CN103659205A - Minitype filter screen component preparing method for aircraft engine oil way system - Google Patents
Minitype filter screen component preparing method for aircraft engine oil way system Download PDFInfo
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- CN103659205A CN103659205A CN201310683908.2A CN201310683908A CN103659205A CN 103659205 A CN103659205 A CN 103659205A CN 201310683908 A CN201310683908 A CN 201310683908A CN 103659205 A CN103659205 A CN 103659205A
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- filter disc
- tubbiness
- moulding
- engine oil
- aircraft engine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/16—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass plates with holes of very small diameter, e.g. for spinning or burner nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/01—Aircraft parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides a minitype filter screen component preparing method for an aircraft engine oil way system. A stretching forming-laser hole punching-vacuum brazing technology is used, the labor intensity of an operator can be lowered, the consistency of products is improved, during a testing or using process, a flow control test is carried out, if an inner-outer pressure difference value of the filtering screen component is too large or small, the pressure difference value can be amended with a laser fusion hole sealing or hole punching method by increasing or decreasing the number of holes, repairability is achieved, and finished product pass rate is improved.
Description
Technical field
The invention belongs to filter screen preparation method technical field, be specifically related to a kind of miniature filter screen assembly preparation method for aircraft engine oil piping system.
Background technology
Certain type flow controller, for aircraft engine oil piping system, mainly contains two miniature filter screen assemblies in its formation, before and after minute, installs, and mainly plays the effect of controlling flow, and the external and internal pressure that be able to bear 3～4Kg is poor, has the effect of impurity screening concurrently simultaneously.This net-filter assembly is formed by filter disc and frame welding, and volume is small, complex structure, and the thickness of filter disc only has 0.1mm, mesh minimum diameter 0.2mm, minimum aperture spacing 0.1mm, minimum diameter 1.5mm, minimum outer diameter 3.2mm, manufacturing process difficulty is very big.The current external manufacturing process that adopts " manual drill jig punching-drawing and forming-welding ", there is following shortcoming in this kind of method: the one, manual drill jig punching labour intensity is large, and mesh diameter, pitch of holes are difficult for assurance, and homogeneity of product is poor; The 2nd, first to punch and form after intensive mesh, intensity reduces greatly, at drawing and forming, forms in wrinkle process, is easy to cause cracking, and learies is very large; The 3rd, at drawing and forming, form in wrinkle process, along with deformation, the hole of material also deforms, what have even blocks, and has reduced effective filtration area; The 4th, first to punch, after-drawing moulding process easily causes stress to concentrate, service life and reliability reduce; The 5th, after first punching, the quantity in hole is fixed, during drawing and forming the distortion in hole uncontrollable, external and internal pressure is poor not to be reached while requiring, and cannot reprocess, and only scraps, product qualified rate is extremely low.Above-mentioned defect, is to prepare the bottleneck that cannot overcome in miniature filter screen component process, is therefore necessary to improve.
Summary of the invention
The technical problem that the present invention solves: a kind of miniature filter screen assembly preparation method for aircraft engine oil piping system is provided, adopt " drawing and forming-laser boring-vacuum brazing " technique, can alleviate operator's labour intensity, improve homogeneity of product, possess economy and reworkable property, easily realize the use function of product, improve product reliability.
The technical solution used in the present invention: the miniature filter screen assembly preparation method for aircraft engine oil piping system, comprises the steps:
1) drawing and forming: get the disk that filter disc raw material strike out certain diameter, with particular manufacturing craft, disk is drawn into again to the tubbiness of certain diameter and height, end face with the flat tubbiness filter disc of lathe openend, and deburring, then change another set of particular manufacturing craft from tubbiness filter disc openend along the stretched a plurality of wrinkle formation moulding filter discs of its axis;
2) laser boring: tubbiness moulding filter disc is loaded onto after special fixture is got a plurality of apertures with laser on the hemisphere face of its sealing end and taken off, then moulding filter disc is loaded onto to the fixture with calibration function, also get same aperture on the periphery of moulding filter disc;
3) vacuum brazing: the ag-cu solder sheet that is 0.2mm by thickness strikes out the circular ring plate that internal-and external diameter is slightly smaller than skeleton; With gasoline or ethanol, skeleton, moulding filter disc and circular ring plate are cleaned up again; Skeleton, circular ring plate, moulding filter disc are contained on graphite fixture from the bottom to top, make circular ring plate simultaneously be adjacent to skeleton side wall surface, moulding filter disc openend is adjacent to circular ring plate another side, is placed in instrument cases and enters vacuum brazing furnace, is evacuated to (1-3) * 10
-1pa, is warmed up to 850 ℃～900 ℃ with stove, is incubated 5～10 minutes, comes out of the stove, and check weldquality with stove is cooling.
In use, control flow test, when net-filter assembly external and internal pressure difference does not reach while requiring, adopt the quantity in laser fusion sealing of hole or punching, increase and decrease hole, revise pressure difference value.
Above-mentioned steps 1), in, the quantity of described wrinkle is 3～20.
Further, described moulding filter disc is shaped as circular tubbiness or square tubbiness.
The present invention's advantage compared with prior art:
1, the present invention adopts " drawing and forming-laser boring-vacuum brazing " technique, has solved the deficiency that existing process exists, and has improved product and has manufactured efficiency and reliability, has larger using value;
2, adopt laser boring new technology, greatly reduce labour intensity large, the circularity in mesh diameter, pitch of holes, hole easily guarantees, high conformity;
3, adopt first drawing and forming, drilling technology again, in forming wrinkle process, be difficult for causing cracking to scrap, be difficult for causing stress to concentrate, improved product reliability;
4, first drawing and forming, then punch, Kong Buhui deforms, and has guaranteed the effective filtration area of filter screen;
5, in test or use procedure, net-filter assembly external and internal pressure difference is excessive or too small, and methods of available laser fusion sealing of hole or punching all increases and decreases the quantity in hole, makes it have reworkable property, has improved product qualified rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing 1-2, a kind of embodiment of the present invention is described.
Miniature filter screen assembly preparation method for aircraft engine oil piping system, comprises the steps:
1) drawing and forming: get the disk that filter disc raw material strike out certain diameter, with particular manufacturing craft, disk is drawn into again to the tubbiness of certain diameter and height, end face with the flat tubbiness filter disc of lathe openend, and manual deburring, then change another set of particular manufacturing craft from tubbiness filter disc openend along the stretched a plurality of wrinkle 5 formation moulding filter discs 3 of its axis; The quantity of described wrinkle 5 is 3～20;
2) laser boring: tubbiness moulding filter disc 3 is loaded onto after special fixture is got a plurality of apertures 4 with laser on the hemisphere face of its sealing end and taken off, again moulding filter disc 3 is loaded onto to the fixture with calibration function, on the periphery of moulding filter disc 3, also get same aperture 4; Adopt first drawing and forming, drilling technology again, in forming wrinkle process, be difficult for causing cracking to scrap, be difficult for causing stress to concentrate, improved product reliability, and aperture 4 can not deform, guarantee the effective filtration area of filter screen; Adopt laser boring, greatly reduce labour intensity large, the circularity in mesh diameter, pitch of holes, hole easily guarantees, high conformity;
3) vacuum brazing: the ag-cu solder sheet that is 0.2mm by thickness strikes out the circular ring plate 2 that internal-and external diameter is slightly smaller than skeleton 1; With gasoline or ethanol, skeleton 1, moulding filter disc 3 and circular ring plate 2 are cleaned up again; Skeleton 1, circular ring plate 2, moulding filter disc 3 are contained on graphite fixture from the bottom to top, make circular ring plate 2 one sides be adjacent to skeleton 1 side wall surface, moulding filter disc 3 openends are adjacent to circular ring plate 2 another sides, are placed in instrument cases and enter vacuum brazing furnace, are evacuated to (1-3) * 10
-1pa, is warmed up to 850 ℃～900 ℃ with stove, is incubated 5～10 minutes, comes out of the stove, and check weldquality with stove is cooling.In test or use procedure, control flow test, net-filter assembly external and internal pressure difference is excessive or too small, methods of available laser fusion sealing of hole or punching all, adopt the quantity in laser fusion sealing of hole or punching, increase and decrease hole, revise pressure difference value, make it have reworkable property, improved product qualified rate.
Above-described embodiment, is preferred embodiment of the present invention, is not used for limiting the scope of the present invention, and the equivalence of being done with content described in the claims in the present invention therefore all changes, within all should being included in the claims in the present invention scope.
Claims (4)
1. for the miniature filter screen assembly preparation method of aircraft engine oil piping system, it is characterized in that comprising the steps:
1) drawing and forming: get the disk that filter disc raw material strike out certain diameter, with particular manufacturing craft, disk is drawn into again to the tubbiness of certain diameter and height, end face with the flat tubbiness filter disc of lathe openend, and deburring, then change another set of particular manufacturing craft and from tubbiness filter disc openend along the stretched a plurality of wrinkle of its axis (5), form moulding filter disc (3);
2) laser boring: tubbiness moulding filter disc (3) is loaded onto after special fixture is got a plurality of apertures (4) with laser on the hemisphere face of its sealing end and taken off, again moulding filter disc (3) is loaded onto to the fixture with calibration function, on the periphery of moulding filter disc (3), also get same aperture (4);
3) vacuum brazing: the ag-cu solder sheet that is 0.2mm by thickness strikes out the circular ring plate (2) that internal-and external diameter is slightly smaller than skeleton (1); With gasoline or ethanol, skeleton (1), moulding filter disc (3) and circular ring plate (2) are cleaned up again; Skeleton (1), circular ring plate (2), moulding filter disc (3) are contained on graphite fixture from the bottom to top, make circular ring plate (2) one side be adjacent to skeleton (1) side wall surface, moulding filter disc (3) openend is adjacent to circular ring plate (2) another side, be placed in instrument cases and enter vacuum brazing furnace, be evacuated to (1-3) * 10
-1pa, is warmed up to 850 ℃～900 ℃ with stove, is incubated 5～10 minutes, comes out of the stove, and check weldquality with stove is cooling.
2. the miniature filter screen assembly preparation method for aircraft engine oil piping system according to claim 1, it is characterized in that: in use, control flow test, when net-filter assembly external and internal pressure difference does not reach while requiring, the quantity that adopts laser fusion sealing of hole or punching, increase and decrease hole, revises pressure difference value.
3. the miniature filter screen assembly preparation method for aircraft engine oil piping system according to claim 1 and 2, is characterized in that: above-mentioned steps 1), the quantity of described wrinkle (5) is 3～20.
4. the miniature filter screen assembly preparation method for aircraft engine oil piping system according to claim 3, is characterized in that: described moulding filter disc (3) be shaped as circular tubbiness, oval tubbiness or square tubbiness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310683908.2A CN103659205B (en) | 2013-12-13 | 2013-12-13 | For the miniature filter screen assembly preparation method of aircraft engine oil way system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310683908.2A CN103659205B (en) | 2013-12-13 | 2013-12-13 | For the miniature filter screen assembly preparation method of aircraft engine oil way system |
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| CN103659205A true CN103659205A (en) | 2014-03-26 |
| CN103659205B CN103659205B (en) | 2015-08-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104869520A (en) * | 2015-03-16 | 2015-08-26 | 天津市日津科技有限公司 | Telephone receiver grid window and manufacturing method thereof |
| CN113843586A (en) * | 2021-09-17 | 2021-12-28 | 浙江师范大学 | Combined machining method for complex curved surface safety filter screen of aircraft hydraulic system |
| CN114147431A (en) * | 2021-12-13 | 2022-03-08 | 中国航发北京航科发动机控制系统科技有限公司 | High-precision miniature throttle hydraulic valve and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0290908A (en) * | 1988-09-28 | 1990-03-30 | Watanabegiichi Seisakusho:Kk | Filter |
| GB2337019A (en) * | 1997-03-01 | 1999-11-10 | United Wire Ltd | Mounting a filter screen on a support frame |
| CN101287531A (en) * | 2005-01-04 | 2008-10-15 | 3M创新有限公司 | Freeze resistant water filter |
| JP2013173097A (en) * | 2012-02-24 | 2013-09-05 | Yoshiharu Yamamoto | Filtration device for flocculated liquid |
| CN103418989A (en) * | 2012-05-24 | 2013-12-04 | 中国核动力研究设计院 | Reactor filter assembly screen production method |
-
2013
- 2013-12-13 CN CN201310683908.2A patent/CN103659205B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0290908A (en) * | 1988-09-28 | 1990-03-30 | Watanabegiichi Seisakusho:Kk | Filter |
| GB2337019A (en) * | 1997-03-01 | 1999-11-10 | United Wire Ltd | Mounting a filter screen on a support frame |
| CN101287531A (en) * | 2005-01-04 | 2008-10-15 | 3M创新有限公司 | Freeze resistant water filter |
| JP2013173097A (en) * | 2012-02-24 | 2013-09-05 | Yoshiharu Yamamoto | Filtration device for flocculated liquid |
| CN103418989A (en) * | 2012-05-24 | 2013-12-04 | 中国核动力研究设计院 | Reactor filter assembly screen production method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104869520A (en) * | 2015-03-16 | 2015-08-26 | 天津市日津科技有限公司 | Telephone receiver grid window and manufacturing method thereof |
| CN104869520B (en) * | 2015-03-16 | 2018-02-27 | 天津市日津科技有限公司 | Earpiece screen window and its manufacture method |
| CN113843586A (en) * | 2021-09-17 | 2021-12-28 | 浙江师范大学 | Combined machining method for complex curved surface safety filter screen of aircraft hydraulic system |
| CN114147431A (en) * | 2021-12-13 | 2022-03-08 | 中国航发北京航科发动机控制系统科技有限公司 | High-precision miniature throttle hydraulic valve and manufacturing method thereof |
| CN114147431B (en) * | 2021-12-13 | 2023-02-24 | 中国航发北京航科发动机控制系统科技有限公司 | High-precision miniature throttle hydraulic valve and manufacturing method thereof |
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| CN103659205B (en) | 2015-08-26 |
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