CN109728701A - A kind of entirety encapsulating high overload permanent magnet synchronous servo motor - Google Patents
A kind of entirety encapsulating high overload permanent magnet synchronous servo motor Download PDFInfo
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- CN109728701A CN109728701A CN201711020042.1A CN201711020042A CN109728701A CN 109728701 A CN109728701 A CN 109728701A CN 201711020042 A CN201711020042 A CN 201711020042A CN 109728701 A CN109728701 A CN 109728701A
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Abstract
The invention belongs to aerospace servo motor technical fields, and in particular to a kind of entirety encapsulating high overload permanent magnet synchronous servo motor.Whole encapsulating high overload permanent magnet synchronous servo motor of the invention includes stator, rotor, power supply base, rotation becomes socket and rotation becomes, stator and rotor constitute electromagnetic component, rotation becomes rotor-position detection part, power supply base is stator and external power supply electric energy transmission part, and rotation becomes socket and becomes detection rotor position information transmission part into rotation.The present invention solves existing servo motor and is difficult to the technical issues of meeting high overload technical requirements, can be adapted for high temperature, high overload working environment, by motor work in temperature rise highest portion position winding temperature sharp fall, ensure motor stabilizing it is long when work.
Description
Technical field
The invention belongs to aerospace servo motor technical fields, and in particular to a kind of entirety encapsulating high overload permanent-magnet synchronous
Servo motor.
Background technique
Currently, the servo-systems motor such as Aeronautics and Astronautics field, relative to system other functional components, use environment
It is the most severe.Motor keeps motor internal temperature rise higher as power part, cooling measure performance difficulty, and self-heating.Servo
Motor temperature, which is more than 180 DEG C, will appear new technical problem, and conventional motor insulating materials and insulating treatment process will be unable to meet
It is required that.
Continuous improvement with Aeronautics and Astronautics field to servo motor requirement, such as reinforcement, the work of overload capacity
The increase of duration and the variation of environment temperature, it is desirable that steady operation when servo motor can be long under varying temperature environment.Traditional electricity
Machine structure is not suitable for high overload requirement, how to improve motor overload ability, and control temperature rise, is that servo motor technical field needs
The technical issues of wanting emphasis to tackle key problems.
Summary of the invention
The technical problem to be solved in the invention are as follows: existing servo motor is difficult to meet high overload technical requirements.
It is described that technical scheme is as follows:
A kind of entirety encapsulating high overload permanent magnet synchronous servo motor, including stator, rotor, power supply base, rotation become socket and
Rotation becomes, and stator and rotor constitute electromagnetic component, and rotation becomes rotor-position detection part, and power supply base is stator and external power supply electricity
Energy transmission part, rotation become socket and detect rotor position information transmission part into rotation change:
There are gaps, i.e. air gap between stator and rotor；Stator connection end cap component；Connect respectively with stator and end-cap assembly
Connect terminal box；Power supply base is mounted in wiring wire box, and is welded by the high temperature resistant wire on socket contact pin with stator winding
Together, the input or output of foreign current are realized；Rotation becomes tight fit and is sleeved on armature spindle, and rotation transformation lid compresses rotation and becomes；
Motor is by drive control device for electric drive, and rotor is made of permanent-magnet material and permeability magnetic material, between stator
Generate air-gap field, when by cable through power supply base, to motor stator winding, for three-phase alternating current when, stator rotating excitation field
The air-gap field generated with rotor permanent magnet interacts and generates torque, drives rotor rotation, and export machinery by armature spindle
Can, realize conversion of the electric energy to mechanical energy.
As a preferred solution: stator includes stator core, stator winding, casting glue, stator case and holding screw；Stator
After iron core, stator winding and holding screw dipping lacquer, assembled by hot charging and stator case；By stator module and determined with holding screw
Sub- shell fastening, stator case are connected by screw to end-cap assembly；Stator core, stator winding, holding screw and stator case
After body assembles, then using casting glue progress overall vacuum encapsulating.Scheme as a further preference: stator core is by silicon steel
Piece laminates what integrated molding obtained, stacking factor >=0.95；Stator winding uses C grades of enameled wires of selection resistant to high temperature；Casting glue
Select JF-1853 high thermal conductivity epoxy casting glue；The quantity of holding screw is 2.
As a preferred solution: rotor includes armature spindle, magnetic yoke, magnet steel, stainless steel sleeve, balance ring, bearing I and bearing II.
Magnetic yoke, balance ring are attached on armature spindle by hot charging mode, and bonding magnetic steel is matched in yoke surfaces, stainless steel sleeve and magnet steel for gap
It closes, stainless steel sleeve both ends and rotor axial end, balance ring are welded；Bearing I, bearing II are respectively by end-cap assembly and stator case branch
Support.Scheme as a further preference: stainless steel sleeve selects 0Cr18Ni9 material, and one-sided thickness range is 0.3mm~0.4mm,
Outer surface roughness is more than or equal to Ra1.6, is more than or equal to 7 grades with the concentricity of bearing I, II internal diameter mounting surface of bearing；Bearing I,
Bearing II uses 250 DEG C of heatproof of deep groove ball bearing.
The invention has the benefit that
(1) a kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention, can be adapted for high temperature, high overload work
Make environment, by motor work in temperature rise highest portion position winding temperature sharp fall, ensure motor stabilizing it is long when work；
(2) a kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention, using whole encapsulation technology, significantly
The high temperature resistance of stator is improved, to improve the high temperature resistance of motor, the volume of motor, again under identical power
Amount can be done smaller；
(3) a kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention, using whole encapsulating structure, structure
Simply, stator integraty is good.
Detailed description of the invention
Fig. 1 is whole encapsulating high overload permanent magnet synchronous servo motor axial section；
Fig. 2 is whole encapsulating high overload permanent magnet synchronous servo motor three-dimensional figure；
Fig. 3 is whole encapsulating high overload permanent magnet synchronous servo motor radial cutaway view；
Fig. 4 is stator shaft orientation sectional view of the invention；
Fig. 5 is rotor axial sectional view of the invention；
Fig. 6 is the A-A sectional view in Fig. 5.
In figure, 1-stator；2-rotors；3-end-cap assemblies；4-terminal boxes；5-rotations become socket；6-power supply bases；
7-rotations become；8-rotation transformation lids；1-1-stator core；1-2-stator winding；1-3-casting glue；1-4-stator case；1-
5-holding screws；2-1-armature spindle；2-2-magnetic yoke；2-3-magnet steel；2-4-stainless steel sleeve；2-5-balance ring；2-6-axis
Hold I；2-7-bearing II.
Specific embodiment
A kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention is carried out with reference to the accompanying drawings and examples
It is described in detail.
As shown in Figure 1, a kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention, including stator 1, rotor 2,
Power supply base 6, rotation become socket 5 and rotation becomes 7: stator 1 and rotor 2 constitute electromagnetic component, and rotation becomes 7 as 2 position detection component of rotor,
Power supply base 6 is stator 1 and external power supply electric energy transmission part, and rotation becomes socket 5 and becomes 7 detection 2 location information of rotor transmission into rotation
Component, remaining part main function are structural supports.
There are gaps, i.e. air gap between stator 1 and rotor 2；Stator 1 is connected by screw to end-cap assembly 3.With stator 1 and
End-cap assembly 3 is separately connected terminal box 4 by screw；Power supply base 6 is mounted in wiring wire box 4, and by socket contact pin
High temperature resistant wire weld together with stator winding 1-2, realize the input or output of foreign current；Rotation becomes 7 tight fits suit
On armature spindle 2-1, rotation transformation lid 14 compresses rotation and becomes 7, then is fastened by screw.Motor is powered by drive control device and is driven
Dynamic, rotor 2 is made of permanent-magnet material and permeability magnetic material, generates air-gap field between stator 1, when passing through cable through powering
Socket 6, to motor stator winding 1-2, for three-phase alternating current when, air gap magnetic that stator rotating excitation field and rotor permanent magnet generate
, interaction generates torque, drives rotor 2 to rotate, and by armature spindle 2-1 output mechanical energy, realize electric energy to mechanical energy
Conversion.
In the present embodiment, power supply base 6 uses aerospace high temperature-resistant socket, and matched plug jack form is hyperbolic
Upper thread spring hole, contact reliability is higher, and conducting wire is to crimp form with 6 connection type of power supply base.
As shown in figure 4, stator 1 includes stator core 1-1, stator winding 1-2, casting glue 1-3, stator case 1-4 and tight
Determine screw 1-5.After stator core 1-1, stator winding 1-2 and holding screw 1-5 dipping lacquer, passes through hot charging and stator case 1-4 is filled
Match；Stator module and stator case 1-4 are fastened with holding screw 1-5, stator case 1-4 and end-cap assembly 3 are connected by screw
It connects.
In the present embodiment, stator core 1-1 is integrally formed by silicon steel plate stacking, stacking factor >=0.95, silicon
There is preferable insulating properties between steel disc piece and piece, effectively reduce eddy current, reduce eddy-current loss.
In the present embodiment, stator winding 1-2 uses C grades of enameled wires of selection resistant to high temperature, and maximum operating temperature is up to 220 DEG C.
Stator winding 1-2 is embedded in stator core 1-1 slot, and the slot number of the present embodiment is 9, and stator winding number is 2.The quantity of slot
It can be designed according to motor electromagnetic and need to be adjusted；The number of windings can increase according to total demand.
In the present embodiment, casting glue 1-3 selects JF-1853 high thermal conductivity epoxy casting glue, it is by liquid epoxies, increases
First and second pairs of groups of the compositions such as the component A of tough resin pre-add high thermal conductivity filler composition and modified anhydride curing agent, promotor and auxiliary agent
Part system.After first and second components are sufficiently mixed uniformly by 2:1, it to be used for encapsulating.Design technology rotor and technique end cap are needed before encapsulating, this
It is to guarantee the good premise of stator encapsulating, process rotor and technique end cap will keep one with former rotor and former cover internal shape
It causes, such insulating cement can fill the gap between entire winding overhang and casing, end cap.It is should be noted when encapsulating by shell 1-4
Silicone grease agent is carefully smeared at the position that outer wall and seam allowance, stator core 1-1 inner wall etc. need to be protected, and prevents casting glue from leaving a trace, shadow
Ring appearance and use.Thermal coefficient average value is 0.83W/ (mK) after encapsulating adhesive curing, and heating conduction is good.
In the present embodiment, holding screw 1-5 selects 2, and the two differs shown in Fig. 3 180 °.
As shown in figure 5, rotor 2 includes armature spindle 2-1, magnetic yoke 2-2, magnet steel 2-3, stainless steel sleeve 2-4, balance ring 2-5, axis
Hold II 2-7 of I 2-6 and bearing.
In the present embodiment, rotor magnetic circuit structural uses surface-mount type structure, and magnet steel is bread shape, is located at the outer surface magnetic yoke 2-2.
Magnetic yoke 2-2, balance ring 2-5 are attached on armature spindle 2-1 by hot charging mode, it is necessary to which assembly in place, does not allow balance ring to interfere axis
It holds.8 magnet steel 2-3 are uniformly adhered to the surface magnetic yoke 2-2, the preferred NdFeB material of permanent magnet with adhesive resistant to high temperature.No
0Cr18Ni9 or other un-conducted magnetic materials, the optional 0.3mm~0.4mm of one-sided thickness range, with magnet steel 2- can be selected in the steel bushing 2-4 that becomes rusty
3 be clearance fit, prevents from damaging magnet steel when assembly, and stainless steel sleeve both ends and the end face armature spindle 2-1, balance ring 2-5 use laser
Welding.Stainless steel sleeve 2-4 outer surface roughness be not less than Ra1.6, with I 2-6 of bearing, II 2-7 internal diameter mounting surface of bearing it is coaxial
Degree is not less than 7 grades.I 2-6 of bearing, II 2-7 of bearing are supported by end-cap assembly 3 and stator case 1-4 respectively, using 250 DEG C of heatproof
Deep groove ball bearing, size can choose according to specific requirements.Dynamic balance checking before indentation bearing, degree of unbalancedness are not less than G1 grades.
Rotor 2 exceeds the speed limit 2min at 5000rpm, should not there is mechanical damage, and meets concentricity requirement.
A kind of whole encapsulating high overload permanent magnet synchronous servo motor of the invention includes the design of four aspects.
1) high overload designs
For the ability for improving motor overload, it is designed in terms of improving output torque and control operating temperature rise two.Electricity
Machine is calculated by Electromagnetic Simulation, in copper factor allowed band, improves output torque by the way of increasing umber of turn；Due to
Windings section is the highest position of motor temperature rise, and control motor temperature rise is mainly the temperature rise of control winding part.Motor is using whole
After encapsulating, it is more advantageous to and exports motor winding temperature.Heat can be effectively transmitted to shell by whole encapsulating structure,
The effect for playing rapid cooling avoids excessive heat from accumulating, improves overload capacity, extends motor operating time.
2) insulating Design
Stator insulation structure mainly includes stator module insulation system and stator encapsulating structure.Motor stator uses high temperature resistant
Material and technique, while stator cavity is potted.Stator insulation material should select C grades and the above heat-resisting material, rotor
Magnet steel selects Nd-Fe-B permanent magnet material resistant to high temperature.Compared with room temperature ordinary motor, this kind of structure further improves motor
Insulation performance.Whole encapsulating motor is compared with non-encapsulating, under same loading condition, runs more reliable.Motor load before and after encapsulating
Temperature highest position winding temperature has dropped 18.8 DEG C when operation.Wet-heat resisting salt spray resistance is played the role of in stator entirety encapsulating, and
Casting glue also acts physical insulation between winding and shell and acts on, and improves the insulating reliability of motor operation.
3) stator encapsulating structure designs
Motor is using whole encapsulating structure, i.e., after stator module and shell assembly, then entirety carries out vacuum encapsulation.To protect
Barrier encapsulating surface is fitted closely with end cap, can be played the role of effective, be needed design technology rotor and technique end cap, guarantee it
Structure is consistent with product rotor, end cover structure；And carrying out secondary operation design, i.e., there are surpluses after encapsulating, further according to stator figure
Paper size carries out secondary operation, guarantees that encapsulating surface is uniform, smooth, flawless.
4) electromagnetism and hot design of Simulation
It is designed by Electromagnetic Simulation, motor is carried out to improve current density design.It is limited to having been carried out before and after motor encapsulating
The hot simulation analysis of member, analysis is the result shows that temperature highest position winding temperature has dropped 18.8 when motor load operation before and after encapsulating
℃.And to temperature rise test has been carried out before and after the encapsulating of motor material object, test result shows that winding temperature has dropped 20 DEG C.Experimental data
It is almost the same with emulation data.
Its purposes, technical schemes and advantages is described in detail in above-mentioned specific embodiment.Described is only specific real
Example, is not intended to limit the scope of protection of the present invention, any modification for being made all within the spirits and principles of the present invention, equivalent
Replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of entirety encapsulating high overload permanent magnet synchronous servo motor, including stator (1), rotor (2), power supply base (6), rotation change
Socket (5) and rotation become (7), and stator (1) and rotor (2) constitute electromagnetic component, and rotation becomes (7) as rotor (2) position detection component, supplies
Electrical socket (6) is stator (1) and external power supply electric energy transmission part, and rotation change socket (5) becomes (7) into rotation and detects rotor (2) position
Information transmission part, it is characterised in that:
There are gaps, i.e. air gap between stator (1) and rotor (2)；Stator (1) connection end cap component (3)；With stator (1) and end
Cap assemblies (3) are separately connected terminal box (4)；Power supply base (6) is mounted on wiring wire box (4), and by socket contact pin
High temperature resistant wire welds together with stator winding (1-2), realizes the input or output of foreign current；Rotation becomes (7) close-fitting trap
On armature spindle (2-1), rotation transformation lid (14) compresses rotation and becomes (7)；
By drive control device for electric drive, rotor (2) is made of motor permanent-magnet material and permeability magnetic material, with stator (1) it
Between generate air-gap field, when by cable through power supply base (6), to motor stator winding (1-2), for three-phase alternating current when, it is fixed
The air-gap field that sub- rotating excitation field and rotor permanent magnet generate, interaction generate torque, drive rotor (2) rotation, and pass through
Armature spindle (2-1) output mechanical energy realizes conversion of the electric energy to mechanical energy.
2. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 1, it is characterised in that: stator
It (1) include stator core (1-1), stator winding (1-2), casting glue (1-3), stator case (1-4) and holding screw (1-5)；
After stator core (1-1), stator winding (1-2) and holding screw (1-5) dipping lacquer, assembled by hot charging and stator case (1-4)；
Stator module and stator case (1-4) are fastened with holding screw (1-5), stator case (1-4) and end-cap assembly (3) pass through spiral shell
Nail connection；After stator core (1-1), stator winding (1-2), holding screw (1-5) are assembled with stator case (1-4), then adopt
Overall vacuum encapsulating is carried out with casting glue (1-3).
3. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 2, it is characterised in that: stator iron
Core (1-1) is integrally formed by silicon steel plate stacking, stacking factor >=0.95.
4. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 2, it is characterised in that: stator around
Group (1-2) uses C grades of enameled wires of selection resistant to high temperature.
5. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 2, it is characterised in that: casting glue
(1-3) selects JF-1853 high thermal conductivity epoxy casting glue.
6. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 2, it is characterised in that: clamp screw
The quantity for following closely (1-5) is 2.
7. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 2, it is characterised in that: rotor
(2) include armature spindle (2-1), magnetic yoke (2-2), magnet steel (2-3), stainless steel sleeve (2-4), balance ring (2-5), bearing I (2-6) and
Bearing II (2-7).
8. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 7, it is characterised in that: magnetic yoke
(2-2), balance ring (2-5) are attached on armature spindle (2-1) by hot charging mode, and magnet steel (2-3) is adhered to the surface magnetic yoke (2-2),
Stainless steel sleeve (2-4) and magnet steel (2-3) are clearance fit, the stainless steel sleeve both ends (2-4) and the end face armature spindle (2-1), balance ring
(2-5) welding；Bearing I (2-6), bearing II (2-7) are supported by end-cap assembly (3) and stator case (1-4) respectively.
9. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 7, it is characterised in that: stainless steel
It covering (2-4) and selects 0Cr18Ni9 material, one-sided thickness range is 0.3mm~0.4mm, and outer surface roughness is more than or equal to Ra1.6,
It is more than or equal to 7 grades with the concentricity of bearing I (2-6), bearing II (2-7) internal diameter mounting surface.
10. a kind of whole encapsulating high overload permanent magnet synchronous servo motor according to claim 7, it is characterised in that: bearing I
(2-6), bearing II (2-7) use 250 DEG C of heatproof of deep groove ball bearing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711020042.1A CN109728701A (en) | 2017-10-27 | 2017-10-27 | A kind of entirety encapsulating high overload permanent magnet synchronous servo motor |
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| CN201711020042.1A CN109728701A (en) | 2017-10-27 | 2017-10-27 | A kind of entirety encapsulating high overload permanent magnet synchronous servo motor |
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| CN201711020042.1A Pending CN109728701A (en) | 2017-10-27 | 2017-10-27 | A kind of entirety encapsulating high overload permanent magnet synchronous servo motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112350467A (en) * | 2019-08-08 | 2021-02-09 | 永济中车电机电器修配有限公司 | Subway alternating-current traction motor stator and stator notch potting process |
| CN112532001A (en) * | 2020-10-29 | 2021-03-19 | 北京精密机电控制设备研究所 | Dual-stator dual-rotation small-size redundancy servo motor |
| CN114221478A (en) * | 2021-11-30 | 2022-03-22 | 上海航天控制技术研究所 | High-power high-voltage motor and wiring terminal thereof |
| CN114825691A (en) * | 2022-06-28 | 2022-07-29 | 江苏交科能源科技发展有限公司 | Integrated encapsulation driving motor stator, encapsulation forming device and encapsulation method thereof |
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| CN112350467A (en) * | 2019-08-08 | 2021-02-09 | 永济中车电机电器修配有限公司 | Subway alternating-current traction motor stator and stator notch potting process |
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