CN106493503A - A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity - Google Patents
A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity Download PDFInfo
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- CN106493503A CN106493503A CN201611061454.5A CN201611061454A CN106493503A CN 106493503 A CN106493503 A CN 106493503A CN 201611061454 A CN201611061454 A CN 201611061454A CN 106493503 A CN106493503 A CN 106493503A
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- rear housing
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- bolt hole
- precision
- longevity
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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
- B23P6/00—Restoring or reconditioning objects
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Abstract
A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity, its process route are as follows successively：Collect neat parts inspection and assemble and adjust and pull down the measurement of 8 bolts and mend the measurement final inspections of process and assemble precision bolts；Wherein：Simultaneously method of adjustment meets following requirements for assembling：Clamping rear housing (1) on precise rotating platform, fixture datum are A, B face, and fixture is adjusted；The stage (2) will be turned and Bearing Casing (3) will be assembled on rear housing (1), three parts be connected with bolt；The bounce of measurement Bearing Casing (3) C, D face；Then by nut screwing clamping, measured until qualified again；Bolt precision bolt hole at is finally pulled down.The present invention proposes a kind of practicable for the rear housing precision bolt hole Combined machining process that repairs to the longevity, its high precision, low cost, remarkable in economical benefits.
Description
Technical field
The present invention relates to electromotor spare part is to longevity repairing precision bolt hole machined and Assembly Process planning and application technology
Field, specifically provides a kind of rear housing precision bolt hole Combined machining process that repairs to the longevity.
Background technology
Turbine rear casing cell cube is the main load part at electromotor rear portion, is equipped with Bearing Casing and turns on rear housing
Section is connect, is to ensure electromotor low pressure rotor reliably working, is strengthened by 24 between Bearing Casing, group section and rear housing housing
Bolt is fixed, and it is precision positioning bolt wherein to have 8 bolts.Electromotor need to return factory and enter using after a lifetime at present
Row repair, in repairing rear housing because its structure be welding structural element, by working stress and thermal stress is affected exist increasing become
Shape, when there are the parts that replacing new product or life-span satisfaction are required in repairing, precision bolt hole site is subjected to displacement, it is impossible to meet
Matching requirements, are necessary to carry out the Combined machining technical research for this.
The rear housing molectron that repairs to the longevity by rear housing 1, turn stage 2, Bearing Casing 3 and constitute；Technology after assembling will
Ask for：On the basis of A, B face, C faces end face run-out is not more than 0.03mm, and the radial direction in D faces is transferred and is not more than 0.05mm, see Fig. 1 (plus
Work schematic diagram)；Be distributed on C faces, 24 bolts hole of upper EDS maps, wherein 8 bolts hole are precision bolt hole, equal portion in C faces,
Machining accuracy isMm, precision bolt matching part size isThe position degree in hole is relative to A, B, G
On the basis of face, position degree is not more than 0.1mm, sees Fig. 2 (the bolt hole location drawing)；Strengthening stud is required with the cooperation in precision bolt hole
0～0.018mm of gap；Self-locking nut screw-down torque is 15～20N.m；
Technological difficulties：(1) rear housing is welding structural element, and after work, parts deformation is larger, repairs because of repair welding and lead in repairing
Precision bolt hole portion position relative datum face A, B change is caused, and the bounce that cannot meet D faces after No. 2 parts and No. 3 parts being assembled for this will
Ask, need to adjust；(2) 3 piece numbers are programmed using numerical control borer during fabrication, complete the processing of bolt hole, and new product can when assembling
Meet and require, but vibrated in use and temperature, air stream is added because parts are using rear Stress Release in repairing after use
The impact of body, the machining benchmark of each part are deformed, and to precision bolt hole positional precision beyond design will
Ask, combining again cannot be while full scale assembling bounce have been required and precision bolt matching requirements.
To the longevity repair rear housing molectron in repairing and manufacture, for more than two parts spare part combination after,
The precision bolt hole of installation is to carry out Combined machining after assembling is combined, and the machining accuracy in the position degree of processing mesopore and hole is equal
To be ensured by machine tooling, but parts using one or more overhaul the phase after, combination parts are because using rear component wear, splitting
The problems such as stricture of vagina, needs to place under repair and part of exchanging causes precision bolt hole location be consistent, and leads to not be assembled
Problem.Need to carry out technique research for this, solve repair member assembly and use requirements.
People are highly desirable to obtain a kind of excellent rear housing precision bolt hole Combined machining to longevity repairing of technique effect
Process.
Content of the invention
It is an object of the invention to provide a kind of technique effect is excellent adding to the rear housing precision bolt hole combination that the longevity repairs
Work process.For the electromotor spare part that repairs to the longevity because being deformed using rear parts, the part etc. that weares and teares and exchange in repairing is asked
Topic, causes precision bolt hole location in spare part assembling to change, it is impossible to meet technical requirements, formulate for this and repair processing
And assembly technique, solve the technical problem.
The invention provides a kind of rear housing precision bolt hole Combined machining process that repairs to the longevity, to longevity repairing
Rear housing molectron by rear housing 1, turn stage 2, Bearing Casing 3 and constitute；Technical requirements after assembling are：On the basis of A, B face,
C faces end face run-out is not more than 0.03mm, and the radial direction in D faces is transferred and is not more than 0.05mm, sees Fig. 1 (machining sketch chart)；It is distributed in C faces
On, 24 bolts hole of upper EDS maps, wherein 8 bolts hole are precision bolt hole, and equal portion in C faces, machining accuracy isPrecision bolt matching part size isOn the basis of the position degree in hole is relative to A, B, G face, position
Degree of putting is not more than 0.1mm, sees Fig. 2 (the bolt hole location drawing)；The cooperation in strengthening stud and precision bolt hole require gap 0～
0.018mm；Self-locking nut screw-down torque is 15～20N.m；It is characterized in that：To the rear housing precision bolt hole combination that the longevity repairs
The process route of technological method for processing is as follows successively：Collect neat parts inspection and assemble and adjust and pull down 8 bolts
The measurement final inspection of process and assemble precision bolt is mended in measurement；Wherein：
Simultaneously method of adjustment meets following requirements for assembling：On precise rotating platform, clamping parts 1 are rear housing 1, and fixture datum is
A, B face, fixture is adjusted, and end is jumped and footpath is jumped and is not more than 0.02mm；Part 2 and part 3 are turned the stage 2 and Bearing Casing 3 is filled
It is fitted on part 1 i.e. rear housing 1, three parts is connected with 24 bolts, screw nut pre-screwing；Measurement Bearing Casing 3C faces and D faces
Bounce, the bounce of C faces are not more than 0.03mm, and the bounce of D faces is not more than 0.05mm；When C faces, bounce is overproof, then by repairing part 2 be
The end face run-out for turning the stage 2 ensures that C faces are qualified；When D faces, bounce is unqualified, then by adjusting the radial direction that part 3 is Bearing Casing 3
String quantity of motion ensures that the circular runout of D faces is required；Then by 24 nut screwing clampings, measured until qualified again；According to Fig. 2 after qualified,
Pull down the bolt at 8 precision bolt holes.
The rear housing precision bolt hole Combined machining process that repairs to the longevity, it is characterised in that：Mend processing technique
Method meets following requirements：
The fixture for assembling and spare part are attached on jig boring machine, are measured and centering benchmark, benchmark bounce is not more than
0.02mm；Position measurement is carried out to precision bolt hole, and position degree is little in change, in the case that the skew in three part holes is little
Directly ream, see Fig. 3, it is ensured that technical requirements；
In the case of precision bolt hole location and 3 part holes are run into by offseting, adopt precision bolt hole increase group
Method for distinguishing, i.e. each group increase 0.2mm, while being combined brill bore hole with the method for making precision bolt ensures that assembling will
Ask；Combined machining in the repairing of the method energy effectively solving, the method for increasing bolt hole dimensional tolerance solve the dress of rear housing component
Match somebody with somebody technical requirements.
The present invention, becomes because changing part or rear housing weld repairs for the rear housing molectron that repairs to the longevity in repairing
After shape, it is impossible to meet assembly technical requirement and formulate.Precision bolt coordinates require to be 0-0.018mm with bolt hole, and the position is 3
Individual spare part composition, while will also ensure C, D face jerk value requirement of Bearing Casing 3.Added by adopting combination assembling, combination
Work, increases precision bolt group, completes the repairing assembly work of the part, reach the applicable function of rear housing assembling assembly.
The core technology that the present invention need to be protected：Combination equipment adjustment technology, Combined machining and mounting technology, precision bolt hole
Group distribution is required.
The present invention is adjusted using measurement by the rear housing molectron to repairing to the longevity in Practical Project implementation process,
Combined machining, precision bolt increaseTwo bolt groups, can solve multiple returning
The parts for repairing the phase repair needs, ensure that bolt hole precision-fit is required by combining drill reaming, while also ensure that group after assembling
The end face run-out of component and the requirement of circular runout.Test through the on-site verification of a year, recovered up to a hundred rear housing combinations
The use of part, meets technical requirements, reduces repair cost.Studied by contrast verification, one is repaired using the method for the invention
Platform turbine rear casing molectron, by testing and applying, reduces spare part combination assembling and cannot meet technical requirements, and using more
The cost that changes planes part and bring increases, and changes part rate and is reduced to 0 by 100%；Separate unit can save at least 200,000 yuan of funds associated therewith, warp
Ji remarkable benefit.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation：
Fig. 1 is the rear housing precision bolt hole Combined machining simplified schematic diagram that repairs to the longevity；
Fig. 2 is bolt hole position simplified schematic diagram；
Fig. 3 is precision bolt hole machined scale diagrams；
Fig. 4 is precision bolt assembling schematic diagram.
Specific embodiment
Reference implication is as follows：Casing 1, turn stage 2, Bearing Casing 3, fixture 4；
The position for having circular runout requirement being also pointed out in Fig. 1 on the lower-left lateral surface of Fig. 1 lower left corners fixture 4 and Fig. 1
The position for having end face run-out requirement on the upper left quarter upper side of lower left corner fixture 4.
Embodiment 1
A kind of rear housing precision bolt hole Combined machining process that repairs to the longevity, to the rear housing molectron that the longevity repairs
By rear housing 1, turn stage 2, Bearing Casing 3 and constitute；Technical requirements after assembling are：On the basis of A, B face, C faces end face run-out
The radial direction in no more than 0.03mm, D face is transferred and is not more than 0.05mm, sees Fig. 1 (machining sketch chart)；It is distributed on C faces, upper EDS maps
24 bolts hole, wherein 8 bolts hole are precision bolt hole, and equal portion in C faces, machining accuracy isPrecision bolt
Matching part size isOn the basis of the position degree in hole is relative to A, B, G face, position degree is not more than 0.1mm, sees figure
2 (the bolt hole locations drawing)；Strengthening stud requires 0～0.018mm of gap with the cooperation in precision bolt hole；Self-locking nut screw-down torque
For 15～20N.m；It is characterized in that：To the longevity repair rear housing precision bolt hole Combined machining process process route according to
Secondary as follows：Collect neat parts inspection and assemble and adjust and pull down the measurement of 8 bolts and mend process and assembles essence
Close bolt measures final inspection；Wherein：
Simultaneously method of adjustment meets following requirements for assembling：On precise rotating platform, clamping parts 1 are rear housing 1, and fixture datum is
A, B face, fixture is adjusted, and end is jumped and footpath is jumped and is not more than 0.02mm；Part 2 and part 3 are turned the stage 2 and Bearing Casing 3 is filled
It is fitted on part 1 i.e. rear housing 1, three parts is connected with 24 bolts, screw nut pre-screwing；Measurement Bearing Casing 3C faces and D faces
Bounce, the bounce of C faces are not more than 0.03mm, and the bounce of D faces is not more than 0.05mm；When C faces, bounce is overproof, then by repairing part 2 be
The end face run-out for turning the stage 2 ensures that C faces are qualified；When D faces, bounce is unqualified, then by adjusting the radial direction that part 3 is Bearing Casing 3
String quantity of motion ensures that the circular runout of D faces is required；Then by 24 nut screwing clampings, measured until qualified again；According to Fig. 2 after qualified,
Pull down the bolt at 8 precision bolt holes.
The rear housing precision bolt hole Combined machining process that repairs to the longevity, it is characterised in that：Mend processing technique
Method meets following requirements：
The fixture for assembling and spare part are attached on jig boring machine, are measured and centering benchmark, benchmark bounce is not more than
0.02mm；Position measurement is carried out to precision bolt hole, and position degree is little in change, in the case that the skew in three part holes is little
Directly ream, see Fig. 3, it is ensured that technical requirements；
In the case of precision bolt hole location and 3 part holes are run into by offseting, adopt precision bolt hole increase group
Method for distinguishing, i.e. each group increase 0.2mm, while being combined brill bore hole with the method for making precision bolt ensures that assembling will
Ask；Combined machining in the repairing of the method energy effectively solving, the method for increasing bolt hole dimensional tolerance solve the dress of rear housing component
Match somebody with somebody technical requirements.
The present embodiment is directed to the rear housing molectron of longevity repairing in repairing, because changing part or rear housing weld repairs
After deformation, it is impossible to meet assembly technical requirement and formulate.Precision bolt coordinates requirement for 0-0.018mm with bolt hole, the position
Constitute for 3 spare parts, while will also ensure C, D face jerk value requirement of Bearing Casing 3.By adopting combination assembling, combination
Processing, increases precision bolt group, completes the repairing assembly work of the part, reach the applicable function of rear housing assembling assembly.
The core technology that the present embodiment need to be protected：Combination equipment adjustment technology, Combined machining and mounting technology, precision bolt
Hole group distribution is required.
The present embodiment is adjusted using measurement by the rear housing molectron to repairing to the longevity in Practical Project implementation process
Whole, Combined machining, precision bolt increaseTwo bolt groups, can solve many
The individual parts for reprocessing the phase repair needs, ensure that bolt hole precision-fit is required by combining drill reaming, while also ensure that assembling
The requirement of the end face run-out of molectron and circular runout afterwards.Test through the on-site verification of a year, recovered up to a hundred rear housings
The use of molectron, meets technical requirements, reduces repair cost.Studied by contrast verification, using the present embodiment methods described
A turbine rear casing molectron is repaired, by testing and applying, spare part combination assembling is reduced and cannot be met technical requirements, and
The cost brought using parts are changed increases, and changes part rate and is reduced to 0 by 100%；Separate unit can save funds associated therewith at least 20
Wan Yuan, remarkable in economical benefits.
Claims (2)
1. a kind of to the longevity repair rear housing precision bolt hole Combined machining process, to the longevity repair rear housing molectron by
Rear housing (1), turn the stage (2), Bearing Casing (3) composition；Technical requirements after assembling are：On the basis of A, B face, C faces end face
Bounce is not more than 0.03mm, and the radial direction in D faces is transferred and is not more than 0.05mm；It is distributed on C faces, 24 bolts hole of upper EDS maps, its
In 8 bolts hole be precision bolt hole, equal portion in C faces, machining accuracy isPrecision bolt matching part size
ForOn the basis of the position degree in hole is relative to A, B, G face, position degree is not more than 0.1mm；Strengthening stud and accurate spiral shell
The cooperation of keyhole requires 0～0.018mm of gap；Self-locking nut screw-down torque is 15～20N.m；It is characterized in that：Repair to the longevity
Rear housing precision bolt hole Combined machining process process route as follows successively：Collect neat parts inspection to assemble and adjust
Whole pull down the measurement of 8 bolts and mend the measurement final inspections of process and assemble precision bolts；Wherein：
Simultaneously method of adjustment meets following requirements for assembling：Clamping rear housing (1) on precise rotating platform, fixture datum are A, B face, will folder
Tool adjustment, end is jumped and footpath is jumped and is not more than 0.02mm；The stage (2) will be turned and Bearing Casing (3) will be assembled on rear housing (1), use 24
Three parts are connected by individual bolt, screw nut pre-screwing；Measurement Bearing Casing (3) C faces and the bounce of D faces, the bounce of C faces are not more than
The bounce of 0.03mm, D face is not more than 0.05mm；When C faces, bounce is overproof, then ensure C faces by repairing the end face run-out for turning the stage (2)
Qualified；When D faces, bounce is unqualified, then ensure that the circular runout of D faces is required by adjusting the radial direction string quantity of motion of Bearing Casing (3)；So
Afterwards by 24 nut screwing clampings, measured until qualified again；The bolt at 8 precision bolt holes is pulled down after qualified.
2. according to the rear housing precision bolt hole Combined machining process described in claim 1 to longevity repairing, it is characterised in that：
Mend technological method for processing and meet following requirements：
The fixture for assembling and spare part are attached on jig boring machine, are measured and centering benchmark, benchmark bounce is not more than 0.02mm；
Position measurement is carried out to precision bolt hole, is reamed, it is ensured that technical requirements；
In the case of precision bolt hole location and 3 part holes are run into by offseting, adopting will be other for increase group in precision bolt hole
Method, i.e. each group increase 0.2mm, while being combined brill bore hole with the method for making precision bolt ensures matching requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061454.5A CN106493503B (en) | 2016-11-25 | 2016-11-25 | A kind of rear housing precision bolt hole Combined machining process repaired to the longevity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611061454.5A CN106493503B (en) | 2016-11-25 | 2016-11-25 | A kind of rear housing precision bolt hole Combined machining process repaired to the longevity |
Publications (2)
| Publication Number | Publication Date |
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| CN106493503A true CN106493503A (en) | 2017-03-15 |
| CN106493503B CN106493503B (en) | 2019-02-12 |
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| CN201611061454.5A Active CN106493503B (en) | 2016-11-25 | 2016-11-25 | A kind of rear housing precision bolt hole Combined machining process repaired to the longevity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315276A (en) * | 2019-07-09 | 2019-10-11 | 中国航发哈尔滨东安发动机有限公司 | A kind of weak rigid casing repair method of aviation |
| CN112705905A (en) * | 2021-01-08 | 2021-04-27 | 成都国营锦江机器厂 | Method for repairing BP-14 main reducer driven spiral bevel gear assembly |
| CN113352051A (en) * | 2021-06-24 | 2021-09-07 | 中国民用航空飞行学院 | Piston type aeroengine casing joint surface repairing method |
| CN113977192A (en) * | 2021-11-01 | 2022-01-28 | 安徽应流航源动力科技有限公司 | Method for machining datum hole of cartridge receiver without tool |
| CN115041914A (en) * | 2022-06-21 | 2022-09-13 | 湖南南方通用航空发动机有限公司 | Method for repairing inner hole of casing and casing |
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| CN104384815A (en) * | 2014-10-31 | 2015-03-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for repairing corner of locating pin of bearing case |
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| JP2008173995A (en) * | 2007-01-16 | 2008-07-31 | Ntn Corp | Bearing device for wheel |
| CN103600200A (en) * | 2013-10-19 | 2014-02-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Mounting seat replacing and repairing method of T300/BMP-316 composite material bypass duct case |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110315276A (en) * | 2019-07-09 | 2019-10-11 | 中国航发哈尔滨东安发动机有限公司 | A kind of weak rigid casing repair method of aviation |
| CN112705905A (en) * | 2021-01-08 | 2021-04-27 | 成都国营锦江机器厂 | Method for repairing BP-14 main reducer driven spiral bevel gear assembly |
| CN112705905B (en) * | 2021-01-08 | 2022-11-18 | 成都国营锦江机器厂 | Method for repairing BP-14 main reducer driven spiral bevel gear assembly |
| CN113352051A (en) * | 2021-06-24 | 2021-09-07 | 中国民用航空飞行学院 | Piston type aeroengine casing joint surface repairing method |
| CN113977192A (en) * | 2021-11-01 | 2022-01-28 | 安徽应流航源动力科技有限公司 | Method for machining datum hole of cartridge receiver without tool |
| CN113977192B (en) * | 2021-11-01 | 2024-02-20 | 安徽应流航源动力科技有限公司 | Method for machining reference hole without tool for casing |
| CN115041914A (en) * | 2022-06-21 | 2022-09-13 | 湖南南方通用航空发动机有限公司 | Method for repairing inner hole of casing and casing |
| CN115041914B (en) * | 2022-06-21 | 2023-08-01 | 中国航发南方工业有限公司 | Repairing method for inner hole of casing and casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106493503B (en) | 2019-02-12 |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |