CN102158017A - Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor - Google Patents
Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor Download PDFInfo
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- CN102158017A CN102158017A CN 201110077690 CN201110077690A CN102158017A CN 102158017 A CN102158017 A CN 102158017A CN 201110077690 CN201110077690 CN 201110077690 CN 201110077690 A CN201110077690 A CN 201110077690A CN 102158017 A CN102158017 A CN 102158017A
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- linear electric
- electric motor
- line embedding
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 9
- 238000009966 trimming Methods 0.000 title abstract 3
- 238000004080 punching Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000007667 floating Methods 0.000 claims abstract description 12
- 238000003475 lamination Methods 0.000 claims description 40
- 238000005086 pumping Methods 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000003672 processing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- IXSZQYVWNJNRAL-UHFFFAOYSA-N etoxazole Chemical compound CCOC1=CC(C(C)(C)C)=CC=C1C1N=C(C=2C(=CC=CC=2F)F)OC1 IXSZQYVWNJNRAL-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
The invention provides a manufacturing method and trimming die for a primary iron core disk of a long primary linear electric motor. The method is characterized in that a continuously automatic notching blanking mode is adopted to place a multislot of the primary iron core disk of the long primary linear electric motor in a high-speed punch press, and dies on the high-speed punch press are utilized to finish a blank operation in the continuously automatic blanking mode; each punching motion cycle of the punching dies on the high-speed punch press is only used for finishing one to two opened inserted line slots and punching one to two groups of pilot holes or other cavities at the same time; and all the opened inserted line slots and pilot holes or other cavities on the primary iron core disk of the long primary linear electric motor meet a blank procedure requirement step by step by using a plurality of circularly and continuously automatic blanking procedures which are set. The trimming die comprises an upper die and a lower die, wherein a fixed plate of the upper die is provided with punching inserted line slot punches, more than two pilot hole punches and one or two auxiliary hole punches, and the punching inserted line slot punches are floating punches; an upper die plate is provided with pulling trays which can slide on the tops of the punching inserted line slot punches.
Description
Technical field
The present invention relates to a kind of manufacture method and device of motor component, relate to a kind of city rail vehicle long preliminary linear electric motor primary iron-core lamination manufacture method and device specifically.Be mainly used in the manufacturing of the elementary iron-core lamination of the long preliminary linear traction electric machine of city rail vehicle.
Background technology
The linear electric motors railcar is one of state-of-the-art urban track traffic instrument in the world today, gains the name because of adopting the linear electric machine traction technology.Produce electromagnetic force between linear electric motors utmost point energising just and the secondary induction plate during vehicle operating, tractive effort or electric braking force as train, and the adhesion between wheel track is irrelevant, compare with traditional electric rotating machine railcar, the linear electric motors railcar is the railcar of non-adhesion type of drive, have many superior functions such as project cost is low, operation cost is low, noise is low, climbing capacity is strong, curve negotiation ability is strong, maintenance is simple, be adapted at heavy grade, move in many, the baroque zone of urban geology of turning.Just be based on these advantages, this technology that belongs to non-adhesion track traffic mode has become the trend of world's track traffic new development, is adopted in a large number by Japan, Canada.China has also introduced this vehicle and has been applied to the fast rail of Beijing Capital Airport and 4,5, No. 6 lines of Guangzhou Underground.It indicates that the development level of China's city rail vehicle progressively integrates with international most advanced level.The application prospect of linear electric machine traction technology on city rail vehicle is extensive.
Linear electric motors are elementary to be made up of elementary iron core and primary coil.Elementary iron core is overrided to form by the lamination of band multiple-grooved.Because being used for the design feature of the elementary lamination of linear electric motors of city rail vehicle is the uniform strip iron plate of multiple-grooved, the size of its length direction is greater than more than the 1500mm, and its version is generally shown in the accompanying drawing 1.Processing method commonly used is compound blanking method and numerical control device processing method.The Compound Machining method is the rectangular billot that earlier profile that becomes the elementary lamination of single-piece under the punching material is needed, then billot is placed on the special-purpose punching processing mold and locatees, mould once drawing on large-scale pressing equipment with special use, take out elementary lamination and lamination clout then respectively, and lamination has, and how long die length must be greater than its length, because a drawing of elementary lamination shape, the operating pressure that requires punch press is at least more than 200 tons.The numerical control device processing method, it is the billot that earlier profile that becomes the single-piece punching under the punching material is needed, then billot is placed on the numerical control device, the upper and lower mould in various shapes chamber in the punching is installed in respectively on the different station on the numerical control press, equipment is by the processing sequence programming in each shape chamber on the elementary lamination, by the work and the location of lamination on each station of each mould on control centre's control appliance of equipment, follow procedure processes each the shape chamber in the punching respectively.
Because the design feature of the elementary lamination of linear electric motors, length-width ratio is big, and groove is many and evenly become in-line to arrange.If long preliminary linear electric motor primary lamination can cause mould volume (length is more than 1.5 meters) huge with blanking and piercing with combination tool method commonly used, use pressing equipment operating pressure big (more than the 200T), the punching stock utilization is lower, production cost is higher, workman's inconvenient operation, labour intensity is big, and production efficiency is low, can not satisfy requirement of mass production.If use the numerical control device blanking method, then need be with large-scale digital stamping equipment, because of the big characteristics of the structure length-width ratio of elementary lamination, the positional accuracy of billot on equipment is difficult to guarantee, therefore one of the punching quality also is difficult to guarantee to property, so that the regularity that the punching of being processed into thus laminates into behind the elementary iron core is difficult to guarantee that corresponding processing cost is higher.Because its punching groove number of structure of elementary lamination is greater than more than 40, elementary lamination length is long, elementary lamination processing method commonly used generally adopts the method for grouping punching press or Integratively drawing, the volume ratio of mould is bigger like this, the pressing equipment tonnage demand is big, cost height, inconvenient operation.If with large-scale digital stamping equipment can with little mould repeatedly method for processing make punching, but that numerical control device is once invested is bigger, the repeatability of product quality can't guarantee that cost is higher, is not suitable for producing in enormous quantities.Therefore need further to be improved.
Summary of the invention
Purpose of the present invention is intended to overcome existing blanking and piercing with combination tool method commonly used need use powerful device, large volume mould, deficiency that production efficiency is low, also in order to overcome numerical control device processing cost high product quality one, provide a kind of new long preliminary linear electric motor primary lamination manufacture method simultaneously to the deficiency that property is difficult to guarantee; This method has the Device-Generalization of use under the product quality premise that guarantees, mould structure is simple, and accurate positioning is easy to operate, production efficiency height, constant product quality, the low and characteristics that are suitable for producing in batches of production cost.
Another object of the present invention is to propose a kind of punch die of realizing said method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of long preliminary linear electric motor primary lamination manufacture method, adopt the continuously automatic stamping-out mode of jet-bedding, long preliminary linear electric motor primary lamination multiple-grooved is placed on the high velocity ram machine, finishes blank operation by the repeatedly continuously automatic stamping-out mode of the mould on the high velocity ram machine; And each punch press motion cycle of diel on the high velocity ram machine is only finished towards 1-2 opening line embedding groove, simultaneously towards 1-2 group correcting hole or other die cavity; All opening line embedding grooves on the long preliminary linear electric motor primary lamination and correcting hole or other die cavity are finished the blank operation requirement in batches by the continuously automatic stamping-out program of the circulation of a plurality of settings.
Wherein, because the shape at elementary lamination two ends is different with the middle part, if mould one-shot groove continuous operation then can not go out satisfactory shape, the ending of a circulation and at the first bruss one-shot groove drift do not need work, drift does not contact with lower die, other operating time then drift contact with die.Pumping board and cylinder rod link, and cylinder rod advances or drives the pumping board rectilinear motion when retreating, and drive the float inclined-plane of cushion block of drift by the inclined-plane on the pumping board simultaneously and move up and down, and float thereby drive drift.
According to the described punch die that said method proposed be: a kind of long preliminary linear electric motor primary lamination punch die, comprise part of the upper die and part of the lower die, the part of the upper die comprises cope match-plate pattern at least, on cope match-plate pattern, be fixed with upper mould fixed plate, be lined with upper die plate between cope match-plate pattern and the upper mould fixed plate, upper die plate can be adjusted the height of cope match-plate pattern; Also be fixed with guider at cope match-plate pattern, be with the patrix guide plate on the guider, the following pressing plate that also is fixed with of patrix guide plate is pushed down when being used for punching and is dashed the non-punching part of material; The part of the lower die comprises counterdie fixed head and lower bolster at least, and lower bolster is provided with the pilot hole for the guider guiding.Be equipped with towards line embedding groove drift, correcting hole drift and one or two fabrication hole drift more than two at upper mould fixed plate, and be floating punch towards the line embedding groove drift, be provided with pumping board on cope match-plate pattern, pumping board can slide above the top of line embedding groove drift; Simultaneously, have and the breach that matches towards line embedding groove drift top at pumping board, when the breach of pumping board to the top of square impact line embedding groove drift above the time, the projection on the unsteady cushion block above the line embedding groove drift just in time falls in the breach of pumping board, makes to be in quick condition towards the line embedding groove drift; When the breach of pumping board slid off above the top of line embedding groove drift, the unsteady cushion block above the line embedding groove drift was captured between in line embedding groove drift installing hole, made to be in the drift operating state towards the line embedding groove drift; On lower bolster, be provided with simultaneously and the former that matches towards line embedding groove drift, correcting hole drift and fabrication hole drift.Billot is not all by manual feeding before the mould, billot is all by behind the mould, the opening mold controller, mould is worked automatically, whenever dash a step, go out one group of correcting hole and an open slot, the mould controller is controlled the cylinder operation of the floating punch of mould on corresponding step under program control, mould is covered a circulation under the control of controller, finish the processing of a punching.
The invention has the advantages that: the present invention utilizes high velocity ram machine, and its pressure adds general material bearing shelf and general step feeding device less than 80T; Mould divides two major parts, and some is that mould is controlled partly automatically, and another partly is the one-shot groove mould.By step feeding device and common high velocity ram machine interlock, automatic feeding of realization punch press periodic duty is finished a feeding, the band material can once realize dashing a groove after entering mould fully at least simultaneously, dash one group of correcting hole, band material can realize in mould that the hole more than three groups carries out correcting, the mould controller can be controlled jet-bedding drift or other towards the floating of shape drift, thereby realizes jet-bedding continuously or at interval, or other shape chamber beyond other flute profile.The present invention is intended to overcome existing blanking and piercing with combination tool method commonly used need use powerful device, large volume mould, deficiency that production efficiency is low, also overcome simultaneously the deficiency that numerical control device processing cost high product quality one is difficult to guarantee to property, provide a kind of novel jet-bedding the continuous new mode of stamping-out automatically, under the product quality premise that guarantees, used Device-Generalization, mould structure is simple, accurate positioning, easy to operate, the production efficiency height, constant product quality, the characteristics that production cost is low.
Description of drawings
Fig. 1 is a long preliminary linear electric motor primary lamination punch die structure schematic diagram of the present invention;
Fig. 2 is a jet-bedding drift quick condition schematic diagram of the present invention;
Fig. 3 is a jet-bedding drift punching view of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing 1 has provided a kind of schematic diagram of the present invention, the present invention relates to a kind of long preliminary linear electric motor primary lamination manufacture method as can be seen by accompanying drawing, adopt the continuously automatic stamping-out mode of jet-bedding, long preliminary linear electric motor primary lamination multiple-grooved is placed on the high velocity ram machine, finishes blank operation by the repeatedly continuously automatic stamping-out mode of the mould on the high velocity ram machine; And each punch press motion cycle of diel on the high velocity ram machine is only finished towards 1-2 opening line embedding groove, simultaneously towards 1-2 group correcting hole or other die cavity; All opening line embedding grooves on the long preliminary linear electric motor primary lamination and correcting hole or other die cavity are finished the blank operation requirement step by step by the continuously automatic stamping-out program of the circulation of a plurality of settings.
According to a kind of long preliminary linear electric motor primary lamination punch die that said method proposed as shown in Figure 1, comprise part of the upper die and part of the lower die, the part of the upper die comprises cope match-plate pattern 1 at least, on cope match-plate pattern 1, be fixed with upper mould fixed plate 3, be lined with upper die plate 2 between cope match-plate pattern 1 and the upper mould fixed plate 3, upper die plate 2 can be adjusted the height of cope match-plate pattern 1; Also be fixed with guider 7 at cope match-plate pattern 1, be with patrix guide plate 4 on the guider 7, the following pressing plate that also is fixed with of patrix guide plate 4 is pushed down when being used for punching and is dashed the non-punching part of material; The part of the lower die comprises counterdie fixed head 5 and lower bolster 6 at least, and lower bolster 6 is provided with the pilot hole for guider 7 guiding.
Be equipped with towards line embedding groove drift 8, correcting hole drift 9 and one or two fabrication hole drift 10 more than two at upper mould fixed plate 3, and towards line embedding groove drift 8 is floating punch, be provided with pumping board 11 on cope match-plate pattern 1, pumping board 11 can slide above the top of line embedding groove drift 8; Simultaneously, have and the breach 13 that matches towards line embedding groove drift top at pumping board 11, when above the top of 13 pairs of square impact line embedding grooves of breach drift 8 of pumping board 11, projection on the unsteady cushion block 14 above line embedding groove drift 8 just in time falls in the breach 13 of pumping board 11, makes to be in quick condition towards line embedding groove drift 8; When the breach 13 of pumping board 11 slid off above the top of line embedding groove drift 8, the unsteady cushion block 14 above line embedding groove drift 8 was captured between in line embedding groove drift 8 installing holes, made to be in the drift operating state towards line embedding groove drift 8; On lower bolster 6, be provided with simultaneously and the former that matches towards line embedding groove drift 8, correcting hole drift 9 and fabrication hole drift 10.
Between upper and lower mould, also be provided with transducer 8, the data that transducer 8 is gathered mold work, and data are sent to the mould control system, the mould control system by be installed on the mould entity sensor acquisition to the signal that moves up and down of mould, control the electromagnetically operated valve of floating punch corresponding cylinder on the corresponding mould by the numerical control plate, make the cylinder operation control floating punch work of the corresponding drift when needing step pitch.
Billot is not all by manual feeding before the mould, billot is all by behind the mould, the opening mold controller, mould is worked automatically, whenever dash a step, go out one group of correcting hole and an open slot, the mould controller is controlled the cylinder operation of the floating punch of mould on corresponding step under program control, mould is covered a circulation under the control of controller, finish the processing of a punching.
Jet-bedding drift floating junction composition of the present invention as shown in Figure 2, the shape at elementary lamination two ends is different with the middle part, if mould one-shot groove continuous operation then can not go out satisfactory shape, the ending of a circulation and at the first bruss one-shot groove drift do not need work, drift does not contact with lower die, other operating time then drift contact with die.Pumping board and cylinder rod link, and cylinder rod advances or drives the pumping board rectilinear motion when retreating, and drive the float inclined-plane of cushion block of drift by the inclined-plane on the pumping board simultaneously and move up and down, and float thereby drive drift.
The present invention utilizes high velocity ram machine, and its pressure adds general material bearing shelf and general step feeding device less than 80T; Mould divides two major parts, and some is that mould is controlled partly automatically, and another partly is the one-shot groove mould.By step feeding device and common high velocity ram machine interlock, automatic feeding of realization punch press periodic duty is finished a feeding, the band material can once realize dashing a groove after entering mould fully at least simultaneously, dash one group of correcting hole, band material can realize in mould that the hole more than three groups carries out correcting, the mould controller can be controlled jet-bedding drift or other towards the floating of shape drift, thereby realizes jet-bedding continuously or at interval, or other shape chamber beyond other flute profile.The present invention is intended to overcome existing blanking and piercing with combination tool method commonly used need use powerful device, large volume mould, deficiency that production efficiency is low, also overcome simultaneously the deficiency that numerical control device processing cost high product quality one is difficult to guarantee to property, provide a kind of novel jet-bedding the continuous new mode of stamping-out automatically, under the product quality premise that guarantees, used Device-Generalization, mould structure is simple, accurate positioning, easy to operate, the production efficiency height, constant product quality, the characteristics that production cost is low.
Claims (7)
1. one kind long preliminary linear electric motor primary lamination manufacture method, it is characterized in that: adopt the continuously automatic stamping-out mode of jet-bedding, long preliminary linear electric motor primary lamination multiple-grooved is placed on the high velocity ram machine, finishes blank operation by the repeatedly continuously automatic stamping-out mode of the mould on the high velocity ram machine; And each punch press motion cycle of diel on the high velocity ram machine is only finished towards 1-2 opening line embedding groove, simultaneously towards 1-2 group correcting hole or other die cavity; All opening line embedding grooves on the long preliminary linear electric motor primary lamination and correcting hole or other die cavity are finished the blank operation requirement step by step by the continuously automatic stamping-out program of the circulation of a plurality of settings.
2. long preliminary linear electric motor primary lamination manufacture method as claimed in claim 1, it is characterized in that: because the shape at elementary lamination two ends is different with the middle part, if mould one-shot groove continuous operation then can not go out satisfactory shape, the ending of a circulation and at the first bruss one-shot groove drift do not need work, drift does not contact with lower die, other operating time then drift contact with die.
3. long preliminary linear electric motor primary lamination manufacture method as claimed in claim 2, it is characterized in that: pumping board and cylinder rod link, cylinder rod advances or drives the pumping board rectilinear motion when retreating, inclined-plane by the unsteady cushion block of the drive of the inclined-plane on pumping board drift moves up and down simultaneously, floats thereby drive drift.
4. one kind long preliminary linear electric motor primary lamination punch die, comprise part of the upper die and part of the lower die, the part of the upper die comprises cope match-plate pattern at least, is fixed with upper mould fixed plate on cope match-plate pattern, be lined with upper die plate between cope match-plate pattern and the upper mould fixed plate, upper die plate can be adjusted the height of cope match-plate pattern; Also be fixed with guider at cope match-plate pattern, be with the patrix guide plate on the guider, the following pressing plate that also is fixed with of patrix guide plate is pushed down when being used for punching and is dashed the non-punching part of material; The part of the lower die comprises counterdie fixed head and lower bolster at least, and lower bolster is provided with the pilot hole for the guider guiding; It is characterized in that: be equipped with towards line embedding groove drift, correcting hole drift and one or two fabrication hole drift more than two at upper mould fixed plate, and towards the line embedding groove drift is floating punch, be provided with pumping board on cope match-plate pattern, pumping board can slide above the top of line embedding groove drift.
5. long preliminary linear electric motor primary lamination punch die as claimed in claim 4, it is characterized in that: have and the breach that matches towards line embedding groove drift top at pumping board, when the breach of pumping board to the top of square impact line embedding groove drift above the time, projection on the unsteady cushion block above the line embedding groove drift just in time falls in the breach of pumping board, makes to be in quick condition towards the line embedding groove drift; When the breach of pumping board slid off above the top of line embedding groove drift, the unsteady cushion block above the line embedding groove drift was captured between in line embedding groove drift installing hole, made to be in the drift operating state towards the line embedding groove drift.
6. long preliminary linear electric motor primary lamination punch die as claimed in claim 5 is characterized in that: be provided with on lower bolster and the former that matches towards line embedding groove drift, correcting hole drift and fabrication hole drift.
7. long preliminary linear electric motor primary lamination punch die as claimed in claim 5, it is characterized in that: billot is not all by manual feeding before the mould, billot is all by behind the mould, the opening mold controller, mould is worked automatically, whenever dashes a step, go out one group of correcting hole and an open slot, the mould controller is controlled the cylinder operation of the floating punch of mould on corresponding step under program control, mould is covered a circulation under the control of controller, finish the processing of a punching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110077690 CN102158017B (en) | 2011-03-30 | 2011-03-30 | Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110077690 CN102158017B (en) | 2011-03-30 | 2011-03-30 | Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor |
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| Publication Number | Publication Date |
|---|---|
| CN102158017A true CN102158017A (en) | 2011-08-17 |
| CN102158017B CN102158017B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110077690 Active CN102158017B (en) | 2011-03-30 | 2011-03-30 | Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264092A (en) * | 2013-05-15 | 2013-08-28 | 昆山电子羽电业制品有限公司 | Punching blanking die |
| CN106363074A (en) * | 2015-07-22 | 2017-02-01 | 深圳市鸿源浩进科技有限公司 | Motor chip punching device and method |
| CN109038968A (en) * | 2018-08-20 | 2018-12-18 | 宁波菲仕电机技术有限公司 | The production method of linear motor magnet steel fixed plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988332A (en) * | 2006-11-17 | 2007-06-27 | 梁树明 | Full automatic compounding process and mould for household motor shell |
| CN200981087Y (en) * | 2006-07-07 | 2007-11-28 | 慈溪市鸿达电机模具制造中心 | Long stator iron core punching sheet press die for magnetic suspension straight generator |
| CN201493398U (en) * | 2009-05-31 | 2010-06-02 | 四川川润股份有限公司 | Composite multi-station punching die |
-
2011
- 2011-03-30 CN CN 201110077690 patent/CN102158017B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981087Y (en) * | 2006-07-07 | 2007-11-28 | 慈溪市鸿达电机模具制造中心 | Long stator iron core punching sheet press die for magnetic suspension straight generator |
| CN1988332A (en) * | 2006-11-17 | 2007-06-27 | 梁树明 | Full automatic compounding process and mould for household motor shell |
| CN201493398U (en) * | 2009-05-31 | 2010-06-02 | 四川川润股份有限公司 | Composite multi-station punching die |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103264092A (en) * | 2013-05-15 | 2013-08-28 | 昆山电子羽电业制品有限公司 | Punching blanking die |
| CN106363074A (en) * | 2015-07-22 | 2017-02-01 | 深圳市鸿源浩进科技有限公司 | Motor chip punching device and method |
| CN109038968A (en) * | 2018-08-20 | 2018-12-18 | 宁波菲仕电机技术有限公司 | The production method of linear motor magnet steel fixed plate |
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|---|---|
| CN102158017B (en) | 2013-06-05 |
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Owner name: ZHUZHOU NANCHE ELECTROMECHANICAL TECHNOLOGY CO., L Free format text: FORMER OWNER: ZHUZHOU NATIONAL ENGINEERING RESEARCH CENTER OF CONVERTERS CO., LTD. Effective date: 20130906 |
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Application publication date: 20110817 Assignee: Hunan CSR special electric equipment Co., Ltd. Assignor: ZHUZHOU CSR ELECTROMECHANICAL TECHNOLOGY CO.,LTD. Contract record no.: 2015430000136 Denomination of invention: Manufacturing method and trimming die for primary iron core disk of long primary linear electric motor Granted publication date: 20130605 License type: Exclusive License Record date: 20150906 |
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Address after: 412001 Shifeng District Hongqi Road Zhuzhou city of Hunan Province, No. 289 Patentee after: CRRC ZHUZHOU MECHANICAL AND ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 412001 Shifeng District Hongqi Road Zhuzhou city of Hunan Province, No. 289 Patentee before: ZHUZHOU CSR ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20210419 Address after: 441000 No.1, North Wolong Avenue, high tech Zone, Xiangyang City, Hubei Province Patentee after: XIANGYANG CRRC ELECTRIC MACHINERY Co.,Ltd. Address before: 412001 Shifeng District Hongqi Road Zhuzhou city of Hunan Province, No. 289 Patentee before: CRRC ZHUZHOU MECHANICAL AND ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20230601 Address after: 441000 No.1 Wolong Avenue North, high tech Zone, Xiangyang City, Hubei Province Patentee after: XIANGYANG CRRC ELECTRIC MACHINERY CO.,LTD. Patentee after: CRRC ZHUZHOU MECHANICAL AND ELECTRONIC TECHNOLOGY CO.,LTD. Address before: 441000 No.1 Wolong Avenue North, high tech Zone, Xiangyang City, Hubei Province Patentee before: XIANGYANG CRRC ELECTRIC MACHINERY CO.,LTD. |