CN202475060U - Rotor of permanent magnet rotary motor - Google Patents
Rotor of permanent magnet rotary motor Download PDFInfo
- Publication number
- CN202475060U CN202475060U CN2012200342363U CN201220034236U CN202475060U CN 202475060 U CN202475060 U CN 202475060U CN 2012200342363 U CN2012200342363 U CN 2012200342363U CN 201220034236 U CN201220034236 U CN 201220034236U CN 202475060 U CN202475060 U CN 202475060U
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- China
- Prior art keywords
- rotor
- permanent magnet
- balance
- rotor core
- gimbal
- Prior art date
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- Expired - Lifetime
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model provides a rotor of a permanent magnet rotary motor. The rotor of the permanent magnet rotary motor does not follow operations of cutting and processing, but can properly adjust balance. The rotor (4) of the permanent magnet rotary motor comprises a rotor core (13) with a permanent magnet, at least an end portion disposed on the rotor core (13) in the axial direction and a balance ring (16) with a plurality of protrusions (20) which are capable of fixing balance blocks (21) used for adjusting balance in riveting connection mode. The balance can be adjusted at least by mounting the balance blocks (21) used for adjusting balance on the protrusions (20) or by cutting off the protrusions (20).
Description
Technical field
The utility model relates to the rotor of the permanent magnet type electric rotary machine that is included in the permanent magnet that has voids on the stator and relatively rotate.
Background technology
In the rotor of the rotor of this permanent magnet type electric rotary machine and other electric rotating machine, the influence because of the deviations such as tolerance of the heterogeneity of material and processing is bound to produce imbalance (non-equilibrium state of gig).This imbalance becomes load, becomes the centrifugal forces affect rotation towards the circumferencial direction of rotor when rotated, and therefore the rotary speed load according to rotor increases, and becomes the main cause of generation displacement radially.This displacement radially becomes and causes rotor and the rotating machinery vibrating reason as shaft vibration; Therefore carry out balance adjustment shown in rotating machinery, waiting according to JIS B0905 (balanced degree of rotating machinery-stiff rotor); Make the balanced degree grade that determines for according to the size of rotor and rotary body and purposes etc., become with rotary body quality and rotary speed, to the unbalance tolerance of calculating of revising face apart from addition.
As the rotor that carries out this balance adjustment; For example motion has a kind of motor and compressor; Have and range upon range of the rotor core of electromagnetic steel plate arranged, in rotor core along circumferencial direction and become permanent magnet that protruding polygon arranges and set balance adjustment hole (for example, referring to patent documentation 1) in the radial direction outside of the permanent magnet that is disposed at rotor core.
In addition, also motion has and a kind ofly is disposed at thickness, size, the sheet number of the end plate that is made up of magnetic material of rotor tip through change, adjusts the manufacturing approach (for example, referring to patent documentation 2) of motor of the maximum number of revolutions of motor.
And; Also motion has a kind of by having the motor that the rotor that is embedded in the magnet in the rotor core and stator constitute; The balance that employing makes the balance adjustment be integrally formed with balance weight portion and end plate portion is adjusted with balance weight integral type end plate; And the motor (for example, referring to patent documentation 3) of notch part is set with the end plate portion of balance weight integral type end plate in the balance adjustment.
And; Also motion has a kind of rotor of motor; The single end plate (end plate) that clamping is embedded with the laminate core of magnet has the Construction integration that is formed by resinous end ring and metal end ring; Resinous end ring and metal end ring have respectively chimeric stairstepping (for example, referring to patent documentation 4) each other in the part that is in contact with one another.
The prior art document
Patent documentation 1: TOHKEMY 2008-178233 communique
Patent documentation 2: issued patents WO02/019499 communique again
Patent documentation 3: TOHKEMY 2004-336925 communique
Patent documentation 4: TOHKEMY 2004-222348 communique
Summary of the invention
But, in patent documentation 1 described existing example,, therefore under the narrow situation in the interval of permanent magnet and rotor core external diameter, be difficult to balance to be set and adjust the hole in the desired position owing to need directly on rotor core, to be provided with balance adjustment hole.In addition, need to use instruments such as drill bit, excavate between the magnet insertion holes and range upon range of rotor core that powder etc. might get into rotor, aspect quality, go wrong.And even balance adjustment hole is set in the few zone of magnetic flux, the adjustment hole is that the space also can be to axial and radially in magnetic flux flows, produce bias, therefore has unsolved problems such as causing decrease in efficiency.
In addition; In above-mentioned patent documentation 2 described existing examples; Adjust the maximum number of revolutions of adjusting motor with the thickness of balance weight through changing balance, but the axially restrained end plate that balance is adjusted with balance weight, rotor core and permanent magnet is integrally formed by rivet pin.Therefore; Need before incorporate operation, carry out the balance adjustment, promptly determine the balance adjustment to adjust quantity with balance weight with the size and the balance of balance weight according to rivet pin; Under the situation that surpasses specified amount of unbalance after the riveted joint, be difficult to readjust and become below the amount of unbalance of appointment.In addition, the riveted joint pin-and-hole that rivet pin is passed through is compared with the situation of not riveting pin-and-hole, even in that the few position of the mobile influence of magnetic flux is provided with the riveted joint pin-and-hole, also have the so still unsolved problems such as influence of decrease in efficiency.
In addition; In patent documentation 3 described existing examples; Need carry out the balance adjustment before with the incorporate operation of balance weight through the fixing rotor of rivet, end plate, balance adjustment; Under the situation that surpasses the specified amount of unbalance in integrated back, be difficult to readjust below the amount of unbalance that becomes appointment.In addition, the rivet hole that on rotor core, rivet is passed through is compared with the situation that does not have rivet, even in the position that magnetic flux flows is not had influence rivet hole is set, also has the still unsolved problems such as influence of decrease in efficiency.
In addition; In patent documentation 4 described existing examples, through using resinous ring, and realize the lightweight of rotor; And carry out the balance adjustment through abrasive metal portion; But for the balance adjustment needs abrasive metal portion, abrasive flour might get in the range upon range of rotor core, exists in quality aspect so still unsolved problem that goes wrong.
Therefore; The still unsolved problem that the utility model is conceived to solve in the above-mentioned existing example makes; Its purpose is to provide a kind of cut that does not produce cutting swarfs such as excavating powder and abrasive flour, and can correctly carry out the rotor of the permanent magnet type electric rotary machine of balance adjustment
In order to achieve the above object, the rotor of the permanent magnet type electric rotary machine of the 1st mode of the utility model is characterized in that, comprising: the rotor core that keeps permanent magnet; With at least one the axial end that is installed on this rotor core, have and the riveted and fixed balance to adjust gimbal with a plurality of convexities of balance weight.
In addition, the rotor of the permanent magnet type electric rotary machine of the 2nd mode of the utility model is characterized in that, said gimbal is made up of in aluminium, aluminium alloy, aluminum casting spare and the aluminium alloy casting spare any one.
And the rotor of the permanent magnet type electric rotary machine of the 3rd mode of the utility model is characterized in that said gimbal is made up of cast iron.
The invention effect
According to the utility model; Because on the gimbal of at least one the axial end that is installed on rotor core; Be formed with and the riveted and fixed balance adjust a plurality of convexities with balance weight; So gimbal and rotor core are being installed under the state on the rotating shaft; At least protruding own through installation balance adjustment on the convexity of gimbal with balance weight or cut-out, can obtain can not produce and excavate cutting swarfs such as powder and abrasive flour, and can easily carry out the such effect of balance adjustment at short notice.
Description of drawings
Fig. 1 is the sectional drawing of permanent magnet type electric rotary machine of an execution mode of expression the utility model.
Fig. 2 is the stereogram of the rotor of presentation graphs 1.
Fig. 3 is the stereogram of state of pulling down the gimbal of Fig. 2.
Fig. 4 be Fig. 3 the P direction to view.
Fig. 5 is the stereogram that can be applicable to the gimbal of the utility model.
Fig. 6 is the exploded perspective view of the gimbal of Fig. 5.
Fig. 7 is the front view of the gimbal of Fig. 5.
Fig. 8 is the stereogram of the existing example of expression.
Fig. 9 is the stereogram that expression can be applicable to the end plate of existing example.
Figure 10 is the front view of the end plate of Fig. 9.
Symbol description
1 ... Permanent-magnet synchronous electric motor
2 ... Cylindric frame
3 ... Stator
4 ... Rotor
5 ... Rotating shaft
5a, 5b ... Bearing Installation portion
6 ... Stator core
7 ... The slit
8 ... Magnet exciting coil
12 ... Magnetic pole
13 ... Rotor core
14 ... The magnet inserting hole
15 ... Permanent magnet
16 ... Gimbal
17 ... Centre bore
18 ... Plectane
19 ... Axle bush
20 ... Protruding
21 ... Balance weight is used in the balance adjustment
Embodiment
Below, according to the execution mode of description of drawings the utility model.
Fig. 1 is the sectional drawing as the permanent-magnet synchronous electric motor of permanent magnet type electric rotary machine of an execution mode of expression the utility model.
In Fig. 1, permanent-magnet synchronous electric motor 1 has embedded magnet (IPM:Interior Permanent Magnet) structure.
This permanent-magnet synchronous electric motor 1 has cylindric frame 2, disposes stator 3 in interior all sides of this cylindric frame 2, disposes the relative rotor 4 in space across regulation in interior all sides of this stator 3.This rotor 4 is installed on the rotating shaft 5.
On the other hand, as shown in Figure 2, rotor 4 comprises: range upon range of and have a for example rotor core 13 of 6 magnetic poles 12 along axially with central layer to the rotor after the electromagnetic steel plate punching press of high permeability.This rotor core 13 comprises: a plurality of for example 6 the magnet inserting holes 14 that form along axial perforation; The permanent magnet 15 that in these magnet inserting holes 14, is inserted with the mode that according to adjacent in a circumferential direction magnetic pole 12 is opposed polarity.Here, permanent magnet 15 adopts rare earth element magnet to constitute.
And rotor 4 is as shown in Figure 2, and two axial end faces of the rotor core 13 in rotating shaft 5 have firmly fixed gimbal 16 through hot charging or mode such as be pressed into, and makes its rotation that circumferencial direction can not take place and axial moving.This gimbal 16 has the plectane 18 of the ring-type (doughnut) that aluminum or aluminum alloy processes, and it is formed with rotating shaft 5 and inserts and connect wherein and section is circular centre bore 17.
This plectane 18 and rotor core 13 between be provided with contact-making surface, 17 ones of centre bores,,, be fixed with circular axle bush 19 made of iron like Fig. 4 and shown in Figure 5 from rotor core 13 1 sides or protruding 20 1 sides.In addition, on the circumference of axle bush 19 through plectane 18 and the substantial middle portion between the neighboring, 12 convexities 20 opposite side-prominent and form to rotor core 13 equally spaced for example.This convexity 20 forms and can the riveted and fixed balance adjust with balance weight 21, and does not use the special cut that produces cutting swarfs such as excavating powder and abrasive flour, just can easily cut off with sheet metal instruments such as snips.
Here, plectane 18 and axle bush 19 are through aluminum or aluminum alloy being carried out die cast in that axle bush 19 is installed under the state in the die casting, make embedded axle bush 19 in plectane 18 and moulding.
Balance adjustment is as shown in Figure 2 with balance weight 21, forms to have centre bore cylindric that convexity 20 arbitrarily can embed insertion.
Below, the operation of above-mentioned execution mode is described.
For assemble rotor 4, at first as shown in Figure 3, install by the rotor core that electromagnetic steel plate constituted 13 that is laminated in the rotating shaft 5, at it after or before, insert insertion permanent magnet 15 in the through hole 14 at the magnet of rotor core 13.
Then; The axial two ends of the rotor core 13 in rotating shaft 5 are under the state of the axial end of the tabular surface butt rotor core 13 that makes gimbal 16, according to the rotation that can not carry out circumferencial direction and the axial mode that moves; Firmly fix gimbal 16, so the assembling of rotor 4 is accomplished.
Like this, gimbal 16 is installed, is formed at peristome that the magnet of rotor core 13 inserts through hole 14, can carry out the axial location of permanent magnet 15 by obturation through axial two ends at rotor core 13.
When the assembling of rotor 4 is accomplished, rotor 4 is installed in balancing machine.At this moment, 5a of Bearing Installation portion and the 5b with rotating shaft 5 is installed in the balancing machine as fulcrum.
Then, through in balancing machine, making rotor 4, measure the amount of unbalance of rotary body according to certain rotary speed rotation.Carry out balance adjustment according to the amount of unbalance of being measured, make in two face balances shown in the JIS B0905 etc., it is become below the feasible value corresponding with the quality of the high rotation speed of the use of rotating machinery and rotary body.The adjustment of this balance is used following method and is carried out the balance adjustment: as shown in Figure 2 the balance adjustment is installed on the convexity 20 balance adjustment method of riveted and fixed then with balance weight 21; Perhaps cut off the balance adjustment method of protruding 20 bodies with sheet metal instruments such as snips; Perhaps the balance adjustment is with the installation of balance weight 21 and the two balance adjustment method that all carries out of cut-out of protruding 20.
Like this,, use the convexity 20 that equally spaced is provided with a plurality of gimbals of protruding 20 16 in a circumferential direction to carry out the balance adjustment, therefore can easily carry out balance adjustment operation at short notice according to above-mentioned execution mode.And, can carry out the balance adjustment in the moment that the assembling of rotor 4 is accomplished, so can carry out correct balance adjustment.
And, because balance adjustment method can be selected: balance is adjusted with the balance adjustment method of balance weight 21 riveted and fixed on protruding 20; Cut off the balance adjustment method of the convexity 20 of desired area; Adjust with the installation of balance weight 21 and the two balance adjustment method that all carries out of cut-out of protruding 20 with balance, therefore can carry out very careful balance adjustment.
In addition, in existing example,, do not use the gimbal 16 of this execution mode, only use the end plate 31 at the axial two ends of fixed rotor core 13 like Fig. 6～shown in Figure 8.In this case, like Fig. 7 and shown in Figure 8, on end plate 31, form: become trim position roughly standard be formed on the periphery groove 32 be formed at the groove 33 on the end face; With forming the screw tap 34 of balance adjustment with balance weight is installed.And; According to the amount of unbalance of being measured, need implement the cutting operation of special machining and operation such as stable equilibrium adjustment screw on screw tap 34 to the part of groove 32 or 33; Be difficult to confirm trim position, such problem when having balance adjustment operation cost.In addition, if the cleaning work of the cutting swarf that is produced by cut etc. is also time-consuming and cleaning work is not thorough, then cutting swarf is invaded in the peripheral part and/or the 5a of Bearing Installation portion, 5b etc. of rotor 4, causes cause faults and become.
In order to prevent such fault, require the balance adjustment operation should be accurate again cautiously, therefore,, produce unevenly in the product according to long-timeization, operator and the machinery of activity duration, the quality problems such as instability that become are arranged.
But in this execution mode, as stated, balance adjustment operation is only carried out to the balance adjustment with the riveted and fixed of the convexity 20 of balance weight 21 and protruding 20 cut-out etc., thus can not produce cutting swarf, and can carry out the adjustment of correct balance at short notice.Particularly under the situation of the cut-out of carrying out lug boss; Cut convexity have can be visual size; Therefore almost can not worry to get in the peripheral part and the 5a of Bearing Installation portion, 5b etc. of rotor 4; Even the hypothesis intrusion is wherein in addition, also be very easy to find and its taking-up is removed, therefore can as aforesaid prior art, not pile up and quality decline by lapping rejects.
And; In the above-described embodiment; Situation in rotating shaft 5, being separately installed with gimbal 16 in the axial both end sides of rotor core 13 is illustrated; But not limited thereto, any installation gimbal 16 that also can be in rotor core 13 is installed the end plate that does not carry out the balance adjustment at another.
In addition; In the above-described embodiment, to being illustrated through aluminum or aluminum alloy being carried out the situation that die cast constitutes gimbal 16, but not limited thereto; Also can form plectane 18 through the cut aluminum or aluminum alloy; On this plectane 18, form protruding embedded hole, chimeric protruding 20 in this convexity embedded hole, constitute gimbal 16.And, also can cast cast iron and form gimbal 16.In this case, also can omit axle bush 19.
In addition; In the above-described embodiment; To the centre bore of plectane 18, the inner peripheral surface of axle bush 19 is that circular situation is illustrated; But not limited thereto, under the section configuration of the gimbal installation portion that makes rotating shaft 5 situation, can form and shape that these coincide for arbitrary shapes such as the both sides linear shape (two width of cloth shapes) of the rotation that stops circumferencial direction, square configuration, elliptical shapes.
In addition, in the above-described embodiment, be that 6 situation is illustrated to the number of magnetic poles of rotor 4, but not limited thereto, can set number of magnetic poles arbitrarily for.
In addition, in the above-described embodiment, the situation that a permanent magnet 15 is formed a magnetic pole is illustrated, but not limited thereto, can be V-shape or U word shape etc. with permanent magnet configuration also.
In addition, in the above-described embodiment, be that the situation that embedded magnet is constructed is illustrated to rotor 4, but not limited thereto, the surperficial magnet that also can be employed in outer peripheral face configuration permanent magnet is constructed.
In addition, in the above-described embodiment, the situation of using permanent-magnet synchronous electric motor as permanent magnet type electric rotary machine is illustrated, but not limited thereto, also can in other forms of permanent magnet type electric rotary machine, use the utility model.
Claims (3)
1. the rotor of a permanent magnet type electric rotary machine is characterized in that, comprising:
The rotor core that keeps permanent magnet; With at least one the axial end that is installed on this rotor core, have and the riveted and fixed balance to adjust gimbal with a plurality of convexities of balance weight.
2. the rotor of permanent magnet type electric rotary machine as claimed in claim 1 is characterized in that:
Said gimbal is made up of in aluminium, aluminium alloy, aluminum casting spare and the aluminium alloy casting spare any one.
3. the rotor of permanent magnet type electric rotary machine as claimed in claim 1 is characterized in that:
Said gimbal is made up of cast iron.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-023074 | 2011-02-04 | ||
| JP2011023074A JP2012165534A (en) | 2011-02-04 | 2011-02-04 | Rotor for permanent magnet rotary electric machine and balance adjustment method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202475060U true CN202475060U (en) | 2012-10-03 |
Family
ID=46844353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200342363U Expired - Lifetime CN202475060U (en) | 2011-02-04 | 2012-02-03 | Rotor of permanent magnet rotary motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012165534A (en) |
| CN (1) | CN202475060U (en) |
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| CN103683776A (en) * | 2012-09-14 | 2014-03-26 | 现代摩比斯株式会社 | Vehicle motor |
| CN103929011A (en) * | 2012-11-06 | 2014-07-16 | 米沃奇电动工具公司 | Electric Motor For A Power Tool |
| CN104753197A (en) * | 2015-03-24 | 2015-07-01 | 广东美芝制冷设备有限公司 | Compressor |
| WO2015165204A1 (en) * | 2014-04-30 | 2015-11-05 | 中山大洋电机股份有限公司 | Motor rotor assembly and motor applying same |
| CN105207428A (en) * | 2015-10-27 | 2015-12-30 | 南阳微特防爆电机有限公司 | Dynamic balancing weight structure and dynamic balancing method for motor rotor as well as test device |
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| CN108110928A (en) * | 2018-01-25 | 2018-06-01 | 博远机电（嘉兴）有限公司 | High pressure ultrahigh speed permanent magnet synchronous motor |
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| CN111684685A (en) * | 2018-01-31 | 2020-09-18 | 美蓓亚三美株式会社 | Rotor, motor, and method for manufacturing rotor |
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| US11784518B2 (en) | 2012-11-06 | 2023-10-10 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57115543U (en) * | 1981-01-12 | 1982-07-17 | ||
| JPH01131249U (en) * | 1988-03-02 | 1989-09-06 | ||
| JPH0326266U (en) * | 1989-07-18 | 1991-03-18 | ||
| JP2005160196A (en) * | 2003-11-25 | 2005-06-16 | Matsushita Electric Works Ltd | Brushless motor |
-
2011
- 2011-02-04 JP JP2011023074A patent/JP2012165534A/en active Pending
-
2012
- 2012-02-03 CN CN2012200342363U patent/CN202475060U/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| JP2012165534A (en) | 2012-08-30 |
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