CN113410921B - Stator structure of tooth-groove-free limited-angle torque motor - Google Patents
Stator structure of tooth-groove-free limited-angle torque motor Download PDFInfo
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- CN113410921B CN113410921B CN202110705078.3A CN202110705078A CN113410921B CN 113410921 B CN113410921 B CN 113410921B CN 202110705078 A CN202110705078 A CN 202110705078A CN 113410921 B CN113410921 B CN 113410921B
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- armature winding
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- lug plate
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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
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- 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
- H02K3/46—Fastening of windings on the stator or rotor structure
-
- 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
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a stator structure of a tooth-groove-free limited-angle torque motor, which is a radial magnetic circuit structure and comprises a shell, a positioning block, an armature winding, a lug plate and a lead wire; the casing is internally provided with an annular positioning groove, at least two positioning blocks are radially and symmetrically arranged in the annular positioning groove, an electric drive winding is embedded in each positioning block, a lug plate is arranged on one side, close to the annular positioning groove, of the electric drive winding, and a through hole for penetrating out of the lead is formed in the annular positioning groove at the corresponding position of the lug plate. The invention ensures the radial positioning of the armature winding, and simultaneously can embed the position of the lug plate in the winding, reduce the height of the lug plate relative to the end surface of the shell and avoid the damage during the combined processing; the thickness of the end face of the housing can be reduced to some extent.
Description
Technical Field
The invention belongs to the technical field of high-precision driving, and relates to a tooth-groove-free limited-angle torque motor, in particular to a stator structure of a tooth-groove-free limited-angle torque motor.
Background
As an important one of torque motors, the torque motor with the limited rotation angle is mainly characterized by high precision, small volume, high power density, fast response speed and no need of continuous operation within the range of 360 degrees. In some driving systems with higher precision, the motor is required to operate at a low rotating speed, meanwhile, the response time is short, the mechanical property is better, and meanwhile, the size of an interface between the motor and the system is higher.
The traditional tooth-groove-free limited-angle torque motor has low torque density and small output torque due to low air gap magnetic density, and cannot achieve high levels in indexes such as volume, size, peak torque and the like. With the development of small and light application systems in the fields of aerospace, weaponry and the like, the requirements on the volume and peak torque of an actuating element are higher and higher. This places increasing demands on the cogging-free limited angle torque motors, and in particular on their stator structures.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a stator structure of a cogging-free limited-angle torque motor, and can solve the problems that the cogging-free limited-angle torque motor is low in torque density, small in output torque and not suitable for a high-precision driving system with high requirements on mechanical properties.
The invention solves the practical problem by adopting the following technical scheme:
a stator structure of a tooth-slot-free limited-angle torque motor is a radial magnetic circuit structure and comprises a shell, a positioning block, an armature winding, a lug plate and a lead wire; the casing is internally provided with an annular positioning groove, at least two positioning blocks are radially and symmetrically arranged in the annular positioning groove, an electric drive winding is embedded in each positioning block, a lug plate is arranged on one side, close to the annular positioning groove, of the electric drive winding, and a through hole for penetrating out of the lead is formed in the annular positioning groove at the corresponding position of the lug plate.
And the positioning block is fan-shaped, the cross section of the positioning block is of a U-shaped structure, the end parts of two sides of the U-shaped structure are different in length, the length of the end part of the U-shaped structure is larger than that of the end part of the outer side, the height of the end part of the outer side is flush with the armature winding, and the lug plates are arranged on the end part of the outer side and the electric drive winding.
And, the number of lug is 1, and this lug is installed on arbitrary locating piece tip and armature winding.
Moreover, the lug plate 5 is provided with six wiring holes which are respectively connected with the head and the tail of the windings on the left side and the right side and two outgoing lines.
The armature winding comprises an iron core and an enameled wire, and the enameled wire is annularly wound on the outer ring of the iron core to form the armature winding; the enameled wire adopts an even-layer winding structure, and two lower pole windings are connected in parallel and are wound reversely; the left side and the right side of the lug are respectively wound with four layers, the head and the tail of the lug are arranged on one side, and the single lug is utilized to complete parallel connection.
The invention has the advantages and beneficial effects that:
1. the lengths of the two ends of the U-shaped positioning block are different, so that the radial positioning of the armature winding is ensured, and meanwhile, the position of the lug plate can be embedded into the winding, the height of the lug plate relative to the end face of the shell is reduced, and the damage caused during combined processing is avoided; the thickness of the end face of the housing can be reduced to some extent.
2. The invention adopts the mode of even-number layers of parallel windings, abandons the traditional winding mode, can provide more winding turns, improves the torque sensitivity of the motor and further improves the output torque of the motor. Meanwhile, under the condition that the current is the same, the used wire diameter is smaller, the coil is convenient to wind, and the working strength is reduced.
3. According to the invention, only the unilateral positioning block and the corresponding armature winding are provided with the lugs, so that the mention of the positioning block without the lugs can be properly reduced, the space of the armature winding is further saved, and the enameled wire with more turns can be wound on the iron core in a limited space.
4. The invention adopts the mode of even layers of parallel windings, so that the air gap magnetic field is uniform, the output torque fluctuation is small in a large working angle range, the control precision is high, and the invention has the advantages of compact structure, high precision, large torque density and good mechanical property. The method is very suitable for a driving system with higher requirements on mechanical properties.
Drawings
FIG. 1 is a schematic structural view of a stator of a tooth-slot-free limited-angle torque motor of the present invention, cut along an axis;
FIG. 2 is a schematic diagram of a stator armature winding of a slotless limited angle torque motor of the present invention;
FIG. 3 is an enlarged view of a portion of the lug of FIG. 2;
FIG. 4 is a perspective view (front view) of the overall structure of the present invention;
FIG. 5 is a perspective view (back side) of the overall structure of the present invention;
description of reference numerals:
1-a machine shell; 2-a first positioning block; 3-a second positioning block; 4, armature winding; 4-1 iron core; 4-2, enamelled wires; 5-a lug plate; 6-leads (two); 7-mounting holes.
Detailed Description
The embodiments of the invention will be described in further detail below with reference to the accompanying drawings:
a stator structure of a tooth-slot-free limited-angle torque motor is a radial magnetic circuit structure as shown in figures 1 to 4, and comprises a machine shell 1, a first positioning block 2, a second positioning block 3, an armature winding 4, a lug plate 5 and a lead wire 6; the casing is internally provided with an annular positioning groove, at least two positioning blocks are radially and symmetrically arranged in the annular positioning groove, an electric drive winding is embedded in each positioning block, a lug plate is arranged on one side, close to the annular positioning groove, of the electric drive winding, and a through hole for penetrating out of the lead is formed in the annular positioning groove at the corresponding position of the lug plate.
In this embodiment, the armature winding 4 includes an iron core 4-1 and an enameled wire 4-2, and the enameled wire 4-2 is annularly wound around an outer ring of the iron core 4-1 to form the armature winding; the enameled wire adopts an even-layer winding structure, and two lower pole windings are connected in parallel and are wound reversely; the four layers of the wiring lugs 5 are wound on the left side and the right side of the wiring lug respectively, the heads and the tails of the four layers are arranged on one side, and the wiring lugs 5 are connected in parallel.
The invention adopts the winding mode of head-to-head connection, tail-to-tail connection, head-to-output and tail-to-output, and abandons the traditional connection winding mode of a cogging-free limited corner torque motor.
In this embodiment, the locating piece is fan-shaped, and its cross section is U type structure, and this U type structure both sides tip length is different, and the length of its inboard tip is greater than the length of outside tip, the height and the armature winding parallel and level of outside tip, install the lug on this outside tip and the electricity drive winding.
In this embodiment, the number of the lug plates is 1, and the lug plate is installed on the end part of any positioning block and the armature winding.
In this embodiment, the lug is mounted on the first positioning block 2 by a cold set glue.
In this embodiment, the lug plate has six wiring holes, which are respectively connected with the head and the tail of the left and right windings and two outgoing lines.
The assembly process of the invention is as follows:
after the first positioning block 2 and the second positioning block 3 are fixed in the annular positioning grooves, the electric drive winding is embedded into the first positioning block 2 and the second positioning block 3, and the armature winding 4 is encapsulated in the casing 1 by epoxy resin glue to form a stator of the motor.
In the embodiment, the volume of the second positioning block 3 without the lug plate can be properly reduced, the space of the armature winding 4 is saved, and the enameled wire 4-2 with more turns can be wound on the iron core 4-1 in a limited space.
In this embodiment, the casing 1 has a flange structure, which facilitates installation of the stator and the system.
In this embodiment, the central position of the end face of the positioning block and the corresponding position of the casing 1 are respectively provided with a mounting hole 7, so that the armature winding 4 can be conveniently positioned.
In this embodiment, the lead is connected to a power source to supply power to the motor.
In the present embodiment, the armature winding 4 is formed by integrating the iron core 4-1 and the enamel wire 4-2. The casing 1 is a flange structure, and the armature winding 4 and the casing 1 are fixed by using cold setting glue.
The working principle of the invention is as follows:
the rotor magnetic steel sends out magnetic lines of force, and the magnetic lines of force return to the rotor magnetic steel after passing through the armature winding 4 to form a closed loop. The stator armature winding 4 is located in a magnetic field, and according to the faraday's law of electromagnetic induction, electromagnetic force is generated when the armature winding 4 is energized. According to the winding mode of coils with two lower poles connected in parallel and wound reversely, electromagnetic force along the circumferential direction is generated to drive a motor rotor to rotate. In the required range, the larger the electrified current is, the larger the motor output torque is.
The invention adopts an even-number layer winding structure, and the lower windings of two poles are connected in parallel and are wound reversely; four layers are respectively wound on the left side and the right side of the lug plate 5, the ends of the four layers are arranged on one side, more coil turns can be wound in a limited space by utilizing a winding mode that a single lug plate is connected in parallel, the output torque of a motor is increased, and an armature winding is encapsulated in a shell by using cold setting glue, so that the structure is compact, the number of parts is small, and the reliability is high.
It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention includes, but is not limited to, the embodiments described in this detailed description, as well as other embodiments that can be derived by one skilled in the art from the teachings herein, and are within the scope of the present invention.
Claims (4)
1. The utility model provides a finite corner torque motor stator structure of no tooth groove, is radial magnetic structure, its characterized in that: the motor comprises a shell, a positioning block, an armature winding, a lug plate and a lead wire; the shell is internally provided with an annular positioning groove, at least two positioning blocks are radially and symmetrically arranged in the annular positioning groove, an armature winding is embedded in each positioning block, one side of each armature winding, which is close to the annular positioning groove, is provided with a lug plate, and the annular positioning groove at the corresponding position of the lug plate is provided with a through hole for the lead to penetrate out;
the armature winding comprises an iron core and an enameled wire, and the enameled wire is annularly wound on the outer ring of the iron core to form the armature winding; the enameled wire adopts an even-layer winding structure, and two lower pole windings are connected in parallel and are wound reversely; the left side and the right side of the lug are respectively wound with four layers, the head and the tail of the lug are arranged on one side, and the single lug is utilized to complete parallel connection.
2. The stator structure of a slotless limited angle torque motor according to claim 1, characterized in that: the positioning block is fan-shaped, the cross section of the positioning block is of a U-shaped structure, the end parts of two sides of the U-shaped structure are different in length, the length of the end part of the U-shaped structure is larger than that of the end part of the outer side, the height of the end part of the outer side is flush with that of the armature winding, and lugs are mounted on the end part of the outer side and the armature winding.
3. The stator structure of a slotless limited angle torque motor according to claim 1, characterized in that: the number of the lug plates is 1, and the lug plates are arranged at the end part of any positioning block and on the armature winding.
4. The stator structure of a slotless limited angle torque motor according to claim 1, wherein: the lug plate 5 is provided with six wiring holes which are respectively connected with the head and the tail of the winding on the left side and the right side and two outgoing lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705078.3A CN113410921B (en) | 2021-06-24 | 2021-06-24 | Stator structure of tooth-groove-free limited-angle torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110705078.3A CN113410921B (en) | 2021-06-24 | 2021-06-24 | Stator structure of tooth-groove-free limited-angle torque motor |
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| Publication Number | Publication Date |
|---|---|
| CN113410921A CN113410921A (en) | 2021-09-17 |
| CN113410921B true CN113410921B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110705078.3A Active CN113410921B (en) | 2021-06-24 | 2021-06-24 | Stator structure of tooth-groove-free limited-angle torque motor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2273470Y (en) * | 1996-10-22 | 1998-01-28 | 华中理工大学 | Disc type permanent magnet motor capable of realizing weak magnetic control |
| CN101989776A (en) * | 2010-11-05 | 2011-03-23 | 中国船舶重工集团公司第七○七研究所 | Limited angle brushless torque motor with self-positioning function |
| CN102025238A (en) * | 2010-11-05 | 2011-04-20 | 中国船舶重工集团公司第七0七研究所 | Novel limited rotating angle direct-current moment motor |
| CN205753727U (en) * | 2016-05-20 | 2016-11-30 | 中国电子科技集团公司第二十一研究所 | High linearity moving-magnetic type finite corner motor |
| CN106352980A (en) * | 2016-08-17 | 2017-01-25 | 中国电子科技集团公司第四十研究所 | High-precision grating positioning device directly driven by a limited angle motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5555858B2 (en) * | 2008-07-04 | 2014-07-23 | 多摩川精機株式会社 | Finite angle motor |
| JP2010223346A (en) * | 2009-03-24 | 2010-10-07 | Tamagawa Seiki Co Ltd | Deceleration structure of space stabilizing device |
| CN204168097U (en) * | 2014-10-30 | 2015-02-18 | 中国电子科技集团公司第二十一研究所 | Inductor type finite angle brushless moment motor |
| CN204290662U (en) * | 2014-10-30 | 2015-04-22 | 中国电子科技集团公司第二十一研究所 | New structure finite angle brushless moment motor |
| JP6881876B2 (en) * | 2015-04-21 | 2021-06-02 | アーメド エルガミル，モハメド | Electromagnetic torque motor with high torque and limited angle |
-
2021
- 2021-06-24 CN CN202110705078.3A patent/CN113410921B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2273470Y (en) * | 1996-10-22 | 1998-01-28 | 华中理工大学 | Disc type permanent magnet motor capable of realizing weak magnetic control |
| CN101989776A (en) * | 2010-11-05 | 2011-03-23 | 中国船舶重工集团公司第七○七研究所 | Limited angle brushless torque motor with self-positioning function |
| CN102025238A (en) * | 2010-11-05 | 2011-04-20 | 中国船舶重工集团公司第七0七研究所 | Novel limited rotating angle direct-current moment motor |
| CN205753727U (en) * | 2016-05-20 | 2016-11-30 | 中国电子科技集团公司第二十一研究所 | High linearity moving-magnetic type finite corner motor |
| CN106352980A (en) * | 2016-08-17 | 2017-01-25 | 中国电子科技集团公司第四十研究所 | High-precision grating positioning device directly driven by a limited angle motor |
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| CN113410921A (en) | 2021-09-17 |
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