CN106130223B - Shaft, the assembly method of shaft, motor - Google Patents
Shaft, the assembly method of shaft, motor Download PDFInfo
- Publication number
- CN106130223B CN106130223B CN201610641204.2A CN201610641204A CN106130223B CN 106130223 B CN106130223 B CN 106130223B CN 201610641204 A CN201610641204 A CN 201610641204A CN 106130223 B CN106130223 B CN 106130223B
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- shaft part
- shaft
- magnetic conduction
- linkage section
- face
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The present invention provides a kind of shafts, the assembly method of shaft, motor.Wherein, shaft includes axle sleeve；One end of first shaft part, the first shaft part is located in axle sleeve；One end of second shaft part, the second shaft part is located in axle sleeve, forms accommodating chamber between the inner wall of axle sleeve and the second shaft part, the first shaft part；Magnetic conduction shaft part is located in accommodating chamber；Wherein, the interconnecting piece for connecting with magnetic conduction shaft part is provided on the first shaft part and the end face of the second shaft part.Interconnecting piece is set on the end face of the first shaft part and the second shaft part respectively, effectively increases the reliability of shaft.The shaft uses three-stage connection type, has effectively blocked the axial magnetic circuit of shaft, has reduced axial leakage field.The shaft does not need the auxiliary installation of complicated assembly equipment tooling, effectively improves the assembly rate of the shaft.
Description
Technical field
The present invention relates to motor device technical fields, in particular to a kind of shaft, the assembly method of shaft, motor.
Background technique
High speed permanent magnet motor rotor structure in the prior art, using the annular magnetic steel of segmentation, rotor also uses segmented
Structure (referring to Fig. 1) is first bound up segmentation magnet steel 2 and the extremity piece at both ends 4,5 by the guide rod 3 of a TBE (threaded both ends)
(it is consistent to be worked into each component outer diameter), then completed by the assembly of 1 disposable thermal of sheath.Hot charging is relatively easy, but structure is slightly
Micro- complexity.
In addition, the high speed permanent magnet motor rotor structure that another kind in the prior art is common, rotor uses monolith ring
Shape magnet steel (surface-mount type magnet steel), rotor use a main shaft, protect magnet steel by sheath and transmit torque.Such high speed rotor knot
Structure is carried out every magnetic baffle every magnetic treatment although having used, its main shaft is generally permeability magnetic material, therefore the annular at rotor
Magnetic field caused by magnet steel can also form coupling circuit by main shaft and the bearing rotor of two sides, produce to the magnetic field of radial direction magnetic bearing
Raw interference, increases the control difficulty of two sides magnetic bearing.
Summary of the invention
The main purpose of the present invention is to provide a kind of shafts, the assembly method of shaft, motor, to solve in the prior art
The problem of rotor leakage.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of shaft, comprising: axle sleeve；First axle
Section, one end of the first shaft part is located in axle sleeve；One end of second shaft part, the second shaft part is located in axle sleeve, the inner wall of axle sleeve and
Accommodating chamber is formed between two shaft parts, the first shaft part；Magnetic conduction shaft part is located in accommodating chamber；Wherein, the first shaft part and the second shaft part
The interconnecting piece for connecting with magnetic conduction shaft part is provided on end face.
Further, interconnecting piece is the connection bump being set on the end face of the first shaft part.
Further, connection bump includes the first shaft part protrusion and the second shaft part protrusion, and the first shaft part protrusion is set to the
On one shaft part, compatible first recess portion with the first shaft part protrusion, the second shaft part protrusion are offered in the first end of magnetic conduction shaft part
It is set on the second shaft part, compatible second recess portion with the second shaft part protrusion is offered in the second end of magnetic conduction shaft part.
Further, the first shaft part protrusion includes: the first linkage section, the end face of one end of the first linkage section and the first shaft part
It is connected；Second linkage section, the second linkage section are connected with the second end of the first linkage section, the first linkage section and/or the second company
It connects and is provided with external screw thread on the outer peripheral surface of section.
Further, the first linkage section and the second linkage section are coaxially disposed.
Further, the outer diameter of the first linkage section is greater than the outer diameter of the second linkage section.
Further, step is provided in the first recess portion, the inner wall of the first recess portion is divided into screw thread hole section and positioning by step
The outer peripheral surface of hole section, the hole wall and connection bump that position hole section fits.
Further, toroidal cavity is formed between the end face and step of the first linkage section.
Further, there is distance between the end face of the second linkage section and the bottom of the first recess portion.
Further, shaft further include: magnet steel, magnet steel be arranged on magnetic conduction shaft part and be located at axle sleeve in, magnet steel and magnetic conduction
Shaft part radial through clearance fit.
Further, the radial clearance of magnet steel and magnetic conduction shaft part is L1, wherein 0.05mm≤L1≤0.1mm.
Further, the end face flush of magnet steel end face and magnetic conduction shaft part.
Further, the end face of the first shaft part and the second shaft part and magnetic conduction shaft part passes through clearance fit.
Further, the gap of the first end of the first shaft part and magnetic conduction shaft part is L2, wherein 0≤L2≤0.1mm, and/
Or, the gap of the second end of the second shaft part and magnetic conduction shaft part is L3, wherein 0≤L3≤0.1mm.
Further, the first shaft part is made with the second shaft part of non-magnet material.
According to another aspect of the present invention, a kind of motor, including shaft are provided, shaft is above-mentioned shaft.
According to another aspect of the present invention, a kind of assembly method of shaft is provided, assembly method is used to turn above-mentioned
Axis is assembled, and assembly method includes: to merge one end of magnetic conduction shaft part with the connection bump matching on the first shaft part to be assembled to
On first shaft part, magnetic steel sleeve is set on magnetic conduction shaft part, then magnetic conduction shaft part is assembled to by the connection bump on the second shaft part
To form rotating assembly on the other end；Axle sleeve is heated to be loaded into after preset temperature to the outer surface of rotating assembly；Turn
Shaft assembly magnetizes processing to rotating assembly, completes to assemble after preset time is cooling.
Further, axial pre tightening force is applied to the first shaft part and the second shaft part during cooling, until being cooled to
Remove axial pre tightening force after room temperature.
Further, preset temperature t, wherein 400 DEG C≤t≤500 DEG C.
Further, before magnetic steel sleeve is filled on magnetic conduction shaft part, on the inner wall of magnet steel and/or the outer peripheral surface of magnetic conduction shaft part
Coat magnet steel glue.
It applies the technical scheme of the present invention, shaft includes axle sleeve, the first shaft part, the second shaft part and magnetic conduction shaft part.First axle
One end of section is located in axle sleeve, and one end of the second shaft part is located in axle sleeve, between the inner wall of axle sleeve and the second shaft part, the first shaft part
Accommodating chamber is formed, magnetic conductive axis section is located in accommodating chamber.Wherein, be provided on the end face of the first shaft part and the second shaft part for
The interconnecting piece of magnetic conduction shaft part connection.Interconnecting piece is set on the end face of the first shaft part and the second shaft part respectively, is effectively increased
The reliability of shaft.The shaft uses three-stage connection type, has effectively blocked the axial magnetic circuit of shaft, has reduced axial
Leakage field.The shaft does not need the auxiliary installation of complicated assembly equipment tooling, effectively improves the assembly rate of the shaft.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of shaft in the prior art；
Fig. 2 shows the structural schematic diagrams of the embodiment of shaft according to the present invention；
Fig. 3 shows the structural schematic diagram of the embodiment one of connection bump in Fig. 2；And
Fig. 4 shows the structural schematic diagram of the embodiment two of connection bump in Fig. 2.
Wherein, the above drawings include the following reference numerals:
10, axle sleeve；20, the first shaft part；21, the first shaft part protrusion；30, the second shaft part；31, the second shaft part protrusion；40, it leads
Magnetic axis section；41, the first linkage section；42, the second linkage section；50, recess portion；51, step；52, the first recess portion；53, the second recess portion；
60, magnet steel.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Term be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary
Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein
Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown
The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand
The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them
It states.
As shown in Fig. 2, according to one embodiment of present invention, providing a kind of shaft.The shaft includes axle sleeve 10, first
Shaft part 20, the second shaft part 30 and magnetic conduction shaft part 40.One end of first shaft part 20 is located in axle sleeve 10, one end position of the second shaft part 30
In in axle sleeve 10, forming accommodating chamber between the inner wall of axle sleeve 10 and the second shaft part 30, the first shaft part 20, magnetic conduction shaft part 40, which is located at, to be held
It receives intracavitary.Wherein, the connection for connecting with magnetic conduction shaft part 40 is provided on the first shaft part 20 and the end face of the second shaft part 30
Portion.
In the present embodiment, interconnecting piece is set on the end face of the first shaft part 20 and the second shaft part 30 respectively, effectively increases
The reliability of shaft is added.The shaft uses three-stage connection type, has effectively blocked the axial magnetic circuit of shaft, has reduced axis
To leakage field.The shaft does not need the auxiliary installation of complicated assembly equipment tooling, effectively improves the assembly rate of the shaft.
Interconnecting piece is the connection bump being set on the end face of the first shaft part 20 and the second shaft part 30.The shaft part of both ends of the shaft
Between connect with magnetic conduction shaft part 40 by connection bump, the connection of the first shaft part 20 and magnetic conduction shaft part 40 can be effectively increased
Intensity.
Wherein, connection bump includes that the first shaft part protrusion 21 and the second shaft part protrusion 31, the first shaft part protrusion 21 are set to
On first shaft part 20, offered in the first end of magnetic conduction shaft part 40 with raised 21 compatible first recess portions 52 of the first shaft part, the
Two shaft part protrusions 31 are set on the second shaft part 30, are offered in the second end of magnetic conduction shaft part 40 suitable with raised 31 phases of the second shaft part
The second recess portion 53 matched.Setting can increase stability during high-speed rotation of shaft in this way.
First shaft part protrusion 21 includes the first linkage section 41 and the second linkage section 42.One end and first of first linkage section 41
The end face of shaft part 20 is connected.Second linkage section 42 is connected with the second end of the first linkage section 41, the first linkage section 41 or the
External screw thread such as (Fig. 3 and Fig. 4 shown in) are provided on the outer peripheral surface of two linkage sections 42.Certainly, guaranteeing the first shaft part 20, the second axis
It, can also be simultaneously in the first linkage section 41 and second in the case where bonding strength and stability between section 30 and magnetic conduction shaft part 40
External screw thread (not showing in figure) is arranged in the outer peripheral surface of linkage section 42.Setting can further increase the first shaft part 20, the in this way
Stability between two shaft parts 30 and magnetic conduction shaft part 40, the connection improved between the first shaft part 20 and magnetic conduction shaft part 40 are strong
Degree.
Preferably, in order to improve the stability of shaft, the first linkage section 41 and the second linkage section 42 are coaxially disposed.
Wherein, the outer diameter of the first linkage section 41 is greater than the outer diameter of the second linkage section 42.Setting can further function as in this way
Improve the reliability of shaft.
As shown in figure 3, be provided with step 51 in the first recess portion 52 and the second recess portion 53, step 51 is by the first recess portion 52 and
The inner wall of two recess portions 53 is divided into screw thread hole section and positioning hole section, positions the hole wall of hole section and the outer peripheral surface phase of corresponding connection bump
Fitting, can increase the reliability and bonding strength of shaft in this way.Wherein, positioning hole section plays the certralizing ability to shaft, this
The assembly precision that can be improved shaft is arranged in sample.Preferably, the cross section of hole section is positioned as circle, certainly, is guaranteeing shaft
Under the premise of assembly precision, the cross section for positioning hole section may be the structure of other shapes.Such as square structure.
It is formed between the end face and step 51 of each the first linkage section 41 shown in the A in toroidal cavity Fig. 3.It sets in this way
It sets so that connection bump is during precession, can guarantee that there is enough resignings between connection bump and the table top of step 51
Space is so that the end face of the first shaft part 20, the second shaft part 30 can fit (in Fig. 3 with the end face of magnet steel 60 and magnetic conduction shaft part 40
B shown in).Setting can increase the reliability of shaft in this way.
In order to guarantee that connection bump in whole precession recess portions 50 (including first recess portion 52, the second recess portion 53) and can make the
One shaft part 20, the second shaft part 30 end face can fit with the end face of magnet steel 60 and magnetic conduction shaft part 40, each second is connected
It connects and is provided with distance (shown in the C in Fig. 3) between the end face of section 42 and the bottom of recess portion 50, the range of the distance can be
0.5 to 1mm.
Shaft further includes magnet steel 60.Magnet steel 60 be arranged on magnetic conduction shaft part 40 and be located at axle sleeve 10 in, magnet steel 60 and magnetic conduction
Shaft part 40 radial through clearance fit.Magnet steel 60 is annular magnetic steel, diameter between annular magnetic steel and magnetic conduction core, that is, magnetic conduction shaft part 40
Clearance fit is combined into matching.Wherein, unilateral gap amount is L1,0.05mm≤L1≤0.1mm.
Preferably, in order to reduce the difficulty of processing of shaft, 60 end face of magnet steel and the end face of magnetic conduction shaft part 40 are arranged to phase
Concordantly.
For guarantee magnetic conduction core be axially bonded, compress between the first shaft part 20, the second shaft part 30, need to make annular magnetic steel with
First shaft part 20, the axially contact of the second shaft part 30 are gap-contact, and gap size control is advisable in 0-0.1mm.That is first axle
The end face of section 20 and the second shaft part 30 and magnetic conduction shaft part 40 passes through clearance fit.Specifically, the first shaft part 20 and magnetic conduction shaft part 40
First end gap be L2, wherein 0≤L2≤0.1mm, the second shaft part 30 and the gap of the second end of magnetic conduction shaft part 40 are
L3, wherein 0≤L3≤0.1mm.
Preferably, the first shaft part 20 is made with the second shaft part 30 of non-magnet material.First shaft part 20 and the second shaft part 30
When high speed rotation, due to the protective effect of axle sleeve 10, p-m rotor i.e. shaft is safely operated.
Shaft in above-described embodiment can also be used in motor device technical field, i.e., according to another aspect of the present invention,
A kind of motor, including shaft are provided, shaft is the shaft in above-described embodiment.
In the present embodiment, the assembly method of the shaft are as follows: by the company on one end of magnetic conduction shaft part 40 and the first shaft part 20
It connects protrusion matching merging to be assembled on the first shaft part 20, magnet steel 60 is sheathed on magnetic conduction shaft part 40, then pass through the second shaft part 30
On connection bump be assembled on the other end of magnetic conduction shaft part 40 to form rotating assembly；After axle sleeve 10 is heated to preset temperature
It is loaded into the outer surface of rotating assembly；Rotating assembly magnetizes processing to rotating assembly after preset time is cooling, complete
At assembly.Wherein, axial pre tightening force is applied to the first shaft part 20 and the second shaft part 30 during cooling, until being cooled to often
Remove axial pre tightening force after temperature.Preset temperature is t, wherein 400 DEG C≤t≤500 DEG C.60 sets of magnet steel are filled in magnetic conductive axis section 40
Before, magnet steel glue is coated on the outer peripheral surface of the inner wall of magnet steel 60 and magnetic conduction shaft part 40.Can certainly only one of wherein on
Coat magnet steel glue.Second shaft part 30 is in assembly, 30 axial compression of magnetic conduction core and the second shaft part, mainly by high-intensitive 10 mistake of axle sleeve
It is full of connection, the second shaft part 30 is connected.
Magnetic conduction core uses permeability magnetic material, and the section at the both ends of magnetic conduction core is respectively arranged with recess portion 50, and recess portion 50 includes screw thread
Hole and location hole, annular magnetic steel use NdFeB material.Due to the magnet steel of parallel magnetization, all magnetic lines of force are by the center of circle along one
Direction is parallel to each other, so, for the magnetic field sine for guaranteeing magnet steel generation, needing using parallel magnetization for the annular magnetic steel.Ring
Shape magnetic steel sleeve is on magnetic conduction core, and its left and right section and the end face of the left and right ends of magnetic conduction core are concordant.
The left part of first shaft part 20 has boss portion, and protrusion includes positioning cylinder and stud, is used for and magnetic conduction core left end
The screw hole in face connects cooperation with location hole.Similarly, for the right end of the second shaft part 30 again with boss portion, protrusion equally includes positioning
Cylinder and stud, for connecting cooperation with the screw hole of magnetic conduction core right side and location hole.
Sheath, that is, axle sleeve 10 uses nickel-base alloy, titanium alloy etc materials, sheath and the first shaft part 20, annular magnetic steel, second
Shaft part 30 is interference fit and is bonded with the right side of the first shaft part 20, is bonded with the left side of the second shaft part 30.If sheath
Using alloy materials such as nickel-base alloy, titanium alloys, assembled using interference hot charging or shrinkage.If sheath is nonmetallic using carbon fiber etc.
Material preferably uses shrinkage assembly or direct technology for binding.
When assembly, first magnetic conduction core is attached on the first shaft part 20, annular magnetic steel is attached on magnetic conduction core later can be in magnetic
Steel inner wall or magnetic conduction core periphery coat magnet steel glue, then the second shaft part 30 are attached on magnetic conduction core, the first shaft part 20, the second axis
Section 30 is all made of threaded connection, fastening with magnetic conduction core, is linked by the fastening of screw thread, improves the machinability of rotating assembly,
Then assembled rotating assembly fine cylindrical to specified size.
If sheath would be heated to the conjunction of certain temperature (400-500 DEG C) using alloy materials such as nickel-base alloy, titanium alloys again
For golden sheath disposable thermal mounted in the outer surface of the first shaft part 20, the second shaft part 30, annular magnetic steel, natural cooling is for a period of time, complete
It is assembled at shaft, finally does whole processing of magnetizing, complete high speed rotating shaft production.
According to nonmetallic materials such as carbon fibers, then needs to do cooling treatment to above-mentioned rotor assembly, is cooled to -200 DEG C,
Realize the shrinkage assembly of carbon fiber sheath.Carbon fiber technology for binding can also be directlyed adopt.
In the present embodiment, recess portion 50 is circular hole structure, can be realized the first shaft part 20, the second shaft part 30 in this way and leads
The radial positioning of magnetic core avoids the first shaft part 20, the second shaft part 30 and magnetic conduction core from occurring eccentric as far as possible.Toroidal cavity is axial
Avoid gap, after guaranteeing that screw thread screws, the contact of magnetic conduction core and magnet steel and shaft extremity piece (the first shaft part 20, the second shaft part 30)
Face is close to, presence very close to each other.If there is the presence in gap herein, the reduction of shaft stiffness will lead to, while revolving in shaft high speed
When forwarding raw accident collision, the abnormal problems such as shaft bending can be caused easily, reduce shaft reliability and service life.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of shaft characterized by comprising
Axle sleeve (10)；
First shaft part (20), one end of first shaft part (20) are located in the axle sleeve (10)；
Second shaft part (30), one end of second shaft part (30) are located in the axle sleeve (10), the inner wall of the axle sleeve (10)
Accommodating chamber is formed between second shaft part (30), first shaft part (20)；
Magnetic conduction shaft part (40) is located in the accommodating chamber；
Wherein, be provided on the end face of first shaft part (20) and second shaft part (30) for the magnetic conduction shaft part
(40) interconnecting piece connected；
The interconnecting piece is the connection bump being set on the end face of first shaft part (20), and the connection bump includes first
Shaft part protrusion (21) and the second shaft part are raised (31), and first shaft part raised (21) is set on first shaft part (20),
Compatible first recess portion (52), institute with first shaft part raised (21) are offered in the first end of the magnetic conduction shaft part (40)
The second shaft part raised (31) is stated to be set on second shaft part (30), offered in the second end of the magnetic conduction shaft part (40) with
Compatible second recess portion (53) of second shaft part raised (31), first shaft part raised (21) includes: the first linkage section
(41), one end of first linkage section (41) is connected with the end face of first shaft part (20)；Second linkage section (42), institute
It states the second linkage section (42) to be connected with the second end of first linkage section (41), first linkage section (41) and/or institute
It states and is provided with external screw thread on the outer peripheral surface of the second linkage section (42), be provided with step (51) in first recess portion (52), it is described
The inner wall of first recess portion (52) is divided into screw thread hole section and positioning hole section, the hole wall of the positioning hole section and institute by step (51)
The outer peripheral surface for stating connection bump fits；First linkage section (41) and second linkage section (42) are coaxially disposed.
2. shaft according to claim 1, which is characterized in that the outer diameter of first linkage section (41) is greater than described second
The outer diameter of linkage section (42).
3. shaft according to claim 1, which is characterized in that the end face of first linkage section (41) and the step
(51) toroidal cavity is formed between.
4. shaft according to claim 1, which is characterized in that the end face of second linkage section (42) and described first recessed
There is distance between the bottom in portion (52).
5. shaft according to claim 1, which is characterized in that the shaft further include:
Magnet steel (60), the magnet steel (60) be arranged on the magnetic conduction shaft part (40) and be located at the axle sleeve (10) in, the magnetic
Steel (60) is with the magnetic conduction shaft part (40) radial through clearance fit.
6. shaft according to claim 5, which is characterized in that the radial direction of the magnet steel (60) and the magnetic conduction shaft part (40)
Gap is L1, wherein 0.05mm≤L1≤0.1mm.
7. shaft according to claim 5, which is characterized in that magnet steel (60) end face and the magnetic conduction shaft part (40)
End face flush.
8. shaft according to claim 1, which is characterized in that first shaft part (20) and second shaft part (30) with
The end face of the magnetic conduction shaft part (40) passes through clearance fit.
9. shaft according to claim 8, which is characterized in that first shaft part (20) and the magnetic conduction shaft part (40)
The gap of first end is L2, wherein 0≤L2≤0.1mm, and/or, second shaft part (30) and the magnetic conduction shaft part (40)
The gap of second end is L3, wherein 0≤L3≤0.1mm.
10. shaft according to claim 1, which is characterized in that first shaft part (20) and second shaft part (30)
It is made of non-magnet material.
11. a kind of motor, including shaft, which is characterized in that the shaft is to turn described in any one of claims 1 to 10
Axis.
12. a kind of assembly method of shaft, the assembly method for the shaft described in any one of claims 1 to 10 into
Luggage is matched, which is characterized in that the assembly method includes:
Described in one end of the magnetic conduction shaft part (40) with the connection bump matching on first shaft part (20) is merged and is assembled to
On first shaft part (20), magnet steel (60) is sheathed on the magnetic conduction shaft part (40), then by second shaft part (30)
The connection bump is assembled on the other end of the magnetic conduction shaft part (40) to form rotating assembly；
The axle sleeve (10) is heated to be loaded into after preset temperature to the outer surface of the rotating assembly；
The rotating assembly magnetizes processing to the rotating assembly, completes to assemble after preset time is cooling.
13. assembly method according to claim 12, which is characterized in that first shaft part during cooling
(20) and second shaft part (30) applies axial pre tightening force, until removing axial pre tightening force after being cooled to room temperature.
14. assembly method according to claim 12, which is characterized in that the preset temperature is t, wherein 400 DEG C≤t
≤500℃。
15. assembly method according to claim 12, which is characterized in that magnet steel (60) set is filled to the magnetic conduction shaft part
(40) before on, magnet steel glue is coated on the inner wall of the magnet steel (60) and/or the outer peripheral surface of the magnetic conduction shaft part (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641204.2A CN106130223B (en) | 2016-08-04 | 2016-08-04 | Shaft, the assembly method of shaft, motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610641204.2A CN106130223B (en) | 2016-08-04 | 2016-08-04 | Shaft, the assembly method of shaft, motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106130223A CN106130223A (en) | 2016-11-16 |
| CN106130223B true CN106130223B (en) | 2018-12-07 |
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| CN201610641204.2A Active CN106130223B (en) | 2016-08-04 | 2016-08-04 | Shaft, the assembly method of shaft, motor |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107465286B (en) * | 2017-08-16 | 2020-03-17 | 贵州航天林泉电机有限公司 | Permanent magnet rotor structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983679A (en) * | 2012-11-28 | 2013-03-20 | 沈阳工业大学 | In-slot self-cooling high-speed permanent magnetic motor system for compressor |
| CN103580383A (en) * | 2013-11-18 | 2014-02-12 | 沈阳工业大学 | Air-water-hybrid cooled high-speed permanent magnet motor with rotor under hybrid protection |
| CN104518587A (en) * | 2013-09-26 | 2015-04-15 | Skf磁性机械技术公司 | Permanent magnet rotor shaft assembly and method for manufacturing the same |
| CN104779722A (en) * | 2015-04-28 | 2015-07-15 | 哈尔滨工业大学 | Rotor structure of high-speed permanent magnet motor |
| CN205945287U (en) * | 2016-08-04 | 2017-02-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Pivot and have its motor |
-
2016
- 2016-08-04 CN CN201610641204.2A patent/CN106130223B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983679A (en) * | 2012-11-28 | 2013-03-20 | 沈阳工业大学 | In-slot self-cooling high-speed permanent magnetic motor system for compressor |
| CN104518587A (en) * | 2013-09-26 | 2015-04-15 | Skf磁性机械技术公司 | Permanent magnet rotor shaft assembly and method for manufacturing the same |
| CN103580383A (en) * | 2013-11-18 | 2014-02-12 | 沈阳工业大学 | Air-water-hybrid cooled high-speed permanent magnet motor with rotor under hybrid protection |
| CN104779722A (en) * | 2015-04-28 | 2015-07-15 | 哈尔滨工业大学 | Rotor structure of high-speed permanent magnet motor |
| CN205945287U (en) * | 2016-08-04 | 2017-02-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Pivot and have its motor |
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| Publication number | Publication date |
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| CN106130223A (en) | 2016-11-16 |
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