CN208874436U - A kind of electromechanical servo system - Google Patents
A kind of electromechanical servo system Download PDFInfo
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- CN208874436U CN208874436U CN201821868465.9U CN201821868465U CN208874436U CN 208874436 U CN208874436 U CN 208874436U CN 201821868465 U CN201821868465 U CN 201821868465U CN 208874436 U CN208874436 U CN 208874436U
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Abstract
The utility model discloses a kind of electromechanical servo systems, including motor stator, rotor and servo controller；It further include servo-system shell, stator is fixedly connected with the inner wall of servo-system shell, and rotor includes magnetic assembly and nut screw component, and magnetic assembly is fixedly connected with the nut periphery of nut screw component, and the lead screw of nut screw component axially connects motor output shaft；Servo controller is set in servo-system shell.Activation part, that is, servo control division equipments of motor are monolithically integrated in servo-system shell, motor output shaft is coaxially connected with lead screw shaft, directly driven by the electromagnetic connection between stator and rotor, straight-line displacement is exported by the conversion of nut screw, realize the highly integrated of motor activation part and transmission, eliminate other transmission mechanisms in being typically designed, servo controller is integrated in shell, make full use of interior space, reduce connecting cable, with the integrated level and specific power of this lifting system, electromechanical servo system adaptability is promoted.
Description
Technical field
The utility model relates to field of electromechanical technology, more specifically to a kind of electromechanical servo system.
Background technique
Traditional electromechanical servo system is mainly by independent servo drive controller, electromechanical actuator and connecting cable group
At.Electromechanical servo drive control device receives the instruction of host computer, is resolved by SERVO CONTROL, finally amplifies and be transformed to electricity
The electrical power output of pressure, electric current characterization, the positive and negative rotation direction of direct controlling and driving servo motor, rotation speed and torque are big
Small, slowing down to convert through precision drive mechanism is in line or rotates output.Meanwhile acquiring target position letter in real time by sensor
Breath feeds back to drive control device, forms closed-loop control, realizes the pitching, yaw and rolling appearance of the objective bodies such as control rudder face, jet pipe
State control.
Traditional electromechanical servo system is mainly made of three big module, that is, electromechanical actuators, drive control device and cable, respectively
Module is independent, is unfavorable for system lightweight and miniaturization, there are structure adaptabilities it is poor, specific power is low the problems such as, it is difficult to adapt to newly
Generation high-performance, the weaponrys such as strong mobile missile and high-end intelligence equipment need the application of high-specific-power electromechanical servo system
It asks.Specific power is the ratio or system output power and volume ratio of system output power and weight, the bigger system relative weight of ratio
Lighter or volume is smaller.
In conclusion how to efficiently solve, structure adaptability existing for the design of current electromechanical servo system is poor, compares function
The low technical problem of rate is current those skilled in the art's urgent problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of electromechanical servo system, the knot of the electromechanical servo system
Structure design can efficiently solve the technologies such as structure adaptability existing for the design of current electromechanical servo system is poor, specific power is low and ask
Topic.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of electromechanical servo system, including motor stator, rotor and servo controller；The electromechanical servo system is also
Including servo-system shell, motor stator is fixedly connected with the inner wall of the servo-system shell, and the rotor includes magnetic
Component and nut screw component, the magnetic assembly are fixedly connected with the nut periphery of nut screw component, the nut screw group
The lead screw of part axially connects motor output shaft；The servo controller is set in the servo-system shell.
Preferably, in above-mentioned electromechanical servo system, the nut screw component includes being uniformly distributed in the lead screw and spiral shell
The periphery of more planetary rollers between mother, the planetary roller is threadedly engaged between the nut and lead screw simultaneously, is conducted
The rotary motion of nut.
Preferably, it in above-mentioned electromechanical servo system, is provided in the servo-system shell and is separated along its length
Connecting cover plate, the side of the connecting cover plate is provided with the motor stator and rotor, the setting of the connecting cover plate other side
There is servo controller.
Preferably, in above-mentioned electromechanical servo system, the servo controller includes encoder and circuit board member, the electricity
Machine rotor further includes the threaded rod for being mounted on the nut tail portion, and the connection cover is stretched out in described threaded rod one end
Plate, the encoder and threaded rod installation are fixed, and are used for and the nut synchronous rotary.
Preferably, in above-mentioned electromechanical servo system, the circuit board member includes drive circuit board and control circuit board, institute
It states drive circuit board and is annularly bonded the connecting cover plate installation fixation, the control circuit board is mounted on servo-system shell
The bottom surface opposite with the connecting cover plate in vivo.
Preferably, in above-mentioned electromechanical servo system, the encoder is specially multi-turn absolute type encoder.
Preferably, in above-mentioned electromechanical servo system, linear displacement transducer is provided in the motor output shaft.
Preferably, in above-mentioned electromechanical servo system, one end that the servo-system shell stretches out motor output shaft is provided with
Electric motor end cap, the central area of the electric motor end cap are provided with limit shaft sleeve, and the motor output shaft is in prism-shaped, the limit
Axle sleeve is provided with the limit square hole with motor output shaft outer peripheral surface male-female engagement.
Preferably, in above-mentioned electromechanical servo system, the lateral surface of the servo-system shell is respectively arranged with first and is electrically connected
Device and the second electric connector are connect, for being connect with internal servo controller, first electric connector and the second electric connector
It is located at the two sides of the connecting cover plate.
Preferably, in above-mentioned electromechanical servo system, bearing group is provided between the threaded rod and the connecting cover plate
Part is also equipped with bearing assembly between the nut and the inner sidewall of the servo-system shell.
Electromechanical servo system provided by the utility model, including motor stator, rotor and servo controller；The machine
Electric servo system further includes servo-system shell, and motor stator is fixedly connected with the inner wall of the servo-system shell, the electricity
Machine rotor includes magnetic assembly and nut screw component, and the magnetic assembly is fixedly connected with the nut periphery of nut screw component, institute
The lead screw for stating nut screw component axially connects motor output shaft；The servo controller is set to the servo-system shell
It is interior.This electromechanical servo system provided by the utility model uses the design of integrated form, by activation part, that is, servo control of motor
Component processed is monolithically integrated in servo-system shell, motor stator is directly fixed with system casing inner wall, rotor is direct
It is affixed and motor output shaft is directly coaxially connected with lead screw shaft with the nut of the nut screw component for being displaced output, directly
The electromagnetic connection driving between stator and rotor was connected, straight-line displacement is exported by the conversion of nut screw, realizes motor work
Dynamic component and transmission it is highly integrated, eliminate other transmission mechanisms being typically designed between middle servo motor and cylinder body, and fit
It answers activation part and shell itself to design servo controller is also integrally disposed in system casing, takes full advantage of in shell
Space reduces connecting cable, with the integrated level and specific power of this lifting system, system is enabled to have different usage scenarios
Stronger adaptability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the side the schematic diagram of the section structure of electromechanical servo system provided by the embodiment of the utility model；
Fig. 2 is the cross-section structure signal of the nut screw component of electromechanical servo system provided by the embodiment of the utility model
Figure；
Fig. 3 is the external overall structure diagram of electromechanical servo system provided by the embodiment of the utility model.
It is marked in attached drawing as follows:
Electric machine casing 1, rear cover 2, connecting cover plate 3, electric motor end cap 4, electrical connection pedestal 5, limit shaft sleeve 6, rod end bearing 7,
Servo-system shell 8, motor stator 10, nut screw component 11, lead screw spring bearing 12, encoder 13, the second electric connector
14, the first electric connector 15, bearing lock nut 16, locking nut 17, deep groove ball bearing 18, oscillating bearing 19, straight-line displacement
Sensor 20, control circuit board 21, drive circuit board 22, threaded collar 23, annular block plate 24, retainer 25, planetary roller 26,
Axle sleeve 27, motor output shaft 28, nut 29, threaded rod 30.
Specific embodiment
The utility model embodiment discloses a kind of electromechanical servo system, is deposited with solving the design of current electromechanical servo system
Structure adaptability difference specific power it is low equal the technical issues of.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-Fig. 3 is please referred to, Fig. 1 is that the side cross-section structure of electromechanical servo system provided by the embodiment of the utility model is illustrated
Figure；Fig. 2 is the schematic diagram of the section structure of the nut screw component of electromechanical servo system provided by the embodiment of the utility model；Fig. 3
For the external overall structure diagram of electromechanical servo system provided by the embodiment of the utility model.
Electromechanical servo system provided by the utility model, including motor stator 10, rotor and servo controller；It is electromechanical
Servo-system further includes servo-system shell 8, and motor stator 10 is fixedly connected with the inner wall of servo-system shell 8, rotor
Including magnetic assembly and nut screw component 11, magnetic assembly is fixedly connected with 29 periphery of nut of nut screw component 11, nut silk
The lead screw of thick stick component 11 axially connects motor output shaft 28；Servo controller is set in servo-system shell 8.
This electromechanical servo system provided by the utility model uses the design of integrated form, and the activation part of motor is watched
It takes control assembly to be monolithically integrated in servo-system shell 8, motor stator 10 is directly fixed with system casing inner wall, motor turns
Son is directly affixed with the nut 29 for be displaced the nut screw component 11 exported, and directly and lead screw shaft by motor output shaft 28
It is coaxially connected, directly by the electromagnetic connection driving between stator and rotor, straight-line displacement is exported by the conversion of nut screw, is filled
Divide and directly integrally fixed the magnetic assembly in nut 29 and rotor using the structure of long nut in the design of nut screw component 11, i.e.,
Magnetic steel of motor is connected firmly by viscose glue and motor magnetic yoke, and the outer hot charging stainless steel sleeve of magnet steel, motor magnetic yoke and nut 29 are interference fitted simultaneously
Viscose glue, stainless steel sleeve, magnet steel, magnetic yoke, nut 29 form the rotor assembly of motor.Preferred stator design is on this basis
Motor stator 10 and servo-system shell 8 are fixed using interference fit and with pin.
The highly integrated of motor activation part and transmission is realized by designing above, eliminates and is typically designed middle servo electricity
Other transmission mechanisms between machine and cylinder body, and adapt to activation part and shell itself design by servo controller also integrate set
It is placed in system casing, takes full advantage of space in shell, reduce connecting cable, with the integrated level of this lifting system and ratio
Power enables system have stronger adaptability to different usage scenarios.
For the power conduction and movement conduction characteristic for promoting nut screw component 11 in above-described embodiment, enable component can be more
Stablize conduction, and be capable of providing bigger load supporting capacity: nut screw component 11 includes being uniformly distributed in lead screw and nut
Between more planetary rollers 26, the periphery of planetary roller 26 is threadedly engaged between nut and lead screw simultaneously, conducts nut
Rotary motion.
In technical solution provided in this embodiment, is designed using inverse type planetary roller screw, pass through retainer 25
By multiple (usual 4 groups or 6 groups) planetary rollers 26 it is axial it is parallel be threadedly connected between lead screw shaft and nut, with rotor one
The rotation of nut lead screw shaft is transferred to by the rotation of each roller, realize the conduction by rotating to linear motion.
Wherein cooperate in the design nut screw component 11 and is additionally provided with a series of relevant connections or supporting member, including
Threaded collar 23 between 30 end of screw rod shaft end and threaded rod, the extreme position that limit lead screw axis inwardly stretches back,
The fixed position of the annular block plate 24 that threaded collar 23 is arranged between nut, between planet stud front end and motor output shaft 28
It is provided with the structure of axle sleeve 27.
It is provided for the combination fit system in the above-mentioned electromechanical servo system of optimization between activation part and servopackage following
Design: the connecting cover plate 3 separated along its length is provided in servo-system shell 8, the side of connecting cover plate 3 is provided with
Motor stator 10 and rotor, 3 other side of connecting cover plate are provided with servo controller.
Wherein edge in servo-system shell 8 is moved and is axially separated into two parts by connecting cover plate 3, and leading portion is for accommodating rotor
The motors activation part such as stator, back segment mainly accommodate SERVO CONTROL relevant design, make full use of the intracorporal integrated space of shell.
Servo controller includes encoder 13 and circuit board member, and rotor further includes being mounted on nut tail portion
Connecting cover plate 3 is stretched out in threaded rod 30,30 one end of threaded rod, and encoder 13 and the installation of threaded rod 30 are fixed, be used for and spiral shell
Female synchronous rotary, wherein encoder is preferably multi-turn absolute type encoder.
It using multi-turn absolute type encoder, is connected firmly with machine shaft, the spiral shell for the rotation that is fixed as one with nut is specially set
Line connecting rod 30, the other end and encoder 13 of threaded rod 30 are fixed, and encoder 13 is built in the rear piece housing of system.It utilizes
The advantage of planetary roller screw high-precision transmission, gives up the displacement sensor for being placed outside electromechanical integral outer, forms high-precision and closes
Ring control, improves the integrated level of system.
Circuit board member includes drive circuit board 22 and control circuit board 21, and drive circuit board 22 is annularly fitted and connected lid
The installation of plate 3 is fixed, and control circuit board 21 is mounted on bottom surface opposite with connecting cover plate 3 in servo-system shell 8；Motor is defeated
Linear displacement transducer 20 is provided in shaft 28.
Technical solution provided in this embodiment has advanced optimized the Integrated design of servo structure, wherein in servo-system shell
In the second half section shell space that body 8 is marked off by connecting cover plate 3, drive circuit board 22 is integrated in the tail portion of servo-system, if
Count into two layers of ring flat-plate, around absolute type encoder, make full use of space, reduce connecting cable, improve system specific power and can
By property.
And the linear displacement transducer 20 for being used to obtain motor straight-line displacement amount is further set to motor output shaft
In 28, avoid improving the integrated level of system using other more complicated external connection structures, wherein the sensor is located at electricity
Machine output shaft 28 and avoid the rotation due to lead screw shaft from may cause influence to design.
To be maintained at during motor linear movement output not by lead screw Effect of Rotation, servo-system shell 8 stretches out electricity
One end of machine output shaft is provided with electric motor end cap 4, and the central area of electric motor end cap 4 is provided with limit shaft sleeve 6, and motor output shaft is in
Prism-shaped, limit shaft sleeve 6 are provided with the limit square hole with motor output shaft outer peripheral surface male-female engagement.
Lead screw design is preferably prism-shaped such as tetragonal body structure, and 6 center of limit shaft sleeve setting inner hole is and motor output shaft
The polygonized structure matched, 6 outer ring of limit shaft sleeve preferably passes through holding screw and connect with electric motor end cap 4, thus limiting motor
The rotation of output shaft, 6 material of limit shaft sleeve is preferably tin bronze, there is self-lubricating.When servo motor drives planet nut
It when rotary motion, is restricted with the motor output shaft rotary freedom that lead screw is axially connect, therefore, output shaft can only be along axial direction
Do linear reciprocating motion.
The lateral surface of servo-system shell 8 is respectively arranged with the first electric connector 15 and the second electric connector 14, for
Internal servo controller connection, the first electric connector 15 and the second electric connector 14 are located at the two sides of connecting cover plate 3.Spiral shell
It is provided with bearing assembly between line connecting rod 30 and connecting cover plate 3, is also equipped between nut and the inner sidewall of servo-system shell 8
Bearing assembly.
Wherein the bearing assembly between threaded rod 30 and connecting cover plate 3 is preferably deep groove ball bearing 18, for providing diameter
To support；Nut and servo-system shell 8 use lead screw spring bearing 12, using normal angular contact bearings also can, side setting
It is formed limit by bearing lock nut 16 between nut.Furthermore servo-system shell 8 is preferably designed as passing through two parts
Docking combination is constituted, the rear cover 2 of electric machine casing 1 and rear end including front end, and the two is with the separation of connecting cover plate 3.To adapt to electricity
1 structure of casing body, 15 position of the first electric connector is preferably provided with the structure of electrical connection pedestal 5, to provide electric connector installation position
It sets.Further motor output shaft front end is also connected with rod end bearing 7, and the locking nut 17 for being connected with exporting axis,
The front end of rod end bearing 7 and the tail end metal plate position of servo-system shell 8 are provided with the oscillating bearing 19 for connection.
Electromechanical servo system is communicated by connector with host computer, is resolved by the controller of electromechanical servo system, driving
Device exports SVPWM and generates rotating excitation field to AC permanent magnet synchronous motor, forms magnetic field torque, drive motor rotor with rotor
Rotation, and then the nut connected firmly with rotor is driven to rotate, the rotation of nut drives lead screw shaft linear motion, to realize entire system
The linear motion of system exports.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of electromechanical servo system, including motor stator, rotor and servo controller；It is characterized in that, the electromechanics
Servo-system further includes servo-system shell, and motor stator is fixedly connected with the inner wall of the servo-system shell, the motor
Rotor includes magnetic assembly and nut screw component, and the magnetic assembly is fixedly connected with the nut periphery of nut screw component, described
The lead screw of nut screw component axially connects motor output shaft；The servo controller is set in the servo-system shell.
2. electromechanical servo system according to claim 1, which is characterized in that the nut screw component includes being uniformly distributed
The more planetary rollers between the lead screw and nut, the periphery of the planetary roller is simultaneously between the nut and lead screw
It is threadedly engaged, conducts the rotary motion of nut.
3. electromechanical servo system according to claim 1, which is characterized in that be provided in the servo-system shell along length
The connecting cover plate that degree direction is separated, the side of the connecting cover plate are provided with the motor stator and rotor, connect
The cover board other side is provided with servo controller.
4. electromechanical servo system according to claim 3, which is characterized in that the servo controller includes encoder and electricity
Road board member, the rotor further include the threaded rod for being mounted on the nut tail portion, described threaded rod one end
The connecting cover plate is stretched out, the encoder and threaded rod installation are fixed, be used for and the nut synchronous rotary.
5. electromechanical servo system according to claim 4, which is characterized in that the circuit board member includes drive circuit board
And control circuit board, the drive circuit board are annularly bonded the connecting cover plate installation and fix, the control circuit board installation
It is fixed on bottom surface opposite with the connecting cover plate in servo-system shell.
6. electromechanical servo system according to claim 4, which is characterized in that the encoder is specially that multi-turn absolute type is compiled
Code device.
7. according to the described in any item electromechanical servo systems of claim 4 to 6, which is characterized in that set in the motor output shaft
It is equipped with linear displacement transducer.
8. electromechanical servo system according to claim 7, which is characterized in that the servo-system shell stretches out motor output
One end of axis is provided with electric motor end cap, and the central area of the electric motor end cap is provided with limit shaft sleeve, and the motor output shaft is in
Prism-shaped, the limit shaft sleeve are provided with the limit square hole with motor output shaft outer peripheral surface male-female engagement.
9. electromechanical servo system according to claim 7, which is characterized in that the lateral surface of the servo-system shell is distinguished
It is provided with the first electric connector and the second electric connector, for being connect with internal servo controller, first electric connector
And second electric connector be located at the two sides of the connecting cover plate.
10. electromechanical servo system according to claim 7, which is characterized in that the threaded rod and the connecting cover plate
Between be provided with bearing assembly, be also equipped with bearing assembly between the nut and the inner sidewall of the servo-system shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821868465.9U CN208874436U (en) | 2018-11-13 | 2018-11-13 | A kind of electromechanical servo system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821868465.9U CN208874436U (en) | 2018-11-13 | 2018-11-13 | A kind of electromechanical servo system |
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| CN208874436U true CN208874436U (en) | 2019-05-17 |
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| CN201821868465.9U Active CN208874436U (en) | 2018-11-13 | 2018-11-13 | A kind of electromechanical servo system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217574A (en) * | 2018-11-13 | 2019-01-15 | 四川航天烽火伺服控制技术有限公司 | A kind of electromechanical servo system |
-
2018
- 2018-11-13 CN CN201821868465.9U patent/CN208874436U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217574A (en) * | 2018-11-13 | 2019-01-15 | 四川航天烽火伺服控制技术有限公司 | A kind of electromechanical servo system |
| CN109217574B (en) * | 2018-11-13 | 2024-05-17 | 四川航天烽火伺服控制技术有限公司 | Electromechanical servo system |
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