CN217769780U - Bearing-free servo motor easy to assemble - Google Patents
Bearing-free servo motor easy to assemble Download PDFInfo
- Publication number
- CN217769780U CN217769780U CN202220356415.2U CN202220356415U CN217769780U CN 217769780 U CN217769780 U CN 217769780U CN 202220356415 U CN202220356415 U CN 202220356415U CN 217769780 U CN217769780 U CN 217769780U
- Authority
- CN
- China
- Prior art keywords
- encoder
- motor
- circuit board
- printed circuit
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 17
- 238000013507 mapping Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 230000005284 excitation Effects 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005672 electromagnetic field Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Abstract
The utility model discloses a no bearing servo motor of easy assembly, including the motor housing, still include encoder shell, signal interface, first fixed screw, encoder stator printed circuit board, encoder rotor printed circuit board, axle sleeve, second fixed screw, encoder rotor printed circuit board carrier, third fixed screw, motor rotor magnet steel, motor rotor carrier, motor solenoid carrier and fourth fixed screw; the encoder shell is fixed on the motor shell through a first fixing screw, and the encoder shell and the motor shell form an object placing space for installing the electromagnetic induction type encoder. The utility model discloses, servo motor itself does not have motor axis and bearing, low in manufacturing cost, and the customer need not replace current mould simultaneously, but direct assembly uses.
Description
Technical Field
The utility model relates to an easy no bearing servo motor technical field of assembly specifically is an easy no bearing servo motor of assembly.
Background
The servo motor is an engine for controlling mechanical elements to operate in a servo system, and is an indirect speed change device of a supplementary motor. The servo motor can control the speed and position accuracy accurately, and can convert the voltage signal into torque and rotating speed to drive a control object. The common general servo motor generally comprises a motor stator, a motor rotor, a photoelectric encoder (or a magnetic encoder), a motor shell, a bearing and a motor middle shaft, and is simple in structure and smooth in production and assembly.
However, with the continuous knowledge and use of servomotors by the market, the disadvantages of servomotors of this general type slowly emerge: when the terminal customer switches to the universal servo motor, the mold needs to be customized again according to the structure of the motor, so that scientific research and production cost are increased; although the photoelectric encoder is high in precision and resolution, the photoelectric encoder is fragile and not resistant to oil stain, the magnetic encoder cannot support the motor shaft penetrating installation and application, and meanwhile, the precision and the resolution are relatively low. Therefore, a new servo motor needs to be redesigned to solve the technical defects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an easy no bearing servo motor who assembles has solved the problem that exists among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme: a bearingless servo motor easy to assemble comprises a motor shell, an encoder shell, a signal interface, a first fixing screw, an encoder stator printed circuit board, an encoder rotor printed circuit board, a shaft sleeve, a second fixing screw, an encoder rotor printed circuit board carrier, a third fixing screw, motor rotor magnetic steel, a motor rotor carrier, a motor coil carrier and a fourth fixing screw;
the encoder shell is fixed on the motor shell through a first fixing screw, and an object placing space is formed by the encoder shell and the motor shell and used for installing the electromagnetic induction type encoder;
the motor coil is arranged on the motor coil carrier;
the motor rotor magnetic steel is arranged on the motor rotor carrier;
the encoder stator printed circuit board is arranged on the inner side of the encoder shell through a third fixing screw;
the encoder rotor printed circuit board is arranged on a shaft sleeve, the shaft sleeve is arranged on an encoder rotor printed circuit board carrier through a second fixing screw, and the encoder rotor printed circuit board carrier is arranged on a motor rotor carrier through a fourth fixing screw;
the encoder stator printed circuit board comprises at least one group of exciting coils, a group of receiving coil assemblies and a signal processing circuit.
Preferably, the signal interface comprises an encoder power supply, an encoder ground, an encoder position signal line and a motor housing ground signal line.
Preferably, the motor housing is connected to an external ground through a motor housing ground signal line.
Preferably, the receiving coil assembly comprises a plurality of receiving coils, a plurality of similar sine closed metal wires are sequentially wound on the plurality of receiving coils along the circumferential direction, and the current directions of two adjacent similar sine closed metal wires are opposite.
Preferably, the excitation coil is formed by one or more circles of metal wires wound in the circumferential direction in series.
Preferably, the perpendicular mapping pattern of the excitation coils on the plane of the encoder stator printed circuit board encloses the receive coil assembly.
Preferably, the encoder rotor printed circuit board comprises a plurality of periodically repeated metal blades.
Preferably, the vertical mapping pattern of the metal blades on the plane of the encoder stator printed circuit board overlaps the receive coil assembly.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model has the advantages that the servo motor has no motor center shaft and bearing, the manufacturing cost is low, and meanwhile, the client can be directly assembled and used without replacing the existing mould;
(2) The utility model discloses, electromagnetic induction formula encoder precision and resolution ratio are high, support multiple assembly methods such as wearing the axle.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is an external view of the present invention;
fig. 2 is a transverse cross-sectional view of the present invention;
FIG. 3 is a schematic view of the present invention without an encoder;
fig. 4 is a schematic top view of the present invention;
fig. 5 is a schematic view of the mounting of the electromagnetic induction type encoder stator printed circuit board of the present invention;
fig. 6 is the schematic view of the mounting of the printed circuit board of the rotor of the electromagnetic induction type encoder of the present invention.
In the figure: 1. an encoder housing; 2. a signal interface; 3. a motor housing; 4. a first fixing screw; 5. an encoder stator printed circuit board; 6. an encoder rotor printed circuit board; 7. a shaft sleeve; 8. a second fixing screw; 9. an encoder rotor printed circuit board carrier; 10. a third fixing screw; 11. motor rotor magnetic steel; 12. a motor rotor carrier; 13. a motor coil carrier; 14. a fourth fixing screw; 15. a motor housing ground signal line; 16. a signal processing circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, in an embodiment of the present invention, an easy-to-assemble bearingless servo motor includes an encoder casing 1 (for convenience of observation, only half of the encoder casing is shown in the figure), a signal interface 2, a motor casing 3, a first fixing screw 4, an encoder stator printed circuit board 5, an encoder rotor printed circuit board 6, a shaft sleeve 7, a second fixing screw 8, an encoder rotor printed circuit board carrier 9, a third fixing screw 10, a motor rotor magnetic steel 11, a motor rotor carrier 12, a motor coil carrier 13, a fourth fixing screw 14, and a motor casing ground signal line 15.
The encoder shell 1 is fixed on the motor shell 3 through a fixing screw 4, and the encoder shell 1 and the motor shell 3 form an object placing space for installing the electromagnetic induction type encoder;
the signal interface 2 comprises an encoder power supply, an encoder ground, an encoder position signal line and a motor shell ground signal line 15;
the motor housing 3 is connected with the external ground through a ground signal line 15 for shielding external interference;
motor coils (not shown for ease of viewing) are mounted on the motor coil carrier 13;
the motor rotor magnetic steel 11 is arranged on the motor rotor carrier 12;
the encoder stator printed circuit board 5 is arranged on the inner side of the encoder shell 1 through a third fixing screw 10;
the encoder rotor printed circuit board 6 is arranged on a shaft sleeve 7, the shaft sleeve 7 is arranged on an encoder rotor printed circuit board carrier 9 through a second fixing screw 8, and the encoder rotor printed circuit board carrier 9 is arranged on a motor rotor carrier 12 through a fixing screw 14;
the encoder stator printed circuit board 5 comprises at least one group of exciting coils, a group of receiving coil assemblies and a signal processing circuit 16;
the receiving coil assembly comprises a plurality of receiving coils, a plurality of quasi-sinusoidal closed metal wires are sequentially wound on the plurality of receiving coils along the circumferential direction, and the current directions of two adjacent sinusoidal closed metal wires are opposite.
The exciting coil is formed by one or more circles of metal wires which are wound in series along the circumferential direction.
The vertical mapping pattern of the excitation coils on the plane of the encoder stator printed circuit board 5 encases the receive coil assembly.
The encoder rotor printed circuit board 6 comprises a plurality of periodically repeated metal blades;
the vertical mapping pattern of the metal blades on the plane of the encoder stator printed circuit board 5 overlaps the receive coil assembly.
Based on above-mentioned no bearing servo motor who easily assembles, its working method is as follows:
after the system is powered, the signal processing circuit is matched with the exciting coil to generate high-frequency periodic alternating voltage and current, and alternating current flowing through the exciting coil forms an alternating electromagnetic field in the peripheral area of the alternating current.
As can be seen from the faraday's law of electromagnetic induction, a change in the magnetic flux passing through the closed coil generates an induced electromotive force on the closed coil. When the alternating electromagnetic field generated on the exciting coil passes through the closed receiving coil assembly, an alternating induced electromotive force with the same frequency is generated on each sector loop coil due to the alternation of the magnetic flux passing through the closed receiving coil assembly.
The metal blades on the encoder rotor printed circuit board 6 are used for influencing the coupling relation between the exciting coil and the receiving coil, when the motor rotor rotates, the motor rotor carrier 12, the encoder rotor printed circuit board carrier 9, the shaft sleeve 7 and the encoder rotor printed circuit board 6 are driven to rotate together, and the alternating electromagnetic field of the exciting coil enables the metal blades on the encoder rotor printed circuit board 6 to generate an eddy current field, so that the alternating electromagnetic field strength of the exciting coil is weakened. The non-uniform electromagnetic field strength changes the induced electromotive force on the receiving coil. When the encoder rotor printed circuit board 6 rotates for one circle relative to the encoder stator printed circuit board 5, receiving signals of multiple periods are respectively obtained on the receiving coil; after the received signal is input into the signal processing circuit, the high-precision high-resolution coding signal is output through calculation and transmitted to the motor control system, so that the motor start and stop, the speed control, the power density monitoring and the like are accurately controlled.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A bearingless servo motor easy to assemble comprises a motor shell, and is characterized by further comprising an encoder shell, a signal interface, a first fixing screw, an encoder stator printed circuit board, an encoder rotor printed circuit board, a shaft sleeve, a second fixing screw, an encoder rotor printed circuit board carrier, a third fixing screw, motor rotor magnetic steel, a motor rotor carrier, a motor coil carrier and a fourth fixing screw;
the encoder shell is fixed on the motor shell through a first fixing screw, and an object placing space is formed by the encoder shell and the motor shell and used for installing the electromagnetic induction type encoder;
the motor coil is arranged on the motor coil carrier;
the motor rotor magnetic steel is arranged on the motor rotor carrier;
the encoder stator printed circuit board is arranged on the inner side of the encoder shell through a third fixing screw;
the encoder rotor printed circuit board is arranged on a shaft sleeve, the shaft sleeve is arranged on an encoder rotor printed circuit board carrier through a second fixing screw, and the encoder rotor printed circuit board carrier is arranged on a motor rotor carrier through a fourth fixing screw;
the encoder stator printed circuit board comprises at least one group of exciting coils, a group of receiving coil assemblies and a signal processing circuit.
2. An easy-to-assemble bearingless servo motor according to claim 1, wherein: the signal interface comprises an encoder power supply, an encoder ground, an encoder position signal line and a motor shell grounding signal line.
3. An easy-to-assemble bearingless servo motor according to claim 2, wherein: the motor housing is connected with the external ground through a motor housing ground signal line.
4. An easy-to-assemble bearingless servomotor according to claim 1, wherein: the receiving coil assembly comprises a plurality of receiving coils, a plurality of similar sine closed metal wires are sequentially wound on the receiving coils along the circumferential direction, and the current directions of two adjacent similar sine closed metal wires are opposite.
5. An easy-to-assemble bearingless servomotor according to claim 1, wherein: the exciting coil is formed by connecting one or more circles of metal wires wound along the circumferential direction in series.
6. An easy-to-assemble bearingless servomotor according to claim 1, wherein: the perpendicular mapping pattern of the excitation coil on the plane of the encoder stator printed circuit board wraps the receive coil assembly inside.
7. An easy-to-assemble bearingless servomotor according to claim 1, wherein: the encoder rotor printed circuit board comprises a plurality of periodically repeated metal blades.
8. An easy-to-assemble bearingless servo motor according to claim 7, wherein: the vertical mapping pattern of the metal blades on the plane of the encoder stator printed circuit board overlaps the receive coil assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220356415.2U CN217769780U (en) | 2022-02-22 | 2022-02-22 | Bearing-free servo motor easy to assemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220356415.2U CN217769780U (en) | 2022-02-22 | 2022-02-22 | Bearing-free servo motor easy to assemble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217769780U true CN217769780U (en) | 2022-11-08 |
Family
ID=83869121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220356415.2U Active CN217769780U (en) | 2022-02-22 | 2022-02-22 | Bearing-free servo motor easy to assemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217769780U (en) |
-
2022
- 2022-02-22 CN CN202220356415.2U patent/CN217769780U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8179126B2 (en) | Hall rotary transformer and hall rotation angle encoder made of it | |
| EP3683464B1 (en) | Active magnetic bearing apparatus | |
| CN106312821B (en) | Integrated side exciting electromagnet sliding ring type automatic balancing arrangement | |
| US20210159748A1 (en) | Outer rotor direct drive motor with position encoder | |
| CN106644224B (en) | Magnetic suspension bearing dynamic torque sensor | |
| CN217769780U (en) | Bearing-free servo motor easy to assemble | |
| CN220170263U (en) | Split type inductance encoder | |
| CN219865905U (en) | Electric vortex sensor integrated structure of pure electromagnetic radial magnetic bearing | |
| US5394042A (en) | Angular position homopolar reluctance sensor | |
| CN110581634A (en) | Spiral permanent magnet electromagnetic actuator | |
| CN213402741U (en) | Outer rotor servo motor with encoder | |
| CN108199538B (en) | Servo hub motor | |
| CN114876955B (en) | Magnetic suspension bearing and compressor | |
| CN106803709B (en) | Permanent magnet synchronous motor and assembling method thereof | |
| CN115987030A (en) | Brushless motor and brushless motor rotor position detection method | |
| KR20190083812A (en) | A Ring Magnet Applied Type of a Rotor of a Motor for a Robot with a Eccentric Type of a Structure Having a Lower Cogging and a Lower Torque Ripple | |
| CN110071605B (en) | Motor mounting structure with electromagnetic induction type rotary transformer | |
| US4563905A (en) | Shaft torquemeter | |
| CN108649724B (en) | Voice coil motor module and swing control device | |
| CN202798174U (en) | Novel permanent magnet motor of discrete electromagnet stator structure | |
| CN219351458U (en) | Motor for electric spindle | |
| CN210655722U (en) | Motor rotor measuring device and elevator car driving device | |
| CN214101160U (en) | Closed-loop stepping motor | |
| CN221080994U (en) | Hollow motor stator and hollow motor | |
| CN112379117B (en) | Magnetoelectric rotation angular velocity and angular acceleration integrated sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |