CN103659205B - For the miniature filter screen assembly preparation method of aircraft engine oil way system - Google Patents
For the miniature filter screen assembly preparation method of aircraft engine oil way system Download PDFInfo
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- CN103659205B CN103659205B CN201310683908.2A CN201310683908A CN103659205B CN 103659205 B CN103659205 B CN 103659205B CN 201310683908 A CN201310683908 A CN 201310683908A CN 103659205 B CN103659205 B CN 103659205B
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- filter disc
- tubbiness
- engine oil
- aircraft engine
- oil way
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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
-
- 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
A kind of miniature filter screen assembly preparation method for aircraft engine oil way system is provided, adopt " drawing and forming-laser boring-vacuum brazing " technique, not only can alleviate operator's labour intensity, improve the uniformity of product, and test or use procedure in, carry out control flow test, net-filter assembly external and internal pressure difference is excessive or too small, all methods of available laser fusing sealing of hole or punching, adopt the quantity in laser fusion sealing of hole or punching, increase and decrease hole, revise pressure difference value, make it have reworkable property, improve product qualified rate.
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 way system.
Background technology
Certain type flow controller is for aircraft engine oil way system, and it is main containing two miniature filter screen assemblies in forming, and installs, mainly play the effect controlling flow before and after point, the external and internal pressure that can bear 3 ~ 4Kg poor, has the effect of impurity screening simultaneously concurrently.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, and minimum diameter 1.5mm, minimum outer diameter 3.2mm, manufacturing process difficulty is very big.The external manufacturing process adopting " manual drill jig punching-drawing and forming-welding " at present, there is following shortcoming in this kind of method: one is that manual drill jig punching labour intensity is large, and mesh diameter, pitch of holes not easily ensure, homogeneity of product is poor; Two is first punch to be formed after intensive mesh, and intensity reduces greatly, and formed in wrinkle process at drawing and forming, be easy to cause cracking, learies is very large; Three is formed in wrinkle processes at drawing and forming, and along with the deformation of material, hole also deform, what have even blocks, and reduces effective filtration area; Four be first punch, after-drawing moulding process easily causes stress to concentrate, service life and reliability reduce; Five is after first punching, and the quantity in hole is fixed, and the distortion of drawing and forming hole when is uncontrollable, and when external and internal pressure difference does not reach and requires, cannot reprocess, only scrap, product qualified rate is extremely low.Above-mentioned defect prepares 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 way system is provided, adopt " drawing and forming-laser boring-vacuum brazing " technique, operator's labour intensity can be alleviated, improve homogeneity of product, possess economy and reworkable property, easily realize the using function of product, improve product reliability.
The technical solution used in the present invention: for the miniature filter screen assembly preparation method of aircraft engine oil way system, comprise 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 the tubbiness of certain diameter and height again, with the end face of lathe flat tubbiness filter disc openend, and deburring, then change another set of particular manufacturing craft and form shaping filter disc from tubbiness filter disc openend along the stretched multiple wrinkle of its axis;
2) laser boring: shaping for tubbiness filter disc is loaded onto after special fixture laser gets multiple aperture on the hemisphere face of its sealing end and takes off, more shaping filter disc is loaded onto the fixture with calibration function, the periphery of shaping filter disc also gets same aperture;
3) vacuum brazing: be that the ag-cu solder sheet of 0.2mm strikes out the circular ring plate that internal-and external diameter is slightly smaller than skeleton by thickness; With gasoline or ethanol, skeleton, shaping filter disc and circular ring plate are cleaned up again; Skeleton, circular ring plate, shaping filter disc are contained in from the bottom to top on graphite fixture, make circular ring plate one side be adjacent to skeleton side wall surface, shaping 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 DEG C ~ 900 DEG C with stove, is incubated 5 ~ 10 minutes, comes out of the stove, and check weldquality with stove cooling.
In use, carry out control flow test, when net-filter assembly external and internal pressure difference do not reach require time, 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, the shape of described shaping filter disc is 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, solves the deficiency that existing process exists, improves product manufacturing efficiency and reliability, have larger using value;
2, adopt laser boring new technology, greatly reduce labour intensity large, the circularity in mesh diameter, pitch of holes, hole easily ensures, uniformity is good;
3, adopt first drawing and forming, again drilling technology, in formation wrinkle process, not easily cause cracking to scrap, not easily cause stress to concentrate, improve product reliability;
4, first drawing and forming, then punch, hole can not deform, and ensure that 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 all available laser fusing sealing of hole or the method for punching, increase and decrease the quantity in hole, make it have reworkable property, improve product qualified rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the left view of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-2, a kind of embodiment of the present invention is described.
For the miniature filter screen assembly preparation method of aircraft engine oil way system, comprise 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 the tubbiness of certain diameter and height again, with the end face of lathe flat tubbiness filter disc openend, and manual deburring, then change another set of particular manufacturing craft and form shaping filter disc 3 from tubbiness filter disc openend along the stretched multiple wrinkle 5 of its axis; The quantity of described wrinkle 5 is 3 ~ 20;
2) laser boring: shaping for tubbiness filter disc 3 is loaded onto after special fixture laser gets multiple aperture 4 on the hemisphere face of its sealing end and take off, again shaping filter disc 3 is loaded onto the fixture with calibration function, the periphery of shaping filter disc 3 also gets same aperture 4; Adopt first drawing and forming, again drilling technology, in formation wrinkle process, not easily cause cracking to scrap, not easily cause stress to concentrate, improve product reliability, and aperture 4 can not deform, ensure that 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 ensures, uniformity is good;
3) vacuum brazing: be that the ag-cu solder sheet of 0.2mm strikes out the circular ring plate 2 that internal-and external diameter is slightly smaller than skeleton 1 by thickness; With gasoline or ethanol, skeleton 1, shaping filter disc 3 and circular ring plate 2 are cleaned up again; Skeleton 1, circular ring plate 2, shaping filter disc 3 are contained in from the bottom to top on graphite fixture, make circular ring plate 2 one side be adjacent to skeleton 1 side wall surface, shaping filter disc 3 openend is adjacent to circular ring plate 2 another side, is placed in instrument cases and enters vacuum brazing furnace, be evacuated to (1-3) * 10
-1pa, is warmed up to 850 DEG C ~ 900 DEG C with stove, is incubated 5 ~ 10 minutes, comes out of the stove, and check weldquality with stove cooling.Test or use procedure in, carry out control flow test, net-filter assembly external and internal pressure difference is excessive or too small, all methods of available laser fusing sealing of hole or punching, adopt the quantity in laser fusion sealing of hole or punching, increase and decrease hole, revise pressure difference value, make it have reworkable property, improve product qualified rate.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (4)
1., for the miniature filter screen assembly preparation method of aircraft engine oil way 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 the tubbiness of certain diameter and height again, with the end face of lathe flat tubbiness filter disc openend, and deburring, then change another set of particular manufacturing craft and form shaping filter disc (3) from tubbiness filter disc openend along the stretched multiple wrinkle (5) of its axis;
2) laser boring: shaping for tubbiness filter disc (3) is loaded onto after special fixture laser gets multiple aperture (4) on the hemisphere face of its sealing end and takes off, again shaping filter disc (3) is loaded onto the fixture with calibration function, the periphery of shaping filter disc (3) is also got same aperture (4);
3) vacuum brazing: be that the ag-cu solder sheet of 0.2mm strikes out the circular ring plate (2) that internal-and external diameter is slightly smaller than skeleton (1) by thickness; With gasoline or ethanol, skeleton (1), shaping filter disc (3) and circular ring plate (2) are cleaned up again; Skeleton (1), circular ring plate (2), shaping filter disc (3) are contained on graphite fixture from the bottom to top, circular ring plate (2) one side is made to be adjacent to skeleton (1) side wall surface, shaping 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 DEG C ~ 900 DEG C with stove, is incubated 5 ~ 10 minutes, comes out of the stove, and check weldquality with stove cooling.
2. the miniature filter screen assembly preparation method for aircraft engine oil way system according to claim 1, it is characterized in that: in use, carry out control flow test, when net-filter assembly external and internal pressure difference do not reach require time, adopt the quantity in laser fusion sealing of hole or punching, increase and decrease hole, revise pressure difference value.
3. the miniature filter screen assembly preparation method for aircraft engine oil way system according to claim 1 and 2, is characterized in that: above-mentioned steps 1) in, the quantity of described wrinkle (5) is 3 ~ 20.
4. the miniature filter screen assembly preparation method for aircraft engine oil way system according to claim 3, is characterized in that: the shape of described shaping filter disc (3) is 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN103659205A CN103659205A (en) | 2014-03-26 |
| CN103659205B true CN103659205B (en) | 2015-08-26 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113843586B (en) * | 2021-09-17 | 2023-04-28 | 浙江师范大学 | Combined processing method for complex curved surface safety filter screen of airplane hydraulic system |
| 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 |
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 |
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| Publication number | Publication date |
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| CN103659205A (en) | 2014-03-26 |
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