CN113315271A - Primary structure of linear motor and manufacturing process thereof - Google Patents
Primary structure of linear motor and manufacturing process thereof Download PDFInfo
- Publication number
- CN113315271A CN113315271A CN202110725676.7A CN202110725676A CN113315271A CN 113315271 A CN113315271 A CN 113315271A CN 202110725676 A CN202110725676 A CN 202110725676A CN 113315271 A CN113315271 A CN 113315271A
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- Prior art keywords
- iron core
- winding
- tooth
- yoke
- linear motor
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000004804 winding Methods 0.000 claims abstract description 41
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 23
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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- 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
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Manufacture Of Motors, Generators (AREA)
- Linear Motors (AREA)
Abstract
The invention belongs to the field of linear motors, and particularly relates to a primary structure of a linear motor and a manufacturing process thereof, aiming at solving the problems of low slot fullness rate, large accumulated error and the like of the primary structure of the conventional linear motor and providing the primary structure of the linear motor with high dimensional accuracy, high slot fullness rate and good magnetic performance, wherein the primary structure of the linear motor comprises an iron core and a winding, the iron core is of a split structure and comprises a tooth part and a yoke part, the tooth part comprises a plurality of iron core teeth, the iron core teeth are respectively in mortise and tenon joint with the yoke part, and iron core slots are formed among the iron core teeth; the winding is wound on the iron core teeth and is accommodated in the iron core groove. During manufacturing, the tooth part and the yoke part are respectively machined firstly, then the prepared winding is arranged on the tooth part, the yoke part is arranged on the tooth part to enable the mortise and the tenon to be matched with each other, and the yoke part is fixed through a curing means.
Description
Technical Field
The invention belongs to the field of linear motors, and particularly relates to a primary structure of a linear motor and a manufacturing process thereof.
Background
The permanent magnet linear motor has the characteristics of simple structure, quick dynamic response and no back clearance, and is widely applied to the industries of aerospace, transportation, machine tool manufacturing and the like. The primary stage of the traditional permanent magnet linear motor is usually an integrated iron core or a spliced iron core structure, and the slot fullness rate of the motor is usually low due to the limitation of the winding process capability of the integrated iron core structure; the block iron core structure can achieve higher slot filling rate, but the accumulated error of the whole size after assembly is large, and the whole rigidity of the motor is small. In addition, the existing primary iron core is limited by the structure and can only be made of non-oriented silicon steel, and higher magnetic performance cannot be obtained.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a primary structure of a linear motor with high dimensional precision, high slot filling rate and good magnetic performance and a manufacturing process thereof.
In order to solve the technical problems, the invention is realized by the following technical scheme: on one hand, the primary structure of the linear motor comprises an iron core and a winding, wherein the iron core is of a split structure and comprises a tooth part and a yoke part, the tooth part comprises a plurality of iron core teeth, the iron core teeth are respectively in mortise and tenon connection with the yoke part, and iron core grooves are formed among the iron core teeth; the winding is wound on the iron core teeth and is accommodated in the iron core groove.
Above-mentioned linear electric motor's primary structure, evenly be provided with a plurality of tongue-and-grooves on the yoke portion, the root of iron core tooth is provided with the tenon respectively, and iron core tooth links together through the cooperation of tongue-and-groove and tenon with yoke portion.
In the primary structure of the linear motor, the core teeth are sequentially connected at the tooth top to form an integral structure, and the core slot is a closed slot.
In the primary structure of the linear motor, the iron core teeth are mutually independent, and the iron core groove is an open groove or a semi-closed groove.
In the primary structure of the linear motor, the winding may be a distributed winding or a concentrated winding.
In the primary structure of the linear motor, the tooth part and the yoke part can be made of non-oriented silicon steel sheets or oriented silicon steel sheets; when the oriented silicon steel sheet is adopted, the rolling direction of the oriented silicon steel sheet of the tooth part is parallel to the trend of the magnetic force lines of the iron core teeth, and the rolling direction of the oriented silicon steel sheet of the yoke part is parallel to the trend of the magnetic force lines of the yoke part.
In another aspect, a process for fabricating a primary structure of a linear motor includes:
A. preparing a tooth part and a yoke part, uniformly processing iron core teeth on the tooth part, connecting tooth tops into a whole, and processing a tenon at the tooth root of each iron core tooth; simultaneously, uniformly processing mortises on the yoke part;
B. preparing a winding and mounting the winding on the tooth part;
C. mounting the yoke part on the tooth part to enable the mortises and the tenons to be matched with each other;
D. fixing the tooth part and the yoke part together by using heat-conducting insulating curing glue;
E. and carrying out circuit connection on the interior of the structure.
The above manufacturing process of the primary structure of the linear motor further includes, after the step E:
F. encapsulating the whole structure by using heat-conducting insulating curing glue;
G. and processing the connecting part at the top of the iron core tooth according to the design requirement to form a closed slot, or an open slot or a semi-closed slot structure which meets the depth requirement.
In the above manufacturing process of the primary structure of the linear motor, when the winding in the step B is a centralized winding, the winding is prepared and installed through an insulating support, and the specific method includes:
B1. manufacturing an insulating support, wherein the insulating support is hollow and can be nested and matched with the iron core teeth;
B2. winding the insulating support in the mould to finish the preparation of the winding;
B3. and mounting the insulation supports with the windings on the iron core teeth one by one.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts a structure form of tooth-yoke separation, the winding manufacture is not limited by the slot structure and the size, the slot fullness rate is greatly improved, the accumulated error does not exist, and the integral size precision is ensured; meanwhile, the manufacturing process is simple and smooth, and automatic production is easy to realize. In addition, the tooth part and the yoke part can adopt non-oriented silicon steel sheets, and also can respectively adopt oriented silicon steel sheets with the rolling direction consistent with the trend of the magnetic induction line of the tooth part and the yoke part, so that the magnetic performance of the primary iron core can be greatly improved, the integral saturation working point of the motor is improved, the magnetic flux density of the tooth part and the magnetic flux density of air gaps are favorably improved, and the thrust density of the motor in unit volume is further improved; meanwhile, the magnetic permeability of the oriented silicon steel sheet perpendicular to the rolling direction is low, which is beneficial to inhibiting the tooth top magnetic flux leakage of the motor and further reducing the thrust fluctuation of the motor.
Drawings
FIG. 1 is a schematic view of a closed cell structure according to the present invention.
Fig. 2 is a schematic view of the tooth structure of the present invention.
Fig. 3 is a schematic view of a yoke structure of the present invention.
Fig. 4 is a schematic view of the structure of the open slot formed after the processing of the present invention.
FIG. 5 is a schematic view of a semi-closed groove formed after processing according to the present invention.
FIG. 6 is a flow chart of the manufacturing process of the present invention.
Fig. 7 is a flow chart of a winding manufacturing and installation method of the present invention.
Fig. 8 is a schematic view of the structure of the insulating support of the present invention.
FIG. 9 is a schematic view of the winding structure of the insulating support in the clamping fixture.
Fig. 10 is a schematic view of the mounting structure of the insulating support of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, a primary structure of a linear motor according to the present invention includes a core 1 and a winding 2. The iron core 1 is of a split structure and is formed by mortise and tenon joints of a tooth part 11 and a yoke part 12. The tooth portion 11 includes core teeth 111 uniformly distributed, the core teeth 111 are connected into a whole at the top end through a connecting portion 114, a core slot 112 is formed between the core teeth 111, and the winding 2 is wound around the core teeth 111 and is accommodated in the core slot 112. The root of each core tooth 111 is also provided with a dovetail rabbet 113. Dovetail-shaped mortises 121 are uniformly formed in the yoke 12, dovetail-shaped tenons 113 are matched with the dovetail-shaped mortises 121, and the iron core teeth 111 can be installed on the yoke 12 one by one, so that the tooth parts 11 and the yoke 12 are connected to form a closed slot structure.
As shown in fig. 4 and 5, the connecting portion 114 of the tooth portion 11 is processed to form a semi-closed groove structure (fig. 5) or an open groove structure (fig. 4).
The tooth portion 11 and the yoke portion 12 of the present embodiment are made of oriented silicon steel sheets, respectively, and can obtain higher magnetic performance, as shown in fig. 2 and fig. 3, a rolling direction S of the oriented silicon steel sheets of the tooth portion 11 is parallel to the iron core teeth 111, that is, parallel to a magnetic line of force of the iron core teeth 111, and a rolling direction N of the oriented silicon steel sheets of the yoke portion 12 is parallel to a magnetic line of force of the yoke portion. In addition, the tooth 11 and the yoke 12 of the present invention may be made of a non-oriented silicon steel sheet.
Fig. 6 shows a manufacturing process flow of the present invention, which specifically includes:
Fig. 7 shows a specific operation method of step 200 when the centralized winding is adopted in the present invention, which includes:
Although the present invention has been described in detail hereinabove, the present invention is not limited thereto, and those skilled in the art can make various modifications in accordance with the principle of the present invention. Thus, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.
Claims (10)
1. The primary structure of the linear motor comprises an iron core and a winding, and is characterized in that the iron core is of a split structure and comprises a tooth part and a yoke part, the tooth part comprises a plurality of iron core teeth, the iron core teeth are respectively in mortise and tenon connection with the yoke part, and iron core grooves are formed among the iron core teeth; the winding is wound on the iron core teeth and is accommodated in the iron core groove.
2. The primary structure of a linear motor according to claim 1, wherein a plurality of mortises are uniformly formed in the yoke portion, tenons are respectively formed at roots of the core teeth, and the core teeth and the yoke portion are connected together through the mortises and the tenons in a matching manner.
3. The primary structure of a linear motor according to claim 2, wherein the core teeth are sequentially connected at the top of the tooth to form a unitary structure, and the core slots are closed slots.
4. The primary structure of a linear motor according to claim 2, wherein the core teeth are independent of each other, and the core slots are open slots or semi-closed slots.
5. A primary structure of a linear motor according to any one of claims 1 to 4, wherein the winding is a distributed winding or a concentrated winding.
6. The primary structure of a linear motor according to any one of claims 1 to 4, wherein the teeth and the yoke are made of non-oriented silicon steel sheets or oriented silicon steel sheets; when the oriented silicon steel sheet is adopted, the rolling direction of the oriented silicon steel sheet of the tooth part is parallel to the trend of the magnetic force lines of the iron core teeth, and the rolling direction of the oriented silicon steel sheet of the yoke part is parallel to the trend of the magnetic force lines of the yoke part.
7. The primary structure of a linear motor according to claim 5, wherein the teeth and the yoke are made of non-oriented silicon steel sheets or oriented silicon steel sheets; when the oriented silicon steel sheet is adopted, the rolling direction of the oriented silicon steel sheet of the tooth part is parallel to the trend of the magnetic force lines of the iron core teeth, and the rolling direction of the oriented silicon steel sheet of the yoke part is parallel to the trend of the magnetic force lines of the yoke part.
8. A manufacturing process of a primary structure of a linear motor is characterized by comprising the following steps:
A. preparing a tooth part and a yoke part, uniformly processing iron core teeth on the tooth part, connecting tooth tops into a whole, and processing a tenon at the tooth root of each iron core tooth; simultaneously, uniformly processing mortises on the yoke part;
B. preparing a winding and mounting the winding on the tooth part;
C. mounting the yoke part on the tooth part to enable the mortises and the tenons to be matched with each other;
D. fixing the tooth part and the yoke part together by using heat-conducting insulating curing glue;
E. and carrying out circuit connection on the interior of the structure.
9. The process of claim 8, wherein step E is followed by:
F. encapsulating the whole structure by using heat-conducting insulating curing glue;
G. and processing the connecting part at the top of the iron core tooth according to the design requirement to form a closed slot, or an open slot or a semi-closed slot structure which meets the depth requirement.
10. The process according to claim 8 or 9, wherein the winding in step B is a concentrated winding, and the winding is prepared and mounted through an insulating support, and the method comprises:
B1. manufacturing an insulating support, wherein the insulating support is hollow and can be nested and matched with the iron core teeth;
B2. winding the insulating support in the mould to finish the preparation of the winding;
B3. and mounting the insulation supports with the windings on the iron core teeth one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725676.7A CN113315271A (en) | 2021-06-29 | 2021-06-29 | Primary structure of linear motor and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110725676.7A CN113315271A (en) | 2021-06-29 | 2021-06-29 | Primary structure of linear motor and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113315271A true CN113315271A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110725676.7A Pending CN113315271A (en) | 2021-06-29 | 2021-06-29 | Primary structure of linear motor and manufacturing process thereof |
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| Country | Link |
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| CN (1) | CN113315271A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567140A (en) * | 2022-04-26 | 2022-05-31 | 星宇电子(宁波)有限公司 | Linear motor and production process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130765A (en) * | 1991-11-01 | 1993-05-25 | Hitachi Kiden Kogyo Ltd | Linear motor for curve |
| JP2005151735A (en) * | 2003-11-18 | 2005-06-09 | Yaskawa Electric Corp | Steel plate for armature core, armature core and manufacturing method for linear motor armature |
| CN105680581A (en) * | 2016-03-04 | 2016-06-15 | 上海电气集团股份有限公司 | High-power density permanent magnet servo motor and stator structure therefor |
| CN107994753A (en) * | 2017-12-21 | 2018-05-04 | 沈阳工业大学 | There is grain-oriented Si steel sheet proximal pole groove permanent-magnetism linear motor design method |
| CN211579712U (en) * | 2020-01-22 | 2020-09-25 | 北京精雕科技集团有限公司 | Primary iron core structure of linear motor |
| CN215009786U (en) * | 2021-06-29 | 2021-12-03 | 北京精雕科技集团有限公司 | Primary structure of linear motor |
-
2021
- 2021-06-29 CN CN202110725676.7A patent/CN113315271A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05130765A (en) * | 1991-11-01 | 1993-05-25 | Hitachi Kiden Kogyo Ltd | Linear motor for curve |
| JP2005151735A (en) * | 2003-11-18 | 2005-06-09 | Yaskawa Electric Corp | Steel plate for armature core, armature core and manufacturing method for linear motor armature |
| CN105680581A (en) * | 2016-03-04 | 2016-06-15 | 上海电气集团股份有限公司 | High-power density permanent magnet servo motor and stator structure therefor |
| CN107994753A (en) * | 2017-12-21 | 2018-05-04 | 沈阳工业大学 | There is grain-oriented Si steel sheet proximal pole groove permanent-magnetism linear motor design method |
| CN211579712U (en) * | 2020-01-22 | 2020-09-25 | 北京精雕科技集团有限公司 | Primary iron core structure of linear motor |
| CN215009786U (en) * | 2021-06-29 | 2021-12-03 | 北京精雕科技集团有限公司 | Primary structure of linear motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567140A (en) * | 2022-04-26 | 2022-05-31 | 星宇电子(宁波)有限公司 | Linear motor and production process thereof |
| CN114567140B (en) * | 2022-04-26 | 2022-07-29 | 星宇电子(宁波)有限公司 | Linear motor and production process thereof |
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Application publication date: 20210827 |