CN109551273A - A kind of interior arc of carrying on the back of roughing blade goes surplus with indexable fixture - Google Patents
A kind of interior arc of carrying on the back of roughing blade goes surplus with indexable fixture Download PDFInfo
- Publication number
- CN109551273A CN109551273A CN201910043797.6A CN201910043797A CN109551273A CN 109551273 A CN109551273 A CN 109551273A CN 201910043797 A CN201910043797 A CN 201910043797A CN 109551273 A CN109551273 A CN 109551273A
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- China
- Prior art keywords
- indexable
- arc
- fixture
- block
- clamp body
- Prior art date
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Links
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a kind of interior arc of carrying on the back of roughing blade and goes surplus with indexable fixture, including bottom plate, V-block and indexable clamp body, indexable clamp body is cylindrical-shaped structure, V-type through slot is offered on indexable clamp body, arc connection wall is machined at the both ends of indexable clamp body, arc slotted hole is opened up in each arc connection wall, locating piece is equipped in one end of V-type through slot, threaded hole is offered on V-block, the position of arc slotted hole and the position of threaded hole are adapted, it is connect after arc slotted hole with threaded hole by bolt and indexable clamp body is fixed on V-block, a hold-down mechanism is respectively provided in the two sides of indexable clamp body, each hold-down mechanism includes pressing plate, briquetting and stud, stud both ends are connect with pressing plate and bottom plate respectively, one end of pressing plate is arranged in briquetting.The invention can be mounted on the position on fixture by change workpiece to realize the processing of the different air flue machining angle of blade.
Description
Technical field
The invention belongs to blade processing field, goes surplus with can turn more particularly, to arc is carried on the back in a kind of roughing blade
Position fixture.
Background technique
Turbine blade is the important component of steam turbine, and when roughing blade needs to remove a large amount of machining allowance, with
Toward experience using the modes such as scribing by bench worker, it is uneven to there is surplus, unstable product quality, and centering is time-consuming and laborious when processing,
The disadvantages of inefficiency.Now, during blade processing, especially blade blank material rough milling when, in order to save processing
Time improves production efficiency, usually rough mills blade blank material in common high-power milling machine by fixture clamping.However it is right
In the blade of different model, blade air flue angle is different, this allows for can not achieve not using a kind of fixture of fixation
Surplus roughing is gone with arc is carried on the back in the blade of model, a kind of every blade for processing model just needs a kind of fixture of suitable angle
Clamping processing, such fixture versatility is too low, frequently replaces fixture and is also unfavorable for processing, it is therefore necessary to design one kind
Suitable for the rough machined indexable fixture of different leaves air flue angle, the interior back arc of Lai Shixian different leaves goes surplus.
Summary of the invention
In view of this, the invention, which is directed to a kind of interior arc of carrying on the back of roughing blade, removes surplus indexable fixture, energy
It is enough that position on fixture is mounted on to realize that the processing request of the different air flue machining angle of blade, clamping are fast by change workpiece
Speed, accurate positioning and fixture versatility height.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
Back arc removes the indexable fixture of surplus in a kind of roughing blade, including be fixed on platen bottom plate,
The V-block being fixed on bottom plate and the indexable clamp body being arranged in the V-groove of V-block, the indexable clamp body are
Cylindrical-shaped structure is logical in the V-type that cylindrical-shaped structure surface offers placement blade workpiece along the axial direction of cylindrical-shaped structure
Slot is machined with arc connection wall at the both ends of indexable clamp body, is symmetrically opened up in each arc connection wall there are two arc
Shape slotted hole is equipped with the locating piece that limitation blade workpiece moves horizontally in one end of the V-type through slot of indexable clamp body, in V-type
The threaded hole matched with arc slotted hole is offered on two groove faces of the V-groove of block, arc slotted hole and threaded hole are one by one
It is correspondingly arranged, is connected after arc slotted hole with corresponding threaded hole by screw and indexable clamp body is fixed on V-type
On block, one is respectively provided with for compressing the hold-down mechanism of blade workpiece, each compacting machine in the two sides of indexable clamp body
Structure includes pressing plate, briquetting and the stud being vertically arranged, one end connection of the pressing plate and stud, the double end spiral shell
The other end of bolt is connect with bottom plate, and one end on pressing plate close to blade workpiece is arranged in the briquetting.
Further, it is equipped with supporting block in one end of the not set briquetting of each pressing plate, the supporting block
One end offsets with pressing plate lower surface, and the other end offsets with plate upper surface.
Further, two briquettings are copper billet, and each briquetting passes through Screw and is fixed on respective pressing plate
Lower surface.
Further, the pressing plate is equipped with slotted hole, and one end of stud successively connects after passing through lower nut, slotted hole
Connection pad piece and top nut.
Further, the locating piece is arranged two, is bolted on two groove faces of V-type through slot.
Further, the V-block is split type structure, and big small V-block, two small including two disposed in parallel etc.
The both ends of indexable clamp body are arranged in V-block.
Further, the angle of the V-groove of the V-block is 120 °, and the angle of the V-type through slot of indexable clamp body is
90°。
Further, the stud and back plate connections are equipped with the nut for fastening.
Further, the arc connection wall is 1/2-3/4 circular arc.
Further, the bottom plate is square plate, and is surrounded by mounting hole in bottom plate.
Compared with the existing technology, a kind of interior arc of carrying on the back of roughing blade described in the invention goes surplus with indexable fixture
It has the advantage that
A kind of interior arc of carrying on the back of roughing blade described in the invention removes the indexable fixture of surplus, can pass through and change work
Part be mounted on the position on fixture realize blade air flue to the processing request of different angle, specifically: blade workpiece is placed
After on the V-type through slot of indexable clamp body, the angle according to required by carrying on the back arc in blade workpiece to be processed rotates indexable folder
After the V-type through slot of indexable clamp body is specifically adjusted to respective angles, indexable clamp body is fixed on V-block, is realized
The change of workpiece angle；
A kind of interior arc of carrying on the back of roughing blade described in the invention removes the indexable fixture of surplus, has surplus removal equal
Even, batch machining dimensional uniformity is good, and clamping is quick, accurate positioning, and the non-cutting time for processing each part blade centering is short, improves life
Produce efficiency, increase benefit the advantages that, adapt to it is a variety of lead, the processing of movable vane piece.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is that a kind of interior arc of carrying on the back of roughing blade described in the invention embodiment removes the surplus knot of indexable fixture
Structure schematic diagram；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the K of Fig. 1 to side view；
Fig. 4 is the main view of Fig. 3.
Description of symbols:
1- bottom plate, 2-V type block, 201-V type groove, 202- threaded hole, the indexable clamp body of 3-, 301-V type through slot, 302- arc
Shape connection wall, 303- arc slotted hole, 4- stud, 5- pressing plate, 501- slotted hole, 6- briquetting, 7- blade workpiece, 8- positioning
Block, 9- top nut, 10- supporting block, 11- screw, 12- lower nut, 13- nut.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
As shown in Figure 1-Figure 3, back arc removes the indexable fixture of surplus in a kind of roughing blade, including is fixed on lathe worker
Make the bottom plate 1 on platform, the V-block 2 being fixed on bottom plate 1 and the indexable clamp body 3 being arranged in the V-groove 201 of V-block 2,
The indexable clamp body 3 is cylindrical-shaped structure, is offered on cylindrical-shaped structure surface along the axial direction of cylindrical-shaped structure
The V-type through slot 301 for placing blade workpiece 7, is machined with arc connection wall 302 at the both ends of indexable clamp body 3, each
Arc slotted hole 303 there are two symmetrically being opened up in arc connection wall 302, in one end of the V-type through slot 301 of indexable clamp body 3
Equipped with the locating piece 8 that moves horizontally of limitation blade workpiece 7, offered on two groove faces of the V-groove 201 of V-block 2 and arc
The threaded hole 202 that slotted hole 303 matches, threaded hole 202 are blind hole, and arc slotted hole 303 and the one-to-one correspondence of threaded hole 202 are set
It sets, is connected after arc slotted hole 303 with corresponding threaded hole 202 by screw 11 and indexable clamp body 3 is fixed on V
On type block 2, one is respectively provided with for compressing the hold-down mechanism of blade workpiece 7, each pressure in the two sides of indexable clamp body 3
Tight mechanism includes pressing plate 5, briquetting 6 and the stud 4 being vertically arranged, and the pressing plate 5 is connect with one end of stud 4,
The other end of the stud 4 is connect with bottom plate 1, and one end on pressing plate 5 close to blade workpiece 7 is arranged in the briquetting 6.
Supporting block 10, one end of the supporting block 10 are equipped in one end of the not set briquetting 6 of each pressing plate 5
It offsets with 5 lower surface of pressing plate, the other end offsets with 1 upper surface of bottom plate.
Two briquettings 6 are copper billet, and each briquetting 6 is fixed on the lower surface of respective pressing plate 5 by Screw.
Pressing plate 5 is equipped with slotted hole 501, and one end of stud 4 is sequentially connected after passing through lower nut 12, slotted hole 501
Gasket and top nut 9.
Locating piece 8 is arranged two, is bolted on two groove faces of V-type through slot 301, is used for locating blades work
The displacement of 7 horizontal direction of part.
V-block 2 is split type structure, the big small V-block such as including two disposed in parallel, and two small V-block setting exists
The both ends of indexable clamp body 3 are used to support indexable clamp body 3, mitigate the weight of entire fixture, are also convenient for processing.
The angle of the V-groove 201 of V-block 2 is 120 °, and the V-type angle of the V-type through slot 301 of indexable clamp body 3 is 90 °.
Stud 4 and 1 junction of bottom plate are equipped with the nut 13 for fastening, and arc connection wall 302 is 1/2-3/4 circle
Arc mitigates fixture overall weight.
Bottom plate 1 is square plate, and is surrounded by mounting hole in bottom plate 1, when processing work, bottom plate 1 by the adjustment of T-type nail tightly
It is fixed on work top, 2 position of V-block is then fixed, according to 7 design drawing angle requirement of blade workpiece, indexable clamp body 3
It is connected in the V-groove 201 of V-block 2 by screw 11.
When being processed using this fixture, specifically: according to the requirement of 7 air flue angle of blade workpiece, indexable folder is rotated first
Specific 3, the V-type through slot 301 on indexable clamp body 3 adjusts the angle, to be adjusted to after required angle, due to indexable clamp body
3 both ends arc connection wall 302 is equipped with arc slotted hole 303, therefore even if indexable clamp body 3 turns an angle, can
Index fixture body 3 can also pass through arc slotted hole 303 by screw 11 and connect with corresponding threaded hole 202, realize indexable folder
Specific 3 with the connection of V-block 2, complete the adjustment of the angle of indexable clamp body 3, then utilize the V-groove 201 of V-block 2
The position of 8 locating blades workpiece of locating piece, 7 horizontal direction of groove face, the V-type through slot 301 being now placed on indexable clamp body 3
The position of interior blade workpiece 7 is fixed, and after angle, the height of blade workpiece 7 reach necessary requirement, is pressed by the briquetting 6 of pressing plate 5
Tight blade workpiece 7, screws fastening by top nut 9 and lower nut 12, and bottom is screwed by nut 13 and is fixedly connected with bottom plate 1, finally,
It can carry out blade processing.When pressing plate 5 is fixed, fixture two sides are respectively equipped with supporting block 10, and branch is played when for compressing blade workpiece 7
Support effect compresses workpiece stronger.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (10)
1. back arc goes surplus with indexable fixture in a kind of roughing blade, it is characterised in that: including being fixed on platen
On bottom plate (1), the V-block (2) that is fixed on bottom plate (1) and the indexable folder being arranged in the V-groove (201) of V-block (2)
Specifically (3), the indexable clamp body (3) is cylindrical-shaped structure, on cylindrical-shaped structure surface along the axial direction of cylindrical-shaped structure
Direction offers the V-type through slot (301) for placing blade workpiece (7), is machined with arc at the both ends of indexable clamp body (3)
Connection wall (302) is symmetrically opened up there are two arc slotted hole (303) on each arc connection wall (302), in indexable fixture
One end of the V-type through slot (301) of body (3) is equipped with the locating piece (8) that limitation blade workpiece (7) moves horizontally, the V in V-block (2)
The threaded hole (202) matched with arc slotted hole (303), arc slotted hole are offered on two groove faces of type groove (201)
(303) be arranged in a one-to-one correspondence with threaded hole (202), by screw (11) pass through arc slotted hole (303) afterwards with corresponding spiral shell
Indexable clamp body (3) is fixed on V-block (2) by pit (202) connection, is respectively provided in the two sides of indexable clamp body (3)
One for compressing the hold-down mechanisms of blade workpiece (7), and each hold-down mechanism includes pressing plate (5), briquetting (6) and vertically
The stud (4) of setting, the pressing plate (5) connect with one end of stud (4), the other end of the stud (4)
It is connect with bottom plate (1), the briquetting (6) is arranged on pressing plate (5) close to the one end of blade workpiece (7).
2. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 1, it is characterised in that:
One end of the not set briquetting (6) of each pressing plate (5) is equipped with supporting block (10), one end of the supporting block (10) with
Pressing plate (5) lower surface offsets, and the other end offsets with bottom plate (1) upper surface.
3. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 2, it is characterised in that: two
A briquetting (6) is copper billet, and each briquetting (6) is fixed on the lower surface of respective pressing plate (5) by Screw.
4. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 3, it is characterised in that: institute
Pressing plate (5) are stated equipped with slotted hole (501), one end of stud (4) passes through after lower nut (12), slotted hole (501) successively
Attachment spacers and top nut (9).
5. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 4, it is characterised in that: institute
It states locating piece (8) and is arranged two, be bolted on two groove faces of V-type through slot (301).
6. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 5, it is characterised in that: institute
Stating V-block (2) is split type structure, the big small V-block such as including two disposed in parallel, and two small V-block setting can turn
The both ends of position fixture body (3).
7. back arc removes the indexable fixture of surplus in a kind of roughing blade according to claim 1 to 6,
Be characterized in that: the angle of the V-groove (201) of the V-block (2) is 120 °, the V-type through slot (301) of indexable clamp body (3)
Angle is 90 °.
8. a kind of interior arc of carrying on the back of roughing blade described in any one of -4 removes the indexable fixture of surplus according to claim 1,
Be characterized in that: the stud (4) and bottom plate (1) junction are equipped with the nut (13) for being used for fastening.
9. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 7, it is characterised in that: institute
Stating arc connection wall (302) is 1/2-3/4 circular arc.
10. back arc goes surplus with indexable fixture in a kind of roughing blade according to claim 8, it is characterised in that:
The bottom plate (1) is square plate, and is surrounded by mounting hole in bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910043797.6A CN109551273B (en) | 2019-01-17 | 2019-01-17 | Indexable clamp for removing allowance of inner back arc of rough machining blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910043797.6A CN109551273B (en) | 2019-01-17 | 2019-01-17 | Indexable clamp for removing allowance of inner back arc of rough machining blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109551273A true CN109551273A (en) | 2019-04-02 |
| CN109551273B CN109551273B (en) | 2024-03-15 |
Family
ID=65873170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910043797.6A Active CN109551273B (en) | 2019-01-17 | 2019-01-17 | Indexable clamp for removing allowance of inner back arc of rough machining blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109551273B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370045A (en) * | 2019-07-29 | 2019-10-25 | 无锡市艾尔福叶片有限公司 | Fixture for stator blade milling overall length processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201565806U (en) * | 2009-11-03 | 2010-09-01 | 南通中能机械制造有限公司 | Adjustable blade processing tooling |
| CN104289934A (en) * | 2014-08-25 | 2015-01-21 | 哈尔滨汽轮机厂有限责任公司 | Blade locating device for machining milling dowel of compression ignition guide blade of milling machine |
| WO2015118180A1 (en) * | 2014-02-10 | 2015-08-13 | Grasch Gmbh | Clamping device for clamping a turbine blade blank |
| KR20160074941A (en) * | 2014-12-19 | 2016-06-29 | 황옥상 | Workpiece processing tool of milling machine |
| CN205394060U (en) * | 2016-03-03 | 2016-07-27 | 无锡润和叶片制造有限公司 | Steam turbine moving vane finish milling back of body reentrant angle universal fixturing body |
| CN107756084A (en) * | 2016-08-15 | 2018-03-06 | 田曼丽 | A kind of armature spindle milling machine tooling |
| WO2018166181A1 (en) * | 2017-03-17 | 2018-09-20 | 山东大学 | Flexible clamp and method for use in milling blades having large complex curved surfaces |
| CN209407992U (en) * | 2019-01-17 | 2019-09-20 | 哈尔滨市天行科技发展有限责任公司 | Back arc goes surplus with indexable fixture in roughing blade |
-
2019
- 2019-01-17 CN CN201910043797.6A patent/CN109551273B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201565806U (en) * | 2009-11-03 | 2010-09-01 | 南通中能机械制造有限公司 | Adjustable blade processing tooling |
| WO2015118180A1 (en) * | 2014-02-10 | 2015-08-13 | Grasch Gmbh | Clamping device for clamping a turbine blade blank |
| CN104289934A (en) * | 2014-08-25 | 2015-01-21 | 哈尔滨汽轮机厂有限责任公司 | Blade locating device for machining milling dowel of compression ignition guide blade of milling machine |
| KR20160074941A (en) * | 2014-12-19 | 2016-06-29 | 황옥상 | Workpiece processing tool of milling machine |
| CN205394060U (en) * | 2016-03-03 | 2016-07-27 | 无锡润和叶片制造有限公司 | Steam turbine moving vane finish milling back of body reentrant angle universal fixturing body |
| CN107756084A (en) * | 2016-08-15 | 2018-03-06 | 田曼丽 | A kind of armature spindle milling machine tooling |
| WO2018166181A1 (en) * | 2017-03-17 | 2018-09-20 | 山东大学 | Flexible clamp and method for use in milling blades having large complex curved surfaces |
| CN209407992U (en) * | 2019-01-17 | 2019-09-20 | 哈尔滨市天行科技发展有限责任公司 | Back arc goes surplus with indexable fixture in roughing blade |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370045A (en) * | 2019-07-29 | 2019-10-25 | 无锡市艾尔福叶片有限公司 | Fixture for stator blade milling overall length processing |
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| Publication number | Publication date |
|---|---|
| CN109551273B (en) | 2024-03-15 |
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Inventor after: Liu Guangdong Inventor after: Ma Zhongchen Inventor after: Wang Songbo Inventor after: Wang Guichun Inventor after: Bao Yongming Inventor after: Hu Chengxin Inventor after: Liu Xinyu Inventor after: Cao Yang Inventor after: Ji Yousheng Inventor after: Gao Hui Inventor after: Mu Xiangzhen Inventor after: Zhang Yinling Inventor before: Bao Yongming Inventor before: Gao Hui Inventor before: Zhang Yinling Inventor before: Mu Xiangzhen Inventor before: Liu Guangdong Inventor before: Hu Chengxin Inventor before: Wang Guichun Inventor before: Ma Zhongchen Inventor before: Ji Yousheng Inventor before: Liu Xinyu Inventor before: Cao Yang Inventor before: Wang Songbo |
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Effective date of registration: 20210705 Address after: 150040 Heilongjiang Province, Harbin city Xiangfang district since the first Street No. 30 Applicant after: HEILONGJIANG ACADEMY OF MACHINERY SCIENCES Address before: 150040 Heilongjiang Province, Harbin city Xiangfang district since the first Street No. 30 Applicant before: HARBIN TIANXING TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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