CN111740555A - Manufacturing method of magneto stator core - Google Patents
Manufacturing method of magneto stator core Download PDFInfo
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- CN111740555A CN111740555A CN202010730527.5A CN202010730527A CN111740555A CN 111740555 A CN111740555 A CN 111740555A CN 202010730527 A CN202010730527 A CN 202010730527A CN 111740555 A CN111740555 A CN 111740555A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
- H02K15/026—Wound cores
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Abstract
A manufacturing method of a magneto stator core comprises the following steps: 1) each iron core punching sheet of the magneto stator iron core is designed into a pole foot punching sheet and a main body punching sheet which are respectively and independently punched and formed, a plurality of dovetail grooves for fixing the pole foot punching sheet are distributed on the periphery of the main body punching sheet, and a dovetail structure is arranged at one end of the pole foot punching sheet; 2) installing a punching die for punching the main body punching on a progressive die, and independently punching and molding the main body punching on a plate through progressive punching; 3) installing a punching die for punching the pole leg punching sheet on a progressive die, and independently punching and molding the pole leg punching sheet on a plate by progressive punching; 4) overlapping, riveting and fixing the plurality of main body punching sheets to form a stator core main body, and overlapping, riveting and fixing the plurality of pole foot punching sheets to form a stator core pole foot; 5) and pressing the dovetail structures of the pole feet of the plurality of stator cores into dovetail grooves of the stator core main body by a press to be fixed in an interference fit manner to form the stator core.
Description
Technical Field
The invention relates to the field of motor iron core manufacturing, in particular to a manufacturing method of a magneto stator iron core.
Background
The circumference of the existing magneto stator core is provided with a plurality of pole feet used for winding, the magneto stator core is a laminated core generally and is formed by laminating a plurality of core punching sheets, each core punching sheet is a single-sheet integral blanking when being manufactured, and then the core punching sheets of corresponding quantity are overlapped together to form the magneto stator core fixedly according to the total lamination thickness requirement of the core. At present, the iron core stamped steel is manufactured by adopting a single-piece integral blanking process, so that the iron core stamped steel has the following defects: firstly, because the circumference of each iron core punching sheet is provided with a plurality of pole feet which radially extend, the whole occupied area of each iron core punching sheet is larger, see the attached figure 6 in the specification, no matter how the iron core punching sheet is arranged on a progressive punching die, after the entity part of the iron core punching sheet is cut out by punching, more steel scraps can be left for manufacturing the steel plate of the iron core punching sheet, the effective utilization rate of the steel plate is low, more steel scraps are generated, the recycling price of the steel scraps is far lower than the price of buying the steel scraps, and when each product is shared, the steel use cost of a single product is higher; secondly, each iron core punching sheet is integrally punched, cut and blanked, the required punching equipment has large requirement on tonnage, the equipment with large tonnage is high in price, and the energy consumption, maintenance and repair cost of the equipment are increased, so that the energy conservation and the cost reduction are not facilitated; thirdly, because each iron core punching sheet is an integral punching, cutting and blanking sheet, the punching area of each iron core punching sheet is large, so that the manufacturing cost of a punching die is high, for example, the punching die manufacturing cost of the stator iron core punching sheet of an 8-pole magneto of a CG125 model motorcycle needs 12 ten thousand RMB, and the punching die storage burden of small and medium-sized enterprises is increased. The existing defects cause high production cost of enterprises and are not beneficial to the management and control of the enterprise cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a manufacturing method of a stator core of a magneto, which can greatly reduce the production cost of enterprises, and the technical scheme of the invention is as follows:
a manufacturing method of a magneto stator core comprises the following steps:
1) each iron core punching sheet of a magneto stator iron core is designed into a pole leg punching sheet which is formed by independent punching respectively, and a main body punching sheet which comprises a yoke part, wherein a plurality of dovetail grooves used for fixing the pole leg punching sheet are distributed on the periphery of the main body punching sheet, and one end of the pole leg punching sheet is provided with a dovetail structure used for being connected with the main body punching sheet;
2) installing a punching die for punching the main body punching sheets on a progressive die, so that the waste material area between the main body punching sheets distributed on the plate is reduced, and independently punching and forming the main body punching sheets on the plate in sequence through progressive punching;
3) installing a punching die for punching the pole leg punching sheets on a progressive die, so that the waste material area among the pole leg punching sheets distributed on the plate is reduced, and independently punching and forming the pole leg punching sheets on the plate in sequence through progressive punching;
4) overlapping, riveting and fixing the plurality of main body punching sheets to form a stator core main body, and overlapping, riveting and fixing the plurality of pole foot punching sheets to form a stator core pole foot;
5) and a plurality of stator core pole feet respectively correspond to the dovetail grooves on the stator core main body through dovetail structures, and the dovetail structures of the plurality of stator core pole feet are simultaneously pressed into the dovetail grooves corresponding to the stator core main body by a press to form interference fit fixation so as to form the stator core.
At least two riveting concave-convex points are formed on each main body punching sheet and each pole foot punching sheet in a blanking mode, so that the overlapped punching sheets form fixed connection through the riveting concave-convex points during riveting.
In the step 2), a die for blanking the pole leg punching sheet is arranged at the position of the central round hole for blanking the main body punching sheet on the progressive die, and a pole leg punching sheet is blanked by utilizing waste materials of the central round hole.
The blanking forming of the main body punching sheet adopts a first die and a second die, and the blanking forming of the pole foot punching sheet adopts a first die and a fourth die.
The main body punching sheets are arranged in two rows on the plate, and the main body punching sheets between the two rows are distributed in a staggered mode.
The pole foot punching sheets are symmetrically arranged in two rows on the plate, and the pole foot punching sheets in each row are distributed in a staggered manner.
And 5) plastically packaging the periphery of the stator core main body and four sides of the stator core pole feet after the stator core is formed.
By adopting the technical scheme, each iron core punching sheet of the magneto stator iron core is designed into a pole foot punching sheet which is respectively and independently punched and formed, and a main body punching sheet comprising a yoke part, wherein the dovetail structure of the pole foot punching sheet riveted and fixed in the step 4) is fixed with the dovetail groove on the riveted and fixed main body punching sheet in an interference fit manner by a press, the manufacturing method of the magneto stator core has the advantages that the main body punching sheets are independently punched to enable the main body punching sheets on the plate to be arranged more compactly, the waste material area between the main body punching sheets is reduced, the pole foot punching sheets are arranged in two symmetrical rows on the plate, the pole foot punching sheets in each row are distributed in a staggered manner, the waste material area between the pole foot punching sheets on the plate can be reduced, one pole foot punching sheet can be punched on the plate in the central round hole of the main body punching sheet, the generated waste material is less, the effective utilization rate of the plate is greatly improved, and the use cost of the plate of a single product is reduced; compared with the existing single-piece integral blanking, the tonnage requirement of the stamping equipment required for independently blanking the main body stamped sheet and the pole foot stamped sheet is greatly reduced, the energy consumption, the maintenance cost and the maintenance cost of the equipment are reduced, and the energy conservation and the cost reduction are facilitated; in addition, the blanking area of the independent blanking main body punching sheet and the pole foot punching sheet is small, the manufacturing cost of the stamping die is low, and the enterprise cost management and control are facilitated.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
FIG. 1 is a schematic diagram of a main body lamination and a pole leg lamination;
FIG. 2 is a schematic diagram of arrangement of main body punching sheets on a plate;
FIG. 3 is a schematic view of arrangement of pole leg laminations on a plate;
FIG. 4 is a schematic view of the assembly of the stator core body with the stator core legs;
FIG. 5 is a cross-sectional view of FIG. 4;
fig. 6 is a schematic diagram of arrangement of existing iron core stamped sheets on a plate.
Detailed Description
One embodiment of the manufacturing method of the magneto stator core of the invention is as follows:
the present embodiment takes an 8-pole magneto stator core of a CG125 model motorcycle as an example, and includes the following steps:
1) every iron core towards piece design of magneto stator core is for independent blanking fashioned utmost point foot towards piece 1 respectively to and including yoke portion's main part towards piece 2, main part towards piece 2 periphery distributes and has a plurality of dovetail 3 that are used for fixed utmost point foot towards piece 1, utmost point foot towards piece 1 one end is equipped with and is used for the forked tail structure 4 of being connected with main part towards piece 2, is equipped with eight dovetail 3 on a main part towards piece 2 of this embodiment, as shown in fig. 1.
2) Install the die that punches main part towards piece 2 on the progressive die, the blanking shaping of main part towards piece 2 adopts one to go out two moulds, improves blanking efficiency, and the die of installation on the progressive die divide into two rows, and main part towards piece 2 is two rows of arrangements on panel, and main part towards piece 2 between two rows is the staggered distribution, makes the waste material area between the main part towards piece 2 that distributes on the panel reduce, makes main part towards piece 2 follow the order through progressive blanking and singly punches the shaping on panel, as shown in fig. 2.
3) The punching die for punching the pole leg punching sheet 1 is arranged on the progressive die, the four-out die is adopted for punching and forming the pole leg punching sheet 1, the punching die arranged on the progressive die is divided into two rows, and the punching efficiency is improved. The pole foot is towards piece 1 and is two rows of the range that is the symmetry on panel, every row of pole foot is towards piece 1 and is the staggered distribution, should distribute alternately and be the opposite direction for the polar arc 7 of every adjacent two pole foot towards piece 1 and arrange, make two pole foot towards piece 1 forked tail structure 4 be located the spatial position between two pole foot towards piece 1 polar arc 7, can reduce the interval between the pole foot towards piece 1 of arranging according to the preface to reasonable minimum situation, make the waste material area between the pole foot towards piece 1 that distributes on panel reduce the minimum, make pole foot towards piece 1 punch the shaping alone according to the preface on panel through progressive blanking, as shown in fig. 3.
4) At least two riveting concave-convex points 5 are formed on each main body punching sheet 2 and each pole foot punching sheet 1 in a blanking mode, so that the overlapped punching sheets form fixed connection through the riveting concave-convex points 5 during riveting. In this embodiment, four riveting concave-convex points 5 are uniformly distributed on one main body punching sheet 2, and two riveting concave-convex points 5 are arranged on one pole foot punching sheet 1. A plurality of main body punching sheets 2 are overlapped and riveted and fixed through riveting concave-convex points 5 to form a stator core main body; a plurality of pole leg punching sheets 1 are overlapped and riveted and fixed through riveting concave-convex points 5 to form a stator core pole leg.
5) A plurality of stator core pole feet are respectively corresponding to the dovetail grooves 3 on the stator core main body through the dovetail structures 4, the dovetail structures 4 of the plurality of stator core pole feet are simultaneously pressed into the dovetail grooves 3 corresponding to the stator core main body by a press to form interference fit fixation, a stator core is formed, and eight stator core pole feet are fixedly connected to the stator core main body. After the stator core pole feet are fixedly connected with the stator core main body, the periphery of the stator core main body and four sides of the stator core pole feet are plastically packaged to form the 8-pole magneto stator core of the CG125 model motorcycle, as shown in fig. 4.
The invention is not limited to the above embodiment, and a die for blanking the pole leg punching sheet 1 can be arranged at the position of the central circular hole 6 for blanking the main body punching sheet 2 on the progressive die, and the waste material of the central circular hole 6 is used for blanking the pole leg punching sheet 1, so that the plate in the circular hole 6 is fully utilized, the effective utilization rate of the plate is improved, and the plate use cost of a single product is reduced; the main body punching sheet 2 adopts a first die and a second die, so that the blanking efficiency is improved.
Adopt above-mentioned technical scheme, every iron core towards piece design of magneto stator core is respectively independent blanking fashioned utmost point foot towards piece 1 to and the main part towards piece 2 including yoke portion, then with a plurality of main part towards piece 2 fold mutually and fix a stator core main part of formation through 5 riveting concave-convex points, with a plurality of utmost point foot towards piece 1 fold mutually and fix a stator core utmost point of formation through 5 riveting concave-convex points riveting, reuse press the forked tail structure 4 of eight stator core utmost point feet and form interference fit fixed in the dovetail 3 that a stator core main part corresponds simultaneously impressed, constitute stator core. According to the manufacturing method of the magneto stator core, the main punching sheets 2 are independently blanked, so that the main punching sheets 2 on the plate can be arranged more compactly, and the main punching sheets 2 are not provided with pole feet extending outwards in the radial direction, so that the waste material area between the main punching sheets 2 can be reduced to the minimum in the process of independent blanking forming. The pole foot punching sheets 1 are symmetrically arranged in two rows on the plate, the pole foot punching sheets 1 in each row are distributed in a staggered manner, the area of waste materials among the pole foot punching sheets 1 on the plate can be reduced to the minimum, the plate in the central circular hole 6 of the main body punching sheet 2 can be punched with one pole foot punching sheet 1, the generated waste materials are few, the effective utilization rate of the plate is greatly improved, the use cost of the plate of a single product is reduced, the utilization rate of the plate is increased from 39.4% to 53.2% through calculation, 1480 iron core can be manufactured by one ton of original steel, 1996 iron core can be manufactured by one ton of plate after the method of the embodiment is adopted, the cost of the comprehensively calculated single iron core is reduced by about 0.5 yuan on the original basis, and the reference is made in fig. 2 and 3; compared with the existing single-piece integral blanking, the tonnage requirement of the stamping equipment required for independently blanking the main body stamping sheet 2 and the pole foot stamping sheet 1 is greatly reduced, the energy consumption, the maintenance cost and the maintenance cost of the equipment are reduced, and the energy conservation and the cost reduction are facilitated; in addition, the blanking areas of the main body punching sheet 2 and the pole leg punching sheet 1 which are independently blanked are small, the manufacturing cost of the stamping die is low, in the embodiment, the die cost of the main body punching sheet 2 and the pole leg punching sheet 1 in the round hole 6 of the main body punching sheet is about 3.2 ten thousand, the remaining seven pole leg punching sheets 1 have two sizes, two punching dies are arranged, the cost is about 3.6 ten thousand and about 6.8 ten thousand in total, compared with the existing single-sheet integral blanking punching die cost of 12 ten thousand, the punching die cost of about 5.2 ten thousand is saved, and the enterprise cost management and control are facilitated.
Claims (7)
1. A manufacturing method of a magneto stator core is characterized by comprising the following steps:
1) each iron core punching sheet of a magneto stator iron core is designed into a pole leg punching sheet (1) which is formed by punching independently and a main punching sheet (2) comprising a yoke part, a plurality of dovetail grooves (3) used for fixing the pole leg punching sheet (1) are distributed on the periphery of the main punching sheet (2), and a dovetail structure (4) used for being connected with the main punching sheet (2) is arranged at one end of the pole leg punching sheet (1);
2) installing a punching die for punching the main punching sheets (2) on a progressive die, so that the waste material area between the main punching sheets (2) distributed on the plate is reduced, and independently punching and forming the main punching sheets (2) on the plate in sequence through progressive punching;
3) installing a punching die for punching the pole leg punching sheets (1) on a progressive die, so that the waste material area between the pole leg punching sheets (1) distributed on the plate is reduced, and independently punching and forming the pole leg punching sheets (1) on the plate in sequence through progressive punching;
4) the multiple main body punching sheets (2) are overlapped, riveted and fixed to form a stator core main body, and the multiple pole leg punching sheets (1) are overlapped, riveted and fixed to form a stator core pole leg;
5) a plurality of stator core pole feet respectively correspond to dovetail grooves (3) on a stator core main body through dovetail structures (4), and the dovetail structures (4) of the plurality of stator core pole feet are simultaneously pressed into the dovetail grooves (3) corresponding to the stator core main body by a press to form interference fit fixation, so that the stator core is formed.
2. The method of manufacturing a magneto stator core as claimed in claim 1 wherein: each main body punching sheet (2) and each pole foot punching sheet (1) are all blanked and formed with at least two riveting concave-convex points (5), so that the overlapped punching sheets form fixed connection through the riveting concave-convex points (5) during riveting.
3. The method of manufacturing a magneto stator core as claimed in claim 1 wherein: in the step 2), a die for blanking the pole leg punching sheet (1) is arranged at the position of the central round hole (6) of the main punching sheet (2) on the progressive die, and the pole leg punching sheet (1) is blanked by utilizing the waste material of the central round hole (6).
4. The method of manufacturing a magneto stator core as claimed in claim 1 wherein: the blanking forming of the main body punching sheet (2) adopts a first die and a second die, and the blanking forming of the pole foot punching sheet (1) adopts a first die and a fourth die.
5. The method of manufacturing a magneto stator core as claimed in claim 4 wherein: the main body punching sheets (2) are arranged in two rows on the plate, and the main body punching sheets (2) between the two rows are distributed in a staggered manner.
6. The method of manufacturing a magneto stator core as claimed in claim 4 wherein: the pole foot punching sheets (1) are symmetrically arranged in two rows on the plate, and the pole foot punching sheets (1) in each row are distributed in a staggered manner.
7. The method of manufacturing a magneto stator core as claimed in claim 1 wherein: and 5) plastically packaging the periphery of the stator core main body and four sides of the stator core pole feet after the stator core is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010730527.5A CN111740555B (en) | 2020-07-27 | 2020-07-27 | Manufacturing method of magneto stator core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010730527.5A CN111740555B (en) | 2020-07-27 | 2020-07-27 | Manufacturing method of magneto stator core |
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| CN111740555A true CN111740555A (en) | 2020-10-02 |
| CN111740555B CN111740555B (en) | 2023-03-24 |
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| CN202010730527.5A Active CN111740555B (en) | 2020-07-27 | 2020-07-27 | Manufacturing method of magneto stator core |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114453482A (en) * | 2022-04-12 | 2022-05-10 | 宁波震裕科技股份有限公司 | Manufacturing process of iron core |
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| CN114453482A (en) * | 2022-04-12 | 2022-05-10 | 宁波震裕科技股份有限公司 | Manufacturing process of iron core |
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| Publication number | Publication date |
|---|---|
| CN111740555B (en) | 2023-03-24 |
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