CN107962354A - A kind of processing technology of opposite opened casing - Google Patents
A kind of processing technology of opposite opened casing Download PDFInfo
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- CN107962354A CN107962354A CN201711187574.4A CN201711187574A CN107962354A CN 107962354 A CN107962354 A CN 107962354A CN 201711187574 A CN201711187574 A CN 201711187574A CN 107962354 A CN107962354 A CN 107962354A
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- milling
- casing
- face
- opposite opened
- finish
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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
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- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The present invention relates to a kind of processing technology of opposite opened casing, using segmentation principle, using the process route of the single processing of opposite opened casing, the technological datum of Milling Machining changes into the positioning of three datum planes by cylindrical surface and hole localization method, the quantity of finish-milling operation allowance and process turnover is reduced, improves centering efficiency；The process route of the single processing of opposite opened casing is：Checked, rule on woollen；Milling machine casket big end positioning reference plane；The faying face of each casing of milling；Rough mill casing external form；Bore boring combination face；Two casings are subjected to pre-assembled, rough turn inner mold face；Two casings are decomposed, the faying face of two casing of finish-milling, boring combination face and milling top planes；Two casings are formally assembled；Half smart car inner mold face, bores angular hole, finish-milling external form, car big end benchmark, smart car inner mold, bores boring end-face hole and radial hole.The method of the present invention solves the problem that finish-milling external form surplus is uneven, part deformation is big, realizes the high-efficiency high-quality processing of opposite opened casing.
Description
Technical field
The present invention relates to a kind of aero-engine casing processing technology, is specially a kind of processing technology side of opposite opened casing
Method.
Background technology
2 forging part woollens of Split Casing in Aeroengine generally use, are installed by reserved technique edges bolt presses
Into an entirety, remove technique edges again after overall progress roughing.
At present, Split Casing processing route main contents are as follows：
Woollen-inspection line-milling large end face-milling faying face-brill boring faying face fabrication hole-milling faying face nest-assembling-is rough turn
Rough mill the longitudinally mounted Bian of external form-decomposition-milling-car big end benchmark-finish-milling faying face-milling top in inner mold face-drill and ream front end positioning face-
The angular location hole of the smart car of datum level-half inner mold-boring-finish-milling external form-big end group of car after plane-brill boring combination face-assembling-car
Quasi- smart car inner mold-brill boring end-face hole and radial hole.
Unilateral reserve is 2.5mm to finish-milling operation allowance before improvement in theory, after being performed by above-mentioned process route, due to
Deformation of joint surface influences after faying face removes surplus and roughing, and it is 1.5mm~3.5mm that finish-milling operation allowance is actually unilateral.
In this process, the surplus that part and woollen are reserved is larger, causes finish-milling process outer mold surface surplus uneven, shadow
Ring the processing efficiency and quality of part.And the technological datum generally use cylindrical surface of Milling Machining and angular hole positioning, cylindrical surface and
Angular hole machined precision is high, and there are rigging error, alignment time are longer with fixture cooperation for part.
The content of the invention
Uneven, the shadow for finish-milling process outer mold surface surplus in Split Casing in Aeroengine process in the prior art
Ring part processing efficiency and quality the deficiencies of, the technical problem to be solved in the present invention is to provide one kind can reduce part deformation,
Realize the processing technology of the opposite opened casing of opposite opened casing high-efficiency high-quality processing.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of processing technology of opposite opened casing of the present invention, using segmentation principle, adds using opposite opened casing is single
The process route of work, the technological datum of Milling Machining change into the positioning of three datum planes by original cylindrical surface and hole localization method,
The quantity of finish-milling operation allowance and process turnover is reduced, improves centering efficiency.
The process route of the single processing of opposite opened casing is：
Checked, rule on woollen；
Milling machine casket big end positioning reference plane；The faying face of each casing of milling
Rough mill casing external form；Bore boring combination face；
Two casings are subjected to pre-assembled, rough turn inner mold face；
Two casings are decomposed, the faying face of two casing of finish-milling, boring combination face and milling top planes；
Two casings are formally assembled；
Half smart car inner mold face, bores angular hole, finish-milling external form, car big end benchmark, smart car inner mold, bores boring end-face hole and radial direction
Hole.
Three datum plane is positioned as：
Using three planes of big end on part as datum level, determine the part centre of gyration, positioned in milling machine casket big end
In the process of benchmark, complete the processing of three datum levels, ensure X to radius of gyration size and Y-direction radius of gyration size, rough mill to
Finish-milling reserves 2mm surpluses.
During the single Milling Machining of opposite opened casing, using the fixture of i.e. three datum level adjective-centre structures of three planes, ensure folder
The centre of gyration of tool in part and fixture positioning assembling process, ensures part and fixture on the center line of three datum levels
The centre of gyration overlap.
The invention has the advantages that and advantage：
1. the present invention applies the segmentation principle in TRIZ theories, by the process route of traditional opposite opened casing Combined machining
The process route of the single processing of opposite opened casing is changed into, the technological datum of Milling Machining is by original cylindrical surface and hole localization method
Three datum plane localization methods are changed into, the problem that finish-milling external form surplus is uneven, part deformation is big is solved, reduces finish-milling process
Surplus and the quantity of process turnover, improve centering efficiency, it is achieved thereby that the high-efficiency high-quality processing of opposite opened casing.
2. the present invention substantially reduces process week using the single mechanical processing of Split Casing i.e. point semi-finished process
The quantity turned, makes the finish-milling surplus of Milling Machining more uniform, reduces the generation of residual stress in processing, has better controled over zero
The deformation of part, realize ensure casing processing quality on the premise of, improve processing efficiency, the technology Split Casing processing in have compared with
Good application prospect.
3. the method for the present invention can save the reserved of technique edges, the surplus of outer mold surface can reserve very little, have preferable
Quality and economic benefit.
Brief description of the drawings
Fig. 1 is the process schematic representation of the single processing of opposite opened casing of the present invention.
Wherein, 1 is the first datum level of big end, and 2 be the second datum level of big end, and 3 be the 3rd datum level of big end, and 4 be faying face,
5 be the part centre of gyration, and 6 be opposite opened casing, and 7 be small end top planes.
Embodiment
With reference to Figure of description, the present invention is further elaborated.
A kind of processing technology of opposite opened casing of the present invention, using segmentation principle, adds using opposite opened casing is single
The process route of work, the technological datum of Milling Machining change into the positioning of three datum planes by original cylindrical surface and hole localization method,
The quantity of finish-milling operation allowance and process turnover is reduced, improves centering efficiency.
The process route of the single processing of opposite opened casing is：
Checked, rule on woollen；
Milling machine casket big end positioning reference plane, i.e. (outside of casing big end lower part one is flat for the first datum level of big end 1 in Fig. 1
Face), the second datum level of big end 2 (another medial plane of casing big end lower part) and 3 (casing big end top of the 3rd datum level of big end
Facial planes)；The faying face 4 of each casing of milling；
Rough mill casing external form；Bore boring combination face；Two casings are subjected to pre-assembled, rough turn inner mold face；
Two casings are decomposed, the faying face of two casing of finish-milling, boring combination face and milling top planes；
Two casings are formally assembled；
Half smart car inner mold face, bores angular hole, finish-milling external form, car big end benchmark, smart car inner mold, bores boring end-face hole and radial direction
Hole.
In the present embodiment, the technological datum design and surplus of the single Milling Machining of opposite opened casing, using three on part
Plane determines the part centre of gyration, in the process of milling machine casket big end positioning datum, completes the first datum level of big end 1, the second base of big end
Quasi- face 2 and the processing in the 3rd datum level 3 of big end, ensure X to the size A of the radius of gyration, the size B of the Y-direction radius of gyration,
As shown in Figure 1, rough milling 2mm surpluses are reserved to finish-milling.
The fixture design of the single Milling Machining of opposite opened casing, in fixture design process, using three faces (i.e. three benchmark
Face) centering structure, ensure the centre of gyration of fixture on the center line in three faces, part and fixture positioning assembling process in,
Ensure that part is overlapped with the centre of gyration of fixture.
Unilateral reserve is 2mm to the improved finish-milling operation allowance of the present invention in theory, after being performed by above-mentioned process route,
It is 2mm that finish-milling operation allowance is actually unilateral.
The method of the present invention can be applied to the development of aero-engine opposite opened casing, using a point technique road for half mechanical processing
Line, substantially reduces the quantity of process turnover, makes the finish-milling surplus of Milling Machining more uniform, reduces residual stress in processing
Produce, better controled over the deformation of part, realize on the premise of ensureing casing processing quality, improve processing efficiency, the technology
There is preferable application prospect in Split Casing processing.
Claims (4)
- A kind of 1. processing technology of opposite opened casing, it is characterised in that：It is single using opposite opened casing using segmentation principle The process route of processing, the technological datum of Milling Machining are changed into three datum planes by original cylindrical surface and hole localization method and are determined Position, reduces the quantity of finish-milling operation allowance and process turnover, improves centering efficiency.
- 2. the processing technology of opposite opened casing according to claim 1, it is characterised in that：The opposite opened casing list The process route of a processing is：Checked, rule on woollen；Milling machine casket big end positioning reference plane；The faying face of each casing of millingRough mill casing external form；Bore boring combination face；Two casings are subjected to pre-assembled, rough turn inner mold face；Two casings are decomposed, the faying face of two casing of finish-milling, boring combination face and milling top planes；Two casings are formally assembled；Half smart car inner mold face, bores angular hole, finish-milling external form, car big end benchmark, smart car inner mold, bores boring end-face hole and radial hole.
- 3. the processing technology of opposite opened casing according to claim 1, it is characterised in that：Three datum plane is determined Position is：Using three planes of big end on part as datum level, the part centre of gyration is determined, in milling machine casket big end positioning datum Process in, complete three datum levels processing, ensure X to radius of gyration size and Y-direction radius of gyration size, rough mill to finish-milling Reserved 2mm surpluses.
- 4. the processing technology of opposite opened casing according to claim 1, it is characterised in that：The single milling of opposite opened casing During processing, using the fixture of i.e. three datum level adjective-centre structures of three planes, ensure the centre of gyration of fixture in three datum levels Center line on, part and fixture positioning assembling process in, ensure part overlapped with the centre of gyration of fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187574.4A CN107962354A (en) | 2017-11-24 | 2017-11-24 | A kind of processing technology of opposite opened casing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711187574.4A CN107962354A (en) | 2017-11-24 | 2017-11-24 | A kind of processing technology of opposite opened casing |
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| CN107962354A true CN107962354A (en) | 2018-04-27 |
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| CN201711187574.4A Pending CN107962354A (en) | 2017-11-24 | 2017-11-24 | A kind of processing technology of opposite opened casing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604950A (en) * | 2018-12-06 | 2019-04-12 | 重庆天骄航空动力有限公司 | A kind of processing method of aero-engine casing |
| CN110064897A (en) * | 2019-04-30 | 2019-07-30 | 中国航发南方工业有限公司 | Aviation components spinning part blank machining process |
| CN110465783A (en) * | 2019-08-21 | 2019-11-19 | 无锡市润和机械有限公司 | A kind of processing method of aero-engine pin-connected panel cylinder casing |
| CN110919045A (en) * | 2019-11-13 | 2020-03-27 | 中国航发南方工业有限公司 | Method for processing coaxial precise inclined hole of thin-wall titanium alloy casing |
| CN110936108A (en) * | 2019-11-19 | 2020-03-31 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining method for improving assembly precision of thin-wall annular casing type parts |
| CN111664123A (en) * | 2020-06-05 | 2020-09-15 | 中国航发沈阳发动机研究所 | Stator structure and machining and assembling method thereof |
| CN112496418A (en) * | 2020-11-17 | 2021-03-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Four-coordinate efficient milling method for split casing conical outer profile structure |
| CN115178980A (en) * | 2022-08-04 | 2022-10-14 | 中国航发南方工业有限公司 | Machining method of guide vane casing |
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| JPS56162300A (en) * | 1980-05-16 | 1981-12-14 | Hitachi Ltd | Manufacture of casing for gas-turbine compressor |
| DE102007018518A1 (en) * | 2007-04-19 | 2008-10-23 | Denso-Holding Gmbh & Co | Casing manufacturing device for tubular construction unit, has sheeting element designed from set of structures, and retaining unit arranged in region of each of longitudinal sides, with which connection to guiding units is manufacturable |
| CN102927952A (en) * | 2012-06-26 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for detecting diameter of outer wall of tapered case of aviation engine on line |
| CN103286525A (en) * | 2012-03-02 | 2013-09-11 | 沈阳黎明航空发动机(集团)有限责任公司 | Numerical control machining method for large thin-walled split casing of die forging |
| CN103769816A (en) * | 2014-01-15 | 2014-05-07 | 西安航空动力股份有限公司 | Processing method for stop plate-free split casing |
| CN104400594A (en) * | 2014-10-28 | 2015-03-11 | 西安航空动力股份有限公司 | Aeroengine weak rigidity cartridge receiver electron beam welding seam automatic grinding method |
| CN106774143A (en) * | 2016-11-29 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of high temperature alloy aviation Split Casing five-shaft high-speed milling method |
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2017
- 2017-11-24 CN CN201711187574.4A patent/CN107962354A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56162300A (en) * | 1980-05-16 | 1981-12-14 | Hitachi Ltd | Manufacture of casing for gas-turbine compressor |
| DE102007018518A1 (en) * | 2007-04-19 | 2008-10-23 | Denso-Holding Gmbh & Co | Casing manufacturing device for tubular construction unit, has sheeting element designed from set of structures, and retaining unit arranged in region of each of longitudinal sides, with which connection to guiding units is manufacturable |
| CN103286525A (en) * | 2012-03-02 | 2013-09-11 | 沈阳黎明航空发动机(集团)有限责任公司 | Numerical control machining method for large thin-walled split casing of die forging |
| CN102927952A (en) * | 2012-06-26 | 2013-02-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for detecting diameter of outer wall of tapered case of aviation engine on line |
| CN103769816A (en) * | 2014-01-15 | 2014-05-07 | 西安航空动力股份有限公司 | Processing method for stop plate-free split casing |
| CN104400594A (en) * | 2014-10-28 | 2015-03-11 | 西安航空动力股份有限公司 | Aeroengine weak rigidity cartridge receiver electron beam welding seam automatic grinding method |
| CN106774143A (en) * | 2016-11-29 | 2017-05-31 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of high temperature alloy aviation Split Casing five-shaft high-speed milling method |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604950A (en) * | 2018-12-06 | 2019-04-12 | 重庆天骄航空动力有限公司 | A kind of processing method of aero-engine casing |
| CN110064897A (en) * | 2019-04-30 | 2019-07-30 | 中国航发南方工业有限公司 | Aviation components spinning part blank machining process |
| CN110465783A (en) * | 2019-08-21 | 2019-11-19 | 无锡市润和机械有限公司 | A kind of processing method of aero-engine pin-connected panel cylinder casing |
| CN110919045A (en) * | 2019-11-13 | 2020-03-27 | 中国航发南方工业有限公司 | Method for processing coaxial precise inclined hole of thin-wall titanium alloy casing |
| CN110936108A (en) * | 2019-11-19 | 2020-03-31 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining method for improving assembly precision of thin-wall annular casing type parts |
| CN110936108B (en) * | 2019-11-19 | 2022-05-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Machining method for improving assembly precision of thin-wall annular casing type parts |
| CN111664123A (en) * | 2020-06-05 | 2020-09-15 | 中国航发沈阳发动机研究所 | Stator structure and machining and assembling method thereof |
| CN112496418A (en) * | 2020-11-17 | 2021-03-16 | 中国航发沈阳黎明航空发动机有限责任公司 | Four-coordinate efficient milling method for split casing conical outer profile structure |
| CN115178980A (en) * | 2022-08-04 | 2022-10-14 | 中国航发南方工业有限公司 | Machining method of guide vane casing |
| CN115178980B (en) * | 2022-08-04 | 2023-12-01 | 中国航发南方工业有限公司 | Guide vane casing machining method |
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Application publication date: 20180427 |