CN204657681U - A kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part - Google Patents
A kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part Download PDFInfo
- Publication number
- CN204657681U CN204657681U CN201520184721.2U CN201520184721U CN204657681U CN 204657681 U CN204657681 U CN 204657681U CN 201520184721 U CN201520184721 U CN 201520184721U CN 204657681 U CN204657681 U CN 204657681U
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- China
- Prior art keywords
- electrode
- locating
- boundary surface
- positioning fixture
- gate hole
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Abstract
The utility model relates to a kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part.Positioning fixture: be provided with locating support, installing electrodes group top board on locating support, connecting rod is installed in electrode group top board upper end.Be provided with electrode assembling to put, it is that after some single group electrode slices are cascaded by studs, two ends and electrode group top board are fixed that electrode assembling is put, and is located between some single group electrode slices by locating shim.Be provided with positioner, the positioner being arranged on locating support two ends comprises alignment pin, locating platform, movable block and base plate; Locating platform is connected with movable block after passing locating support afterwards by alignment pin successively and base plate is fixed.Be provided with hold down gag, hold down gag one end and base plate are fixed, and the other end compresses locating platform.Machined electrode of the present utility model adopts the form of overall electrode sheet, and its geomery is arranged consistent with piece surface grate opening, can disposablely possessive case gate hole be shaped, machining accuracy and efficiency high.
Description
Technical field
The invention relates to a kind of positioning fixture and processing method of gate hole of drawing squares on Irregular Boundary Surface part, for Set and Positioning and the processing of the stealthy grid part of aircraft surfaces, belongs to special warfare electric spark machining field.
Background technology
Along with improving constantly of aeroplane performance, novel scientific research opportunity of combat brings into use the part product of new material, new technology or new structure, as aluminium alloy material hyperboloid structural Case screen on certain type aircraft, be arranged on the air intake duct exterior panel of aircraft respectively, rear body, fuel system.This flase floor is a large-scale curved thin-wall part, and flase floor surface is covered with the equilateral diamond hole of angled with plate (80 ° or 65.25 °), hole count even nearly 1300.
General on the treatment of surfaces of components during grate opening, adopt the die-cut mode of common die, and this processing mode restricts by factors such as spare part outside measurement, thickness and hole number, and common processing methods machining accuracy is low, the scope of application is narrow more.For certain feature that aircraft Irregular Boundary Surface part grate opening quantity is many, dimension precision requirement is high, common processing methods cannot processing parts, is also difficult to realize high-quality, high efficiency processing by special warfares such as laser, electron beam, electrolysis, millings.
Summary of the invention
The object of the invention is to provide a kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part, and this clamp structure is simple, and easy to process, machining accuracy is high, one-shot forming.
Another object of the invention is to provide a kind of processing method of gate hole of drawing squares on Irregular Boundary Surface part.
The technical scheme that the invention adopts is: a kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part:
Be provided with locating support, installing electrodes group top board on locating support, connecting rod is installed in electrode group top board upper end.
Be provided with electrode assembling to put, described electrode assembling is put and is, after some single group electrode slices are cascaded by studs, two ends and electrode group top board are fixed, and are located between some single group electrode slices by locating shim.Preferably, described list group electrode slice is: the two ends of connecting plate are provided with adjustment hole, some single group electrode slices are cascaded through adjustment hole by studs, and some machined electrodes and connecting plate are fixed, and the profile of machined electrode is identical with the shape of grate opening to be processed.Preferably, the two ends of studs are fixed by being with shoulder nut and locking nut and electrode group top board.
Be provided with positioner, positioner is arranged on the two ends of locating support, and described positioner comprises alignment pin, locating platform, movable block and base plate; Locating platform is connected with movable block after passing locating support afterwards by alignment pin successively and base plate is fixed.Preferably, described locating platform is shaped with positioning reference holes I.Preferably, described movable block is, the two ends of location division are adjusting portion, and integrative-structure is made in adjusting portion and location division, and adjusting portion is provided with U-shaped regulating tank, and location division is provided with positioning reference holes II.
Be provided with hold down gag, hold down gag one end and base plate are fixed, and the other end compresses locating platform.Preferably, described hold down gag is, comprises and compresses stud, clamp nut, fixing briquetting, adjustment stud and adjusting nut; Compress stud to be connected with fixing briquetting and base plate respectively with the two ends of adjustment stud, clamp nut and compression Stud connection, adjusting nut and adjustment Stud connection.
A processing method for gate hole that Irregular Boundary Surface part is drawn squares, method is as follows:
1) respectively process a processing platform at the edge at Irregular Boundary Surface External Shape two ends to be processed, processing platform is shaped with positioning reference holes III;
2) processing platform of Irregular Boundary Surface part is placed between locating platform and movable block, the position of adjustment locating platform and movable block, alignment pin is fixed with vertical with base plate after movable block through locating support, locating platform, processing platform successively;
3) regulate adjusting nut, move up and down machined electrode on adjustment single group electrode slice and part by base plate;
4) regulate clamp nut, make fixing briquetting compress locating platform;
5) connecting rod is connected with lathe, positioning fixture is immersed in working solution together with part, and be connected with the positive and negative electrode of the pulse power respectively, control decrease speed, lathe drives electrode assembling to put decline by connecting rod, by the spark discharge between machined electrode and part, between machined electrode and piece surface, form a small rut, so go round and begin again, overall processing electrode is constantly to part feeding, until penetrate part, form the grate opening of design at piece surface;
Preferably, pulse width is 10-15 μ s, and the pulse spacing is 0.5-1.0 μ s.
Preferably, described working solution is kerosene, mineral oil or saponification liquor.More have choosing, when described working solution is 20 DEG C, viscosity is 2-3.5 × 10
-6m
2/ s, density are 0.75-0.82kg/cm
3, burning-point > 70 DEG C, the kerosene of aromatic hydrocarbon < 0.5%.
6) post processing: after part machines, puts into the after-etching material that dedicated solvent cleans grate opening inner surface by part
Material, avoids part in use to produce grate opening corrosion, affects aircraft Stealth Fighter.
The invention adopts overall multiple-piece machined electrode, and first, according to grid exploded perspective model irregular curved surface grate opening arrangement mode, application digital control wire-electrode cutting equipment, processing is by rows with the electrode slice of appearance and size.Secondly, based on spark machined mode, according to own layout's feature in hole to be processed, by machined electrode, part and frock clamp integrally, and ensure the minimum discharging gap that maintains between machined electrode and flase floor needed for spark machined along with the feed motion of lathe, the shape of machined electrode copies on flase floor the most at last, and time processing can complete the processing of whole Irregular Boundary Surface flase floor surface grate opening.
The advantage of the invention is:
1. the invention, adopts alignment pin and positioning reference holes to be overlapped by the design basis of the technological datum of lathe, machined electrode and frock clamp with part grate opening, reduces and process not coincidence error, ensure part positioning precision.
2. the invention, be by part and machined electrode, frock clamp integrally to the processing method of irregular grate opening, by the feeding of lathe, make the profile of machined electrode copy on part, generation that process is unstressed, after processing, Irregular Boundary Surface is without distortion.
3. the invention, machined electrode adopts the form of overall electrode sheet, and its geomery is based on grid exploded perspective model irregular curved surface gate hole arrangement mode, disposablely possessive case gate hole is shaped, part processing precision and efficiency high.
4. the invention, the cooperation between single group electrode slice is controlled to ensure by locating shim, when in process, arbitrary group of electrode slice goes wrong overall electrode sheet, is easy to adjust immediately and change, and is convenient to later maintenance and cost is low.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the invention.
Fig. 2 is the structural representation that the electrode assembling of the invention is put.
Fig. 3 is the structural representation of the list group electrode slice of the invention.
Fig. 4 is the structural representation of the locating platform of the invention.
Fig. 5 is the structural representation of the movable block of the invention.
Fig. 6 is the structural representation of Irregular Boundary Surface part to be processed.
Fig. 7 is the A portion enlarged drawing of Fig. 6.
Detailed description of the invention
Embodiment 1 one kinds is drawn squares the positioning fixture of gate hole on Irregular Boundary Surface part
As Figure 1-Figure 5, a kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part, is put by locating support (1), electrode group top board (2), connecting rod (3), electrode assembling, positioner and hold down gag forms.
Be provided with locating support (1), the upper installing electrodes group top board (2) of locating support (1), connecting rod (3) is fixed on electrode group top board (2) by trip bolt I (18).
Be provided with electrode assembling to put, described electrode assembling is put and is, after some list group electrode slices (5) are cascaded by studs (4), two ends are fixed with electrode group top board (2) by band shoulder nut (11) and locking nut (12).By locating shim (6) location between some list group electrode slices (5).Described list group electrode slice (5) is: the two ends of connecting plate (5-1) are provided with adjustment hole (5-2), some list group electrode slices (5) are cascaded through adjustment hole (5-2) by studs (4), some machined electrodes (5-3) are fixed with connecting plate (5-1), and the profile of machined electrode (5-3) is identical with the shape of grate opening to be processed.
Be provided with positioner, positioner is arranged on the two ends of locating support (1), and described positioner comprises alignment pin (7), locating platform (8), movable block (9) and base plate (10); Alignment pin (7) is through fixing with base plate (10) after being connected with movable block (9) by locating platform (8) successively after locating support (1).Described locating platform (8) is shaped with positioning reference holes I (8-1).Described movable block (9) is, the two ends of location division (9-2) are adjusting portion (9-1), adjusting portion (9-1) and location division (9-2) make integrative-structure, adjusting portion (9-1) is provided with U-shaped regulating tank (9-3), and location division (9-2) is provided with positioning reference holes II (9-4).Movable block (9) is fixed on base plate (10) by U-shaped regulating tank (9-3) by trip bolt II (19).
Be provided with hold down gag, hold down gag one end and base plate (10) are fixed, and the other end compresses locating platform (8).Described hold down gag is, comprises and compresses stud (13), clamp nut (14), fixing briquetting (15), adjustment stud (16) and adjusting nut (17); Compress stud (13) to be connected with fixing briquetting (15) and base plate (10) respectively with the two ends of adjustment stud (16), clamp nut (14) is connected with compression stud (13), and adjusting nut (17) is connected with adjustment stud (16).
Embodiment 2 one kinds is drawn squares the processing method of gate hole on Irregular Boundary Surface part
Utilize the positioning fixture of embodiment 1, processing method is as follows:
1) as shown in fig. 6-7, a processing platform (21) is respectively processed at the edge at Irregular Boundary Surface part (20) profile two ends to be processed, processing platform (21) is shaped with positioning reference holes III (22), the plane of processing platform (21) is vertical with grate opening to be processed on part (23);
Known from exploded perspective model, grate opening (23) on irregular part surface is all perpendicular to certain plane of grid, cannot to tilt a certain angle because adopting the electrode tip of spark erosion equipment, for ensureing that machined electrode processing direction of feed vertically processes grate opening, a processing platform is gone out in flase floor sharp processing, the plane of processing platform (21) is vertical with the direction of feed of machined electrode, can ensure that machined electrode is vertically drawn squares gate hole.
2) processing platform (21) of Irregular Boundary Surface part (20) is placed between locating platform (8) and movable block (9), the position of adjustment locating platform (8) and movable block (9), makes alignment pin (7) fix with movable block (9) is vertical with base plate (10) afterwards through locating support (1), locating platform (8), processing platform (21) successively;
3) regulate adjusting nut (17), singly organize machined electrode (5-3) on electrode slice (5) and part (20) by the adjustment that moves up and down of base plate (10);
4) regulate clamp nut (14), make fixing briquetting (15) compress locating platform (8);
5) connecting rod (1) is connected with lathe, and (working solution is: when 20 DEG C, and viscosity is 2-3.5 × 10 positioning fixture to be immersed together with part working solution
-6m
2/ s, density are 0.75-0.82kg/cm
3, burning-point > 70 DEG C, the kerosene of aromatic hydrocarbon < 0.5%) in, and be connected with the positive and negative electrode of the pulse power respectively, pulse width is 13 μ s, and the pulse spacing is 1.0 μ s.Lathe drives electrode assembling to put decline by connecting rod (1), by the spark discharge between machined electrode and part, a small rut is formed between machined electrode and piece surface, so go round and begin again, overall processing electrode is constantly to part feeding, until penetrate part, form the grate opening of design at piece surface;
The working sections of any one group of machined electrode on the list group electrode slice manufactured is all consistent with the shape of grate opening to be processed, and quantity and size are determined by piece surface shape.By locating shim (thickness of pad is determined by the distance between hole to be processed) some single group electrode slices are together in series and form an overall electrode sheet form consistent with grate opening arrangement mode.
7) post processing: after part machines, puts into the after-etching material that dedicated solvent cleans grate opening inner surface by part, avoid part in use to produce grate opening corrosion, affect aircraft Stealth Fighter.
The invention is the form of overall electrode sheet by electrode design, adopt alignment pin by part, top board, the datum plane of base plate and machined electrode is unified, and be directly connected with lathe by connecting rod, feed motion along with lathe ensures the minimum discharging gap maintained between machined electrode and flase floor needed for spark machined, by grate opening metal molten or gasification, a small rut is formed on flase floor surface, the high-frequency circulation so gone round and begun again down, electrode is constantly to part feeding, the shape of machined electrode copies on flase floor the most at last, process at one time the processing of whole Irregular Boundary Surface flase floor surface grate opening.
Claims (6)
1. a positioning fixture for gate hole of drawing squares on Irregular Boundary Surface part, is characterized in that:
Be provided with locating support (1), the upper installing electrodes group top board (2) of locating support (1), connecting rod (3) is installed in electrode group top board (2) upper end;
Be provided with electrode assembling to put, described electrode assembling is put and is, after some list group electrode slices (5) are cascaded by studs (4), two ends and electrode group top board (2) are fixed, by locating shim (6) location between some list group electrode slices (5);
Be provided with positioner, positioner is arranged on the two ends of locating support (1), and described positioner comprises alignment pin (7), locating platform (8), movable block (9) and base plate (10); Alignment pin (7) is through fixing with base plate (10) after being connected with movable block (9) by locating platform (8) successively after locating support (1);
Be provided with hold down gag, hold down gag one end and base plate (10) are fixed, and the other end compresses locating platform (8).
2. the positioning fixture of a kind of gate hole of drawing squares on Irregular Boundary Surface part according to claim 1, it is characterized in that: described list group electrode slice (5) is: the two ends of connecting plate (5-1) are provided with adjustment hole (5-2), some list group electrode slices (5) are cascaded through adjustment hole (5-2) by studs (4), some machined electrodes (5-3) are fixed with connecting plate (5-1), and the profile of machined electrode (5-3) is identical with the shape of grate opening to be processed.
3. the positioning fixture of a kind of gate hole of drawing squares on Irregular Boundary Surface part according to claim 1, is characterized in that: the two ends of studs (4) are fixed with electrode group top board (2) by band shoulder nut (11) and locking nut (12).
4. the positioning fixture of a kind of gate hole of drawing squares on Irregular Boundary Surface part according to claim 1, is characterized in that: described locating platform (8) is shaped with positioning reference holes I (8-1).
5. the positioning fixture of a kind of gate hole of drawing squares on Irregular Boundary Surface part according to claim 1, it is characterized in that: described movable block (9) is, the two ends of location division (9-2) are adjusting portion (9-1), adjusting portion (9-1) and location division (9-2) make integrative-structure, adjusting portion (9-1) is provided with U-shaped regulating tank (9-3), and location division (9-2) is provided with positioning reference holes II (9-4).
6. according to the positioning fixture of the arbitrary described a kind of gate hole of drawing squares on Irregular Boundary Surface part of claim 1-5, it is characterized in that: described hold down gag is, comprise and compress stud (13), clamp nut (14), fixing briquetting (15), adjustment stud (16) and adjusting nut (17); Compress stud (13) to be connected with fixing briquetting (15) and base plate (10) respectively with the two ends of adjustment stud (16), clamp nut (14) is connected with compression stud (13), and adjusting nut (17) is connected with adjustment stud (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184721.2U CN204657681U (en) | 2015-03-30 | 2015-03-30 | A kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520184721.2U CN204657681U (en) | 2015-03-30 | 2015-03-30 | A kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204657681U true CN204657681U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520184721.2U Withdrawn - After Issue CN204657681U (en) | 2015-03-30 | 2015-03-30 | A kind of positioning fixture of gate hole of drawing squares on Irregular Boundary Surface part |
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| Country | Link |
|---|---|
| CN (1) | CN204657681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741719A (en) * | 2015-03-30 | 2015-07-01 | 沈阳飞机工业（集团）有限公司 | Positioning fixture for punching grating holes on irregular curved face part and processing method |
| CN105234705A (en) * | 2015-10-28 | 2016-01-13 | 桂林新艺制冷设备有限责任公司 | Clamp used on mechanical device |
-
2015
- 2015-03-30 CN CN201520184721.2U patent/CN204657681U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104741719A (en) * | 2015-03-30 | 2015-07-01 | 沈阳飞机工业（集团）有限公司 | Positioning fixture for punching grating holes on irregular curved face part and processing method |
| CN105234705A (en) * | 2015-10-28 | 2016-01-13 | 桂林新艺制冷设备有限责任公司 | Clamp used on mechanical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150923 Effective date of abandoning: 20170405 |
|
| AV01 | Patent right actively abandoned |