CN109067027B - Stator punching sheet, stator core with same and motor - Google Patents
Stator punching sheet, stator core with same and motor Download PDFInfo
- Publication number
- CN109067027B CN109067027B CN201810771998.3A CN201810771998A CN109067027B CN 109067027 B CN109067027 B CN 109067027B CN 201810771998 A CN201810771998 A CN 201810771998A CN 109067027 B CN109067027 B CN 109067027B
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- stator
- edge
- positioning
- punching sheet
- arc
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- 238000004080 punching Methods 0.000 title claims abstract description 39
- 238000009966 trimming Methods 0.000 claims description 21
- 238000003475 lamination Methods 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator punching sheet, a stator core with the same and a motor, and relates to the field of motors. The blanking process of the U-shaped open slot stator core is poor in arrangement, the silicon steel material utilization rate is low, and the material is wasted. The stator punching sheet comprises a stator punching sheet body, wherein a stator mounting hole, a stator inner hole and a plurality of stator grooves are formed in the stator punching sheet body, 4 positioning grooves are formed in four corners of the outline of the stator punching sheet body, and the positioning grooves are L-shaped open grooves. By arranging the L-shaped open slots at four corners of the outline, one-step forming of excircle positioning and inner hole blanking can be realized, the precision of parts is improved, noise is reduced, the installation is convenient, the four corners are not easy to collide and deform during transportation, the outline size can be smaller than that of the traditional U-shaped open slots, the process arrangement effect is better, the outline of the stator punching body is complementary, and materials are effectively saved.
Description
Technical Field
The invention relates to the field of motors, in particular to a stator punching sheet, a stator iron core with the same and a motor.
Background
In the structural design of the motor, the electric gap between the winding and the end cover is considered, so that the size of the stator punching sheet is increased intangibly, a large amount of process waste can be generated in punching and cannot be utilized, the waste of raw materials is caused, and the cost is increased.
The traditional outer circle positioning structure type stator core generally comprises a closed stator core and a U-shaped open slot stator core, wherein the positioning circular arc of the closed stator core is exposed at the outer end, the positioning circular arc of the core is easy to collide and deform in the transportation or carrying process, so that the motor installation noise is caused, the closed stator core is matched with the upper end cover and the lower end cover of the motor, the circumferential positioning function of a bolt hole is avoided, and the installation is inconvenient; although the U-shaped open slot stator core is positioned and embedded at the inner end, the blanking process is poor in arrangement, the silicon steel material utilization rate is low, and the material waste is caused.
In view of this, there is a need to develop a stator lamination and a stator core to solve the above problems.
Disclosure of Invention
The technical problems to be solved and the technical task to be solved by the invention are to perfect and improve the prior art scheme, and the stator punching sheet, the stator iron core with the same and the motor are provided, so that the purposes of improving the precision and reducing the noise and improving the process arrangement effect are achieved. For this purpose, the present invention adopts the following technical scheme.
The stator punching sheet comprises a stator punching sheet body, wherein a stator mounting hole, a stator inner hole and a plurality of stator grooves are formed in the stator punching sheet body, 4 positioning grooves are formed in four corners of the outline of the stator punching sheet body, and the positioning grooves are L-shaped open grooves. By arranging the L-shaped open slots at four corners of the outline, one-step forming of excircle positioning and inner hole blanking can be realized, the precision of parts is improved, noise is reduced, the installation is convenient, the four corners are not easy to collide and deform during transportation, compared with the traditional U-shaped open slots, the outline size can be smaller, the process arrangement effect is better, the utilization rate of materials is improved, the L-shaped open slots are beneficial to, the outline of the stator punching body is complementary, the materials are effectively saved, and the concave L-shaped open slots are matched with the convex outline of the stator punching body below after the two stator punching bodies above are spliced.
As a further improvement and supplement to the above-mentioned technical solutions, the present invention also includes the following additional technical features.
The L-shaped open slot comprises a positioning arc and a positioning edge, wherein the positioning arc is an arc and is concentric with the inner hole of the stator, and at least one straight line in the positioning edge is parallel to the diagonal center line of the stator mounting hole on the edge, so that the positioning can be conveniently realized. Through the positioning arc and the linear positioning edge of the arc, the circumferential positioning of the upper end cover and the lower end cover of the motor can be realized, and the assembly efficiency is improved.
The 4L-shaped open grooves are symmetrical left and right and up and down; at least 1 of the four contour edges of the contour is provided with 2 symmetrical trimming structures, and the 2 trimming structures are respectively positioned at two sides of the contour edge and are connected with L-shaped open grooves at two sides. Through symmetrical arrangement and the edge cutting structure added with the symmetry, the stator punching sheet can be arranged in a cross manner in the stamping die, the process arrangement is better realized, and the material utilization rate is higher.
The trimming structure comprises a straight line edge and a bevel edge connecting the straight line edge and the contour edge, wherein the vertical distance between the straight line edge and the center of the stator inner hole is smaller than that between the contour edge and the center of the stator inner hole, and the distance is larger than 1mm. The trimming structure is reasonable, the process arrangement is convenient, the reasonable distance size can effectively improve the material utilization rate through the optimization of the arrangement positions on the premise of ensuring the electric gap, and the material utilization effect of the process arrangement is low due to too small distance.
The trimming structures are arranged on two opposite contour edges in 2 groups, and each straight line edge of the trimming structures is connected with the positioning arc. The vertical distance between the trimming edge and the center of the inner hole of the stator can be effectively reduced, and the material consumption is reduced.
The inclination of the bevel edge is 45 degrees; and an equal arc transition angle is arranged between the bevel edge and the straight line edge and between the bevel edge and the contour edge. 45-degree hypotenuse and equal arc transition angle, the optimization arrangement of punching sheets is conveniently carried out through the trimming structure, the process arrangement effect is better, and the material utilization rate is higher.
The width d of the positioning arc is in the size range of 0-20 mm. The reasonable width size can effectively realize positioning.
A stator core comprises a plurality of stator punching sheets which are overlapped along the axial direction of an inner hole of a stator, wherein the stator punching sheets are the stator punching sheets. The transportation safety is high, the stator core is not easy to collide with and deform, the overall dimension of the stator core is reduced appropriately, the material usage amount is small, the safety of batch transportation is improved, and the quality is more stable.
A motor comprises a shell, a rotor and a stator core, wherein the stator core is the stator core. The motor can reduce the total weight, and the quality of the adopted stator core is more stable and reliable, so that the noise value of the batch motor installation is reduced, and the motor quality is effectively improved.
The beneficial effects are that: the one-step forming of the outer circle positioning and the inner hole blanking can be realized through the L-shaped open slot structure, the precision of parts is improved, and the noise of a motor is reduced; the circumferential positioning of the upper end cover and the lower end cover of the motor can be realized through the positioning arc and the linear positioning edge of the arc, so that the assembly efficiency is improved; through the side cut structure of stator punching outline, not only reduced the outline size to can realize the cross arrangement of stator punching in the die, promote technology and arrange the effect, improve material utilization, reduce motor cost.
Drawings
Fig. 1 is a schematic diagram of a closed stator core lamination in the background art.
Fig. 2 is a schematic diagram of a "U" shaped open slot stator core lamination in the background art.
Fig. 3 is a schematic view of a stator lamination of the present invention.
Fig. 4 is an enlarged schematic view of the portion a of fig. 3 in accordance with the present invention.
Fig. 5 is a schematic diagram of a stator punching blanking process arrangement according to the present invention.
Fig. 6 is a schematic view of the stator core structure of the present invention.
In fig. 3-6: 1-stator slots; 2- "L" open slot; 3-stator mounting holes; 4-profile; 5-trimming structure; 6-a stator inner hole; 201-positioning an arc; 202-positioning edges; 501-straight line edge; 502-hypotenuse.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings.
As shown in fig. 3-6, the stator punching sheet comprises an outline 4,4 stator mounting holes 3, stator inner holes 6 and 12 circumferentially arranged stator slots 1, wherein 4 positioning slots are formed in four corners of the outline 4, and the positioning slots are L-shaped open slots 2.
In order to improve the assembly efficiency, the 'L' -shaped open slot 2 comprises a positioning arc 201 and a positioning edge 202, wherein the positioning arc 201 is an arc and concentric with the stator inner hole 6, the positioning edge 202 is a straight line, and the positioning edge 202 is parallel to the diagonal center line of the stator mounting hole 3 on the side. Positioning can be conveniently realized. Through the positioning arc 201 and the linear positioning edge 202 of the circular arc, the positioning between the upper end cover and the lower end cover of the motor and the stator core can be realized, the installation connection of the fastening bolts is convenient, and the assembly efficiency is improved.
In order to better realize the process arrangement, 4L-shaped open grooves 2 are symmetrical left and right and up and down; the 2 opposite contour sides of the contour 4 are respectively provided with 2 symmetrical trimming structures 5, and the 2 trimming structures 5 are respectively positioned at two sides of the contour side and are connected with the positioning arcs 201 of the L-shaped open slots 2 at the two sides. Through symmetrical arrangement and the edge trimming structure 5 of increasing symmetry and the connection of the edge trimming and the positioning arc 201, the vertical distance between the edge trimming and the center of the stator inner hole 6 can be effectively reduced, the cross arrangement of stator punching sheets in a stamping die can be realized, the process arrangement is better realized, the utilization rate of silicon steel materials is improved, and the material cost is reduced.
In order to effectively improve the material utilization rate, the trimming structure 5 comprises a straight line edge 501 and a bevel edge 502 connecting the straight line edge 501 and the outline edge, wherein the vertical distance between the straight line edge 501 and the center of the stator inner hole 6 is smaller than the vertical distance between the outline edge and the center of the stator inner hole 6, and the distance is 4mm. This side cut structure 5 is reasonable, and the technology of being convenient for arranges, and reasonable distance size can be effectual under the prerequisite of guaranteeing the electric gap, and the optimization through the position of arranging promotes the material utilization ratio, and the interval is too little can cause the material utilization effect of technology arrangement low.
In order to achieve better process arrangement, the slope of the bevel 502 is 45 degrees; the oblique side 502, the straight side 501 and the contour side are provided with equal arc transition angles. 45-degree bevel edge 502 and equal arc transition angles are convenient for optimally arranging punching sheets through the trimming structure 5, and the process arrangement effect is better and the material utilization rate is higher.
In order to conveniently realize the positioning of the upper and lower end covers of the motor, the positioning arc 201 has a width d of 9mm. The reasonable width size can effectively realize positioning.
The stator core has a structural scheme that 10 stator punching sheets with the width d=12 of a positioning arc 201 respectively form an upper part and a lower part of the stator core; the middle part of the stator core is formed by 20 stator punching sheets with the width d=0 of the positioning arc 201, and the stator core is formed by laminating the stator punching sheets in the axial direction.
The stator core of the motor is of the above structural scheme. The motor can reduce the total weight of the motor, reduce the motor noise and effectively improve the motor quality.
The stator punching sheet, the stator core with the same and the motor with the same shown in the above figures 3-6 are specific embodiments of the invention, have already shown the essential characteristics and improvements of the invention, and can be equivalently modified in terms of shape, structure and the like according to practical use requirements under the teaching of the invention, which are all within the scope of protection of the scheme.
Claims (8)
1. A stator punching sheet, characterized in that: the stator punching sheet comprises a stator punching sheet body, wherein a stator mounting hole (3), a stator inner hole (6) and a plurality of stator grooves (1) are formed in the stator punching sheet body, 4 positioning grooves are formed in four corners of an outline (4) of the stator punching sheet body, and the positioning grooves are L-shaped open grooves (2);
The L-shaped open slot (2) comprises a positioning arc (201) and a raised positioning edge (202), the positioning arc (201) is an arc, the positioning arc (201) is concentric with the stator inner hole (6), and at least one straight line in the positioning edge (202) is parallel to the diagonal center line of the stator mounting hole (3) on the edge; through the positioning arc and the linear positioning edge of the arc, the circumferential positioning of the upper end cover and the lower end cover of the motor is realized, so that the assembly efficiency is improved.
2. A stator lamination as defined in claim 1 wherein: the 4L-shaped open grooves (2) are symmetrical left and right and up and down; at least 1 of the four contour edges of the contour (4) is provided with 2 symmetrical trimming structures (5), and the 2 trimming structures (5) are respectively positioned at two sides of the contour edge and are connected with L-shaped open grooves (2) at two sides.
3. A stator lamination as defined in claim 2 wherein: the trimming structure (5) comprises a straight line edge (501) and a bevel edge (502) for connecting the straight line edge (501) with the center of the contour edge, wherein the vertical distance between the straight line edge (501) and the center of the stator inner hole (6) is smaller than the vertical distance between the contour edge and the center of the stator inner hole (6), and the distance is larger than 1mm.
4. A stator lamination as defined in claim 3 wherein: the trimming structures (5) are arranged on two opposite contour edges in 2 groups, and each straight line edge (501) of the trimming structures (5) is connected with the positioning arc (201).
5. A stator lamination as defined in claim 3 wherein: the inclination of the bevel edge (502) is 45 degrees; and equal arc transition angles are arranged between the bevel edge (502) and the straight line edge (501) and between the bevel edge and the contour edge.
6. A stator lamination as defined in claim 1 wherein: the size range of the width d of the positioning arc (201) is more than or equal to 0 and less than or equal to 20mm.
7. A stator core, characterized in that: comprising a plurality of stator laminations stacked in the axial direction of the stator bore (6), said stator laminations being as defined in any one of claims 1 to 6.
8. The utility model provides a motor, includes casing, rotor and stator core, its characterized in that: the stator core is the stator core adopting the structure of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771998.3A CN109067027B (en) | 2018-07-13 | 2018-07-13 | Stator punching sheet, stator core with same and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810771998.3A CN109067027B (en) | 2018-07-13 | 2018-07-13 | Stator punching sheet, stator core with same and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109067027A CN109067027A (en) | 2018-12-21 |
| CN109067027B true CN109067027B (en) | 2024-04-19 |
Family
ID=64816560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810771998.3A Active CN109067027B (en) | 2018-07-13 | 2018-07-13 | Stator punching sheet, stator core with same and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109067027B (en) |
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| EP3211772B1 (en) * | 2014-12-26 | 2019-11-06 | Aisin Aw Co., Ltd. | Stator production method and coil |
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| Publication number | Publication date |
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| CN109067027A (en) | 2018-12-21 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| CB02 | Change of applicant information |
Country or region after: China Address after: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Applicant after: WOLONG ELECTRIC GROUP Co.,Ltd. Applicant after: WOLONG ELECTRIC (JINAN) MOTOR Co.,Ltd. Address before: 312300 Economic Development Zone, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: WOLONG ELECTRIC GROUP Co.,Ltd. Country or region before: China Applicant before: WOLONG ELECTRIC (JINAN) MOTOR Co.,Ltd. |
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