CN202151742U - Electro discharge machining device for deep blind hole - Google Patents
Electro discharge machining device for deep blind hole Download PDFInfo
- Publication number
- CN202151742U CN202151742U CN2011201537792U CN201120153779U CN202151742U CN 202151742 U CN202151742 U CN 202151742U CN 2011201537792 U CN2011201537792 U CN 2011201537792U CN 201120153779 U CN201120153779 U CN 201120153779U CN 202151742 U CN202151742 U CN 202151742U
- Authority
- CN
- China
- Prior art keywords
- blind hole
- self
- plant
- processing unit
- electric spark
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model relates to the technical field of electromachining and discloses an electro discharge machining device for a deep blind hole. The electro discharge machining device comprises an automatic positioner, an electrode and a lengthened connecting rod, wherein the electrode is connected with one end of the automatic positioner; the lengthened connecting rod is connected with the other end of the automatic positioner; in the electro discharge machining device, the automatic positioner is a hollow cylinder; an electric compressing spring is arranged in a hollow cavity; the two ends of the electric compressing spring are respectively contacted with the electrode and the lengthened connecting rod; and the number of the lengthened connecting rod can be increased according to the depth of the hole, so that the deep hole is machined, materials are eliminated, the required shape and size are realized, the surface quality requirement is met, the machining difficulty is simplified, and the qualified rate of finished products is improved.
Description
Technical field
The utility model relates to the EDM Technology field, particularly relates to the dark blind hole processing unit (plant) of a kind of electric spark.
Background technology
At present, at oil and natural gas industry, oil exploration and development field, people are that speed is more and more faster, the degree of depth is more and more darker, quality is increasingly high to the requirement of drilling well, and oil yield efficiency is increasingly high; This is just to employed drilling well, completion equipment, and the various production equipments in down-hole and ground have proposed higher, tighter requirement, and it is mainly reflected in two aspects: (1) part need have the anti-oxidant and charing performance of good high-temperature; Has good corrosion resistance; This type material common characteristic is high strength, high viscosity, high tenacity, high-wearing feature, and its difficulty of processing is very big, and the material to cutter during machining has specific (special) requirements; And it is bigger to wear and tear, and the cost performance of machining is lower; (2) design of part becomes increasingly complex, and its length is more and more longer, and the version of the deep hole of its big aspect ratio, blind hole, stepped hole is more and more, makes mechanical processing difficulty increasing, even can't process that product qualified rate is more and more lower, even scraps.
In the electric machining field, on the technology, when the draw ratio L/D in hole >=10, be referred to as deep hole, deep hole is divided into blind hole (blind hole) and through hole again by its shape.
The design feature and the machining accuracy of this type part are described below:
1, workpiece total length: 2.5～3.5m;
2, aperture, length and aspect ratio:
Macropore: aperture Φ 7.5～10mm, length 1.8～2.5m, aspect ratio 180～333;
Aperture: aperture Φ 4.5～5.5mm, length 0.7～1.0m, aspect ratio 125～225;
3, two hole merging precision (cylindricity) :≤2mm, hole tolerance: ± 0.05mm.
The material of this type part is generally the Incoloy925 nichrome, CrMnN HIGH STRENGTH NON-MAGNETIC STAINLESS STEEL etc.
This type of part machinery adds problem and the difficult point that mostly exists man-hour:
1, for the Incoloy925 nichrome, difficult-to-machine materials such as CrMnN magnetism-free stainless steel have characteristics such as high strength, high viscosity, high tenacity, high-wearing feature; When aspect ratio≤100, can adopt machining, but the cost performance of machining along with the increase meeting of aspect ratio worse and worse; When aspect ratio increases to a certain degree; Because the degree of depth in hole is oversize, the making length of small-diameter cutter is restricted, and makes the hole can only be worked into certain depth; Darker hole even can't process, and machining is taken cutter.
2, when aspect ratio greater than 100 the time, profiled holes particularly like square, petal, triangle etc., can't adopt machining process processing at all.
The utility model content
The technical problem that (one) will solve
The technical problem that the utility model will solve is how to reduce the Incoloy925 nichrome, and difficult-to-machine materials such as CrMnN magnetism-free stainless steel are in the aperture when bigger, and the difficulty of processing when having profiled holes, improves its product qualified rate.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of electric spark dark blind hole processing unit (plant), and it comprises: self-align device, the electrode that links to each other with self-align device one end, and the lengthening extension bar that links to each other with the self-align device other end.
Wherein, said self-align device is a hollow circular cylinder, is provided with the into tight spring of voltage in its hollow cavity, saidly advances the tight both ends of the spring of voltage and contacts with said electrode and lengthening extension bar respectively.
Wherein, saidly advance the tight both ends of the spring of voltage and be respectively arranged with into electrical spring sheet.
Wherein, the cavity inner wall at said self-align device two ends is provided with screw thread, and said electrode is connected with said self-align device through locking nut respectively with the lengthening extension bar.
Wherein, the end that said lengthening extension bar is not connected with self-align device is provided with internal thread, is used to connect additional lengthening extension bar.
Wherein, on the said self-align device outer wall, offer double helix vertically and derive groove.
Wherein, the external diameter of said self-align device is than the big 0.1mm-0.3mm of external diameter of said electrode.
Wherein, the material of said electrode is copper, copper-tungsten or graphite.
Wherein, the material of said self-align device is the abrasion-proof insulating material.
Wherein, the said material that advances the tight spring of voltage is a spring steel, and the said material that advances the electrical spring sheet is a copper.
(3) beneficial effect
The dark blind hole processing unit (plant) of the electric spark that technique scheme provided; Through electrode physical energies such as electric energy, heat energy are applied directly on the workpiece to be machined; Replace existing use universal cutter and come the cutting workpiece material, in process, need not apply tangible mechanical force; And this device can increase the quantity of lengthening extension bar according to the degree of depth in hole, thereby realizes deep hole machining, material removal and reach required geomery and surface quality requirement, simplifies difficulty of processing, improves product qualified rate.
Description of drawings
Fig. 1 is the structural representation of the dark blind hole processing unit (plant) of the electric spark of the utility model embodiment;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is applied in the structural representation on the lathe with the dark blind hole processing unit (plant) of the electric spark of the utility model embodiment.
Wherein, 1: electrode; 2: the electrode locking nut; 3: self-align device; 4: advance the electrical spring sheet; 5: advance the tight spring of voltage; 6: lengthening extension bar locking nut; 7: the lengthening extension bar; 8: lengthening extension bar internal thread; 9: double helix is derived groove; 10: servo principal axis; 11: clamping fixture; 12: additional lengthening extension bar locking nut; 13: workpiece to be machined; 14: fixed pedestal; 15: the pedestal platform.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail.Following examples are used to explain the utility model, but are not used for limiting the scope of the utility model.
Fig. 1 shows the structural representation of the dark blind hole processing unit (plant) of electric spark of the utility model embodiment; It comprises self-align device 3; And the electrode 1 and lengthening extension bar 7 that are connected self-align device 3 two ends, electrode 1 is used for sending electric spark, carries out blind hole processing; Lengthening extension bar 7 is connected with control device, realizes the processing of dark blind hole.
In the present embodiment; Self-align device 3 is a hollow circular cylinder; Be provided with screw thread on the inwall at its hollow cavity two ends, electrode 1 is connected with self-align device 3 one ends through electrode locking nut 2, and lengthening extension bar 7 is connected with self-align device 3 other ends through lengthening extension bar locking nut 6; This two place connects all detachable, makes things convenient for the replacing and the maintenance of related device.In the hollow cavity of self-align device 3, be provided with the into tight spring 5 of voltage; The two ends of advancing the tight spring 5 of voltage contact with electrode 1 and lengthening extension bar 7 respectively; In order to strengthen into tight spring 5 of voltage and electrode 1 and the stability in contact between the extension bar 7 that extends; Weld electrical spring sheet 4 entering the tight spring of voltage 5 two ends, made into that electrical spring sheet 4 contact with lengthening extension bar 7 with electrode 1 respectively, guaranteed the continuity of conducting electricity.
Because need the workpiece of processing deep blind-hole to be generally difficult-to-machine material, so self-align device 3 needs to adopt nonconducting heat resistant and wear resistant insulating materials to satisfy the requirement of long-time spark machined difficult-to-machine material; Electrode 1 is selected copper, copper-tungsten or graphite for use; Advance the preferred spring steel of material of the tight spring 5 of voltage, advance the material preferably copper of electrical spring sheet 4.
In dark blind hole process, can constantly produce the processing etched matter, therefore, on self-align device 3 outer walls, offer double helix vertically and derive groove 9, discharge timely will process etched matter.Can find out to view that from the A-A of Fig. 1 shown in Figure 2 it is symmetrical groove that double helix derivation groove 9 embodies on cutaway view.In addition, because of electrical spark working needs discharge man-hour, so that the external diameter of self-align device 3 is set to is bigger than the external diameter of electrode 1, difference between 0.1mm-0.3mm, thereby discharging gap is provided for spark machined.
Fig. 3 shows the dark blind hole processing unit (plant) of above-mentioned electric spark is applied in the structural representation that carries out dark blind hole processing on the lathe; When workpiece is carried out the dark blind hole of spark machined, have pedestal platform 15 on the lathe, pedestal platform 15 is provided with fixed pedestal 14; Fixed pedestal 14 is connected with servo principal axis 10; Servo principal axis 10 is used to accomplish the degree of depth servo feed of the dark blind hole processing unit (plant) of electric spark, and servo principal axis 10 1 ends are provided with clamping fixture 11, clamping fixture 11 clampings lengthening extension bar 7; Electrode 1 acts on the workpiece to be machined 13; Its degree of depth guiding is slidingly matched by the hole that has processed on self-align device 3 and the workpiece to be machined 13 and leads, and guiding length is about 60mm, to guarantee the linearity in hole.Generally, the servo stroke of servo principal axis 10 is 100-150mm; After the working depth of dark blind hole on the workpiece to be machined 13 surpasses the servo stroke of servo principal axis 10; Adopt lengthening extension bar 7 to prolong servo stroke; Lengthening extension bar locking nut 6 extension bar 7 that will extend is locked on the self-align device 3; Clamping fixture 11 clampings lengthening extension bar 7 has an end of lengthening extension bar internal thread 8, thereby servo stroke is prolonged.When servo principal axis 10 is accomplished the servo stroke of first prolongation; Unclamp clamping fixture 11; Connect additional lengthening extension bar (not indicating among the figure) through lengthening extension bar internal thread 8, and will add the lengthening extension bar and tighten through additional lengthening extension bar locking nut 6, loosening to prevent two joint lengthening extension bars; And then will add the lengthening extension bar and retighten in clamping fixture 11; The processing of the servo stroke of second prolongation of beginning, the rest may be inferred accomplishes the 3rd ... the processing of N servo stroke, until reaching required deep processing.
Can find out that by above embodiment the utility model embodiment utilizes servo principal axis and the self-align device of little stroke to accomplish the ultra degree of depth, the aspect ratio spark machined greater than 100 circular hole, can surpass 2.5m like the workpiece total length; And can process the ultra degree of depth, aspect ratio greater than 100 profiled holes, like square, petal, triangle etc.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and replacement, these improvement and replacement also should be regarded as the protection domain of the utility model.
Claims (10)
1. the dark blind hole processing unit (plant) of electric spark is characterized in that, comprising: self-align device (3), the electrode (1) that links to each other with self-align device (3) one ends, and the lengthening extension bar (7) that links to each other with self-align device (3) other end.
2. the dark blind hole processing unit (plant) of electric spark as claimed in claim 1; It is characterized in that; Said self-align device (3) is a hollow circular cylinder, is provided with the into tight spring of voltage (5) in its hollow cavity, saidly enters the tight spring of voltage (5) two ends and contacts with said electrode (1) and lengthening extension bar (7) respectively.
3. the dark blind hole processing unit (plant) of electric spark as claimed in claim 2 is characterized in that, saidly enters the tight spring of voltage (5) two ends and is respectively arranged with into electrical spring sheet (4).
4. the dark blind hole processing unit (plant) of electric spark as claimed in claim 2 is characterized in that, the cavity inner wall at said self-align device (3) two ends is provided with screw thread, and said electrode (1) is connected with said self-align device (3) through locking nut respectively with lengthening extension bar (7).
5. the dark blind hole processing unit (plant) of electric spark as claimed in claim 1 is characterized in that said lengthening extension bar (7) is not provided with internal thread with the end that self-align device (3) is connected, and is used to connect additional lengthening extension bar.
6. like the dark blind hole processing unit (plant) of each described electric spark among the claim 1-5, it is characterized in that, on said self-align device (3) outer wall, offer double helix vertically and derive groove.
7. the dark blind hole processing unit (plant) of electric spark as claimed in claim 6 is characterized in that, the external diameter of said self-align device (3) is than the big 0.1mm-0.3mm of external diameter of said electrode (1).
8. the dark blind hole processing unit (plant) of electric spark as claimed in claim 7 is characterized in that the material of said electrode (1) is copper, copper-tungsten or graphite.
9. the dark blind hole processing unit (plant) of electric spark as claimed in claim 7 is characterized in that the material of said self-align device (3) is the abrasion-proof insulating material.
10. the dark blind hole processing unit (plant) of electric spark as claimed in claim 3 is characterized in that, the said material that advances the tight spring of voltage (5) is a spring steel, and the said material that advances electrical spring sheet (4) is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201537792U CN202151742U (en) | 2011-05-13 | 2011-05-13 | Electro discharge machining device for deep blind hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201537792U CN202151742U (en) | 2011-05-13 | 2011-05-13 | Electro discharge machining device for deep blind hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202151742U true CN202151742U (en) | 2012-02-29 |
Family
ID=45692251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201537792U Expired - Lifetime CN202151742U (en) | 2011-05-13 | 2011-05-13 | Electro discharge machining device for deep blind hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202151742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773573A (en) * | 2011-05-13 | 2012-11-14 | 北京市电加工研究所 | Electric spark deep blind hole machining device |
-
2011
- 2011-05-13 CN CN2011201537792U patent/CN202151742U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773573A (en) * | 2011-05-13 | 2012-11-14 | 北京市电加工研究所 | Electric spark deep blind hole machining device |
| CN102773573B (en) * | 2011-05-13 | 2014-09-03 | 北京市电加工研究所 | Electric spark deep blind hole machining device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102773573B (en) | Electric spark deep blind hole machining device | |
| CN110842307B (en) | Electrochemical machining tool for complex inner wall structure with poor accessibility | |
| CN104942384A (en) | Rotary main shaft device for micro electric spark machining machine | |
| CN202151742U (en) | Electro discharge machining device for deep blind hole | |
| Kumar et al. | Fabrication of High Aspect Ratio WC-Co Micro Electrodes for µ-EDM Application | |
| CN113770463B (en) | Micro stepped hole machining method based on electrode loss | |
| CN203918033U (en) | A kind of face of cylinder cross-drilled hole processing drill jig | |
| CN203696170U (en) | Built-up jig for machining main body and sleeve of lathe wrench | |
| CN110625207A (en) | Cathode tool and method for removing burrs of internal cross hole through electrolysis | |
| CN216126605U (en) | Double-end milling cutter capable of machining multiple surfaces | |
| Zhu et al. | Effects of different electrode materials on high-speed electrical discharge machining of W9Mo3Cr4V | |
| CN110508884B (en) | Rifling jet flow electrolytic machining tool with large depth-width ratio and narrow groove structure and machining method thereof | |
| CN104827293A (en) | Engraving, milling and drilling all-in-one machine for die | |
| Reza et al. | Effects of polarity parameter on machining of tool steel workpiece using electrical discharge machining | |
| CN207563865U (en) | The wall-thickness screws drilling tool stator inside spin Electrolyzed Processing cathodes such as 200 millimeters of bores | |
| CN210254586U (en) | Pressure spring type conducting block device | |
| CN105364232A (en) | Electric spark deep blind hole processing device | |
| CN207642444U (en) | A kind of compound electrode for processing screw-thread steel roll transverse rib | |
| CN202607019U (en) | Thin-slice electrode for electrical discharge machine | |
| CN111375848A (en) | Electric melting explosion special-shaped deep hole machining electrode | |
| CN112059343A (en) | Cathode tool for machining variable-diameter round hole in conductor material and machining method | |
| CN206199963U (en) | It is a kind of while the wedge angle and valley gutter electrode die of processing cavity part | |
| CN209792813U (en) | Electric feeding device for aluminum processing of fast wire cutting machine | |
| CN218224964U (en) | Hydraulic clamping device of horizontal gear broaching machine | |
| CN110653434B (en) | Special tool for machining sliding groove of reamer shell and machining method of sliding groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120229 Effective date of abandoning: 20140903 |
|
| RGAV | Abandon patent right to avoid regrant |