Technical field
The present invention relates to machine field, especially a kind of motor stator stator core used, there is the manufacture method of motor and the motor of this kind of stator core.
Background technology
Motor refers to a kind of calutron of realizing electric energy conversion or transmit according to the law of electromagnetic induction, comprises stator and rotor.Wherein stator comprises the winding that iron core and coil form, and its coil is the winding slot place around iron core by the opening on iron core.The manufacture method of traditional stator, for first using the circular punching of mould punching, then laminates formation iron core by circular punching, then uses special interior around machine coiling.The method stock utilization is low, and cost is high, and the comparatively complicated punching efficiency of mould is low, in addition coil winding need special equipment and threading speed low.
For improving stock utilization and threading speed, the core structure that has occurred a kind of chain type, as shown in Figure 1, during punching, the stator lamination that adopts the punching of strip raw material to become is yi word pattern and arranges, after the such stator lamination of multi-disc is stacked, wind the line, finally by the stator core of yi word pattern around thin bridge 2 circumflexions.This scheme can reach minimizing material cost, improve the object of winding efficiency, but by thin bridge 2, connect between the profile of tooth unit 1 of yi word pattern, need through the conglobate operation of bending shaping, in bending process, thin bridge 2 parts easily can produce distortion after fracture and bending outside primary flat, uneven while causing stator lamination stacked for occurring after Reducing distortion interfering, need within the scope of bending, wash out part material, as form arc sections 3, thereby after this part is bent, there is breach and effective contact area diminished and increase leakage field, and after circumflexion, must will finally be connected part is welded, or adopt pressure keeping craft equipment pressurize to make its unlikely scattering, thereby technique is loaded down with trivial details, production efficiency is low.
Summary of the invention
Main purpose of the present invention is to provide a kind of stator core without pressurize or welding of the profile of tooth cell formation by mutually fastening;
Another object of the present invention is to provide a kind of motor of the structure of the stator core without pressurize or welding of the profile of tooth cell formation by mutually fastening;
Another object of the present invention is to provide a kind of manufacture method of motor of the stator core without pressurize or welding structure of the profile of tooth cell formation by mutually fastening.
For realizing above-mentioned main purpose, stator core provided by the invention is included in a plurality of profiles of tooth unit being circumferentially mutually bolted together, described in each, profile of tooth unit has the tooth portion and the yoke portion that is positioned at tooth portion one end for winding the line, one end of yoke portion is provided with circular-arc projection, the other end is provided with the groove identical with the shape of projection, projection and groove are arranged in the outer rim of yoke portion, profile of tooth unit, by the groove fit of projection and adjacent profile of tooth unit, forms relatively turnable planar hinge between two adjacent teeth shape unit.
The projection and the groove that by E Bu two ends, profile of tooth unit, arrange, realize when profile of tooth unit splicing is circular stator core and can fasten, without pressurize or welding; Two adjacent teeth shape forms relatively turnable planar hinge between unit, makes the deployable one-tenth yi word pattern of stator core when keeping profile of tooth unit to connect, and then can be in the tooth portion coiling of profile of tooth unit when deployed condition, and threading speed is high; Projection and groove are arranged on the outer rim of yoke portion, and during several profile of tooth unit circumflexion, yoke portion can leaving certain gaps uncovered by the economic plan, reduces the generation of leakage field.
What more concrete scheme was the part that approaches stator core axis in projection most along stator core is radially less than chord length corresponding to slot opening place apart from the distance of stator core periphery.Projection can side direction be inserted groove from opening, between each profile of tooth unit, can connect more easily.
Another more concrete scheme is that the circular-arc different radii circular arc by two sections of above concentric settings forms, and the radius of the circular arc being wherein connected with described stator core periphery is minimum, and the radius of other circular arcs increases in the order of connection successively.Mosaic face is strengthened, increase effective contact area, reduce leakage field, and increase is buckled into the mechanical strength after full circle, Reducing distortion.
To be yoke portion be provided with location division away from a side of described tooth portion to another more concrete scheme.By location division, realize the fixing of profile of tooth unit, be convenient to coiling and assembled.
For realizing another object of the present invention, motor provided by the invention comprises stator and rotor, the stator core of stator is included in a plurality of profiles of tooth unit being circumferentially mutually bolted together, each profile of tooth unit has the tooth portion for winding the line and is positioned at the yoke portion of tooth portion one end, one end of yoke portion is provided with circular-arc projection, the other end is provided with the groove identical with the shape of projection, projection and groove are arranged in the outer rim of yoke portion, profile of tooth unit, by the groove fit of projection and adjacent profile of tooth unit, forms relatively turnable planar hinge between two adjacent teeth shape unit.
The projection and the groove that by E Bu two ends, profile of tooth unit, arrange, realize when profile of tooth unit splicing is circular stator core and can fasten, and without pressurize or welding, simplifies motor production process.Two adjacent teeth shape forms relatively turnable planar hinge between unit, makes the deployable one-tenth yi word pattern of stator core when keeping profile of tooth unit to connect, and then can be in the tooth portion coiling of profile of tooth unit when deployed condition, and threading speed is high, improves motor production efficiency; Projection and groove are arranged in the outer rim of yoke portion, and during several profile of tooth unit circumflexion, yoke portion can leaving certain gaps uncovered by the economic plan, reduces the generation of motor flux leakage.
For realizing another object of the present invention, motor manufacture method provided by the invention comprises the steps: a) punching profile of tooth unit sheet, with multi-disc tooth shape unit sheet, be laminated into profile of tooth unit, each profile of tooth unit has the tooth portion for winding the line and is positioned at the yoke portion of tooth portion one end, one end of yoke portion is provided with circular-arc projection, the other end is provided with the groove identical with the shape of projection, projection and groove are arranged in the outer rim of yoke portion, profile of tooth unit, by the groove fit of projection and adjacent profile of tooth unit, forms relatively turnable planar hinge between two adjacent teeth shape unit; B) successively a large amount of profiles of tooth unit is connected into long-chain by planar hinge; C), at the tooth portion installing insulating skeleton of each profile of tooth unit, adopt open coil winding machine at tooth portion coiling; D) a plurality of profiles of tooth unit circumflexion stator e in intercepting long-chain) general assembly, makes motor.
After being combined into long-chain by profile of tooth unit, carry out again the coiling of coil, can realize automation and connect operation, enhance productivity.After being assembled into full circle stator, each profile of tooth unit can snap together securely, without welding or the pressurize of employing frock.
Another program of motor manufacture method comprises the steps: a) punching profile of tooth unit sheet, with multi-disc tooth shape unit sheet, be laminated into profile of tooth unit, each profile of tooth unit has the tooth portion for winding the line and is positioned at the yoke portion of described tooth portion one end, one end of yoke portion is provided with circular-arc projection, the other end is provided with the groove identical with the shape of described projection, and projection and groove are arranged in the outer rim of yoke portion; B), at the tooth portion installing insulating skeleton of each profile of tooth unit, adopt open coil winding machine at tooth portion coiling; D) by a plurality of circular stators of profile of tooth unit splicing with coil; E) general assembly, makes motor.
By each independent coiling in profile of tooth unit, can improve winding efficiency.After being assembled into full circle stator, each profile of tooth unit can snap together securely, without welding or the pressurize of employing frock.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing stator core when deployed condition;
Fig. 2 is the plane graph of stator core of the present invention the first embodiment profile of tooth unit;
Fig. 3 is the schematic diagrames of stator core of the present invention the first embodiment two profile of tooth unit while splicing;
Fig. 4 is the schematic diagram that stator core of the present invention the first embodiment two profile of tooth unit are connected to form planar hinge;
Fig. 5 is that catenulate schematic diagram is spelled in stator core of the present invention the first embodiment profile of tooth unit;
Fig. 6 is the plane graph of stator core the first embodiment stator core of the present invention;
Fig. 7 is the schematic diagram that stator core of the present invention the second embodiment profile of tooth unit splices mutually;
Fig. 8 is the enlarged drawing of Fig. 7.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
Stator core the first embodiment
Stator core by a plurality of profiles of tooth unit 1 circumferentially mutually assembled and form, each profile of tooth unit 1 is stacked and form by the profile of tooth unit sheet of some, it has certain thickness, and Fig. 2 is the plane graph of profile of tooth unit 1, and every profile of tooth unit sheet all has the shape shown in Fig. 2.As shown in Figure 2, profile of tooth unit 1 comprises a tooth portion 6 for winding the line, and its one end is provided with for preventing the anti-avulsion gear of coil slippage, and the other end is for forming the yoke portion 7 of stator core periphery, and winding slot separation is in the left and right sides of tooth portion 2.The yoke portion 7 of profile of tooth unit 1 is provided with the location notch 8 as location division away from a side of tooth portion, and the shape of location notch 8 can freely arrange as required, as dovetail shaped, trapezoidal, triangle, circular arc etc., and can as long as can realize the positioning instant of profile of tooth unit 1.Every profile of tooth unit sheet same position rushes that oriented primary flat is outer to be protruded and the identical button point 9 of shape, form between each profile of tooth unit sheet of profile of tooth unit 1 by button put 9 mutual aim at stacked together.The profile of button point 9 also can freely arrange, and as profile is set to cube or segment or prismatoid, as long as can realize between each profile of tooth unit sheet, mutually fastens.
In Fig. 2, the left end of yoke portion 7 is provided with projection 4 along its outer rim and is provided with projection 4 in the part of the periphery of the formation stator core of yoke portion 7, projection 4 comprises bridge part 41 and arc sections 42, the right-hand member of yoke portion 7 is provided with the groove 5 identical with projection 4 shapes along its outer rim, and groove 5 comprises arc sections 52 and the part 51 matching with bridge part 41.The setting of bridge part 41 and the part 51 corresponding with it increases Mosaic face contact area, reduces the generation of leakage field.Wherein the arc sections 42 of projection 4 and the arc sections 52 of groove 5 are set to intersect with stator core periphery and corresponding central angle is greater than 180 degree, are 180 °+β.The part that approaches most stator core axis in projection 4 is radially A apart from the distance of stator core periphery along stator core, and the chord length that groove 5 opening parts are corresponding is B.
When B being set being more than or equal to A, the projection 4 of profile of tooth unit 1 can be in primary flat from the open side of the groove 5 of another profile of tooth unit 1 in the groove 5 inserting, as shown in Figure 3, form relatively turnable planar hinge.Two profile of tooth unit 1 can rotate to an angle relatively, as long as the chord length of the arc sections 42 of projection 4 and arc sections 52 contact-making surfaces of groove 5 is greater than the chord length B that groove 5 opening parts are corresponding, even while applying the power that makes two profile of tooth unit separation in primary flat, two profile of tooth unit 1 still can keep being flexibly connected and not get loose, this connects the scope not getting loose is 2 β, as shown in Figure 4; When the chord length of the arc sections 42 of projection 4 and arc sections 52 contact-making surfaces of groove 5 is less than chord length B corresponding to slot opening place, along the direction perpendicular to groove 5 openings, applies and make the power of two profile of tooth unit 1 separation can make projection 4 from the interior disengagement of groove 5.
When being set to B and being less than A, the projection 4 of profile of tooth unit 1 can not be in primary flat from the open side of the groove 5 of another profile of tooth unit 1 to insertion.Now, projection 4 can only from above or below primary flat along stator core axially from embedding in the groove 5 of another profile of tooth unit 1, form relatively turnable planar hinge.Because B is less than A, in primary flat, along any direction, apply power and all can not make two profile of tooth unit 1 separation that are connected, two profile of tooth unit can mutually rotate and can not get loose in the maximum magnitude not interfering.
Fig. 5 shows the schematic diagram that a plurality of profiles of tooth unit 1 is interconnected to form chain.While being combined into chain type stator core, each profile of tooth unit 1 can be in certain angle as free reversed torsion as chain, the disc type that a large amount of profiles of tooth unit 1 can be coupled together is deposited, conserve space can realize automatic assembly line operation simultaneously, to enhance productivity.
Fig. 6 is the diagram that several profile of tooth unit 1 are assembled into the stator core of full circle, and the stator core that is assembled into full circle can not leave breach in yoke portion, and during design, yoke portion size diametrically can be relatively little, saves lamination material.
When making motor, its production stage is as follows:
A) subpunch is made the profile of tooth unit sheet that forms profile of tooth unit 1, because the structure of profile of tooth unit 1 is relatively simple, can multiple row punching profile of tooth unit sheet to raise the efficiency, then multi-disc tooth shape unit sheet is laminated together to form to profile of tooth unit 1, the opening of the groove 5 by a profile of tooth unit 1 inserts the projection 4 of another profile of tooth unit 1, or above or below the primary flat of this profile of tooth unit 1, the projection 4 of another profile of tooth unit 1 is embedded in the groove 5 of these profile of tooth unit 1, form relatively turnable planar hinge;
B) connect successively next profile of tooth unit 1, until form the long-chain with certain length;
C) at the tooth portion 6 installing insulating skeletons of each profile of tooth unit 1, and the tooth portion 6 in each profile of tooth unit 1 carries out the coiling of coil by open coil winding machine;
D) after coiling completes, a plurality of profiles of tooth unit circumflexion stator in intercepting long-chain;
E) and then pack the general assembly such as rotor into and form motor.
Make motor and also can adopt the coiling at the single enterprising line circle in profile of tooth unit 1 to be then directly assembled into the method for circular stator, or carry out again the coiling of coil after being assembled into the stator core of full circle.
Stator core the second embodiment
Similar in the structure of stator core and the first embodiment in the present embodiment, the arc sections that just forms projection and groove is comprised of two sections of circular arcs.
As shown in Figure 7 and Figure 8, the two ends of the yoke portion 7 of profile of tooth unit 1 are respectively arranged with projection 4 and groove 5 along its outer rim.Wherein the arc sections of projection 4 is formed by two sections of isocentric circular arc 43 and 44, and the arc sections of groove 5 is formed by two sections of isocentric circular arc 53 and 54.Wherein circular arc 43 and 53 corresponding radiuses are less than circular arc 44 and 54 corresponding radiuses.Can improve the mechanical strength that profile of tooth unit 1 pieces together circular stator core, Reducing distortion.While utilizing the present embodiment to produce motor also with the first embodiment in similar.
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