CN111371267B - Method for inserting flat copper wire by utilizing split stator core - Google Patents
Method for inserting flat copper wire by utilizing split stator core Download PDFInfo
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- CN111371267B CN111371267B CN202010305699.8A CN202010305699A CN111371267B CN 111371267 B CN111371267 B CN 111371267B CN 202010305699 A CN202010305699 A CN 202010305699A CN 111371267 B CN111371267 B CN 111371267B
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- split
- stator
- tool
- flat copper
- windings
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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
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
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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
Abstract
The invention discloses a method for embedding flat copper wires by using split stator cores, which comprises the following steps: bending and forming the flat copper wire to form a hairpin type flat copper wire; sequentially inserting the welding ends of the hairpin type flat copper wires into wire inserting holes of the base tool; distributing windings on the base tool, inserting the tool split structure on the distributed windings, and finishing pre-distribution of the windings when a plurality of tool split structures are spliced into a full-circle tool split above the base tool; inserting all the stator split structures into the windings which are distributed in advance in a mode of taking down one tooling split structure and then inserting one stator split structure, and splicing the stator split structures into the full-circle stator split with inserted wires after the stator split structures are completed; the invention enables the winding to be inserted into the stator core after the whole forming process is completed, avoids forming the flat copper wire in the stator core, reduces the possibility of short circuit between the stator core and the winding, can improve the qualification rate of the wire-embedded stator, and reduces the material cost.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a method for embedding flat copper wires by using split stator cores.
Background
At present, the flat copper wire inserted stator generally adopts a form of inserting from the top along the section of an iron core stamped steel, and the inserted flat copper wire is subjected to other processes such as forming of a winding welding end and the like. At present, the method needs a step of continuously forming the iron core and the winding after assembly, so that mutual play between the winding and the iron core in a subsequent forming step may be caused, and once the play exceeds an expected value, a short circuit phenomenon caused by mutual interference between the winding and the iron core is easily caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for embedding an oblate copper wire by using a split stator core aiming at the defects of the prior art, and the method for embedding the oblate copper wire by using the split stator core enables a winding to be inserted into the stator core after all forming processes are finished. The flat copper wire is prevented from being molded in the stator iron core, the possibility of short circuit between the stator iron core and the winding is reduced, the qualification rate of the coil inserting stator can be improved, and the material cost is reduced.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the utility model provides an utilize split type stator core to carry out flat type copper line rule method, wherein split type stator core includes the full circle stator split, the full circle stator split is formed by a plurality of stator split structures concatenation, its characterized in that: the device comprises a pre-arrangement die, wherein the pre-arrangement die comprises a base tool and a split tool;
the surface of the base tool is provided with a plurality of rows of wire inserting grooves which are uniformly distributed along the circumferential direction of the base tool, and each row of wire inserting grooves consists of a plurality of wire inserting holes which are arranged in a row;
the split type tool comprises a full-circle tool split, the full-circle tool split is formed by splicing a plurality of tool split structures, a plurality of teeth are arranged on the inner ring of each tool split structure, notches for mounting flat copper wires are formed between adjacent teeth, and the number of the notches is consistent with that of stator slots of the stator split structure;
the flat copper wire inserting method comprises the following steps:
step 1: bending and forming the flat copper wire to form a hairpin type flat copper wire;
step 2: inserting the welding ends of the plurality of hairpin type flat copper wires into wire inserting holes of the base tool in sequence according to the arrangement scheme of the stator windings;
And 3, step 3: distributing windings on the base tool while inserting the tool split structure into the distributed windings according to the mode of the step 2, and finishing pre-distribution of the windings when a plurality of tool split structures are spliced above the base tool to form a full-circle tool split;
and 4, step 4: taking one of the tooling split structures down from the pre-arranged windings, and then inserting a stator slot of a stator split structure into the pre-arranged windings;
and 5: inserting all the stator split structures into the windings which are distributed in advance in a mode of taking down one tooling split structure and then inserting one stator split structure, and splicing the stator split structures into a full-circle stator split;
step 6: and taking down the base tool.
As a further improved technical scheme of the invention, the base tool comprises a circular base and a circular inner cylinder, the middle part of the circular base is fixedly connected with the bottom of the circular inner cylinder into an integral structure, and the outer diameter of the circular inner cylinder is consistent with the inner diameter of the pre-arranged windings; each row of wiring slots are positioned outside the circular inner cylinder.
As a further improved technical scheme, the split type tool further comprises a plurality of pins, the tool split structure is arc-shaped, the two ends of the tool split structure are respectively provided with a half groove, the half grooves of the adjacent tool split structures can be spliced into a whole groove, and the pins are inserted into the whole groove so as to realize the fixed connection of the adjacent tool split structures.
As a further improved technical solution of the present invention, the step 3 specifically includes:
in the process of arranging the hairpin type flat copper wires to the base tooling, when the number of the wire inserting grooves in which the hairpin type flat copper wires are inserted on the base tooling reaches the number of the notches of a single tooling split structure, the single tooling split structure is inserted into the arranged windings; when a plurality of tool split structures are spliced above the base tool to form a full-circle tool split, a pin is correspondingly inserted into each full groove, so that the positioning of pre-arranged windings is realized.
As a further improved technical scheme, the base tool is made of PPS (polyphenylene sulfide), and the PPS and other materials which cannot damage the copper wire are adopted.
As a further improved technical scheme, the split type tool is made of PPS (polyphenylene sulfide), and the PPS and other materials which do not damage the copper wire are adopted.
As a further improved technical scheme of the invention, the stator split structure comprises an arc-shaped yoke part and a plurality of stator teeth, the plurality of stator teeth are uniformly distributed on the inner ring of the arc-shaped yoke part, stator slots are formed between adjacent stator teeth, and the top and the bottom of the arc-shaped yoke part are provided with rabbets.
As a further improved technical scheme of the invention, two side surfaces of the end part of each stator tooth are provided with mounting grooves, and the mounting grooves are used for mounting slot wedges.
As a further improved technical scheme of the invention, the split stator core further comprises two fixing rings, wherein one fixing ring is sleeved on a spigot at the top of the full-circle stator split, and the other fixing ring is sleeved on a spigot at the bottom of the full-circle stator split.
As a further improved technical solution of the present invention, the step 6 further includes:
pressing one fixing ring on a spigot at the top of the full-circle stator split, taking off the base tool, and pressing the other fixing ring on a spigot at the bottom of the full-circle stator split;
and (4) carrying out voltage withstanding test on the winding on the split stator core by using a voltage withstanding tester.
The beneficial effects of the invention are as follows:
1. the invention enables the winding to be inserted into the stator iron core after the whole forming process is finished. The flat copper wire is prevented from being molded in the stator core, the possibility of short circuit between the stator core and the winding is reduced, the qualification rate of the embedded stator can be improved, and the material cost is reduced.
2. The molded flat copper wires are arranged in a preset die, and all molding procedures can be completed on the flat copper wires at one time by using the method without repeated splitting and bending molding, so that a plurality of manufacturing procedures are reduced.
3. The base tool and the split tool are made of PPS (polyphenylene sulfide), so that the damage to the flat copper wire when the flat copper wire winding is installed is reduced. And the base tool and the split tool fix the position of the winding, so that the relative position of the winding and the iron core is fixed, and the iron core is prevented from damaging the winding when the iron core is installed.
Drawings
Fig. 1 is a schematic structural diagram of a formed hairpin type flat copper wire.
Fig. 2 is a schematic structural view of a base tool of a pre-arrangement mold.
Fig. 3 is a schematic structural diagram of the winding arrangement on the base fixture.
Fig. 4 is a directional diagram of a split tooling inserted onto a winding.
Fig. 5 is a schematic structural view of a tooling split structure.
Fig. 6 is a perspective view of a stator split structure.
Fig. 7 is a plan view of a stator split structure.
Fig. 8 is a schematic structural view of the split stator core with the assembled winding.
Detailed Description
Embodiments of the invention are further illustrated below with reference to figures 1-8:
the embodiment provides a method for embedding flat copper wires by utilizing a split stator core, wherein the split stator core 5 comprises a full-circle stator split, and the full-circle stator split is formed by splicing a plurality of stator split structures 5-1.
The method further comprises a pre-arrangement die, wherein the pre-arrangement die comprises a base tool 2 and a split tool 4; as shown in fig. 2, a plurality of rows of plug wire slots 2-3 uniformly distributed along the circumferential direction of the base tool 2 are arranged on the surface of the base tool 2, and each row of plug wire slots 2-3 consists of a plurality of plug wire holes 2-4 arranged in a row; as shown in fig. 4 and 5, the split type tooling 4 comprises a rounding tooling split, the rounding tooling split is formed by splicing a plurality of tooling split structures 4-1, a plurality of teeth 4-3 are arranged on the inner ring of the tooling split structure 4-1, notches 4-4 for mounting flat copper wires are formed between adjacent teeth 4-3, and the number of the notches 4-4 is consistent with that of the stator slots 5-3 of the stator split structure 5-1.
The flat copper wire inserting method comprises the following steps:
step 1: bending and forming the flat copper wire to form a hairpin flat copper wire 1 as shown in figure 1;
step 2: according to the arrangement scheme of the stator winding, the welding ends 1-1 of the hairpin type flat copper wires 1 are respectively inserted into wire insertion holes 2-4 of a base tool 2, as shown in figure 3;
and step 3: distributing windings on the base tool 2 while inserting the tool split structures 4-1 into the distributed windings according to the mode of the step 2, and finishing pre-distribution of the windings 3 when a plurality of tool split structures 4-1 are spliced above the base tool 2 to form a full-circle tool split; as shown in fig. 4, the arrow in fig. 4 is the insertion direction of the tooling split structure 4-1;
and 4, step 4: taking one of the tooling split structures 4-1 off the pre-arranged windings 3, and inserting the stator slots 5-3 of one of the stator split structures 5-1 into the pre-arranged windings 3;
and 5: inserting all the stator split structures 5-1 into the pre-arranged windings 3 in a manner that a tooling split structure 4-1 is taken down and then a stator split structure 5-1 is inserted, and splicing the stator split structures 5-1 into a full-circle stator split as shown in fig. 8 after the stator split structures are completed;
step 6: and taking down the base tool 2.
Further, the base tool 2 of the embodiment further comprises a circular base 2-1 and a circular inner cylinder 2-2, the middle part of the circular base 2-1 and the bottom of the circular inner cylinder 2-2 are fixedly connected into an integral structure, and the outer diameter of the circular inner cylinder 2-2 is consistent with the inner diameter of the winding 3 which is pre-arranged; each row of the wiring slots 2-3 is positioned outside the circular inner cylinder 2-2.
As shown in fig. 4, further, the split tooling 4 of this embodiment further includes a plurality of pins 4-2, the tooling split structure 4-1 is arc-shaped, the two ends of the tooling split structure 4-1 are both provided with half grooves 4-5, the half grooves 4-5 of the adjacent tooling split structures 4-1 can be spliced into a whole groove, and the pins 4-2 are inserted into the whole groove to realize the fixed connection of the adjacent tooling split structures 4-1.
Wherein the step 3 specifically comprises: in the process of arranging the hairpin type flat copper wires 1 to the base tool 2, when the number of the plug wire slots 2-3 in which the hairpin type flat copper wires 1 are inserted on the base tool 2 reaches the number of the notches of the single tool split structure 4-1, inserting the single tool split structure 4-1 into the arranged windings, and finishing the pre-arrangement of the windings according to the mode; when a plurality of tool split structures 4-1 are spliced above the base tool 2 to form a full-circle tool split, a pin 4-2 is correspondingly inserted into each full groove, so that the pre-arranged windings 3 are positioned. As shown in fig. 4.
The base tool 2 of the embodiment is made of PPS (polyphenylene sulfide). The split type tool 4 is made of PPS (polyphenylene sulfide). PPS material has reduced the damage of split formula frock to the flat type copper line.
As shown in fig. 6, the stator split structure 5-1 of the present embodiment includes an arc-shaped yoke and a plurality of stator teeth 5-4, the plurality of stator teeth 5-4 are uniformly distributed on an inner ring of the arc-shaped yoke, a stator slot 5-3 is formed between adjacent stator teeth 5-4, and both the top and the bottom of the arc-shaped yoke are provided with spigots 5-2. Both side surfaces of the end portion of each stator tooth 5-4 are provided with mounting grooves 5-5 (as shown in fig. 7, a view indicated by an arrow in fig. 7 is a partially enlarged view), and the mounting grooves 5-5 are used for mounting slot wedges for preventing the windings from coming out of the core. The split stator core 5 further comprises two fixing rings 5-6, one fixing ring 5-6 is sleeved on the spigot 5-2 at the top of the full circle stator split, and the other fixing ring 5-6 is sleeved on the spigot 5-2 at the bottom of the full circle stator split.
Wherein the step 6 specifically comprises: pressing one fixing ring 5-6 on a spigot 5-2 at the top of the full circle stator split, taking down the base tool 2, and pressing the other fixing ring 5-6 on the spigot 5-2 at the bottom of the full circle stator split; and (3) carrying out voltage withstanding test on the winding 3 on the split stator core 5 by using a voltage withstanding tester. After the test is completed, the welding end 1-1 of the inserted winding 3 is welded.
In this embodiment, the winding 3 is inserted into the stator core after the completion of the entire molding process. The flat copper wire is prevented from being molded in the stator core, the possibility of short circuit between the stator core and the winding 3 is reduced, the qualification rate of the embedded stator can be improved, and the material cost is reduced. Base frock 2 and split type frock 4 adopt the PPS material, have reduced when the installation flat type copper line winding, to the damage of flat type copper line. And the split type tooling 4 fixes the position of the winding, so that the relative position of the winding and the iron core is fixed, and the iron core is prevented from damaging the winding when the iron core is installed. The flat copper wires formed in the embodiment are arranged in a preset die. By using the method, all forming procedures of the flat copper wire can be completed at one time, repeated splitting and bending forming are not needed, and a plurality of manufacturing procedures are reduced.
The scope of the present invention includes, but is not limited to, the above embodiments, and the present invention is defined by the appended claims, and any alterations, modifications, and improvements that may occur to those skilled in the art are all within the scope of the present invention.
Claims (10)
1. The utility model provides an utilize split type stator core to carry out oblate copper line rule method, wherein split type stator core includes the whole circle stator split, the whole circle stator split is formed by a plurality of stator split structure concatenations, its characterized in that: the device comprises a pre-arrangement die, wherein the pre-arrangement die comprises a base tool and a split tool;
The surface of the base tool is provided with a plurality of rows of wire inserting grooves which are uniformly distributed along the circumferential direction of the base tool, and each row of wire inserting grooves consists of a plurality of wire inserting holes which are arranged in a row;
the split type tool comprises a full-circle tool split, the full-circle tool split is formed by splicing a plurality of tool split structures, a plurality of teeth are arranged on the inner ring of each tool split structure, notches for mounting flat copper wires are formed between adjacent teeth, and the number of the notches is consistent with that of stator slots of each stator split structure;
the flat copper wire inserting method comprises the following steps:
step 1: bending and forming the flat copper wire to form a hairpin type flat copper wire;
and 2, step: inserting the welding ends of the plurality of hairpin type flat copper wires into wire inserting holes of the base tool in sequence according to the arrangement scheme of the stator windings;
and step 3: distributing windings on the base tool while inserting the tool split structure into the distributed windings according to the mode of the step 2, and finishing pre-distribution of the windings when a plurality of tool split structures are spliced above the base tool to form a full-circle tool split;
and 4, step 4: taking one of the tooling split structures down from the pre-arranged windings, and then inserting a stator slot of a stator split structure into the pre-arranged windings;
And 5: inserting all the stator split structures into the windings which are distributed in advance in a mode of taking down one tooling split structure and then inserting one stator split structure, and splicing the stator split structures into a full-circle stator split;
and 6: and taking down the base tool.
2. The method for inserting flat copper wires by using the split stator core as claimed in claim 1, wherein: the base tool comprises a circular base and a circular inner cylinder, the middle part of the circular base and the bottom of the circular inner cylinder are fixedly connected into an integral structure, and the outer diameter of the circular inner cylinder is consistent with the inner diameter of the winding after pre-arrangement; each row of wiring slots are positioned outside the circular inner cylinder.
3. The method for inserting flat copper wires by using the split stator core as claimed in claim 1, wherein: the split type tool further comprises a plurality of pins, the tool split structure is arc-shaped, half grooves are formed in two ends of the tool split structure, the half grooves of the adjacent tool split structures can be spliced into a whole groove, and the pins are inserted into the whole groove to achieve fixed connection of the adjacent tool split structures.
4. The method for inserting flat copper wires by using the split stator core as claimed in claim 3, wherein: the step 3 specifically includes:
In the process of arranging the hairpin type flat copper wires to the base tooling, when the number of the wire inserting grooves in which the hairpin type flat copper wires are inserted on the base tooling reaches the number of the notches of a single tooling split structure, the single tooling split structure is inserted into the arranged windings; when a plurality of tool split structures are spliced above the base tool to form a full-circle tool split, a pin is correspondingly inserted into each full groove, so that the positioning of pre-arranged windings is realized.
5. The method for inserting flat copper wires by using the split stator core as claimed in claim 3, wherein: the base tool is made of PPS materials.
6. The method for inserting flat copper wires by using the split stator core as claimed in claim 3, wherein: the split type tool is made of PPS materials.
7. The method for inserting flat copper wires by using the split stator core as claimed in claim 1, wherein: the stator split structure comprises an arc-shaped yoke portion and a plurality of stator teeth, the stator teeth are evenly distributed on the inner ring of the arc-shaped yoke portion, stator grooves are formed between every two adjacent stator teeth, and the top and the bottom of the arc-shaped yoke portion are provided with seam allowances.
8. The method for inserting flat copper wires by using split stator cores as claimed in claim 7, wherein: and two side surfaces of the end part of each stator tooth are provided with mounting grooves, and the mounting grooves are used for mounting slot wedges.
9. The method for inserting flat copper wires by using split stator cores as claimed in claim 7, wherein: the split stator core further comprises two fixing rings, one fixing ring is sleeved on a spigot at the top of the arc-shaped yoke part of the stator split structure in the full-circle stator split, and the other fixing ring is sleeved on a spigot at the bottom of the arc-shaped yoke part of the stator split structure in the full-circle stator split.
10. The method of claim 9 for the flat copper wire insertion using a split stator core, wherein: the step 6 further comprises:
pressing one fixing ring on a seam allowance at the top of an arc yoke part of a stator split structure in the full-circle stator split, taking down a base tool, and pressing the other fixing ring on a seam allowance at the bottom of the arc yoke part of the stator split structure in the full-circle stator split;
and carrying out voltage withstanding test on the windings on the split stator core by using a voltage withstanding tester.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010305699.8A CN111371267B (en) | 2020-04-17 | 2020-04-17 | Method for inserting flat copper wire by utilizing split stator core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010305699.8A CN111371267B (en) | 2020-04-17 | 2020-04-17 | Method for inserting flat copper wire by utilizing split stator core |
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| CN111371267B true CN111371267B (en) | 2022-06-07 |
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| CN114142693B (en) * | 2021-11-02 | 2022-06-03 | 北京马威电动力技术有限公司 | Stator core wire embedding process, pre-embedding tool and stator |
| CN116111796B (en) * | 2022-12-12 | 2023-09-29 | 跃科智能制造(无锡)有限公司 | Mechanism is held tightly to hairpin motor stator flat copper line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5418686B2 (en) * | 2011-04-05 | 2014-02-19 | トヨタ自動車株式会社 | Stator and stator manufacturing method |
| US8671559B2 (en) * | 2011-04-27 | 2014-03-18 | GM Global Technology Operations LLC | System for joining stator wires |
| WO2015186838A1 (en) * | 2014-06-05 | 2015-12-10 | アイシン・エィ・ダブリュ株式会社 | Stator assembly method and stator assembly device |
| CN204030882U (en) * | 2014-08-22 | 2014-12-17 | 台州市格特电机有限公司 | Split type stator forming frock |
| JP2016135045A (en) * | 2015-01-21 | 2016-07-25 | トヨタ自動車株式会社 | Manufacturing method of stator |
| JP6733823B2 (en) * | 2017-08-09 | 2020-08-05 | アイシン・エィ・ダブリュ株式会社 | Stator assembling method and stator assembling apparatus |
| CN109904963A (en) * | 2019-05-05 | 2019-06-18 | 合肥巨一动力系统有限公司 | A kind of flat wire motor stator |
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