CN115912697A - Iron core with insulating end plate - Google Patents
Iron core with insulating end plate Download PDFInfo
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- CN115912697A CN115912697A CN202310025785.7A CN202310025785A CN115912697A CN 115912697 A CN115912697 A CN 115912697A CN 202310025785 A CN202310025785 A CN 202310025785A CN 115912697 A CN115912697 A CN 115912697A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 238000004080 punching Methods 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 15
- 238000006073 displacement reaction Methods 0.000 abstract description 9
- 230000007547 defect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses an iron core with an insulating end plate, which comprises the insulating end plate and an iron core; the two insulation end plates are fixedly arranged on two end planes of the iron core through self-positioning structures respectively, and the shape of each insulation end plate is matched with the shape of the end face of the iron core; the iron core is a stator iron core or a rotor iron core; a plurality of positioning holes are respectively formed in two end faces of the iron core; all the positioning holes are uniformly arranged on the end surface of the iron core, so that the magnetic circuits on the iron core are symmetrically and uniformly distributed; the self-positioning structure comprises a plurality of positioning bosses, and each positioning boss is integrally arranged on the inner side wall of the insulating end plate and corresponds to a positioning hole; each positioning boss is arranged in one positioning hole of the iron core in an interference fit mode. The invention can well meet the production requirements of high-quality and high-efficiency stators and rotors, and the positioning holes and the positioning bosses of the insulating end plates are reasonably arranged at the electromagnetic design stage of the motor, so that the insulating end plates of various stators and rotors are ensured not to generate displacement in the winding process.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an iron core with an insulating end plate.
Background
The motor is an electromagnetic device for realizing electric energy conversion or transmission according to an electromagnetic induction law. Its main function is to generate driving torque as power source of electric appliance or various machines. The motor consists of a stator and a rotor, wherein the stator is a stationary part of the motor and consists of a stator iron core, a stator winding and a machine base, and the stator mainly plays a role in generating a rotating magnetic field.
In the prior art, the insulation end plate applied to the motor generally has two types of structural forms: one is an insulating end plate with a slot for inserting a stator and a rotor; the other type is an insulating end plate without any positioning function, but the two types of insulating end plates have defects.
The first type of insulating end plate with an insulating slot is inserted into the stator and rotor slots, so that the insulating end plate with an insulating slot is provided with an insulating layer with the thickness of more than or equal to 0.5mm, when the insulating slot end plate is installed, the insulating slot end plate is buckled inside the stator and rotor slots, the limited space of the stator and rotor slots is inevitably used, the actual utilization rate of the stator and rotor slots is greatly reduced, the power density of the motor is reduced, the performance index of the motor is reduced, the temperature rise is high, and a series of secondary defects and hidden dangers are caused.
The other insulated end plate without any positioning function is difficult to bear the tension generated when the enameled wire is wound when the stator and the rotor are automatically wound, so that the displacement is generated. When the insulating end plate shifts, the slots and the notches of the stator and the rotor can be partially shielded, so that the winding quality of part of the stator and the rotor is difficult to ensure, and the phenomenon of re-work of the stator and the rotor during the stitch removal is caused; meanwhile, the hidden danger that a small number of motors cannot be detected in time due to the fact that enameled wires are damaged exists, so that the motors leave factories with missing networks, and unpredictable losses are brought to customers and motor manufacturers.
In addition, if avoid above-mentioned technical defect with insulating end plate on gluing to the iron core through glue, but before adopting glue bonding insulating end plate, because of rotor core or stator core after the manufacturing production, its surface has fluid, need adopt modes such as ultrasonic cleaning to get rid of outside fluid, guarantee the clean degree of rotor core or stator core surface, just then can adopt glue to bond insulating end plate. And the glue is adopted for coating and bonding, the drying time is needed, and the bonding force has the bad hidden troubles of instability and the like (for example, the problem of falling off after long-time operation). Therefore, the positioning cost of the insulating end plate is undoubtedly increased, and the method is time-consuming, labor-consuming and inconvenient.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects that the actual utilization rate of the stator and rotor slots is reduced by the insulating end plate with the inserted stator and rotor slots in the prior art, and the winding quality of the stator and rotor is not affected by the easy displacement of the insulating end plate with any positioning function, so as to provide an iron core with the insulating end plate, which can realize the advantages of the two insulating end plates and remove the disadvantages thereof, thereby providing a solution with more reliable quality and lower cost for motor manufacturers.
In order to achieve the purpose, the invention adopts the technical scheme that:
an iron core with an insulating end plate comprises the insulating end plate and the iron core; the two insulation end plates are fixedly arranged on two end planes of the iron core through self-positioning structures respectively, and the shape of each insulation end plate is matched with the shape of the end face of the iron core; the iron core is a stator iron core or a rotor iron core;
a plurality of positioning holes are respectively formed in two end faces of the iron core; all the positioning holes are uniformly arranged on the end surface of the iron core, so that the magnetic circuits on the iron core are symmetrically and uniformly distributed;
the self-positioning structure comprises a plurality of positioning bosses, and each positioning boss is integrally arranged on the inner side wall of the insulating end plate and corresponds to a positioning hole; each positioning boss is arranged in one positioning hole of the iron core in an interference fit mode.
Optionally, the depth of the positioning hole is 3mm-10mm.
Optionally, the iron core is a rotor iron core; a plurality of groups of positioning holes which are circumferentially arrayed and staggered are respectively formed in two end faces of the iron core; and a plurality of groups of positioning bosses which are circumferentially arrayed and arranged in a staggered manner are arranged on the inner side wall of the insulating end plate.
Optionally, the iron core is a stator iron core; and a plurality of positioning holes are uniformly distributed at the outer circle edges of the two end faces of the iron core at intervals.
Optionally, the positioning hole is a trapezoid hole, a square hole, a round hole or a triangular hole.
Optionally, the stator core comprises a plurality of stator core stamped sheets, and a plurality of salient points are uniformly distributed at intervals on the edge of the outer circle of each stator core stamped sheet; the salient points between two adjacent stator core punching sheets are connected through a connecting sheet, and the connecting sheet is fixed on the salient points in an argon arc welding mode.
Optionally, the insulating end plate includes:
a flat plate portion arranged in a circular flat plate shape; the center of the flat plate part is provided with a first through hole, the outer edge of the flat plate part is circumferentially provided with a plurality of rotor iron core openings corresponding to the rotor wire grooves, or the inner edge of the flat plate part is circumferentially provided with a plurality of stator iron core openings corresponding to the stator wire grooves.
Optionally, the insulating end plate further includes:
and the extension part is integrally arranged at the center of the outer side wall of the insulating end plate, and a second through hole which is concentric with the first through hole and is arranged in an equal diameter mode is formed in the extension part.
Optionally, the method for producing the iron core with the insulating end plate includes the following steps:
s1, in the electromagnetic design stage of the motor, the number of positioning holes is distributed according to the number of rotor wire slots on a rotor core, so that the positioning holes are uniformly distributed on two end planes of the rotor core;
s2, sequentially welding the rotor core stamped sheets to form a rotor core, clamping the rotor core and placing the rotor core on a punch press, and punching two end planes of the rotor core by the punch press according to the arrangement mode of the positioning holes in the step S1;
s3, arranging positioning bosses on the insulating end plates according to the arrangement mode of the rotor core positioning holes in the step S1, so that the positioning bosses correspond to the positioning holes one to one; producing the insulating end plate;
s4, clamping the rotor iron core, and sequentially pressing the two insulating end plates into the rotor iron core through a clamp so as to enable the positioning hole and the positioning boss to be in interference fit;
the fastening force in the interference assembling process of the positioning hole and the positioning boss is set according to the shape structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
Optionally, the method for producing the iron core with the insulating end plate includes the following steps:
s10, in the electromagnetic design stage of the motor, the number of positioning holes is distributed according to the number of stator wire slots on the stator core, so that the positioning holes are uniformly distributed on two end planes of the stator core;
s20, sequentially welding the stator core stamped sheets to form a stator core, clamping the stator core and placing the stator core on a punch press, and punching two end planes of the stator core by the punch press according to the arrangement mode of the positioning holes in the step S10;
s30, arranging positioning bosses on the insulating end plate according to the arrangement mode of the stator core positioning holes in the step S10, and enabling the positioning bosses to correspond to the positioning holes one by one; producing the insulating end plate;
s40, clamping the stator core, and sequentially pressing the two insulating end plates into the stator core through a clamp so as to fit the positioning holes and the positioning bosses in an interference manner;
the fastening force in the interference assembling process of the positioning hole and the positioning boss is set according to the shape structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
The technical scheme of the invention has the following advantages:
1. the iron core with the insulating end plate can well meet the production requirements of high-quality and high-efficiency stators and rotors, and the positioning holes and the insulating end plate positioning bosses are reasonably arranged at the electromagnetic design stage of the motor, so that various different stator and rotor insulating end plates can be ensured not to generate displacement in the winding process, the defect that the actual utilization rate of stator and rotor slots can be reduced by the existing insulating end plate is overcome, and the defect that the winding quality of the stators and the rotors is influenced by the fact that the existing insulating end plate is easy to generate displacement is also avoided. The invention provides the stator and rotor insulation end plate with simple manufacture, good manufacturability and low cost for the related motor industry, thereby providing conditions for motor manufacturers to produce products with higher quality.
2. The iron core with the insulating end plate provided by the invention meets the use requirements of different occasions, and can realize the self-positioning fastening effect through simple adjustment.
3. According to the iron core with the insulating end plate, the positioning boss and the positioning hole are assembled, so that the insulating end plate cannot be too tight or too loose when being positioned on the iron core. If the insulating end plate and the iron core are tightly matched, opening force is easily generated between the insulating end plate and the iron core, and the normal use of the insulating end plate is influenced. If the fit between the insulating end plate and the iron core is too loose, the insulating end plate and the iron core are easy to displace, and the winding quality of coil winding is affected.
4. The iron core with the insulating end plate provided by the invention has the advantages of simple structure and convenience in installation, and the key is that in the electromagnetic design stage of the motor, the uniformity of the magnetic circuit of the motor must be ensured, and the adverse condition that the magnetic circuit generates a similar bottleneck effect is avoided.
5. According to the production method of the iron core with the insulating end plate, the mode that the positioning boss on the insulating end plate and the positioning hole on the iron core are directly inserted and positioned in an interference fit mode is adopted, compared with the mode that the insulating end plate is glued in the prior art, the method is more convenient and faster to install, the manufacturing time is not increased, the production period is short, the production cost is low, and the iron core does not need to be cleaned by ultrasonic waves.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a side view of an insulating end plate of embodiment 1 of the present invention;
fig. 2 is a top view of an insulating end plate of embodiment 1 of the present invention;
fig. 3 is a side view of a rotor core of embodiment 1 of the present invention;
fig. 4 is a plan view of a rotor core according to embodiment 1 of the present invention;
fig. 5 is a plan view of an insulating end plate of embodiment 1 of the present invention positioned and mounted on a rotor core;
fig. 6 is a side view of an insulating end plate of embodiment 1 of the present invention positioned and mounted on a rotor core;
fig. 7 is a plan view of a stator core according to embodiment 2 of the present invention.
Reference numerals:
1. an insulating end plate; 11. a flat plate portion; 12. an extension portion; 13. positioning the boss; 14. rotor core notches; 2. an iron core; 21. positioning holes; 22. salient points; 23. a rotor wire slot; 24. stator slots.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
One embodiment of a core with insulating end plates, as shown in fig. 1-6, comprises insulating end plates 1 and a core 2. The two insulating end plates are respectively and fixedly arranged on the planes of the two ends of the iron core 2, and the shape of each insulating end plate is matched with the shape of the end face of the iron core 2. The core 2 is a rotor core, i.e. an insulating end plate is arranged on the rotor core.
Above-mentioned iron core with insulating end plate, what adopt because of insulating end plate is the fixed form that sets up at 2 terminal surfaces of iron core for insulating end plate can not occupy the space of rotor wire casing, can practice thrift the requirement that the cost can guarantee again motor efficiency promptly. In addition, the insulating end plate in the embodiment is not separately arranged from the iron core 2, so that the insulating end plate does not displace when coils are wound, and the defect that the stator and rotor winding quality is affected due to the fact that the existing insulating end plate is easy to displace is overcome.
The invention meets the use requirements of different occasions, and simultaneously can realize the self-positioning fastening effect through simple adjustment, thereby avoiding the situation that the stator and the rotor are difficult to bear the winding tension of the enameled wire and generate displacement when the stator and the rotor are subjected to automatic winding, and avoiding the problem that the winding quality of part of the stator and the rotor can not be ensured because the slots and the notches of the stator and the rotor are partially shielded when the insulating end plate is displaced, so the invention can play a certain role in ensuring the quality control of the stator and the rotor manufacturing of the motor.
It should be noted that, in the present embodiment, the shape of the insulating end plate is matched with the shape of the end face of the core 2, which means that the insulating end plate is the same as or similar to the shape of the end face of the core 2, and here, similar means that the shape of the insulating end plate is smaller than that of the core.
Further, as shown in fig. 4, a plurality of positioning holes 21 are respectively formed on two end surfaces of the iron core 2 in this embodiment.
Two insulating end plates 1 are respectively positioned and arranged on the end surface of the iron core 2 through a self-positioning structure.
Referring to fig. 1 and 2, the self-positioning structure includes a plurality of positioning bosses 13, and each of the positioning bosses 13 is integrally disposed on an inner sidewall of the insulating end plate and corresponds to a positioning hole 21. More specifically, each of the positioning bosses 13 is disposed in one of the positioning holes 21 of the core 2 by interference fit. This embodiment adopts the mode that location boss 13 and locating hole 21 joined in marriage mutually for insulating end plate 1 can not be too tight when fixing a position to iron core 2 on, also can not too not become flexible. If the insulating end plate 1 is tightly matched with the iron core 2, opening force is easily generated between the insulating end plate 1 and the iron core 2, and normal use of the insulating end plate 1 is affected. If the fit between the insulating end plate 1 and the iron core 2 is too loose, the insulating end plate and the iron core are easy to displace, and the winding quality of coil winding is affected.
The self-positioning structure mainly achieves the self-positioning purpose through mutual interference insertion of the novel insulating end plate positioning boss 13 and the positioning hole 21 of the iron core, and self-positioning fastening force can be achieved according to the shape structure of the boss, the number of boss distribution, the thickness of a coil and the interference size. For example, the thicker the coil, the greater the tightening force required, since the thicker the coil, the greater the force of displacement generated when the coil is wound. The greater the number of bosses distributed, the greater the required fastening force. The greater the number of bosses distributed, the greater the required fastening force.
As a preferred embodiment, the positioning boss 13 of the novel insulating end plate and the positioning hole 21 of the iron core adopt an interference tight-fitting positioning mode, including but not limited to the positioning mode with the same function as that described above, and all belong to the novel structural form of the invention.
Each locating hole 21 is evenly arranged on the end face of the iron core 2, so that the magnetic circuit distribution on the iron core 2 is symmetrical and even, the condition that the magnetic force lines are too dense can not occur, the normal operation of the iron core is ensured, and the bottleneck effect can not be generated in the magnetic field.
As a further improved embodiment, the iron core 2 is a rotor iron core, and a plurality of sets of positioning holes 21 arranged in a circumferential array and staggered manner are respectively formed on two end surfaces of the iron core 2. And a plurality of groups of positioning bosses 13 which are circumferentially arrayed and staggered are arranged on the inner side wall of the insulating end plate. Two sets of locating holes 21 and two sets of location bosss 13 are provided with in this embodiment, and after two sets of location bosss 13 that set up in this embodiment were fixed a position to locating hole 21, because of crisscross setting between two sets of locating holes 21 and two sets of location bosss 13, carry out the multiple spot position restriction to insulating end plate 1 for it is inseparabler to cooperate between insulating end plate 1 and the iron core 2, makes difficult production displacement phenomenon between insulating end plate 1 and the iron core 2.
Four positioning holes 21 are formed in one group, two positioning holes 21 are arranged on the same horizontal plane, and the other two positioning holes 21 are arranged on the same vertical plane. So set up, fix a position four positions on insulating end plate 1. The other group of the positioning holes 21 is provided with four positioning holes 21, the four positioning holes 21 are circumferentially arrayed on the insulating end plate 1, and the four positioning holes of the other group are staggered with the four positioning holes of the other group.
The insulating end plate comprises a flat plate part 11, the flat plate part 11 is arranged in a circular flat plate shape, and a first through hole is formed in the flat plate part 11. A plurality of rotor core openings 14 corresponding to the rotor slots 23 are circumferentially arranged on the outer edge of the flat plate part 11, so that the coil can pass through the rotor slots and the rotor core openings 14.
In addition, the insulating end plate further comprises an extension portion 12, the extension portion 12 is integrally arranged at the center of the outer side wall of the insulating end plate, and a second through hole which is concentric with the first through hole and is arranged in the same diameter mode is formed in the extension portion 12. The rotating shaft can pass through the first through hole and the second through hole, and the extension part 12 provided in the embodiment increases the contact area with the rotating shaft.
The production method of the iron core with the insulating end plate comprises the following steps:
s1, in the electromagnetic design stage of the motor, the number of the positioning holes is distributed according to the number of the rotor wire slots 23 on the rotor core, so that the positioning holes are uniformly distributed on two end planes of the rotor core.
S2, welding the rotor core punching sheets in sequence to form a rotor core, clamping the rotor core and placing the rotor core on a punch press, and punching the two end planes of the rotor core by the punch press according to the arrangement mode of the positioning holes in the step S1.
S3, arranging positioning bosses 13 on the insulating end plate 1 according to the arrangement mode of the rotor core positioning holes in the step S1, and enabling the positioning bosses 13 to correspond to the positioning holes one by one; the insulating end plate 1 is produced.
S4, clamping the rotor iron core, and sequentially pressing the two insulating end plates 1 into the rotor iron core through the clamp, so that the positioning hole 21 and the positioning boss 13 are in interference fit.
The fastening force in the interference assembling process of the positioning hole 21 and the positioning boss 13 is set according to the shape and the structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
When the automatic winding is carried out, the insulating end plate can not generate displacement to cause the condition of scrapping the stator and the rotor or the hidden trouble caused by the damage of the enameled wire, and the technical difficulty of the prior process is satisfactorily solved.
The invention realizes the self-positioning purpose by inserting the positioning boss 13 on the insulating end plate 1 and the positioning hole 21 on the rotor iron core 2 in an interference manner, thereby forming a novel stator and rotor insulating end plate assembly. The novel stator and rotor insulation end plate assembly can be simply realized for a manufacturer of the motor, and can be popularized no matter production and manufacturing, quality guarantee and cost control are achieved.
Example 2
On the basis of embodiment 1, as shown in fig. 7, this embodiment discloses a specific implementation of a core with insulating end plates.
Unlike embodiment 1, the core 2 in this embodiment is a stator core, i.e., an insulating end plate is provided on the stator core. Different from the embodiment 1, a plurality of positioning holes 21 are uniformly distributed at intervals on the outer circle edges of the two end surfaces of the iron core 2 in the embodiment, and because the magnetic lines of force distributed on the outer circle edge of the stator iron core are less, the positioning holes are arranged at the position to enable the magnetic lines of force in the stator iron core to be distributed more uniformly. And the locating hole 21 sets up to trapezoidal hole or quad slit or round hole or triangle-shaped hole, and the locating hole in this embodiment sets up to trapezoidal hole for be difficult for droing after the cooperation between protruding and the locating hole of location.
The stator core comprises a plurality of stator core stamped sheets, and a plurality of salient points 22 are uniformly distributed at the edge of the outer circle of each stator core stamped sheet at intervals. Salient points 22 between two adjacent stator core punching sheets are connected through connecting sheets, and the connecting sheets are fixed on the salient points 22 in an argon arc welding mode.
In addition, a plurality of stator core gaps corresponding to the stator slots 24 are circumferentially formed on the inner edge of the flat plate portion 11 in this embodiment.
In this embodiment, a method for producing an iron core with an insulating end plate includes the following steps:
s10, in the electromagnetic design stage of the motor, the number of the positioning holes is distributed according to the number of the stator slots 24 on the stator core, so that the positioning holes are uniformly distributed on two end planes of the stator core. For example, in fig. 7, the number of the stator slots 24 on the stator core is 9, and the number of the positioning holes is correspondingly set to 3, and if the number of the stator slots 24 on the stator core is 12, the number of the positioning holes is correspondingly set to 4.
S20, sequentially welding the stator core punching sheets to form a stator core, clamping the stator core and placing the stator core on a punch press, and punching two end planes of the stator core by the punch press according to the arrangement mode of the positioning holes in the step S10.
S30, arranging positioning bosses 13 on the insulating end plate 1 according to the arrangement mode of the stator core positioning holes in the step S10, so that the positioning bosses 13 correspond to the positioning holes one by one; the insulating end plate 1 is produced.
S40, clamping the stator core, and sequentially pressing the two insulating end plates 1 into the stator core through a clamp so as to enable the positioning hole 21 and the positioning boss 13 to be in interference fit.
The fastening force in the interference assembling process of the positioning hole 21 and the positioning boss 13 is set according to the shape and the structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. The iron core with the insulating end plate is characterized by comprising an insulating end plate (1) and an iron core (2); the two insulation end plates are fixedly arranged on two end planes of the iron core (2) through self-positioning structures respectively, and the shape of each insulation end plate is matched with the shape of the end face of the iron core (2); the iron core (2) is a stator iron core or a rotor iron core;
a plurality of positioning holes (21) are respectively formed in two end faces of the iron core (2); all the positioning holes (21) are uniformly arranged on the end surface of the iron core (2) so as to ensure that the magnetic circuit distribution on the iron core (2) is symmetrical and uniform;
the self-positioning structure comprises a plurality of positioning bosses (13), and each positioning boss (13) is integrally arranged on the inner side wall of the insulating end plate and corresponds to a positioning hole (21); each positioning boss (13) is arranged in one positioning hole (21) of the iron core (2) in an interference fit mode.
2. A core with insulating end plates according to claim 1, characterized in that the depth of the positioning holes (21) is 3-10 mm.
3. A core with insulating end plates according to claim 1, characterized in that the core (2) is a rotor core; a plurality of groups of positioning holes (21) which are circumferentially arrayed and staggered are respectively formed in two end faces of the iron core (2); and a plurality of groups of positioning bosses (13) which are circumferentially arrayed and staggered are arranged on the inner side wall of the insulating end plate.
4. A core with insulating end plates according to claim 1, characterized in that the core (2) is a stator core; and a plurality of positioning holes (21) are uniformly distributed at intervals on the excircle edges of the two end surfaces of the iron core (2).
5. A core with insulating end plates according to claim 4, characterized in that the positioning holes (21) are arranged as trapezoidal or square or round or triangular holes.
6. The iron core with the insulating end plate as claimed in claim 4, wherein the stator iron core comprises a plurality of stator iron core punching sheets, and a plurality of salient points (22) are uniformly distributed at intervals on the outer circle edge of each stator iron core punching sheet; salient points (22) between two adjacent stator core punching sheets are connected through connecting sheets, and the connecting sheets are fixed on the salient points (22) in an argon arc welding mode.
7. The core with insulating end plates of claim 1, wherein the insulating end plates comprise:
a flat plate part (11) arranged in a circular flat plate shape; a first through hole is formed in the center of the flat plate part (11); the outer edge of the flat plate part (11) is circumferentially provided with a plurality of rotor iron core openings (14) corresponding to the rotor wire grooves (23), or the inner edge of the flat plate part (11) is circumferentially provided with a plurality of stator iron core openings corresponding to the stator wire grooves (24).
8. The core with insulating end plates of claim 7, further comprising:
and the extension part (12) is integrally arranged at the center of the outer side wall of the insulating end plate, and a second through hole which is concentric with the first through hole and is arranged in an equal diameter mode is formed in the extension part (12).
9. The core with insulating end plates according to any one of claims 1 to 8, wherein the method for producing the core with insulating end plates comprises the following steps:
s1, in the electromagnetic design stage of the motor, the number of positioning holes is distributed according to the number of rotor wire slots (23) on a rotor core, so that the positioning holes are uniformly distributed on two end planes of the rotor core;
s2, sequentially welding the rotor core stamped sheets to form a rotor core, clamping the rotor core and placing the rotor core on a punch press, and punching two end planes of the rotor core by the punch press according to the arrangement mode of the positioning holes in the step S1;
s3, arranging positioning bosses (13) on the insulating end plate (1) according to the arrangement mode of the rotor core positioning holes in the step S1, and enabling the positioning bosses (13) to correspond to the positioning holes one by one; producing the insulating end plate (1);
s4, clamping the rotor iron core, and sequentially pressing the two insulating end plates (1) into the rotor iron core through a clamp so as to enable the positioning hole (21) and the positioning boss (13) to be in interference fit;
the fastening force in the interference assembling process of the positioning hole (21) and the positioning boss (13) is set according to the shape structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
10. The core with insulating end plates according to any one of claims 1 to 8, wherein the method for producing the core with insulating end plates comprises the following steps:
s10, in the electromagnetic design stage of the motor, the number of positioning holes is distributed according to the number of stator wire slots on the stator core, so that the positioning holes are uniformly distributed on two end planes of the stator core;
s20, sequentially welding the stator core stamped sheets to form a stator core, clamping the stator core and placing the stator core on a punch press, and punching two end planes of the stator core by the punch press according to the arrangement mode of the positioning holes in the step S10;
s30, arranging positioning bosses (13) on the insulating end plate (1) according to the arrangement mode of the stator core positioning holes in the step S10, and enabling the positioning bosses (13) to correspond to the positioning holes one by one; producing the insulating end plate (1);
s40, clamping the stator iron core, and sequentially pressing the two insulating end plates (1) into the stator iron core through a clamp so as to enable the positioning hole (21) and the positioning boss (13) to be in interference fit;
the fastening force in the interference assembling process of the positioning hole (21) and the positioning boss (13) is set according to the shape structure of the positioning boss, the distribution quantity of the positioning bosses, the thickness of the coil and the assembling degree between the positioning hole and the positioning boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310025785.7A CN115912697A (en) | 2023-01-09 | 2023-01-09 | Iron core with insulating end plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310025785.7A CN115912697A (en) | 2023-01-09 | 2023-01-09 | Iron core with insulating end plate |
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| CN115912697A true CN115912697A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310025785.7A Pending CN115912697A (en) | 2023-01-09 | 2023-01-09 | Iron core with insulating end plate |
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| Country | Link |
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| CN (1) | CN115912697A (en) |
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| CN216356152U (en) * | 2021-10-27 | 2022-04-19 | 顾丽娟 | Motor rotor |
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Application publication date: 20230404 |