CN102513803B - Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp - Google Patents
Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp Download PDFInfo
- Publication number
- CN102513803B CN102513803B CN 201110398290 CN201110398290A CN102513803B CN 102513803 B CN102513803 B CN 102513803B CN 201110398290 CN201110398290 CN 201110398290 CN 201110398290 A CN201110398290 A CN 201110398290A CN 102513803 B CN102513803 B CN 102513803B
- Authority
- CN
- China
- Prior art keywords
- casing
- rear end
- pressing plate
- locating piece
- halves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The invention provides a technical method for constructing a reference surface of an assembled folio cartridge receiver and a special clamp. The special clamp comprises a base, pressing plates, adjustable supports, support screws and two sets of positioning components, wherein each positioning component comprises a front-end positioning block, a front-end hook-shaped pressing plate, a connection block, a rear-end positioning block and a rear-end hook-shaped pressing plate; and the two sets of positioning components are in centrosymmetry about a central axis of the base. The technical process comprises the following steps of: performing rough turning machining on an annular blank of the folio cartridge receiver, retaining flange edges, splitting the annular piece of the cartridge receiver, cutting off the flange edges on different sides, fixing two half cartridge receivers on the special clamp, and constructing the reference surface of the assembled folio cartridge receiver by adjusting the clamp. Compared with the conventional method, the technical method has the advantages that: the technical requirement of the whole machining flow is easy to realize; the whole machining flow can be finished on the vertical lathe; the machining efficiency is high; and the reference surface of the folio cartridge receiver is machined during one-time clamping.
Description
Technical field
The present invention relates to the Machining Technology field, be specially a kind of be used to splitting the upright normative process in back of casing group and special fixture.
Background technology
Split casing and use integral ring-shaped and semicircle (forging or casting) two kinds of woolen cloths usually.For the integral ring-shaped woolen cloth of use, precision during regardless of its roughing, after cutting open, the two halves casing can produce certain distortion, must process faying face (incision face), to guarantee the flatness of its faying face; Semicircle woollen after processing necessary benchmark, also must process faying face, to guarantee the flatness of its faying face.Fallen surplus owing to faying face is processed, and the processing capacity of per half casing is inconsistent, when faying face carries out bore hole, casing is by after upright in conjunction with the face group, do not had and the machining benchmark that has relatively accurate relation in conjunction with the plane, before carrying out following process, must rebulid benchmark, found the faying face of rear housing with the assurance group by its pivot and symmetrical centre and vertical cross-section.
The existing normative process in the upright back of casing group of splitting is: before group is upright, the two halves casing is bored datum level at horizontal boring machine respectively, the upright frock of utilization group is organized upright machining benchmark after upright with the foundation group, can occur the secondary clamping like this benchmark of part is caused error, and its working (machining) efficiency is low, require enough big horizontal boring machines of special tooling and specification, the production in enormous quantities of splitting casing is restricted, be necessary to design a kind of new benchmark and set up process.
Summary of the invention
The technical problem that solves
For solving the problem that prior art exists, the present invention proposes a kind of be used to splitting the upright normative process in back of casing group and special fixture.
Technical scheme
Technical scheme of the present invention is:
Described a kind of be used to splitting the normative special fixture in the upright back of casing group, it is characterized in that: comprise base, pressing plate, adjustable support, supporting nail and two cover positioning components; Base is the annular plate-like structure, and pressing plate, adjustable support and supporting nail along the circumferential direction are evenly arranged on the stationary plane of base; Positioning component comprises front end locating piece, front end hook-type pressing plate, contiguous block, rear end locating piece and rear end hook-type pressing plate; The front end locating piece is L shaped structure; Contiguous block is platy structure, contiguous block one end is fixedlyed connected with base, the other end is fixedlyed connected with an end arm face of the L shaped structure of front end locating piece, and front end hook-type pressing plate inserts in the end face of the L shaped structure other end of front end locating piece arm, and forms space, front end location with the front end locating piece; The rear end locating piece is platy structure, fit in rear end locating piece one side side and contiguous block side, and locating piece one end in rear end is fixedlyed connected with base, is inserted with rear end hook-type pressing plate on the locating piece opposite side side, rear end, and rear end hook-type pressing plate and rear end locating piece form space, location, rear end; Two cover positioning components are with respect to base central axis center symmetry; Locating surface in locating surface in the space, front end location on the front end locating piece and the space, location, rear end on the locating piece of rear end overlaps, and the base central axis is crossed on the coincidence plane.
Described a kind of be used to splitting the normative process in the upright back of casing group, it is characterized in that: may further comprise the steps:
Step 1: the annular woolen cloth of splitting casing is carried out rough turn processing, and respectively leave a circle technological datum piece at the woollen lateral surface of annular near place, annular woollen two ends; Two circle technological datum pieces are carried out groove milling processing, and each forms the flange of two same thickness, and the longitudinal center line of four flanges is in the same plane, and the woollen central axis of annular is crossed on this plane;
Step 2: will cut open along the plane that four flange longitudinal center lines form through the casing annular element that obtains after step 1 processing, two flanges of homonymy not on the mill off two halves casing respectively make on half casing remaining two flanges on remaining two flanges and second half casing be in the not homonymy of casing annular element central axis; Faying face to each half casing mills processing and scraping processing, makes the faying face of each half casing and two flange locating surfaces in the same plane;
Step 3: will be placed on the special fixture through the two halves casing after step 2 processing, support the two halves casing by the supporting nail, and the flange on the two halves casing is inserted in the front end space, location and space, location, rear end of two cover positioning components on the special fixture; Regulate adjustable support, make the flange locating surface corresponding closely sturdy with the locating surface on the positioning component, and by beating the faying face of table centering two halves casing, make the faying face of two halves casing at grade;
Step 4: the faying face to the two halves casing carries out bore hole processing, and by regulating the relative position of two halves casing, make the central axes of corresponding aperture on the two halves casing faying face, and be pressed in front end space, location and the space, location, rear end by front end hook-type pressing plate and the rear end hook-type pressing plate flange with the two halves casing; Regulate adjustable support again, make the flange locating surface corresponding closely sturdy with the locating surface on the positioning component; Unclamp front end hook-type pressing plate and rear end hook-type pressing plate, and with pressing plate the two halves casing is fixed on the base;
Step 5: level and the cylindrical datum level after the casing group is stood split in processing.
Beneficial effect
The a kind of of the present invention's proposition in contrast to existing method be used to splitting the upright normative process in back of casing group and special fixture, whole process technological requirement realizes easily, on vertical lathe, can finish, and the working (machining) efficiency height, make and split the casing machining benchmark and in a clamping, finish, it is easy to operate to add the man-hour workman simultaneously, and anchor clamps compress reliably, and are rationally distributed, compact conformation, firm, easy to use, safeguard simply low cost of manufacture.
Description of drawings
Fig. 1: the structural representation of special fixture;
Fig. 2: annular woolen cloth processes the structural representation behind the flange;
The A-A cutaway view of Fig. 3: Fig. 2;
Fig. 4: the structural representation behind half casing mill off one side flange limit;
Fig. 5: the structural representation behind second half casing mill off opposite side flange;
Fig. 6: front end locating piece structural representation;
Fig. 7: front end hook-type pressure plate structure schematic diagram;
Fig. 8: rear end hook-type pressure plate structure schematic diagram;
Wherein: 1, base; 2, pressing plate; 3, adjustable support; 4, supporting nail; 5, front end locating piece; 6, contiguous block; 7, rear end locating piece; 8, rear end hook-type pressing plate; 9, front end hook-type pressing plate; 10, front end flange limit; 11, rear end flange; The front end locating surface of a, first positioning component; The rear end locating surface of b, first positioning component; The front end locating surface of c, second positioning component; The rear end locating surface of d, second positioning component; The front end flange limit locating surface of a ', the first half casings; The rear end flange locating surface of b ', the first half casings; The front end flange limit locating surface of c ', the second half casings; The rear end flange locating surface of d ', the second half casings.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described:
Present embodiment is processed at splitting casing annular woolen cloth.
Step 1: the annular woolen cloth of splitting casing is carried out rough turn processing, and respectively to leave a circle axial width at the woollen lateral surface of annular near place, annular woollen two ends be the technological datum piece of 12mm; Then two circle technological datum pieces are carried out groove milling processing, the flange that to leave two circumferential thickness after the every circle technological datum piece groove milling processing be 20mm, as shown in Figure 2, the longitudinal center line of four flanges is in the same plane, and the woollen central axis of annular is crossed on this plane.Fig. 3 has provided the cutaway view of casing annular element one side that obtains after the processing, and wherein front end flange limit 10 is the flange that retain a circle technological datum piece groove milling processing back, the flange that rear end flange 11 is retained for another circle technological datum piece groove milling processing back.
Step 2: will cut open along the planar line cutting that four flange longitudinal center lines form through the casing annular element that obtains after step 1 processing.After the casing annular element is cut open, two flanges of homonymy not on the mill off two halves casing respectively, make on half casing remaining two flanges on remaining two flanges and second half casing be in the not homonymy of casing annular element central axis, as shown in Figure 4 and Figure 5; Then the faying face to each half casing mills processing and scraping processing, make faying face and two flange locating surfaces of each half casing in the same plane, so, after two halves casing group is upright, the faying face of casing and four flange locating surfaces were just in the same plane.
Step 3: with the special fixture centering.
Comprise base 1,8 pressing plates 2,14 adjustable supports 3,4 supporting nail 4 and two cover positioning components with reference to accompanying drawing 1 described special fixture.Base is the annular plate-like structure, and pressing plate, adjustable support and supporting nail along the circumferential direction are evenly arranged in respectively on the stationary plane of base.
Positioning component comprises front end locating piece 5, front end hook-type pressing plate 9, contiguous block 6, rear end locating piece 7 and rear end hook-type pressing plate 8.As shown in Figure 6, the front end locating piece is L shaped structure.Contiguous block is platy structure, contiguous block one end is fixedlyed connected with bolt of lower base, the other end is connected with an end arm face bolting of the L shaped structure of front end locating piece, front end hook-type pressing plate inserts in the through hole of the L shaped structure other end of front end locating piece arm end face, and front end hook-type pressing plate and front end locating piece screw thread are fixed.Form space, front end location between the hook-type position of front end hook-type pressing plate and the front end locating piece end face, front end locating piece end face is the front end locating surface here.The rear end locating piece is platy structure, fit in rear end locating piece one side side and contiguous block side, and locating piece one end in rear end is fixedlyed connected with bolt of lower base, be inserted with rear end hook-type pressing plate on the locating piece opposite side side, rear end, rear end hook-type pressing plate is threaded with the rear end locating piece, form space, location, rear end between the hook-type position of rear end hook-type pressing plate and the locating piece side, rear end, locating piece side in rear end is the rear end locating surface here.
Two cover positioning components are with respect to base central axis center symmetry, and the front end locating surface on two groups of positioning components overlaps with the rear end locating surface, and the base central axis is crossed on the coincidence plane.
After will being placed on the special fixture through the two halves casing after step 2 processing, support the two halves casing by the supporting nail, and the flange on the two halves casing is inserted in the front end space, location and space, location, rear end of two cover positioning components on the special fixture.By regulating adjustable support, make flange locating surface a ', b ', c ', the locating surface a on d ' and the positioning component, b, c, the d correspondence is closely sturdy, and detects with clearance gauge.By beating the faying face of table centering two halves casing, make the faying face of two halves casing at grade.
Step 4: the faying face to the two halves casing carries out bore hole processing, and by regulating the relative position of two halves casing, make the central axes of corresponding aperture on the two halves casing faying face, and by screwing front end hook-type pressing plate and rear end hook-type pressing plate the flange of two halves casing is pressed in front end space, location and the space, location, rear end; Regulate adjustable support again, make the flange locating surface corresponding closely sturdy with the locating surface on the positioning component; Unscrew front end hook-type pressing plate and rear end hook-type pressing plate, and with pressing plate the two halves casing of naming a person for a particular job be pressed abd fixed on the base, note beating table during clamping platen, show inactive, to determine that locating surface is sturdy bottom adjustable support and the two halves casing.
Step 5: level and the cylindrical datum level after the casing group is stood split in processing, thereby the faying face of the upright rear housing of realization group passes through in its pivot and the plane perpendicular to clamp base, and realized that subsequent handling adds the foundation of locating benchmark man-hour.
As seen, whole process technological requirement realizes easily, on vertical lathe, can finish, and the working (machining) efficiency height, the part processing benchmark is finished in a clamping, it is easy to operate to add the man-hour workman simultaneously, and anchor clamps compress reliably, and are rationally distributed, compact conformation, firm, easy to use, safeguard simply low cost of manufacture.
Claims (2)
1. one kind is used for splitting the normative special fixture in the upright back of casing group, it is characterized in that: comprise base, pressing plate, adjustable support, supporting nail and two cover positioning components; Base is the annular plate-like structure, and pressing plate, adjustable support and supporting nail along the circumferential direction are evenly arranged on the stationary plane of base; Positioning component comprises front end locating piece, front end hook-type pressing plate, contiguous block, rear end locating piece and rear end hook-type pressing plate; The front end locating piece is L shaped structure; Contiguous block is platy structure, contiguous block one end is fixedlyed connected with base, the other end is fixedlyed connected with an end arm face of the L shaped structure of front end locating piece, and front end hook-type pressing plate inserts in the end face of the L shaped structure other end of front end locating piece arm, and forms space, front end location with the front end locating piece; The rear end locating piece is platy structure, fit in rear end locating piece one side side and contiguous block side, and locating piece one end in rear end is fixedlyed connected with base, is inserted with rear end hook-type pressing plate on the locating piece opposite side side, rear end, and rear end hook-type pressing plate and rear end locating piece form space, location, rear end; Two cover positioning components are with respect to base central axis center symmetry; Locating surface in locating surface in the space, front end location on the front end locating piece and the space, location, rear end on the locating piece of rear end overlaps, and the base central axis is crossed on the coincidence plane.
2. one kind is used for splitting the normative process in the upright back of casing group, it is characterized in that: may further comprise the steps:
Step 1: the annular woolen cloth of splitting casing is carried out rough turn processing, and respectively leave a circle technological datum piece at the woollen lateral surface of annular near place, annular woollen two ends; Two circle technological datum pieces are carried out groove milling processing, and each forms the flange of two same thickness, and the longitudinal center line of four flanges is in the same plane, and the woollen central axis of annular is crossed on this plane;
Step 2: will cut open along the plane that four flange longitudinal center lines form through the casing annular element that obtains after step 1 processing, two flanges of homonymy not on the mill off two halves casing respectively make on half casing remaining two flanges on remaining two flanges and second half casing be in the not homonymy of casing annular element central axis; Faying face to each half casing mills processing and scraping processing, makes the faying face of each half casing and two flange locating surfaces in the same plane;
Step 3: will be placed on the special fixture through the two halves casing after step 2 processing, support the two halves casing by the supporting nail, and the flange on the two halves casing is inserted in the front end space, location and space, location, rear end of two cover positioning components on the special fixture; Regulate adjustable support, make the flange locating surface corresponding closely sturdy with the locating surface on the positioning component, and by beating the faying face of table centering two halves casing, make the faying face of two halves casing at grade;
Step 4: the faying face to the two halves casing carries out bore hole processing, and by regulating the relative position of two halves casing, make the central axes of corresponding aperture on the two halves casing faying face, and be pressed in front end space, location and the space, location, rear end by front end hook-type pressing plate and the rear end hook-type pressing plate flange with the two halves casing; Regulate adjustable support again, make the flange locating surface corresponding closely sturdy with the locating surface on the positioning component; Unclamp front end hook-type pressing plate and rear end hook-type pressing plate, and with pressing plate the two halves casing is fixed on the base;
Step 5: level and the cylindrical datum level after the casing group is stood split in processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110398290 CN102513803B (en) | 2011-12-03 | 2011-12-03 | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110398290 CN102513803B (en) | 2011-12-03 | 2011-12-03 | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102513803A CN102513803A (en) | 2012-06-27 |
| CN102513803B true CN102513803B (en) | 2013-08-14 |
Family
ID=46285010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110398290 Active CN102513803B (en) | 2011-12-03 | 2011-12-03 | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102513803B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264251B (en) * | 2013-05-24 | 2015-02-04 | 哈电集团（秦皇岛）重型装备有限公司 | Fixing device for transposition bead welding of vapor generator tube plate on position changing machine |
| CN103481084A (en) * | 2013-09-13 | 2014-01-01 | 沈阳黎明航空发动机(集团)有限责任公司 | Multi-function positioning clamping method for machining receivers |
| CN103551828B (en) * | 2013-10-25 | 2016-06-29 | 苏州工业园区得意机电设备有限公司 | A kind of deformation amount controlling method of multiaspect thin-wall box body part processing |
| CN105127530B (en) * | 2013-12-09 | 2017-10-17 | 中国航发常州兰翔机械有限责任公司 | A kind of linear cutting clamp |
| CN103624352B (en) * | 2013-12-09 | 2016-06-22 | 常州兰翔机械有限责任公司 | A kind of installation limit linear cutting clamp |
| CN104359594B (en) * | 2014-11-10 | 2017-07-25 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of system of selection of the longitudinally mounted side position of Split Casing |
| US20170056980A1 (en) * | 2015-08-24 | 2017-03-02 | General Electric Company | Fixture for securing component to be drilled and method of drilling same |
| CN105290737A (en) * | 2015-11-20 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Machining method for casing casting part |
| CN106271801B (en) * | 2016-08-31 | 2018-11-02 | 中航动力股份有限公司 | A kind of aligning method and its fixture that part is angular |
| CN107020572B (en) * | 2017-06-02 | 2019-02-15 | 中国航发南方工业有限公司 | General grinder fixture |
| CN107649709B (en) * | 2017-08-31 | 2019-03-01 | 中国航发航空科技股份有限公司 | For containing the device of the split binding face processing of casing outside aero-engine |
| CN108145382B (en) * | 2017-12-18 | 2022-07-05 | 中国航发贵州黎阳航空动力有限公司 | Rapid positioning and machining method for accessory case |
| CN107984177B (en) * | 2017-12-19 | 2019-09-03 | 中国航发南方工业有限公司 | Split Casing simulating piece processing method |
| CN108723121B (en) * | 2018-05-30 | 2019-12-31 | 中国航发动力股份有限公司 | High-temperature alloy split casing calibration device and calibration method thereof |
| CN109500595B (en) * | 2018-11-30 | 2020-08-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Riveting device and method for locking and supporting casing assembly and bushing assembly |
| CN112211684B (en) * | 2019-07-11 | 2022-09-06 | 中国航发商用航空发动机有限责任公司 | Casing installation method |
| 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 |
| CN112207397B (en) * | 2020-09-23 | 2021-11-02 | 中国航发贵州黎阳航空动力有限公司 | Clamp for welding longitudinal flange edge to casing and welding method thereof |
| CN112192127B (en) * | 2020-09-29 | 2022-04-08 | 中国航发动力股份有限公司 | Assembly welding device |
| CN113579816B (en) * | 2021-06-23 | 2022-09-06 | 北京实验工厂有限责任公司 | Clamping device for machining high-precision sealing ring groove of actuating cylinder part |
| CN117020239B (en) * | 2023-10-10 | 2023-12-08 | 中国航发沈阳黎明航空发动机有限责任公司 | Technological method for improving utilization rate of burrs of T-shaped plate part of aero-engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8292282B2 (en) * | 2008-12-05 | 2012-10-23 | GM Global Technology Operations LLC | Flexible support assembly for vehicle tooling plates |
| CN201579603U (en) * | 2009-10-14 | 2010-09-15 | 哈尔滨东安华孚机械制造有限公司 | Numerical controlling, machining and locating, and clamping device for elongator case behind automobile engine |
| CN102069109B (en) * | 2010-11-04 | 2013-01-16 | 西安航空动力股份有限公司 | Correction device and correction method for inner ring of engine crankcase |
| CN102069399A (en) * | 2010-12-29 | 2011-05-25 | 沈阳黎明航空发动机(集团)有限责任公司 | Clamping positioning method and device |
-
2011
- 2011-12-03 CN CN 201110398290 patent/CN102513803B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102513803A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102513803B (en) | Technical method for constructing reference surface of assembled folio cartridge receiver and special clamp | |
| CN203141156U (en) | Fast positioning device of machining bearing block of milling machine | |
| CN102284734B (en) | Method for processing key grooves of shaft | |
| CN201735864U (en) | Outfit for processing precise indexing inner wall hole of large annular workpiece | |
| CN102658458B (en) | Manufacturing method of pedestal bearing for turbocharger and positioning tool for same | |
| CN108480923B (en) | Method for precisely machining large thin-wall revolving body part | |
| CN102069399A (en) | Clamping positioning method and device | |
| CN202846211U (en) | Combination fixture special for machining keyways of shafts | |
| CN104889758A (en) | Universal fixture device and method for machining fan-shaped workpiece combinations | |
| CN109396894B (en) | Clamp body for machining intermediate casing surface and hole | |
| CN203665173U (en) | Inclined disc transmission shaft machining clamp | |
| CN201253758Y (en) | Fast transshipping chucking appliance for flange member | |
| CN103056614A (en) | Method for processing curved surface sector-shaped section frame | |
| CN109909694B (en) | Method for processing flange sealing surface of end part of multi-section tower type container by using boring mill | |
| CN205096901U (en) | Box processingequipment | |
| CN201537722U (en) | Lens barrel boring and processing device | |
| CN218017136U (en) | Rotary eccentric milling fixture | |
| CN102501085A (en) | Tool and method for processing bearing pedestal by using lathe | |
| CN202278402U (en) | Process equipment for machining bearing block by utilizing lathe | |
| CN102205498A (en) | Clamp special for surface milling of multiple parts | |
| CN201439129U (en) | Composite cutter holder for boring | |
| CN220362264U (en) | Milling groove clamping device for cylindrical workpiece | |
| CN216541931U (en) | Clamp for machining triangular scraper | |
| CN202668169U (en) | Tapping tool for slotted round nut | |
| CN213591758U (en) | Device for machining special-shaped shell by lathe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee after: AECC AVIATION POWER CO,LTD. Address before: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee before: AVIC AVIATION ENGINE Corp.,PLC Address after: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee after: AVIC AVIATION ENGINE Corp.,PLC Address before: 710021 Xu Jia Bay, Xi'an, Shaanxi, Beijiao Patentee before: XI'AN AVIATION POWER Co.,Ltd. |