CN109622542A - Fanjet bearing case bearing insert processes protective device and method - Google Patents
Fanjet bearing case bearing insert processes protective device and method Download PDFInfo
- Publication number
- CN109622542A CN109622542A CN201811488802.6A CN201811488802A CN109622542A CN 109622542 A CN109622542 A CN 109622542A CN 201811488802 A CN201811488802 A CN 201811488802A CN 109622542 A CN109622542 A CN 109622542A
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- China
- Prior art keywords
- face
- bearing
- bearing case
- sealing cover
- bearing insert
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a kind of fanjet bearing case bearing insert processing protective device and methods, protective device includes sealing cover and seal receptacle, the two forms a seal cavity, adhesive is used simultaneously, using method of the protective device in conjunction with protective rubber, when cleaning bearing case, machine is held to the bearing insert position of casing and the liquid water segregation of cleaning, corrosion and potential corrosion so as to avoid bearing insert.
Description
Technical field
The present invention relates to the means of defence of aeroplane engine machining process, especially a kind of fanjet bearing case axis
The device and method for holding anti-corrosion in bushing process.
Background technique
The material that fanjet support casing is related to is TA15,2Cr3WMoV and GH2696 etc., is zero group multistage
Part Combination Welding forms, weld seam is more, and its structure is complicated, and the positions such as supporting plate, flow splitter and lubricating oil collector exist a large amount of
Cavity, and part cavity is deep narrow thin mouth structure.In the cavity that the iron filings generated in postwelding machining are easily accessible, remove
Difficulty is big.Therefore, urea is first added in part cavities body before mechanical machining, is then filled with paraffin sealing and blocks cavity, prevents
Only fifth wheel enters, and removes paraffin and urea by going to impregnate with hot water after the completion of machining, it is small that the removal time generally requires 20
When or so, and the bearing insert material on bearing case is 2Cr3WMoV in the process, this material is contacted with water and urea
After be easy to produce corrosion, part rejection is caused when serious.Therefore, it is necessary to take bearing insert anti-when bearing case cleans
Rust protection, to guarantee the processing quality of bearing case.
Summary of the invention
The technical problem to be solved by the present invention is a kind of protective device and means of defence are provided, when cleaning bearing case,
Machine is held to the bearing insert position of casing and the liquid water segregation of cleaning, to avoid the corrosion of bearing insert and current potential rotten
Erosion.
The present invention is realized by following technical solutions:
Fanjet bearing case bearing insert processes protective device, comprising:
Sealing cover, the sealing cover include the circular ring shape matrix that diameter is more than or equal to bearing case bearing insert end face circle,
And outer diameter coaxial with the circular ring shape matrix is provided on one end face of circular ring shape matrix to wait protecting equal to bearing case bearing insert
The torus of mask internal diameter is provided with and bearing case bearing insert end face along torus external circumferential and on circular ring shape matrix
The corresponding hole in hole and at least one inflate hole；
Seal receptacle, the seal receptacle include a solid disk, and the diameter of disk is equal to bearing case bearing insert inner hole
Diameter has an and surface threaded cylinder coaxial with disk on the end face of disk；
The sealing cover is coaxial with seal receptacle and is connected by nut.
A kind of fanjet bearing case bearing insert processing protection using above-mentioned protective device, including following step
It is rapid:
Step 1 coats adhesive on bearing case bearing insert face surface to be protected；
Sealing cover and bearing case bearing insert are carried out clamping, the circular ring shape matrix and bearing machine of sealing cover by step 2
The fitting of casket bearing insert end face, and the hole on circular ring shape matrix is aligned with bearing case bearing insert end-face hole, the circle of sealing cover
Ring body end face is bonded with the annulus protrusion front end face on bearing case bearing insert inner wall；
Seal receptacle is inserted into, the end face of disk and bearing case axis by step 3 from the other end of bearing case bearing insert
The rear end face fitting of the annulus protrusion on bushing inner wall is held, the threaded cylinder in surface is inserted into the interior of the circular ring shape matrix of sealing cover
In annular distance, nut check sealing cover and seal receptacle are then used；
Step 4, fanjet bearing case is whole into the water, it is inflated, has been seen whether by inflating hole
Bubble overflows, if nothing, is filled object removal, if so, then repeating step 2 to step 4.
Preferably, it in the step 2, is placed between the circular ring shape matrix and bearing case bearing insert end face of sealing cover
There is diaphragm seal, is placed between the annulus protrusion front end face on the torus end face and bearing case bearing insert inner wall of sealing cover
Diaphragm seal.
The present invention is protected easy-to-rust piece surface by design set of device, avoids the face in removal filler
Shi Yushui contact, to solve the problems, such as that bearing insert corrodes and the potential corrosion in urea liquid in water.Avoid with
While water contacts, device cannot stop filler to flow out.Since part is to heat in water when removing filler, in temperature
Variation under protect it is intracavitary will form droplet, to avoid the situation, be coated with one layer of adhesive in piece surface and (pass through test
It was found that part can not be also effectively protected in adhesive under the protection of not device).Guaranteeing device seal aspect, device
Upper design inflates hole and after device clamping into the water after part is invaded completely by water, is inflated with inflator, and observation is
It is no to have bubble spilling, as bubble-free will beat port sealing, filler can be removed.
Compared with the conventional method, the present invention protects complicated cavity part easy-to-rust position by designing set of device
Shield, avoids contacting the corrosion for effectively preventing part and potential corrosion with water, while device effectively avoids filler
Tap hole ensure that the leakproofness of device by the method inflated, and provide effective side in the anticorrosion of complicated cavity part
Method.
Detailed description of the invention
Fig. 1 is sealing cover structure schematic diagram；
Fig. 1-1 is Section A-A schematic diagram in Fig. 1；
Fig. 2 is seal receptacle structural schematic diagram；
Fig. 2-1 is Section A-A schematic diagram in Fig. 2；
Fig. 3 and Fig. 3-1 is nut schematic diagram.
Specific embodiment
Technical solution of the present invention is described further below in conjunction with attached drawing, but required protection scope does not limit to
In described.
Fanjet support casing belongs to more materials, complicated cavity, the part with corrosion susceptible materials.Bearing case axis
It holds perishable surface to be protected on bushing and needs specially treated.
If Fig. 1, Fig. 1-1, Fig. 2, Fig. 3-1, Fig. 3 and Fig. 3-1 are this body structures of the processing environment and part according to part
The protective device figure of design, the device include sealing cover (such as Fig. 1 and Fig. 1-1), and sealing cover includes that diameter is equal to bearing case axis
The circular ring shape matrix of bush end face circle is held, is provided with and outer diameter coaxial with the circular ring shape matrix on an end face of circular ring shape matrix
Equal to the torus of bearing case bearing insert face internal diameter to be protected, opened along torus external circumferential and on circular ring shape matrix
There is a hole corresponding with bearing case bearing insert end-face hole and one is inflated hole；Seal receptacle (such as Fig. 2 and Fig. 2-1), seal receptacle
Including a solid disk, the diameter of disk is equal to the diameter of bearing case bearing insert inner hole, has one and circle on the end face of disk
Disk is coaxial and the threaded cylinder in surface；Sealing cover and seal receptacle coaxially and by nut (such as Fig. 3 and Fig. 3-1) connect.
Before removing filler, execute as steps described below:
(1) size and material (using 0Cr18Ni9) of protective device are determined, and to be protected in bearing case bearing insert
Surface coat adhesive (such as polyvinyl chloride)；
(2) clamping is carried out to part, sealing cover and bearing case bearing insert is subjected to clamping, the circular ring shape base of sealing cover
Body be bonded with bearing case bearing insert end face (i.e. the face device B and bearing case bearing insert end face in Fig. 1-1, the two it
Between install diaphragm seal additional), and the hole on circular ring shape matrix is aligned with bearing case bearing insert end-face hole, the annulus body end of sealing cover
Face is bonded (the i.e. face device A and annulus protrusion front end in Fig. 1-1 with the annulus protrusion front end face on bearing case bearing insert inner wall
Face installs therebetween diaphragm seal additional)；
(3) seal receptacle is inserted into from the other end of bearing case bearing insert, the end face of disk and bearing case jewel
Cover the rear end face fitting of the annulus protrusion on inner wall, the interior annular distance of the circular ring shape matrix of the threaded cylinder insertion sealing cover in surface
In, nut check sealing cover and seal receptacle are then used, fits closely protective device and part by tightening nut, compression seal
Piece, to play the role of sealing；
(4) it inflates fanjet bearing case axis is whole into the water and from hole is inflated, has seen whether gas
Bubble overflows, if any then clamping, guarantee bubble-free can be removed filler after overflowing again.
Claims (3)
1. fanjet bearing case bearing insert processes protective device characterized by comprising
Sealing cover, the sealing cover include the circular ring shape matrix that diameter is more than or equal to bearing case bearing insert end face circle, annulus
And outer diameter coaxial with the circular ring shape matrix is provided on one end face of shape matrix equal to bearing case bearing insert face to be protected
The torus of internal diameter is provided with and bearing case bearing insert end-face hole pair along torus external circumferential and on circular ring shape matrix
The hole answered and at least one inflate hole；
Seal receptacle, the seal receptacle include a solid disk, and the diameter of disk is equal to the diameter of bearing case bearing insert inner hole,
There is an and surface threaded cylinder coaxial with disk on the end face of disk；
The sealing cover is coaxial with seal receptacle and is connected by nut.
2. a kind of fanjet bearing case bearing insert using protective device described in claim 1 processes protection, special
Sign is, comprising the following steps:
Step 1 coats adhesive on bearing case bearing insert face surface to be protected；
Sealing cover and bearing case bearing insert are carried out clamping, the circular ring shape matrix and bearing case axis of sealing cover by step 2
Bush end face fitting is held, and the hole on circular ring shape matrix is aligned with bearing case bearing insert end-face hole, the torus of sealing cover
End face is bonded with the annulus protrusion front end face on bearing case bearing insert inner wall；
Seal receptacle is inserted into, the end face of disk and bearing case jewel by step 3 from the other end of bearing case bearing insert
Cover the rear end face fitting of the annulus protrusion on inner wall, the interior annular distance of the circular ring shape matrix of the threaded cylinder insertion sealing cover in surface
In, then use nut check sealing cover and seal receptacle；
Step 4, fanjet bearing case is whole into the water, it is inflated by inflating hole, has seen whether bubble
It overflows, if nothing, is filled object removal, if so, then repeating step 2 to step 4.
3. fanjet bearing case bearing insert processing protection according to claim 2, it is characterised in that: the step
In rapid two, diaphragm seal, the annulus of sealing cover are placed between the circular ring shape matrix and bearing case bearing insert end face of sealing cover
Diaphragm seal is placed between annulus protrusion front end face on body end face and bearing case bearing insert inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488802.6A CN109622542B (en) | 2018-12-06 | 2018-12-06 | Turbofan engine supporting case bearing bush machining protection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488802.6A CN109622542B (en) | 2018-12-06 | 2018-12-06 | Turbofan engine supporting case bearing bush machining protection device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109622542A true CN109622542A (en) | 2019-04-16 |
| CN109622542B CN109622542B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811488802.6A Active CN109622542B (en) | 2018-12-06 | 2018-12-06 | Turbofan engine supporting case bearing bush machining protection device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109622542B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977109A (en) * | 2021-12-15 | 2022-01-28 | 中国航发动力股份有限公司 | Machining method for finger tip sealing piece of aero-engine |
| CN114986443A (en) * | 2022-05-09 | 2022-09-02 | 中国人民解放军第五七一九工厂 | Assembly protection structure of aero-engine support assembly, use method and preparation method |
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| CN103939447A (en) * | 2014-04-10 | 2014-07-23 | 西安交通大学 | Double-seal bolt |
| CN203926761U (en) * | 2014-07-10 | 2014-11-05 | 宁波市天基隆智控技术有限公司 | A kind of for lining plate of coal grinder bolt seal assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977109A (en) * | 2021-12-15 | 2022-01-28 | 中国航发动力股份有限公司 | Machining method for finger tip sealing piece of aero-engine |
| CN113977109B (en) * | 2021-12-15 | 2023-11-03 | 中国航发动力股份有限公司 | Processing method of aeroengine fingertip sealing plate |
| CN114986443A (en) * | 2022-05-09 | 2022-09-02 | 中国人民解放军第五七一九工厂 | Assembly protection structure of aero-engine support assembly, use method and preparation method |
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| Publication number | Publication date |
|---|---|
| CN109622542B (en) | 2021-11-12 |
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