CN104259312A - Automatic transposition riveting forming blanking die of motor rotor iron core - Google Patents
Automatic transposition riveting forming blanking die of motor rotor iron core Download PDFInfo
- Publication number
- CN104259312A CN104259312A CN201410462896.5A CN201410462896A CN104259312A CN 104259312 A CN104259312 A CN 104259312A CN 201410462896 A CN201410462896 A CN 201410462896A CN 104259312 A CN104259312 A CN 104259312A
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- Prior art keywords
- punch
- die
- blanking
- counterdie
- gear
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses an automatic transposition riveting forming blanking die of a motor rotor iron core and belongs to the technical field of rotor iron core manufacturing. The die comprises an upper die and a corresponding lower die which are mounted on a punch respectively, the upper die can be moved close to or away from the lower die through vertical movement of the punch, the upper die is provided with a plurality of cylinders and a plurality of male dies, and the lower die is sequentially provided with female dies corresponding to the male dies at corresponding positions and a 120 mechanical transposition mechanism. The automatic transposition riveting forming blanking die of the motor rotor iron core can achieve blanking processes of regular gap blanking, front and back surface blanking, punching of large and small holes, finishing of center holes, automatic turning riveting forming of each pieces. The automatic transposition riveting forming blanking die is applicable to assembly of motors on a production line, so that the failure rate in every procedure is sharply decreased, the processes are optimized and the procedures are reduced, the production efficiency is significantly improved, and the quality is stable.
Description
Technical field
The invention belongs to rotor core manufacturing technology field, in particular to a kind of automatic displacement riveting molding blanking die of motor rotor iron core, the difference that solves that central hole size is restive, stamping-out section has sharp burr, concentricity and material stock thickness uneven etc. causes that dynamic balancing is poor, quality is unstable and the problem such as the manufacturing cost of motor height.
Background technology
Along with the fast development of die industry, precision of stamping parts also constantly promotes, and traditional moulds still can not meet the technical requirement that motor manufactures, and limits the development of whole industry.The deficiency that traditional moulds still exists comprises: 1) monolithic punching process: manually rotate freely wrong sheet to correct dynamic balancing through air-blowing frock, fold riveting by frock last item again and form rotor, the external diameter of rotor, the irregular deviation of winding displacement groove are large and the uneven direct rear operation affecting motor of rotor wrong blade number is assembled and quality stability is poor, and the many efficiency of operation is low; 2) automatic riveting punching process: the vertical rotor of group is failed to realize every sheet and to be interlocked the factors such as form and position tolerance (concentricity) that rotary shifted and stamping-out self exists, material thickness ununiformity be even, causes the whole dynamic balance of rotor poor; 3) automatic displacement riveting molding punching process: indexing mechanism is will quadrature and increase that to add small-sized Lamination mould Design and manufacture difficulty that angle rotates, equipment requirement height and mould and equipment investment cost very large in additional equipment drive and installation site.There is following defect in the rotor core that traditional moulds manufacture obtains in addition: because of with first-class problem, and when assembling motor, fraction defective is high; And there is the cut-out burr of stamping-out the upper surface of rotor, easily scrapes disconnected during coiling and scratch line bag.
For the shortcoming that existing technology exists, urgently a kind of blanking die of automatic displacement riveting molding.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of automatic displacement riveting molding blanking die of motor rotor iron core, mould of the present invention has can realize regular clearance blanking, positive and negative stamping-out, rush the blanking die structure of large aperture, centre bore finishing, every sheet automatic corner degree riveting molding etc.
Object of the present invention is achieved through the following technical solutions: a kind of automatic displacement riveting molding blanking die of motor rotor iron core, comprise patrix and corresponding counterdie two parts, described upper die and lower die are arranged on punch press respectively, described patrix can be moved up and down by punch press and carry out clutch with counterdie, described patrix is tabular, described patrix is disposed with the first guide pin hole punch, fan-shaped punch I, fan-shaped die, chamfering die, second guide pin hole punch, Large central aperture punch, little centre bore punch, finishing centre hole punch, rush riveting point punch, press a punch, pre-cut punch, blanking punch, described counterdie is tabular, described counterdie is provided with the die corresponding with each punch in patrix and is provided with the punch corresponding with each die of patrix,
The blanking punch of described patrix and the blanking die place of counterdie are provided with 120 degree of mechanical indexing mechanisms;
Fan-shaped punch I, Large central aperture punch on described patrix, rush on riveting point punch and be connected to cylinder, the fan-shaped punch II on described counterdie is connected with cylinder.
Described fan-shaped punch I, fan-shaped die, chamfering die, Large central aperture punch, little centre bore punch, finishing centre hole punch, rush riveting point punch, a punch that presses, pre-cut punch, blanking punch be 3, the first guide pin hole punch and the second guide pin hole punch are 2;
Described cylinder is connected with magnetic valve, and the punch that cylinder is connected by solenoid control realizes punching press.
120 degree of described mechanical indexing mechanisms, comprise location guide pin, ceramic die, die socket, the first gear and rotating mechanism; Described location guide pin is arranged at the outside of blanking punch, corresponding when punching press with the die socket on counterdie; Described ceramic die is arranged at inside die socket, and described die socket arranged outside has the first gear, and the first gear can carry out 120 degree of transpositions under the drive of the rotating mechanism be connected.
Described rotating mechanism comprises rotary tapered wedge, fairlead, rotary main shaft and the second gear, and described fairlead is arranged at counterdie, realizes segmentation angle and location; Described rotary tapered wedge, rotary main shaft and spring are arranged at fairlead from top to bottom, and rotary tapered wedge stretches out the plate face of counterdie, are convenient to patrix and move downward realization startup rotation when undershoot; The second described gear is positioned at outside rotary main shaft, and described rotary main shaft can drive the second gear to rotate; The second described gear and the first gear carry out gear and are connected.
The punching process such as mould process of the present invention can realize regular clearance blanking, positive and negative stamping-out, rushes large aperture, centre bore finishing, every sheet automatic corner degree riveting molding; The clearance blanking controlling positive and negative, large aperture, riveting point is completed by magnetic valve and cylinder, the burr face of stamping-out increases chamfering process, the special-shaped centre bore coordinated with axle increases finishing (ensureing aperture size, morpheme dimensional accuracy and fineness), and the 120 degree of indexing mechanisms more importantly counterdie pottery die being equipped with rectilinear motion Purely mechanical complete every sheet and to interlock transposition 120 degree of riveting moldings; Product is one group of appointment sheet number after mould is released, upper and lower surface is arc profile, specifies large aperture position, 0.003mm precision centre bore, often sheet transposition 120 degree of regular global facilities namely to complete qualified rotor core.
The present invention has following advantage and effect relative to prior art:
1. mould of the present invention can complete stamping-out, the wrong sheet of automatic rotation and automatic single location riveted joint composition finished product rotor, overcomes in traditional moulds technique and needs manually to rotate assembling that wrong sheet brings extremely and the poor and how inefficient defect of operation of quality stability.
2. in the present invention, on mould, add mechanical indexing mechanism, achieve punching and complete rotary riveting in mould, the little punching overcoming traditional moulds structure can not the wrong sheet of Rotating with Uniform, and the Concentricity tolerance of stamping-out self, material thickness ununiformity are even causes the defects such as dynamic balancing difference.
3. in 120 degree of mechanical indexing mechanisms, be present in counterdie in mould of the present invention, and this transposition does not need other power to provide, location guide pin and die socket, for providing accurate location after transposition, overcome the defects such as the small-sized Lamination mould Design and manufacture difficulty of the big angle rotary of traditional moulds structure and equipment requirement height and mould and equipment investment cost are very large.
4. in mould of the present invention, direction, gouged spews face is provided with fan-shaped punch and chamfering punch, ensure for reverse stamping-out the burr face that rotor upper and lower end face is arc surface and revises in punching, the gouged spews face avoiding finished product rotor core is scraped when coiling disconnected or scratches the defects such as line bag.
Accompanying drawing explanation
Below in conjunction with Figure of description, further detailed description is done to patent of the present invention, wherein:
Fig. 1 is the structural representation of mould of the present invention;
Fig. 2 is 120 degree of mechanical indexing mechanism structural representations of the present invention;
Fig. 3 is workflow schematic diagram of the present invention;
Fig. 4 is the structural representation of the product of punching of the present invention;
Fig. 5 is the product side structure schematic diagram of punching of the present invention;
Wherein, 1 patrix, 2 counterdies, 3 first guide pin hole punch, 4 fan-shaped punch I, 5 fan-shaped dies, 6 cylinders, 7 fan-shaped punch II, 8 chamfering dies, 9 second guide pin hole punch, 10 Large central aperture punch, 11 little centre bore punch, 12 finishing centre hole punch, 13 rush riveting point punch, 14 press a punch, 15 pre-cut punch, 16 blanking punches, 17 indexing mechanisms, 18 rush guide pin hole I, 19 square impacts are fan-shaped, 20 recoils are fan-shaped, 21 burr surface chamfers, 22 rush guide pin hole II, 23 rush Large central aperture, 24 rush little centre bore, 25 finishing centre holes, 26 rush riveting spot hole, 27 belling riveting points, 28 pre-cut profiles, 29 location blanking riveting moldings, 30 location guide pins, 31 ceramic dies, 32 die sockets, 33 first gears, 34 rotary tapered wedges, 35 fairleads, 36 second gears, 37 rotary main shafts, 38 springs, 39 punchings.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the invention provides a kind of automatic displacement riveting molding blanking die of motor rotor iron core, comprise patrix 1 and corresponding counterdie 2 two parts, described patrix 1 and counterdie 2 are arranged on punch press respectively, described patrix 1 can be moved up and down by punch press and carry out clutch with counterdie 2, described patrix 1 is tabular, described patrix 1 is disposed with the first guide pin hole punch 3, fan-shaped punch I 4, fan-shaped die 5, chamfering die 8, second guide pin hole punch 9, Large central aperture punch 10, little centre bore punch 11, finishing centre hole punch 12, rush riveting point punch 13, press a punch 14, pre-cut punch 15, blanking punch 16, described counterdie 2 is provided with the die corresponding with each punch in patrix 1 and is provided with the punch corresponding with each die of patrix 1,
The blanking punch 16 of described patrix 1 is provided with 120 degree of mechanical indexing mechanisms 17 with the blanking die place of counterdie;
Described fan-shaped punch I 4, fan-shaped die 5, chamfering die 8, Large central aperture punch 10, little centre bore punch 11, finishing centre hole punch 12, rush riveting point punch 13, the punch 14 that presses, pre-cut punch 15, blanking punch 16 be 3, the first guide pin hole punch 3 and the second guide pin hole punch 9 are 2;
Fan-shaped punch I 4, Large central aperture punch 10 on described patrix, rush on riveting point punch 13 be connected to cylinder 6(totally 3), the fan-shaped punch II 7 on described counterdie is connected with cylinder.
Described cylinder 6 is connected with magnetic valve, and the punch that cylinder 6 is connected by solenoid control realizes punching press.
As shown in Figure 3, often organizing motor rotor core stamping punching process composition operation is: rush that little guide pin hole 18, square impact are fan-shaped 19, fan-shaped 20, the burr surface chamfer 21 of recoiling, rush large guide pin hole 22, rush Large central aperture 23, rush little centre bore 24, finishing centre hole 25, rush riveting spot hole 26, belling riveting point 27, pre-cut profile 28, location blanking riveting molding 29, wherein, rush the operation in guide pin hole 18 and 22 respectively containing two groups of punch and matrixes, all the other operations are respectively containing three groups of punch and matrixes.
The operation principle of mould of the present invention: as shown in Figures 1 to 3, complete at the guide pin hole punch 3 of described patrix 1 and rush little guide pin hole operation 18, first cylinder controls fan-shaped punch I 4 and completes the fan-shaped operation 19(of square impact and rush 1,33 skies), second cylinder controls counterdie fan-shaped punch II 7 and coordinates fan-shaped die 5 to complete empty 33 punchings 1 of the fan-shaped operation 20(of recoil), chamfering punch 8 completes burr surface chamfer reparing process 21, guide pin hole punch 9 completes and rushes large guide pin hole operation 22, 3rd cylinder control Large central aperture punch 10 complete rush Large central aperture operation 23(and rush 14,20 skies), little centre bore punch 11 completes and rushes little centre bore operation 24, finishing centre hole punch 12 completes the finishing process 25 of finishing centre hole, four-cylinder controls to rush riveting point punch 13 and completes punch rivet holes operation 26(and rush 33,1 sky), the riveted holes (through hole) of this operation stamping-out is for the isolation between rotor core unit, the punch 14 that presses completes the hole operation 27(that is riveted and presses 1,33 skies), this operation forms the riveting position of convex-concave, pre-cut punch 15 completes pre-cut profile blank operation 28, this operation realizes punching pre-cut, blanking punch 16 completes location blanking riveting molding operation 29, counterdie 2 relevant position is provided with the punch of described patrix 1, die and the punch of the corresponding same quantity of die complete punching process work flow, realize through blanking punch location and 120 degree mechanical indexing mechanisms 17 (as shown in Figure 2) riveted joint also ejection die namely complete the qualified rotor core (as shown in Figure 4 and Figure 5) of 34 layers of punchings 39 composition.
As shown in Figure 2,120 degree of mechanical indexing mechanisms 17 of the present invention, comprise location guide pin 30, ceramic die 31, die socket 32, first gear 33 and rotating mechanism; Described location guide pin 30 is arranged at the outside of blanking punch 16, corresponding when punching press with the die socket 32 on counterdie; Described ceramic die 31 is arranged at inside die socket 32, and described die socket 32 arranged outside has the first gear 33, first gear 33 can carry out 120 degree of rotations under the second gear driven of the rotating mechanism be connected.
Described rotating mechanism comprises rotary tapered wedge 34, fairlead 35, rotary main shaft 37 and the second gear 36, and described fairlead 35 is arranged at counterdie, realizes segmentation angle and location; Described rotary tapered wedge 34, rotary main shaft 37 and spring 38 are arranged at fairlead 35 from top to bottom, and rotary tapered wedge 34 stretches out the plate face with counterdie 2, are convenient to patrix and move downward realization startup rotation when undershoot; The second described gear 36 is positioned at outside rotary main shaft 37, and described rotary main shaft 37 can drive the second gear 36 to rotate; The second described gear 36 carries out gear with the first gear 33 and is connected.
The operation principle of above-mentioned 120 degree mechanical indexing mechanisms 17 is: patrix 1 moves downward and promotes rotary tapered wedge 34, rotary tapered wedge 34 promotes rotary main shaft 37 again and moves downward, rotary main shaft 37 compresses at rotary tapered wedge 34 and spring 38(when departing from fairlead 35) effect under rotary main shaft 37 and the second gear 36 do the rotation of 60 degree, the first gear 33 and die socket 32 is driven under the second gear 36 rotates, the rotation of 120 degree done by pottery die 31, patrix 1 continues to move downward all rotating part rotary motions to be completed and only makes downward rectilinear motion, location guide pin 30 enters the position that die socket 32 makes fine positioning pottery die 31, patrix 1 continues downward stripper and pushes down material strip (shown in Fig. 3), patrix spring-compressed blanking punch 16 stretches out the first positioning center hole (completing blank operation 28 through pre-cut punch 15) of stripper, blanking punch 16 is released punching again and is entered ceramic die 31 and carry out riveting molding from material strip, patrix 1 has moved downward (bottom dead centre of mould and punch press).Under punch press effect, patrix 1 starts to move upward, spring 38(resets) promote rotary main shaft 37 and rotary tapered wedge 34 and move upward, rotary main shaft 37 enters fairlead 35, blanking punch 16 departs from ceramic die 31, the patrix 1 location guide pin 30 that continues to move upward departs from die socket 32, patrix spring reset stripper exceeds blanking punch 16 and location guide pin 30, punch press moves to peak (punch press and mould top dead-centre) rotary main shaft 37 and rotary tapered wedge 34 and move upward to peak and rotary tapered wedge 34 and patrix depart from and have certain distance, start to start and work (repeating last operation principle) next time, rotor for motor iron core (as shown in Figure 4 and Figure 5) is obtained after completing 34 layers of punchings 39 riveted joint manufacture.
The punching process such as mould process of the present invention can realize regular clearance blanking, positive and negative stamping-out, rushes large aperture, centre bore finishing, every sheet automatic corner degree riveting molding; The clearance blanking controlling positive and negative, large aperture, riveting point is completed by magnetic valve and cylinder, the burr face of stamping-out increases chamfering process, the special-shaped centre bore coordinated with axle increases finishing (ensureing aperture size, morpheme dimensional accuracy and fineness), and the 120 degree of indexing mechanisms more importantly counterdie pottery die being equipped with rectilinear motion Purely mechanical complete every sheet and to interlock transposition 120 degree of riveting moldings; Product is one group of appointment sheet number after mould is released, upper and lower surface is arc profile, specifies large aperture position, 0.003mm precision centre bore, often sheet transposition 120 degree of regular global facilities namely to complete qualified rotor core.
Must be pointed out; some non-restrictive explanations that above-described embodiment is just made patent of the present invention; but person of skill in the art will appreciate that; can make amendment to patent of the present invention under the aim not departing from patent of the present invention and scope, replace and change, these amendments, replacement and change still belong to the protection domain of patent of the present invention.
Claims (5)
1. the automatic displacement riveting molding blanking die of a motor rotor iron core, comprise patrix and corresponding counterdie two parts, described upper die and lower die are arranged on punch press respectively, and described patrix can be moved up and down by punch press and carry out clutch with counterdie, it is characterized in that:
Described patrix is tabular, described patrix is disposed with the first guide pin hole punch, fan-shaped punch I, fan-shaped die, chamfering die, the second guide pin hole punch, Large central aperture punch, little centre bore punch, finishing centre hole punch from feedstock direction, rushes riveting point punch, a punch that presses, pre-cut punch, blanking punch, described counterdie is tabular, and described counterdie is provided with the die corresponding with each punch in patrix and is provided with the punch corresponding with each die of patrix;
The blanking punch of described patrix and the blanking die place of counterdie are provided with 120 degree of mechanical indexing mechanisms;
Fan-shaped punch I, Large central aperture punch on described patrix, rush on riveting point punch and be connected to cylinder, the fan-shaped punch II on described counterdie is connected with cylinder.
2. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, it is characterized in that: described fan-shaped punch I, fan-shaped die, chamfering die, Large central aperture punch, little centre bore punch, finishing centre hole punch, rush riveting point punch, a punch that presses, pre-cut punch, blanking punch be 3, the first guide pin hole punch and the second guide pin hole punch are 2.
3. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, is characterized in that: described cylinder is connected with magnetic valve.
4. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, is characterized in that: 120 degree of described mechanical indexing mechanisms comprise location guide pin, ceramic die, die socket, the first gear and rotating mechanism; Described location guide pin is arranged at the outside of blanking punch, corresponding when punching press with the die socket on counterdie; Described ceramic die is arranged at inside die socket, and described die socket arranged outside has the first gear, and the first gear can carry out 120 degree of transpositions under the drive of the rotating mechanism be connected.
5. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 4, is characterized in that: described rotating mechanism comprises rotary tapered wedge, fairlead, rotary main shaft and the second gear, and described fairlead is arranged at counterdie; Described rotary tapered wedge, rotary main shaft and spring are arranged at fairlead from top to bottom, and rotary tapered wedge stretches out the plate face with counterdie; The second described gear is positioned at outside rotary main shaft, and described rotary main shaft can drive the second gear to rotate; The second described gear and the first gear carry out gear and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462896.5A CN104259312B (en) | 2014-09-12 | 2014-09-12 | A kind of automatic displacement riveting molding blanking die of motor rotor iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462896.5A CN104259312B (en) | 2014-09-12 | 2014-09-12 | A kind of automatic displacement riveting molding blanking die of motor rotor iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104259312A true CN104259312A (en) | 2015-01-07 |
| CN104259312B CN104259312B (en) | 2017-09-15 |
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| CN201410462896.5A Active CN104259312B (en) | 2014-09-12 | 2014-09-12 | A kind of automatic displacement riveting molding blanking die of motor rotor iron core |
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| CN (1) | CN104259312B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195613A (en) * | 2015-09-30 | 2015-12-30 | 四川腾邦摩托车配件有限公司 | Progressive punching die used for machining eight-level stator iron core and small skeleton iron core |
| CN105855402A (en) * | 2016-06-16 | 2016-08-17 | 王建武 | Production mechanism for ten-toothed riveting iron core |
| CN106077290A (en) * | 2016-06-27 | 2016-11-09 | 上海电气集团上海电机厂有限公司 | A kind of streamline intelligence transposition punch die |
| CN111001705A (en) * | 2019-11-29 | 2020-04-14 | 江阴华新电器科技股份有限公司 | Stamping progressive die for three-piece combined jacking of motor stator and rotor iron cores |
| CN113165044A (en) * | 2018-11-20 | 2021-07-23 | 罗伯特·博世有限公司 | Multi-layer blanking method and device for producing metal parts, such as rotor and stator laminations for electric motors |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105195613A (en) * | 2015-09-30 | 2015-12-30 | 四川腾邦摩托车配件有限公司 | Progressive punching die used for machining eight-level stator iron core and small skeleton iron core |
| CN105855402A (en) * | 2016-06-16 | 2016-08-17 | 王建武 | Production mechanism for ten-toothed riveting iron core |
| CN105855402B (en) * | 2016-06-16 | 2017-11-24 | 东莞市建嘉实业有限公司 | A kind of production mechanism of ten teeth riveting iron core |
| CN106077290A (en) * | 2016-06-27 | 2016-11-09 | 上海电气集团上海电机厂有限公司 | A kind of streamline intelligence transposition punch die |
| CN106077290B (en) * | 2016-06-27 | 2017-11-24 | 上海电气集团上海电机厂有限公司 | A kind of streamline intelligence transposition punch die |
| CN113165044A (en) * | 2018-11-20 | 2021-07-23 | 罗伯特·博世有限公司 | Multi-layer blanking method and device for producing metal parts, such as rotor and stator laminations for electric motors |
| CN111001705A (en) * | 2019-11-29 | 2020-04-14 | 江阴华新电器科技股份有限公司 | Stamping progressive die for three-piece combined jacking of motor stator and rotor iron cores |
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| CN104259312B (en) | 2017-09-15 |
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Inventor after: Dan Yutong Inventor after: Wu Gang Inventor after: Zhang Haishen Inventor after: Wen Zhibo Inventor after: Tai Xiaoqian Inventor before: Yi Qin Inventor before: Wu Gang Inventor before: Zhang Haishen Inventor before: Tai Xiaoqian |
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Effective date of registration: 20170915 Address after: 518129, Guangdong City, Longgang province Shenzhen District Bantian Street snow like Village Ho Industrial City, the only Industrial Park Patentee after: Shenzhen true motor development Co., Ltd. Address before: 518000, Guangdong, Shenzhen City, Longgang province Buji snow like industrial city, Ho Industrial Park Patentee before: Shenzhen Weizhen Motor Co., Ltd. |