CN102161162B - Hydraulic clamp for processing spindle taper hole - Google Patents
Hydraulic clamp for processing spindle taper hole Download PDFInfo
- Publication number
- CN102161162B CN102161162B CN201110089280.4A CN201110089280A CN102161162B CN 102161162 B CN102161162 B CN 102161162B CN 201110089280 A CN201110089280 A CN 201110089280A CN 102161162 B CN102161162 B CN 102161162B
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- Prior art keywords
- clamp body
- under fluid
- conduit under
- fluid pressure
- expanding sleeve
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- 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.)
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- 239000012530 fluid Substances 0.000 claims description 57
- 238000003754 machining Methods 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 6
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 4
- 239000003607 modifier Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000000227 grinding Methods 0.000 abstract description 4
- 238000003801 milling Methods 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a hydraulic clamp for processing spindle taper hole, which realizes grinding instead of milling, solves the problem of coaxiality between a spindle bearing shift of a core part spindle on the high-speed electrical spindle of the core part of a high-speed numerically controlled machine tool and a spindle taper hole, and improves the manufacturing precision of the core part spindle on the high-spindle electrical spindle. The hydraulic clamp comprises a clamp body, wherein the rear end of the clamp body is coaxially connected to the spindle of the precise numerically controlled machine tool; the front end of the clamp and the clamp are coaxially sleeved with an outer expansion sleeve for clamping parts to be processed; the clamp body comprises an inner radiate hydraulic pipeline system which uniformly pressures the inner wall of the outer expansion sleeve; and the radiate hydraulic pipeline system comprises a plurality of radiate hydraulic pipelines with the same aperture, which radiate the later wall of the clamp body uniformly by taking a central axis of the outer expansion sleeve as the centre.
Description
Technical field
The present invention relates to Machining Technology field, a kind of hydraulically operated fixture for machining spindle small taper hole particularly, described main shaft is the core part of the core component-high-speed electric main shaft of high-speed numeric control lathe.
Background technology
For meeting the performance requirement of the high speed, high accuracy, low vibration, low noise etc. of Digit Control Machine Tool, high-speed electric main shaft is as the Core Feature parts of High Speed NC Machine Tools, and the height of its quality is directly connected to the precision of Digit Control Machine Tool.And the core part of high-speed electric main shaft is exactly main shaft, its requirement to accuracy of manufacture key is exactly the axiality of bearings at both ends shelves and spindle taper hole, and General Requirements is controlled in 0.002mm, surface roughness Ra 0.8 μ m.Wherein, small taper hole particularly, manufacture difficulty is quite large, the numerical-control universal cylindrical grinder of general employing " in, two is outer " three bistriques is processed both at home and abroad at present, when carrying out small taper hole grinding, because grinding wheel diameter is less, cause the linear velocity of emery wheel very large, grinding surface quality does not reach requirement, and production cost is high, and production efficiency is low.
Summary of the invention
The present invention is directed to defect and deficiency that prior art exists, a kind of hydraulically operated fixture for machining spindle small taper hole is provided, solve the problem of main shaft bearing shelves and main shaft small taper hole axiality, improved the accuracy of manufacture of main shaft; Described main shaft is the core part of the core component-high-speed electric main shaft of high-speed numeric control lathe.
Technical scheme of the present invention is:
A kind of hydraulically operated fixture for machining spindle small taper hole, it is characterized in that, comprise clamp body, described clamp body rear end is coaxially connected with precise NC lathe main shaft, described clamp body front end and clamp body coaxial package are useful on the outer expanding sleeve that clamps part to be processed, in described clamp body, comprise the radial conduit under fluid pressure system of evenly exerting pressure to outer expanding sleeve inwall, described radial conduit under fluid pressure system comprises centered by outer expanding sleeve central axis to some radial conduit under fluid pressure clamp body sidewall homogeneous radiation and that bore is identical.
Described outer expanding sleeve inwall middle part be the inside thin-wall construction of contraction distortion, has the cylindric hydraulic cavities of encirclement outer expanding sleeve inwall thin-wall construction in the middle part of corresponding outer wall, and the middle part of described cylindric hydraulic cavities has annulus projection; Described radial conduit under fluid pressure is communicated with hydraulic cavities in annulus projection corresponding position perpendicular to hydraulic cavities outer wall.
Described radial conduit under fluid pressure system comprises four radial conduit under fluid pressures that are communicated with the cylindric hydraulic cavities of outer expanding sleeve, article four, radial conduit under fluid pressure connects respectively and is parallel to outer expanding sleeve and extands rearward to four longitudinal conduit under fluid pressures clamp body rear portion and that equate with outer expanding sleeve vertical range, and described four longitudinal conduit under fluid pressures mutually intersect the transverse hydraulic pipelines that are communicated with and are interconnected by being positioned at vertical with four longitudinal conduit under fluid pressures two of clamp body rear portion.
Described clamp body bottom center position is inwardly drilled with column pipeline intercommunicating pore, and described transverse hydraulic pipeline mutually intersects and is communicated with at place, pipeline communication hole, and the position of the corresponding pipeline intercommunicating pore in clamp body bottom surface has tapped through hole, and sealing screw is housed on tapped through hole.
On the sidewall of described clamp body, have plunger, described plunger is inwardly connected to the outer wall of pipeline communication hole from sidewall, and the pinching screw of the application of force is installed on plunger.
On described clamp body sidewall and on front end face, corresponding to radial conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline, there is tapped through hole, on described tapped through hole, sealing screw is housed.
Described radial conduit under fluid pressure is with longitudinally the infall of conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline are rounding off.
Described outer expanding sleeve and clamp body adopt interference assembling, magnitude of interference 0.03-0.05mm.
Described outer expanding sleeve adopts the spring steel of vacuum modifier treatment.
Described clamp body rear end is suitable by flange end and machine tool chief axis, fit clearance 0.005mm.
Technique effect of the present invention:
Hydraulically operated fixture for machining spindle small taper hole provided by the invention, it is the hydraulically operated fixture that a kind of external-expanding type has radiation clamping function, realization with car for mill, solved the problem of main shaft bearing shelves and main shaft small taper hole axiality, the accuracy of manufacture that has improved the core part main shaft on high-speed electric main shaft, described high-speed electric main shaft is the core component of high-speed numeric control lathe.Specifically, described hydraulically operated fixture mainly comprises clamp body, outer expanding sleeve and the radial conduit under fluid pressure system that can evenly exert pressure to outer expanding sleeve inwall, clamp body is connected with the main shaft of numerically controlled lathe, outer expanding sleeve and clamp body are that interference is coaxially assembled, radial conduit under fluid pressure system comprises that homogeneous radiation shape distributes centered by outer expanding sleeve, the radial conduit under fluid pressure that bore is identical, in pipeline, fill special gel plastics, radial conduit under fluid pressure system can be exerted pressure to outer expanding sleeve inwall equably, clamping force is evenly delivered to ringfeder inwall simultaneously, guarantee that ringfeder thin-walled inwardly shrinks simultaneously, clamping work pieces, when guaranteeing fastening part main shaft to be processed, guaranteed that again part main shaft to be processed is coaxial with clamp body.From design details, outer expanding sleeve adopts the modifier treatment of spring steel vacuum, so both meets the strain requirement of outer expanding sleeve, has reduced again fixture distortion itself, thereby has improved the clamping accuracy of fixture and extended the fixture life-span; Outer expanding sleeve has also lengthened size, outer expanding sleeve inwall middle part is the inside thin-wall construction of contraction distortion, the middle part that corresponding outer wall middle part surrounds the cylindric hydraulic cavities of outer expanding sleeve inwall thin-wall construction has annulus projection, form " B " font cavity structure, make like this pressure transmission more even, guarantee to clamp more stable; And the round and smooth design of pipeline infall has reduced the resistance that gel plastics move.From overall technology effect, the present invention also has following remarkable advantage: (1) production efficiency is high.(2) production cost is low.(3) utilize numerically controlled lathe to replace numerically control grinder, realize with car for mill.Through reality, detect, on precise NC lathe, utilize special fixture of the present invention, in conjunction with reasonably cutter selection, the small taper hole of processing and bearing guard axiality are in 0.0015, and surface roughness Ra reaches 0.4, can meet design requirement completely, on numerically controlled lathe, realized with car for mill, production efficiency improves more than three times, and production cost only has original 1/8th.
Accompanying drawing explanation
Fig. 1 is the present invention's part schematic diagram to be processed.
Fig. 2 is that the present invention is for the stereogram of the hydraulically operated fixture of machining spindle small taper hole.
Tu3Shi Tu2Yan center longitudinal profile schematic diagram.
Fig. 4 is that Fig. 3 is along A-A generalized section.
Reference numeral lists as follows: 1-clamp body, 2-pinching screw, 3-outer expanding sleeve, 4-sealing screw, 5-conduit under fluid pressure system, 11-cavity, 12-pipeline communication hole, 21-plunger, 31-outer expanding sleeve hydraulic cavities, 32-annulus projection, 41-tapped through hole, the radial conduit under fluid pressure of 51-, the longitudinal conduit under fluid pressure of 52-, 53-transverse hydraulic pipeline.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The object of the invention is to provide a kind of hydraulically operated fixture that utilizes external-expanding type to there is radiation clamping function, solve a difficult problem for the highly-efficient processing of main shaft small taper hole.To achieve these goals, the present invention proposes a kind of hydraulically operated fixture that utilizes external-expanding type to have radiation clamping function, and realization for mill, solves a difficult problem for the highly-efficient processing of main shaft small taper hole with car.
Fig. 1 is the part schematic diagram that the present invention will process.The port size of spindle taper hole is Φ 11 ± 0.05, and angle is 16 ° ± 30 ", surface roughness requires Ra0.8, and taper hole is less than 0.002 to the axiality of bearing guard.
As shown in Figure 2, Figure 3, Figure 4, the present invention is for the stereogram of the hydraulically operated fixture embodiment of machining spindle small taper hole and longitudinally with along the cutaway view of A-A section.Referring to Fig. 2, a kind of hydraulically operated fixture for machining spindle small taper hole, comprises clamp body 1, and clamp body 1 rear end is coaxially connected with the main shaft of precise NC lathe, and clamp body front end and clamp body coaxial package are useful on the outer expanding sleeve 3 that clamps part to be processed.On the sidewall of clamp body 1, there is pinching screw 2 and sealing screw 4.Referring to Fig. 3, Fig. 4, in described clamp body 1, comprise the radial conduit under fluid pressure system 5 of exerting pressure to outer expanding sleeve 3 inwalls equably, described radial conduit under fluid pressure system 5 comprises centered by outer expanding sleeve central axis to some radial conduit under fluid pressure 51 clamp body sidewall homogeneous radiation and that bore is identical.In the present embodiment, the front end of clamp body 1 is drilled with the cylindrical cavity 11 coaxial with clamp body that inserts part to be processed, cavity inner wall coaxial package is useful on the outer expanding sleeve 3 that clamps part to be processed, described outer expanding sleeve 3 inwalls middle parts are the inside thin-wall construction of contraction distortion, corresponding outer wall middle part has the cylindric hydraulic cavities 31 of surrounding outer expanding sleeve inwall thin-wall construction, and the middle part of described cylindric hydraulic cavities 31 has annulus projection 32; Described radial conduit under fluid pressure 51 is communicated with hydraulic cavities 31 in annulus projection corresponding position perpendicular to hydraulic cavities outer wall.Described radial conduit under fluid pressure system 5 comprise four be communicated with outer expanding sleeve hydraulic cavities radial conduit under fluid pressure 51, article four, radial conduit under fluid pressure 51 connects respectively and is parallel to outer expanding sleeve and extands rearward to four longitudinal conduit under fluid pressures 52 clamp body rear portion and that equate with outer expanding sleeve vertical range, and described four longitudinal conduit under fluid pressures mutually intersect the transverse hydraulic pipelines 53 that are communicated with and are interconnected by being positioned at vertical with four longitudinal conduit under fluid pressures two of clamp body rear portion; Clamp body bottom center position is inwardly drilled with column pipeline intercommunicating pore 12, and transverse hydraulic pipeline 53 mutually intersects and is communicated with at place, pipeline communication hole, and the position of the corresponding pipeline intercommunicating pore in clamp body bottom surface has tapped through hole 41, and sealing screw 4 is housed on tapped through hole; Plunger 21 is set on the sidewall of described clamp body, and described plunger is inwardly connected to the outer wall in pipeline communication hole 12 from sidewall, and the pinching screw 2 of the application of force is installed on plunger 21; During clamping, only need tighten pinching screw, clamping force is transmitted to transverse hydraulic pipeline 53, longitudinal conduit under fluid pressure 52, radial conduit under fluid pressure 51 successively by the outer wall in pipeline communication hole 12, evenly be delivered to outer expanding sleeve inwall, guarantee that outer expanding sleeve inwall inwardly shrinks, clamping work pieces simultaneously simultaneously.On clamp body sidewall and on front end face, corresponding to radial conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline, there is tapped through hole 41, sealing screw 4 is housed on described tapped through hole.For improving the clamping accuracy of fixture, improve the fixture life-span, reduce fixture distortion itself, outer expanding sleeve adopts the modifier treatment of spring steel 65Mn vacuum, meet the strain requirement of outer expanding sleeve, on the other hand for making clamping accuracy higher, more stable, outer expanding sleeve of the present invention has lengthened size, and the middle part that outer wall middle part surrounds the cylindric hydraulic cavities of outer expanding sleeve inwall thin-wall construction has annulus projection, forms " B " font cavity structure; Adopt " B " font cavity structure, guarantee to clamp more stable.Outer expanding sleeve and clamp body adopt interference assembling, magnitude of interference 0.03-0.05mm, and outer expanding sleeve endoporus need at least stay 2mm surplus, right boring endoporus again after fixture and lathe spindle assemble, assurance fixture is coaxial with lathe spindle; In hydraulic tube, fill with special gel plastics, radial conduit under fluid pressure is with longitudinally the infall of conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline are processed into rounding off, the resistance moving to reduce gel plastics.Clamp body 1 adopts that 45 steel are modified to be processed, and its flange end and machine tool chief axis match, fit clearance 0.005mm, for reducing fixture because of the impact of the uneven vibration producing of Mass Distribution on machined surface quality, fixture carries out dynamic balancing processing at the complete need of assembly and adjustment, and balance quality is undertaken by G1.
More than open is only instantiation of the present invention, but the present invention is not limited thereto.It should be pointed out that the above specific embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore, although this description and embodiment have been described in detail to the invention,, it will be appreciated by those skilled in the art that still and can modify or be equal to replacement the invention; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it is all encompassed in the middle of the protection domain of the invention patent.
Claims (6)
1. the hydraulically operated fixture for machining spindle small taper hole, it is characterized in that, comprise clamp body, described clamp body rear end is coaxially connected with precise NC lathe main shaft, described clamp body front end and clamp body coaxial package are useful on the outer expanding sleeve that clamps part to be processed, in described clamp body, comprise the radial conduit under fluid pressure system of evenly exerting pressure to outer expanding sleeve inwall, described radial conduit under fluid pressure system comprises centered by outer expanding sleeve central axis to some radial conduit under fluid pressure clamp body sidewall homogeneous radiation and that bore is identical; Described outer expanding sleeve inwall middle part be the inside thin-wall construction of contraction distortion, has the cylindric hydraulic cavities of encirclement outer expanding sleeve inwall thin-wall construction in the middle part of corresponding outer wall, and the middle part of described cylindric hydraulic cavities has annulus projection; Described radial conduit under fluid pressure is communicated with hydraulic cavities in annulus projection corresponding position perpendicular to hydraulic cavities outer wall; Described radial conduit under fluid pressure system comprises four radial conduit under fluid pressures that are communicated with the cylindric hydraulic cavities of outer expanding sleeve, article four, radial conduit under fluid pressure connects respectively and is parallel to outer expanding sleeve and extands rearward to four longitudinal conduit under fluid pressures clamp body rear portion and that equate with outer expanding sleeve vertical range, and described four longitudinal conduit under fluid pressures mutually intersect the transverse hydraulic pipelines that are communicated with and are interconnected by being positioned at vertical with four longitudinal conduit under fluid pressures two of clamp body rear portion; Described clamp body bottom center position is inwardly drilled with column pipeline intercommunicating pore, and described transverse hydraulic pipeline mutually intersects and is communicated with at place, pipeline communication hole, and the position of the corresponding pipeline intercommunicating pore in clamp body bottom surface has tapped through hole, and sealing screw is housed on tapped through hole; On the sidewall of described clamp body, plunger is set, described plunger is inwardly connected to the outer wall of pipeline communication hole from sidewall, and the pinching screw of the application of force is installed on plunger.
2. the hydraulically operated fixture for machining spindle small taper hole according to claim 1, it is characterized in that, on described clamp body sidewall and on front end face, corresponding to radial conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline, there is tapped through hole, on described tapped through hole, sealing screw is housed.
3. the hydraulically operated fixture for machining spindle small taper hole according to claim 2, is characterized in that, described radial conduit under fluid pressure is with longitudinally the infall of conduit under fluid pressure and the infall of longitudinal conduit under fluid pressure and transverse hydraulic pipeline are rounding off.
4. the hydraulically operated fixture for machining spindle small taper hole according to claim 1, is characterized in that, described outer expanding sleeve adopts the spring steel of vacuum modifier treatment.
5. the hydraulically operated fixture for machining spindle small taper hole according to claim 4, is characterized in that, described outer expanding sleeve and clamp body adopt interference assembling, magnitude of interference 0.03-0.05mm.
6. the hydraulically operated fixture for machining spindle small taper hole according to claim 1, is characterized in that, described clamp body rear end is suitable by flange end and machine tool chief axis, fit clearance 0.005mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110089280.4A CN102161162B (en) | 2011-04-08 | 2011-04-08 | Hydraulic clamp for processing spindle taper hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110089280.4A CN102161162B (en) | 2011-04-08 | 2011-04-08 | Hydraulic clamp for processing spindle taper hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102161162A CN102161162A (en) | 2011-08-24 |
| CN102161162B true CN102161162B (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110089280.4A Expired - Fee Related CN102161162B (en) | 2011-04-08 | 2011-04-08 | Hydraulic clamp for processing spindle taper hole |
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| Country | Link |
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| CN (1) | CN102161162B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271783A (en) * | 2016-08-31 | 2017-01-04 | 成都凯赛尔电子有限公司 | A kind of device and method of processing stainless steel thin wall cylinder inner circle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3516681A (en) * | 1968-05-16 | 1970-06-23 | Balas Collet Co | Hydraulic chuck or arbor |
| US5141370A (en) * | 1990-12-06 | 1992-08-25 | Carrier Corporation | High precision tool holder |
| US5516243A (en) * | 1995-01-03 | 1996-05-14 | Hydra-Lock Corporation | Reamer chuck and tool expander |
| CN2688444Y (en) * | 2004-04-09 | 2005-03-30 | 张重阳 | Hydraulic high-precision centering clamp chuck |
| CN201659445U (en) * | 2010-03-03 | 2010-12-01 | 天津市中马骏腾精密机械制造有限公司 | Hydraulic chuck tool |
| CN201988973U (en) * | 2011-04-08 | 2011-09-28 | 常州合泰微特电机有限公司 | Hydraulic fixture for machining small taper hole of main shaft |
-
2011
- 2011-04-08 CN CN201110089280.4A patent/CN102161162B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3516681A (en) * | 1968-05-16 | 1970-06-23 | Balas Collet Co | Hydraulic chuck or arbor |
| US5141370A (en) * | 1990-12-06 | 1992-08-25 | Carrier Corporation | High precision tool holder |
| US5516243A (en) * | 1995-01-03 | 1996-05-14 | Hydra-Lock Corporation | Reamer chuck and tool expander |
| CN2688444Y (en) * | 2004-04-09 | 2005-03-30 | 张重阳 | Hydraulic high-precision centering clamp chuck |
| CN201659445U (en) * | 2010-03-03 | 2010-12-01 | 天津市中马骏腾精密机械制造有限公司 | Hydraulic chuck tool |
| CN201988973U (en) * | 2011-04-08 | 2011-09-28 | 常州合泰微特电机有限公司 | Hydraulic fixture for machining small taper hole of main shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102161162A (en) | 2011-08-24 |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU DETAI PRECISION ELECTROMECHANICAL CO., LTD Free format text: FORMER OWNER: CHANGZHOU HETAI WEITE ELECTRICAL MACHINERY CO., LTD. Effective date: 20120420 |
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Effective date of registration: 20120420 Address after: 213011 Jiangsu Province, Changzhou city Qishuyan District North Qin new industrial zone of Thailand in the motor Applicant after: Jiangsu Detai Precision Electromachanical Co., Ltd. Address before: 213011, Changzhou, Jiangsu, Qishuyan Province, No. 108 Beiyang Road Applicant before: Changzhou Hetai Motor Co., Ltd. |
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Effective date of registration: 20151009 Address after: 213000, Jiangsu Wujin District, Changzhou province observation Town, Qin San village industrial concentration area Patentee after: Changzhou Hetai electrical Limited by Share Ltd Address before: 213011 Jiangsu Province, Changzhou city Qishuyan District North Qin new industrial zone of Thailand in the motor Patentee before: Jiangsu Detai Precision Electromachanical Co., Ltd. |
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Granted publication date: 20140312 Termination date: 20200408 |