug centering clamp locating pin, be arranged on spindle head of lathe annular electrode and the assurance level, the Z-direction position of centering electrode in lathe coordinate system, the angular position of centering electrode also arranges 0 degree for the angle benchmark.
3) part to be processed is arranged on fixture, traveling electrode accesses to the center of looping pit the nc program that weaves, and the selection peak point current is 10～12A; Rotate looping pit roughing by program control machine tool C axle;
4) after roughing is completed, take off the roughing electrode tip, then the fine finishining electrode tip is arranged on the connecting rod of electrode, choosing peak point current is 6～8A; Rotate looping pit fine finishining by program control machine tool C axle.
Above-mentioned steps 3) the looping pit little 0.5～0.7mm in aperture the looping pit aperture ratio step 4 in after roughing) after fine finishining.
The machined electrode of looping pit involved in the present invention and processing method, electrode tip is to adopt the red copper material to make, reduced the red copper consumption, reduced material cost, and roughing and fine finishining are to share an electrode stem, can reuse electrode stem by changing electrode tip, simple to operate, reduce the electrode uneven wear; And complete the processing of whole part in clamped one time, avoided the secondary centering of part batching or electrode, reduced the centering time, guarantee the uniformity of allowance for finish.
Description of drawings
Fig. 1 is looping pit structural representation of the present invention;
Fig. 2 is electrode stem structural representation of the present invention;
Fig. 3 is electrode tip structural representation of the present invention.
In figure: 1-electrode tip, 2-connecting rod, 3-electrode stem, 4-looping pit.
The specific embodiment
Referring to Fig. 1,2 and Fig. 3, the machined electrode of looping pit involved in the present invention comprises electrode tip 1, connecting rod 2 and electrode stem 3, and wherein an end of connecting rod 2 is connected or is threaded connection with electrode stem 3 interference, and the other end is connected with electrode tip 1 by screw thread.Connecting rod 2 is that the end that connecting rod 2 is connected with electrode tip 1 is set to circular arc for the circular arc bar with the cylindrical rod handing-over, be column structure and be used for a fixing end, the end of electrode tip 1 is spherical shape, the termination that electrode tip is connected with connecting rod is provided with the wide columniform processing ligament of 0.1～0.2mm, can reduce the wearing and tearing of electrode tip 1, guarantee service life and the looping pit 4 inner surface crudies of electrode; The material of electrode tip 1 preferably red copper material is made, and remainder uses general structural steel.
Electrode tip divides roughing electrode tip and fine finishining electrode tip, and the radial dimension of roughing electrode tip is than the little 0.5～0.7mm of accurately machined electrode tip.
Utilize above-mentioned electrode to carry out the processing method of looping pit, implementation step is:
1) fixture is arranged on the spark-erosion machine tool workbench, beating with dial gauge centering fixture centering band is not more than 0.03mm.
2) the centering plug is installed on spindle head of lathe, the X by centering plug centering clamp locating pin in lathe coordinate system, Y-direction position; Annular electrode is arranged on spindle head of lathe and the centering level, and on the lower end that utilizes the roughing electrode tip and fixture, the installed surface of part contacts or noncontact, then deducts the radius of roughing electrode tip, draws the Z-direction position of electrode tip center in lathe coordinate system.The angular position of centering electrode also arranges 0 degree for the angle benchmark.
This coordinate system is four, comprise in general three-dimensional system of coordinate X, Y, Z axis and take its origin of coordinates as the center of circle C axle in 360 ° of rotations of XY face.
3) part to be processed is arranged on fixture, traveling electrode accesses to the center of looping pit the nc program that weaves, and the selection peak point current is 10～12A; Rotate looping pit roughing by program control machine tool C axle.
4) after roughing is completed, take off the roughing electrode tip, then the fine finishining electrode tip is arranged on the connecting rod of electrode, choosing peak point current is 6～8A; Rotate looping pit fine finishining by program control machine tool C axle.When fine finishining, the electrode body part is constant, and electrode position is also constant, only changes electrode tip and gets final product.
Above-mentioned steps 2) in, if the Element Design benchmark can't the positioning and clamping part, the positioning datum of part does not overlap with design basis, in order to reduce positioning and clamping errors, but the design basis on single-piece centering part.
Above-mentioned steps 3) the looping pit little 0.5～0.7mm in aperture the looping pit aperture ratio step 4 in after roughing) after fine finishining.
The diameter of the centering plug above-mentioned steps 2) is in 8 ± 2mm scope.
Utilize the machinable looping pit of said method between 0 °～170 ° scopes.
Claims (2)
1. processing method of utilizing machined electrode to carry out looping pit, described electrode comprises electrode stem, connecting rod and electrode tip, described connecting rod is connected with electrode stem, and described electrode tip is arranged on the other end of connecting rod, and the end that described connecting rod is connected with electrode tip is set to circular arc; It is characterized in that: said method comprising the steps of:
1) fixture is arranged on the spark-erosion machine tool workbench and centering;
2) X in lathe coordinate system, the Y-direction position by centering plug centering clamp locating pin, be arranged on spindle head of lathe annular electrode and the assurance level, the Z-direction position of centering electrode in lathe coordinate system, the angular position of centering electrode also arranges 0 degree for the angle benchmark;
3) part to be processed is arranged on fixture, traveling electrode accesses to the center of looping pit the nc program that weaves, and the selection peak point current is 10～12A; Rotate looping pit roughing by program control machine tool C axle;
4) after roughing is completed, take off the roughing electrode tip, then the fine finishining electrode tip is arranged on the connecting rod of electrode, choosing peak point current is 6～8A; Rotate looping pit fine finishining by program control machine tool C axle.
2. the processing method of looping pit according to claim 1, is characterized in that: the looping pit little 0.5～0.7mm in aperture in the looping pit aperture ratio step 4) in described step 3) after roughing after fine finishining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010583760 CN102069241B (en) | 2010-12-10 | 2010-12-10 | Machining electrode for annular holes and machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010583760 CN102069241B (en) | 2010-12-10 | 2010-12-10 | Machining electrode for annular holes and machining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102069241A CN102069241A (en) | 2011-05-25 |
| CN102069241B true CN102069241B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010583760 Expired - Fee Related CN102069241B (en) | 2010-12-10 | 2010-12-10 | Machining electrode for annular holes and machining method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171147B (en) * | 2015-08-19 | 2017-06-16 | 安徽理工大学 | A kind of device for processing gerotor type electrode and gerotor type aperture |
| 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 |
| WO2018035800A1 (en) * | 2016-08-25 | 2018-03-01 | 镱钛科技股份有限公司 | Multi-point multi-angle electrochemical machining apparatus and electrochemical machining method therefor |
| CN110948068B (en) * | 2018-09-27 | 2021-11-09 | 联合汽车电子有限公司 | Fuel distributing pipe and processing method of connecting hole thereof |
| CN109365930B (en) * | 2018-11-20 | 2020-04-17 | 广东轻工职业技术学院 | Electric spark machining device and method for spatial spiral hole |
| CN112404616B (en) * | 2020-11-13 | 2021-12-07 | 合肥工业大学 | Device and method for processing complex cavity by electric spark forming |
| CN112548246B (en) * | 2020-11-26 | 2021-12-28 | 湖北中油科昊机械制造有限公司 | Electrolytic machining device and process for inner hole of elbow |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001205523A (en) * | 2000-01-25 | 2001-07-31 | Mitsubishi Electric Corp | Curved hole machining device and curved hole machining method |
| CN1695862A (en) * | 2004-12-16 | 2005-11-16 | 江汉大学 | Method for carrying out trepanning through electric spark based on wire frame type electrode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3541618B2 (en) * | 1997-05-19 | 2004-07-14 | トヨタ自動車株式会社 | Bending hole processing method and apparatus by electric discharge machining |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001205523A (en) * | 2000-01-25 | 2001-07-31 | Mitsubishi Electric Corp | Curved hole machining device and curved hole machining method |
| CN1695862A (en) * | 2004-12-16 | 2005-11-16 | 江汉大学 | Method for carrying out trepanning through electric spark based on wire frame type electrode |
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| CN102069241A (en) | 2011-05-25 |
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