CN117856485A - Rotor structure and method of shaft sleeve-free commutator sinking type direct-current servo motor - Google Patents
Rotor structure and method of shaft sleeve-free commutator sinking type direct-current servo motor Download PDFInfo
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- CN117856485A CN117856485A CN202410108154.6A CN202410108154A CN117856485A CN 117856485 A CN117856485 A CN 117856485A CN 202410108154 A CN202410108154 A CN 202410108154A CN 117856485 A CN117856485 A CN 117856485A
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- servo motor
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 33
- 239000003822 epoxy resin Substances 0.000 claims description 26
- 229920000647 polyepoxide Polymers 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
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- 238000005530 etching Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
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- 230000008023 solidification Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
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- 238000010030 laminating Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 10
- 238000013461 design Methods 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 6
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- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
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- 230000002159 abnormal effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 3
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- 230000005856 abnormality Effects 0.000 description 1
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- 210000003298 dental enamel Anatomy 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention belongs to the technical field of motor design and processes, and discloses a rotor structure of a shaft sleeve-free commutator sinking type direct current servo motor. The structure of the invention adopts a shaft-sleeve-free design form, a rotor shaft sleeve made of metal is omitted, a rotor iron core and a rotor end piece are directly connected, the volume and the weight of the rotor are greatly reduced while the processing executability is ensured, the radial space of an iron core component can be further increased, the space of an armature winding can be increased on the same axial length, the number of winding turns is increased, the motor can realize larger mechanical property under the same outline dimension of the rotor, and the problems of severe requirement of a small-space high-precision driving system on the weight of an executive element rotor and safety and reliability under long-term friction rotation of a carbon brush and a commutator are solved.
Description
Technical Field
The invention belongs to the technical field of motor design and processes, relates to a shaft-sleeve-free direct-current servo motor, and particularly relates to a rotor structure and a rotor method of a shaft-sleeve-free commutator sinking type direct-current servo motor.
Background
Compared with other motors, the direct current servo motor adopts the mechanical commutation of the electric brush, has the characteristics of good mechanical property, high operability and the like, and is widely applied to the field of military and civil industry. The motor mainly comprises a stator (magnetic steel component), a rotor, a brush holder component, a shafting structure and the like. The traditional rotor is generally manufactured by an armature winding, an iron core component, a commutator, a shaft sleeve and the like through the processes of welding, winding-off, glue filling and the like. Along with the development of miniature and lightweight weapon systems in the fields of weapon guidance, aerospace and the like, the volume weight and performance reliability of an executive component are also higher and higher. Therefore, how to innovate the rotor structure to achieve the design objective of light weight, excellent performance and high reliability is important.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a rotor structure and a rotor method of a shaft sleeve-free commutator sinking type direct current servo motor.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the rotor structure of the shaft sleeve-free commutator sinking type direct current servo motor comprises an armature winding, a rotor commutator, a rotor iron core, rotor end pieces and epoxy resin glue, wherein the rotor commutator, the rotor iron core and the rotor end pieces are connected through the epoxy resin glue;
the rotor core is arranged along the axial direction, two axial ends of the rotor core are closely and coaxially connected with each other to form a rotor end piece, an armature winding is closely wound on the rotor core, and a coil terminal is reserved on the armature winding;
the rotor commutator is arranged along the radial direction, and the rotor commutator is inserted along the axial direction of the rotor core; the radial diameter of the rotor commutator is smaller than that of the rotor core;
the rotor commutator consists of a plurality of rotor commutator segments, the tail end of the rotor commutator is provided with a welding groove, and the coil wiring terminal is welded with the welding groove; the rotor reversing pieces are uniformly distributed at intervals along the circumferential direction, two adjacent rotor reversing pieces are connected through epoxy resin glue, an angle guiding groove is formed in the epoxy resin glue between the two adjacent rotor reversing pieces, the angle guiding groove is radially arranged and arranged on the outer side of the rotor reversing device, and angle guiding grooves close to the outer surface of the reversing device and angle guiding grooves are formed in the two adjacent rotor reversing pieces.
Further, the sinking distance of the rotor commutator should be as follows: radial diameter d of rotor core Iron core Radial diameter d of rotor commutator Commutator device ＝0.06mm。
Further, the undercut depth h of the rotor commutator 0 Namely, the depth of the chamfer groove along the radial direction is as follows: h is a 0 Radial diameter d of rotor core Iron core /50；
The lead angle C of the rotor commutator is as follows: c=v×h 0 Wherein, v is an adjustment coefficient, and the value range is generally 0.1-0.15.
Further, the rotor core is formed by laminating rotor punching sheets, and rotor end sheets are coaxially connected with two ends of the rotor core.
And further, the armature winding is formed by embedding a coil into a tooth slot of a rotor core by using an enameled wire according to a winding wiring diagram.
Further, the rotor core is made of a precise alloy.
Further, the rotor end pieces are insulating end pieces, and are made of epoxy resin hard laminate EPGC 201.
Further, the material of the bottom layer of the rotor commutator is red copper, and a 0.01mm gold layer is electroplated on the surface of the rotor commutator.
The method for assembling the rotor structure comprises the following steps:
coaxially mounting the rotor end pieces at two axial ends of a rotor core, and forming a rotor core assembly by the rotor end pieces and the rotor core assembly; sequentially winding a coil in a tooth slot of a rotor core according to a winding wiring diagram to form an armature winding, inserting the armature winding into a rotor commutator after finishing shaping, welding a coil terminal with a welding slot of the rotor commutator, adding epoxy resin glue for glue pouring treatment, glue pouring and forming the armature winding, the rotor commutator and a rotor core assembly by using the epoxy resin glue, machining and finishing an excircle, an end face and an inner hole of the rotor after high-temperature solidification and stabilization, and forming the rotor after etching the commutator and an insulating glue layer therebetween.
The invention has the advantages and effects that:
1. the structure of the invention comprises an armature winding, a rotor commutator, a rotor core, a rotor end piece and epoxy resin glue, adopts a non-shaft sleeve design form, omits a rotor shaft sleeve made of metal materials, ensures the processing executability, simultaneously greatly reduces the volume and weight of the rotor, further increases the radial space of an iron core assembly, increases the space of the armature winding on the same axial length, increases the number of winding turns, ensures that the motor realizes larger mechanical property under the same overall dimension of the rotor, and solves the problem that a narrow space high-precision driving system has severe requirements on the weight of an actuator rotor.
2. The radial diameter of the rotor commutator is smaller than that of the rotor core, namely, the rotor commutator adopts a sinking design, so that carbon powder worn by a carbon brush of a motor under long-term rotation cannot be accumulated on the rotor core, the problem of abnormal insulation is avoided, and the use effect is ensured; in addition, the rotor commutator is provided with the angle guide groove and the angle guide, and the chamfering structure is beneficial to reducing rotor commutation friction, improving commutation efficiency and enhancing use reliability.
Drawings
FIG. 1 is a schematic cross-sectional view of a motor rotor structure according to the present invention;
FIG. 2 is an enlarged schematic view of the structural connection of the lower carved shape of the motor rotor structure of the invention, namely the rotor commutator segments, the angle guide grooves, the angle guide and the epoxy resin glue;
FIG. 3 is a schematic perspective view (front) of an overall structural connection of the motor rotor structure of the present invention;
fig. 4 is a schematic perspective view (reverse side) of the overall structural connection of the motor rotor structure of the present invention.
Detailed Description
The invention will now be further described in connection with specific examples which are intended to be illustrative only and not limiting in any way.
The raw materials used in the invention are conventional commercial products unless otherwise specified, the methods used in the invention are conventional methods in the art unless otherwise specified, and the mass of each substance used in the invention is conventional. Structures, connection relationships, etc., not described in detail in the present invention, may be understood as conventional means in the art.
The rotor structure of the shaft sleeve-free commutator sinking type direct current servo motor comprises an armature winding 1, a rotor commutator 2, a rotor iron core 3, a rotor end piece 4 and epoxy resin glue 5, wherein the rotor commutator, the rotor iron core and the rotor end piece are connected through the epoxy resin glue;
the rotor core is arranged along the axial direction, two axial ends of the rotor core are closely and coaxially connected with each other to form a rotor end piece, an armature winding is tightly wound on the rotor core, and a coil terminal (not shown in the figure) is reserved on the armature winding;
the rotor commutator is arranged along the radial direction, and the rotor commutator is inserted along the axial direction of the rotor core; the radial diameter of the rotor commutator is smaller than that of the rotor core; the radial diameter of the rotor commutator is smaller than that of the rotor core, namely, the rotor commutator adopts a sinking design, so that carbon powder worn down by a carbon brush of a motor under long-term rotation cannot be accumulated on the rotor core, the problem of abnormal insulation is caused, and the use effect is ensured.
The rotor commutator consists of a plurality of rotor commutator segments 21, the tail end of the rotor commutator is provided with a welding groove (not shown in the figure), and the coil terminal is welded with the welding groove; the rotor commutator segments are uniformly distributed at intervals along the circumferential direction, two adjacent rotor commutator segments are connected through epoxy resin glue, the epoxy resin glue between the two adjacent rotor commutator segments is provided with a chamfer groove 22, the chamfer groove is radially arranged and arranged on the outer side of the rotor commutator, and the chamfer groove close to the outer surface of the commutator and the two adjacent rotor commutator segments are provided with chamfer angles 23.
The structure of the invention comprises an armature winding, a rotor commutator, a rotor core, a rotor end piece and epoxy resin glue, adopts a non-shaft sleeve design form, omits a rotor shaft sleeve made of metal materials, ensures the processing executability, simultaneously greatly reduces the volume and weight of the rotor, further increases the radial space of an iron core assembly, increases the space of the armature winding on the same axial length, increases the winding number of turns, ensures that the motor realizes larger mechanical property under the same overall dimension of the rotor, and solves the problems of harsh requirement of a small-space high-precision driving system on the weight of an actuator rotor and safety and reliability under long-term friction rotation of a carbon brush and the commutator.
Meanwhile, the radial diameter of the rotor commutator is smaller than that of the rotor core, namely the rotor commutator adopts a sinking design, so that carbon powder worn by a carbon brush of a motor under long-term rotation cannot be accumulated on the rotor core, the problem of abnormal insulation is caused, and the use effect is ensured; in addition, the rotor commutator is provided with the angle guide groove and the angle guide, and adopts a chamfer structure, thereby being beneficial to reducing rotor commutation friction, improving commutation efficiency and enhancing use reliability.
In this embodiment, the sinking distance of the rotor commutator should be as follows: rotor ironRadial diameter d of core Iron core Radial diameter d of rotor commutator Commutator device ＝0.06mm。
In the embodiment, the undercut depth h of the rotor commutator 0 Namely, the depth of the chamfer groove along the radial direction is as follows: h is a 0 Radial diameter d of rotor core Iron core /50；
The lead angle C of the rotor commutator is as follows: c=νh0, wherein ν is an adjustment coefficient, and the value range is generally 0.1-0.15.
In this embodiment, the rotor core is made by stacking rotor punching sheets, and the rotor end sheets are coaxially connected with two ends of the rotor core;
in this embodiment, the armature winding is formed by embedding a coil winding into a slot of a rotor core using an enamel wire according to a winding wiring diagram, and can be operated with reference to patent publication 202110705078.3.
In this embodiment, the material of the rotor core is a precise alloy, and the magnetic conduction efficiency of the alloy after heat treatment is higher, which is helpful for improving the electromagnetic performance of the motor.
In this embodiment, the rotor end piece is an insulating end piece, ensuring the use effect, for example, the rotor end piece is made of an epoxy resin hard laminate EPGC 201. More preferably, in order to ensure the flatness of both sides of E, F, the thickness of the rotor end piece needs to be increased appropriately, and an epoxy resin hard laminate EPGC201 with a thickness of 0.5mm is generally selected for processing.
In the embodiment, the bottom layer of the rotor commutator is made of red copper, a 0.01mm gold layer is plated on the surface of the rotor commutator, and metal with lower resistivity can be used for reducing contact resistance in the motor rotation commutation process, reducing current loss in the process and increasing armature current in a working state.
In this embodiment, the epoxy resin glue is a hard glue material.
The assembling method of the rotor structure of the shaft sleeve-free commutator sinking type direct current servo motor comprises the following steps:
the rotor end pieces are coaxially arranged at two axial ends of the rotor core, and the rotor end pieces and the rotor core form a rotor core assembly. Sequentially winding a coil in a tooth slot of a rotor core assembly according to a winding wiring diagram to form an armature winding, inserting the armature winding into a rotor commutator after shaping, welding a coil terminal with a welding slot of the rotor commutator, adding epoxy resin glue for glue filling treatment, carrying out glue filling forming on the armature winding, the rotor commutator and the rotor core assembly by using the epoxy resin glue, carrying out machining and finish machining on an excircle, an end face and an inner hole of the rotor after high-temperature solidification and stabilization, and forming the rotor after etching the commutator and an insulating glue layer between the commutator.
The working principle of the structure of the invention can be as follows:
the stator magnetic steel emits magnetic force lines, and the magnetic force lines return to the stator magnetic steel (the other pole) after passing through the armature winding to form a closed loop. According to Faraday's law of electromagnetic induction, when the external power supply is connected with the armature winding to generate electromagnetic force, the commutation action of the rotor commutator makes the current directions of the conductors of the same polarity of the stator magnetic steel be the same, and the current directions of the conductors of different polarities are opposite, so that all conductors generate moment in the same rotation direction to drive the rotor to rotate continuously.
According to the submerged design of the rotor commutator, carbon powder worn by a carbon brush of the motor under long-term rotation cannot be accumulated on a rotor core, so that the problem of insulation abnormality is solved. The rotor commutator chamfering structure is beneficial to reducing rotor commutation friction, improving commutation efficiency and enhancing use reliability.
Although embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments.
Claims (10)
1. A rotor structure of a shaft sleeve-free commutator sinking type direct current servo motor is characterized in that: the structure comprises an armature winding, a rotor commutator, a rotor iron core, a rotor end piece and epoxy resin glue, wherein the rotor commutator, the rotor iron core and the rotor end piece are connected through the epoxy resin glue;
the rotor core is arranged along the axial direction, two axial ends of the rotor core are closely and coaxially connected with each other to form a rotor end piece, an armature winding is closely wound on the rotor core, and a coil terminal is reserved on the armature winding;
the rotor commutator is arranged along the radial direction, and the rotor commutator is inserted along the axial direction of the rotor core; the radial diameter of the rotor commutator is smaller than that of the rotor core;
the rotor commutator consists of a plurality of rotor commutator segments, and the tail end of the rotor commutator is provided with a welding groove; the rotor reversing pieces are uniformly distributed at intervals along the circumferential direction, two adjacent rotor reversing pieces are connected through epoxy resin glue, an angle guiding groove is formed in the epoxy resin glue between the two adjacent rotor reversing pieces, the angle guiding groove is radially arranged and arranged on the outer side of the rotor reversing device, and angle guiding grooves close to the outer surface of the reversing device and angle guiding grooves are formed in the two adjacent rotor reversing pieces.
2. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: the sinking distance of the rotor commutator should be as follows: radial diameter d of rotor core Iron core Radial diameter d of rotor commutator Commutator device ＝0.06mm。
3. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: depth h of the rotor commutator 0 Namely, the depth of the chamfer groove along the radial direction is as follows: h is a 0 Radial diameter d of rotor core Iron core /50；
The lead angle C of the rotor commutator is as follows: c=νh0, wherein ν is an adjustment coefficient, and the value range is generally 0.1-0.15.
4. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: the rotor core is formed by laminating rotor punching sheets, and rotor end sheets are coaxially connected with two ends of the rotor core.
5. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: the armature winding is formed by winding and embedding a coil into a tooth slot of a rotor core by using an enameled wire according to a winding wiring diagram.
6. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: the rotor core is made of precise alloy.
7. The rotor structure of a submersible direct current servo motor without a shaft sleeve commutator as defined in claim 1, wherein: the rotor end piece is an insulating end piece.
8. The rotor structure of the shaft sleeve-free commutator sinking type direct-current servo motor as defined in claim 7, wherein: the rotor end pieces are made of an epoxy resin hard laminate EPGC 201.
9. The rotor structure of a shaftless commutator sinking dc servo motor according to any one of claims 1 to 8, wherein: the material of the bottom layer of the rotor commutator is red copper, and a 0.01mm gold layer is electroplated on the surface of the red copper.
10. A method of assembling a rotor structure according to any one of claims 1 to 9, wherein: the method comprises the following steps:
coaxially mounting the rotor end pieces at two axial ends of a rotor core, and forming a rotor core assembly by the rotor end pieces and the rotor core assembly; sequentially winding a coil in a tooth slot of a rotor core assembly according to a winding wiring diagram to form an armature winding, inserting the armature winding into a rotor commutator after shaping, welding a coil terminal with a welding slot of the rotor commutator, adding epoxy resin glue for glue filling treatment, carrying out glue filling forming on the armature winding, the rotor commutator and the rotor core assembly by using the epoxy resin glue, carrying out machining and finish machining on an excircle, an end face and an inner hole of the rotor after high-temperature solidification and stabilization, and forming the rotor after etching the commutator and an insulating glue layer between the commutator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410108154.6A CN117856485A (en) | 2024-01-26 | 2024-01-26 | Rotor structure and method of shaft sleeve-free commutator sinking type direct-current servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410108154.6A CN117856485A (en) | 2024-01-26 | 2024-01-26 | Rotor structure and method of shaft sleeve-free commutator sinking type direct-current servo motor |
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| Publication Number | Publication Date |
|---|---|
| CN117856485A true CN117856485A (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410108154.6A Pending CN117856485A (en) | 2024-01-26 | 2024-01-26 | Rotor structure and method of shaft sleeve-free commutator sinking type direct-current servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117856485A (en) |
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- 2024-01-26 CN CN202410108154.6A patent/CN117856485A/en active Pending
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