CN107240994A - The manufacture method of armature - Google Patents
The manufacture method of armature Download PDFInfo
- Publication number
- CN107240994A CN107240994A CN201710194080.2A CN201710194080A CN107240994A CN 107240994 A CN107240994 A CN 107240994A CN 201710194080 A CN201710194080 A CN 201710194080A CN 107240994 A CN107240994 A CN 107240994A
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- China
- Prior art keywords
- insertion holes
- magnet insertion
- laminate core
- resin
- armature
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- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention provides a kind of manufacture method of the high armature of versatility, and it can improve the shape defect of armature, can eliminate the various problems because of caused by shape defect, no matter can constitute the species of the steel plate of laminate core to apply.Being respectively inserted into unmagnetized direction to the multiple magnet insertion holes (61) for being formed at laminate core (6) has the permanent magnet of negative coefficient of thermal expansion, afterwards, resin material is injected into magnet insertion holes (61), solidify resin material in magnet insertion holes (61), permanent magnet is fixed on laminate core (6), in the manufacture method of the armature, heat laminate core (6), when laminate core (6) is in specific temperature range, to specific magnet insertion holes (61) resin by injection material, afterwards, when laminate core (6) is in other temperature ranges different from specific temperature range, to other magnet insertion holes (61) resin by injection materials.
Description
Technical field
The present invention relates to the manufacture method of the armature with permanent magnet.
Background technology
The rotor of known IPM motor (Interior Permanent Magnet Motor, inner permanent magnetic motor) is so
, with the armature that the construction for having permanent magnet is embedded in the inside of laminate core.IPM motor is buried due to the inside in rotor core
Entering has permanent magnet, therefore, motor rotation in magnet will not be flown out due to centrifugal force, mechanical aspects it is safe.In addition,
IPM motor obtains high torque with high efficiency.Therefore, IPM motor as automobile with the power of, rolling stock with, other industries
Source, in recent years its utilization rapidly expands.
In the case of more, permanent magnet is inserted respectively into the magnet for being formed at laminate core by the rotor for constituting IPM motor
Patchhole, afterwards, to magnet insertion holes resin by injection, makes resin solidification in magnet insertion holes, permanent magnet is fixed on into stacking
(patent document 1,2) unshakable in one's determination.Patent document 1 is described after permanent magnet is inserted into the magnet insertion holes of laminate core, by layer
Laminated core is heated, and afterwards, injects resin into magnet insertion holes (the 0021st~0025 section).
In addition, being used as the permanent magnet being embedded in the rotor for constituting IPM motor, it is known that neodymium (Neodymium) magnet.Neodymium
Magnet is high due to magnetic flux density, with very strong magnetic force, therefore, if neodymium magnet is embedded into rotor, can obtain small-sized, strong
The motor of power.
Known neodymium magnet shows positive coefficient of thermal expansion in the direction of magnetization (easy magnetized direction), unmagnetized direction (with
The orthogonal direction of the direction of magnetization) negative coefficient of thermal expansion (patent document 3 (the 0049th section), patent document 4 (the 0005th section)) is shown.
I.e., it is known that if neodymium magnet is heated, neodymium magnet can expand in the direction of magnetization, and be shunk in unmagnetized direction.
It is laminated and is constituted in addition, laminate core is chip material, the chip material is will to pass through rolling process with mould
And the sheet metal (be referred to as " electromagnetic steel plate " based on its purposes or be referred to as " silicon steel plate " based on alloying component) manufactured is punched and obtained
Arrive.Constituting the chip material of rotor has circular profile.The profile for the mould that chip material is punched is also circular.However, i.e.
Sheet metal is punched using the mould with circular profile, the profile of chip material can also turn into ellipse sometimes.That is, after punching
Chip material produces deformation sometimes.
For example, the 0007th section of patent document 5 describes and " in stator core sheet material of the periphery for circle, has as shown in Figure 9
In the case of outside dimension increase in the rolling direction of electromagnetic steel plate, outside dimension reduces in the direction orthogonal with rolling direction；
Conversely, outside dimension reduces in the rolling direction of electromagnetic steel plate in the case of having, outside dimension is in the side orthogonal with rolling direction
To increase.”.
The laminate core for generating the shape defect because of caused by the deformation of chip material is being arranged on to the shell of electric rotating machine
When on body, housing can produce deformation.When housing produces deformation, electric rotating machine can produce various problems.In addition, shape will be generated
When being installed on housing to bad laminate core shrink fit, gap can be produced in a part between laminate core and housing.
Therefore, the contact area of laminate core and housing diminishes.As a result, the fixation of laminate core becomes insufficient, in high load capacity
The fixation of laminate core can yield to the generation torque of electric rotating machine during operating, and laminate core is possible to rotate.
Invention described in patent document 5 is to solve the above problems, in the housing of electric rotating machine, by the stator core of punching
The position that the position that the outside dimension of sheet material is more than formal size is abutted is as non-fixed position, by outside dimension and formal chi
The position that the less position of very little difference is abutted is as fixed position.
Invention according to described in patent document 5, may be solved because of the inconsistent of the shape of laminate core and housing
Caused various problems.However, the shape defect of laminate core does not improve itself.Therefore, according to described in patent document 5
Invention, the problem because of caused by the shape defect of laminate core is not solved, for example, because of the gap between rotor and stator
The variation of (air gap) and the torque that produces change, vibration the problem of.
Certainly, by the generation of the shape defect to laminate core suppress for the purpose of invention be applied.For example,
Patent document 6 discloses that the blanking method of non-oriented electromagnetic steel sheet, it is characterised in that according to stretching for non-oriented electromagnetic steel sheet
Long rate controls the roundness of the cutting edge of blanking die.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2014-138533 publications
Patent document 2：Japanese Unexamined Patent Publication 2014-220911 publications
Patent document 3：Japanese Unexamined Patent Publication 2007-273850 publications
Patent document 4：Japanese Unexamined Patent Publication 2012-152069 publications
Patent document 5：Japanese Unexamined Patent Publication 2009-112096 publications
Patent document 6：Japanese Unexamined Patent Publication 10-24333 publications
The content of the invention
The problem of present invention is to be solved
According to patent document 6, the roundness of the cutting edge by controlling blanking die, so as to make the profile of chip material
As circular.As a result, eliminating the shape defect of laminate core, the change of the output torque of electric rotating machine is also eliminated
It is dynamic.Although however, it is that below 4 weight %, Al are the directionless of below 2 weight % that patent document 6, which is disclosed being punched containing Si,
Property electromagnetic steel plate in the case of the control formula of the roundness of the cutting edge of blanking die that is applicable, but disclosing other situations
Under control formula.Therefore, the invention described in patent document 6 has a problem that：It is being punched the non-oriented magnetic steel
It can be applicable, but can not be applicable in the other cases in the case of plate.That is, come in the steel plate being punched beyond the electromagnetic steel plate
In the case of manufacturing chip material, the invention described in patent document 6 can not eliminate the deformation of chip material.
Therefore, the invention described in patent document 6 has a problem that：For by by the steel plate beyond the electromagnetic steel plate
The armature that the chip material of composition is laminated and constituted, it is impossible to improve shape defect, it is impossible to eliminate various because of caused by shape defect
Problem.
The present invention in view of such situation and complete, its object is to provide a kind of manufacturer of the high armature of versatility
Method, it can improve the shape defect of armature, can eliminate the various problems because of caused by shape defect, no matter layer can be constituted
The species of the steel plate of laminated core is applied.
The solution used to solve the problem
The manufacture method of armature involved in the present invention is inserted respectively to the multiple magnet insertion holes for being formed at laminate core
There is the permanent magnet of negative coefficient of thermal expansion in unmagnetized direction, afterwards, inject resin into magnet insertion holes, make resin in magnet
Solidify in patchhole, permanent magnet is fixed on laminate core, wherein, it is in the laminate core by laminate core heating specific
During temperature range, to the specific magnet insertion holes resin by injection among multiple magnet insertion holes, afterwards, it is in laminate core
During other different from specific temperature range temperature ranges, to the specific magnet insertion holes among multiple magnet insertion holes with
Other outer magnet insertion holes resin by injection.
Can also after resin is filled with to specific magnet insertion holes, cool down laminate core, reached in laminate core
During lower than specific temperature range temperature, to other magnet insertion holes resin by injection.
Can also after resin is filled with to specific magnet insertion holes, heat laminate core, reached in laminate core
During higher than specific temperature range temperature, to other magnet insertion holes resin by injection.
Can also be that specific magnet insertion holes are one group of magnet insertion holes, in the rolling side with the blank of laminate core
Arranged into the direction of special angle.
Can also be, when every time to 1 magnet insertion holes resin by injection among multiple magnet insertion holes, change stacking
Temperature unshakable in one's determination, afterwards, to other magnet insertion holes resin by injection.
Can also, when the temperature of laminate core is in 120 DEG C to 200 DEG C of scope, inject and set to magnet insertion holes
Fat.
Invention effect
In accordance with the invention it is possible to the shape defect to being embedded to the armature for having permanent magnet 9 and constituting in the inside of laminate core 6
Corrected.As a result, in the electric rotating machine including the armature, the generation for the problems such as torque changes is suppressed, electric rotating
The performance of machine is improved.
Brief description of the drawings
Fig. 1 is to show armature manufacture device used in the manufacture method of the armature involved by embodiments of the present invention
The top view of composition.
Fig. 2 is the front view for the composition for showing the preheating device included by the armature manufacture device described in Fig. 1.
Fig. 3 is the front view for the composition for showing the resin sealing apparatus included by the armature manufacture device described in Fig. 1.
Fig. 4 is the pie graph of the laminate core involved by embodiments of the present invention, and Fig. 4 (a) is bowing for laminate core
Depending on Fig. 4 (b) is the side view of laminate core.
Fig. 5 is the explanation for showing to constitute the manufacture method of the blanket of the laminate core involved by embodiments of the present invention
Figure.
Fig. 6 is the explanation figure for the manufacture method for showing the armature involved by embodiments of the present invention, is laminate core
Top view.
Fig. 7 is the explanation figure of the other examples for the manufacture method for showing the armature involved by embodiments of the present invention, is
The top view of laminate core.
Fig. 8 is to show to correct the explanation figure of the principle of the deformation of laminate core in embodiments of the present invention, Fig. 8's
(a)~Fig. 8 (d) is to show to correct the figure of the process of the deformation of laminate core with time series.
The explanation of reference
1：Manufacture device
2：Carrying transferring belt
3：Preheating device
4：Resin sealing apparatus
5：Transportation tray
6：Laminate core
7：Dividing plate
8：Resin material
9：Permanent magnet
10：Blanket
11：Blank
31：Bottom heating part
32：Fixed base
33：Lifting unit
34：Top heating part
35：Sidepiece heating part
41：Lower mould
42：Upper mould
43：Resin inlet
44：Plunger
61：Magnet insertion holes
61a…61p：Magnet insertion holes
62：Axis hole
63：Outer ring
71：Resin inlet
100：Computer
Embodiment
Below, the manufacture method of the armature involved by embodiments of the present invention is described in detail with reference to the attached drawings.
(manufacture device)
Fig. 1 is the top view of the composition for the manufacture device 1 for showing the armature involved by embodiments of the present invention.Such as Fig. 1
Shown, manufacture device 1 includes carrying transferring belt 2, preheating device 3 and resin sealing apparatus 4.In addition, manufacture device 1 includes calculating
Machine 100, carrying transferring belt 2, preheating device 3 and resin sealing apparatus 4 are controlled to be acted by computer 100.
(carrying transferring belt)
Carrying transferring belt 2 is that will be manufactured in configuration in the upstream process (not shown) in the left side of manufacture device 1 in Fig. 1
Laminate core 6 be moved to the device of manufacture device 1.The laminate core 6 for finishing the processing in manufacture device 1 is handled upside down biography
Band 2 is sent to take out of the lower procedure (not shown) configured in Fig. 1 on the right side of manufacture device 1.
The laminate core 6 of manufacture device 1 is moved to by transfer device (not shown) from upstream process, from carrying transferring belt 2
It is transplanted on preheating device 3.Preheating device 3 is to heat laminate core 6 and the temperature of preheating device 3 is warming up to what is be determined in advance
The device of temperature.In the detailed composition of rear description preheating device 3.
The laminate core 6 for completing the heating in preheating device 3 is returned to carrying transferring belt 2, is utilized not shown
Other transfer devices, be transplanted on resin sealing apparatus 4 from carrying transferring belt 2.In resin sealing apparatus 4, to laminate core 6
Inject potting resin.The laminate core 6 for completing resin filling is removed from resin sealing apparatus 4, is returned to carrying and is passed
Band 2 is sent, lower procedure (not shown) is moved to.In the detailed composition of rear description resin sealing apparatus 4.
(preheating device)
As shown in Fig. 2 preheating device 3 includes：The bottom for having the progress placing of transportation tray 5 of laminate core 6 to placing adds
Hot portion 31；And it is fixed on the fixed base 32 of set-up site.Being fixed with fixed base 32 makes on bottom heating part 31
The lifting unit (such as jack) 33 of lower lifting.In addition, preheating device 3 has：Risen to positioned at using lifting unit 33
The top heating part 34 of the top of the laminate core 6 (for shown in dotted line in Fig. 2) of extreme position；And surround the stacking iron from side
The sidepiece heating part 35 of the heart 6.The sidepiece heating part 35, by two points, is configured to the part by making segmentation with layer in transverse direction
It is mobile so as to switch (shown in Fig. 2 arrow) in the horizontal direction centered on laminated core 6.In addition, each included by preheating device 3
Heating part 31,34,35 is provided with electric heater (not shown), and laminate core 6 is heated using the electric heater.In addition, as above
Described, preheating device 3 is controlled to be acted by computer 100.
(resin sealing apparatus)
Resin sealing apparatus 4 as shown in figure 3, including：The transportation tray 5 for having laminate core 6 to placing is carried out under placing
Mould 41；And the upper mould 42 by placing on laminate core 6.In addition, being clamped with dividing plate between laminate core 6 and upper mould 42
(English：dummy plate)7.That is, the lower surface of dividing plate 7 is abutted with the upper surface of laminate core 6, the upper surface of dividing plate 7 with it is upper
The lower surface of mould 42 is abutted.In addition, dividing plate 7 is a kind of lid, prevent from being injected into the magnet insertion holes of laminate core 6 from upper mould 42
61 resin material 8 spreads in the upper surface of laminate core 6 and is attached to the upper surface of laminate core 6.Dividing plate 7 is also referred to as backing plate
(caul plate)。
Upper mould 42 includes and the quantity identical resin inlet 43 of magnet insertion holes 61 included by laminate core 6.That is, exist
To be configured with resin inlet 43 with the one-to-one mode of magnet insertion holes 61 included by laminate core 6 on upper mould 42.Respectively
Resin inlet 43 is by the upper up/down perforation of mould 42.
At the position abutted with the resin inlet 43 of upper mould 42 of dividing plate 7, resin inlet 71 is provided with.Inserted to magnet
Enter the resin material 8 of the filling of hole 61 under the liquid condition of melting, pass through the resin inlet 43 of upper mould 42, the resin of dividing plate 7
Inlet 71, is injected into magnet insertion holes 61.In addition, in upstream process, permanent magnet is inserted in each magnet insertion holes 61
9.It is injected into the resin material 8 of magnet insertion holes 61 in magnet insertion holes 61 to solidify, permanent magnet 9 is fixed on magnet insertion holes
In 61.
Plunger 44 is installed in each resin inlet 43.Plunger 44 is will to be supplied and quilt from resin feedway (not shown)
The part that the resin material 8 being maintained in resin inlet 43 is extruded to magnet insertion holes 61.Plunger 44 is by driving (not shown)
Device drives.In addition, multiple plungers 44 (driver (not shown) for driving the plunger 44) included by resin sealing apparatus 4 are counted
Calculation machine 100 is controlled, together or indivedual or acted to each group.Therefore, resin sealing apparatus 4 can be by resin material
8 inject all magnet insertion holes 61 being filled into included by laminate core 6 together.In addition, resin sealing apparatus 4 can also be to layer
Resin material 8 is not individually being injected filling by all magnet insertion holes 61 included by laminated core 6 in the same time respectively.In addition,
Resin sealing apparatus 4 all magnet insertion holes 61 included by laminate core 6 can also be divided into it is multigroup, by group when different
Resin material 8 is injected filling by quarter.
(laminate core)
Next, the composition and construction of explanation laminate core 6.Laminate core 6 be constitute electric rotating machine armature (for example
The rotor of IPM motor) element, shown in such as Fig. 4 (b), multiple blankets 10 are laminated and constituted.In addition, such as Fig. 4
(a) shown in, 16 magnet insertion holes 61 are formed with laminate core 6.Magnet insertion holes 61 using the center of laminate core 6 as
Arranged on the circumference at center.As described above, inserted with permanent magnet 9 in magnet insertion holes 61, permanent magnet 9 is inserted by being filled in magnet
The resin material 8 entered in hole 61 is fixed on laminate core 6.In addition, laminate core 6 be centrally formed with laminate core 6 is passed through
Logical axis hole 62.The rotary shaft for being embedded with electric rotating machine (not shown) is inserted in axis hole 62.
The blanket 10 of laminate core 6 is constituted as shown in figure 5, being formed by the punching of blank 11 from band plate-like.Blank 11
Manufactured by roll mill (not shown), with the form for the coiled material for being wound as web-like, be supplied to the manufacturing process of blanket 10.Then,
Blank 11 is pulled out from coiled material (not shown), in Figure 5, is transferred, is gradually processed from left to right.That is, in the 1st process,
Magnet insertion holes 61 are punched out from blank 11, afterwards, blank 11 is shifted into the 2nd process.In the 2nd process, rushed from blank 11
Axis hole 62 is determined, afterwards, blank 11 is shifted into the 3rd process.In the 3rd process, outer ring 63 is punched out from blank 11, the 4th
In process, blanket 10 is isolated from blank 11.In addition, as noted previously, as blank 11 by from be wound as web-like coiled material pull out,
Therefore, the long side direction (being left and right directions in Fig. 5) of blank 11 is consistent with the rolling direction of blank 11.In addition, in stacking blanket
In 10 process, make direction consistent in the way of the rolling direction of each blanket 10 is towards same direction and be laminated.That is, in figure
In 4 (a), put like that in left and right directions of the blanket 10 using rolling direction as Fig. 4 (a) of the superiors positioned at laminate core 6
In the case of putting, constitute left and right directions of all blankets 10 of laminate core 6 using rolling direction as Fig. 4 (a) and place like that.
(the 1st embodiment)
Next, reference picture 6, illustrates the manufacture method of the armature involved by the 1st embodiment of the present invention.Fig. 6 is layer
The top view of laminated core 6.In addition, in Fig. 6,16 magnet insertion holes 61 add respectively additional marking a, b ... p, by each
Magnet insertion holes 61 are distinguished.
It it is 2 groups by 16 61p points of magnet insertion holes 61a, 61b ... in the 1st embodiment.That is, magnet insertion holes
61a ... 61d and magnet insertion holes 61i ... 61l are the 1st group.Moreover, magnet insertion holes 61e ... 61h and magnet insertion holes
61m ... 61p are the 2nd group.As shown in fig. 6, belonging to the 1st group of magnet insertion holes 61 in the blanket 10 with constituting laminate core 6
Rolling direction it is parallel direction arrangement.Belong to the 2nd group of magnet insertion holes 61 rolling in the blanket 10 with constituting laminate core 6
The orthogonal direction arrangement in direction processed.
In the 1st embodiment, first, laminate core 6 is heated up to more than 180 DEG C in preheating device 3.Then, will
Laminate core 6 is moved to resin sealing apparatus 4, measures the temperature of laminate core 6.Measuring the means of the temperature of laminate core 6 is
Arbitrarily.The temperature that contact as thermocouple can be equipped with the lower mould 41 or upper mould 42 of resin sealing apparatus 4 is passed
Sensor, can also be equipped with TEMP contactless as infrared radiation thermometer around resin sealing apparatus 4
Device.Moreover, the temperature of laminate core 6 is reached after 180 DEG C, to belong to the 1st group magnet insertion holes 61 (61a ... 61d and
61i ... 61l) resin by injection material 8.Resin material 8 makes layer to after the completion of the injection for the magnet insertion holes 61 for belonging to the 1st group
The natural cooling of laminated core 6.Then, the temperature of laminate core 6 is reached after 170 DEG C, to the magnet insertion holes 61 for belonging to the 2nd group
(61e ... 61h and 61m ... 61p) resin by injection material 8.Note from resin material 8 to the magnet insertion holes 61 for belonging to the 2nd group
After the completion of entering, make the natural cooling of laminate core 6.Laminate core 6 is cooled and is injected into the resin material 8 of magnet insertion holes 61 and consolidates
After change, laminate core 6 is taken out of from resin sealing apparatus 4.
In addition, the heating target of the laminate core 6 of preheating device 3 is：Injected to the magnet insertion holes 61 for belonging to the 1st group
In the temperature (180 DEG C) of resin material 8, add to be transported to laminate core 6 into the phase of resin sealing apparatus 4 from preheating device 3
Between the temperature drop that produces as surplus value.That is, in preheating device 3,180+ α DEG C feelings are warmed in laminate core 6
Under condition, α is equivalent to laminate core 6 to be carried to the temperature drop that is produced during resin sealing apparatus 4 from preheating device 3.
(the 2nd embodiment)
The manufacture method of armature involved in the present invention is not limited to 16 magnet insertion holes 61 being divided into 2 groups, and not
To each group resin by injection material 8 under same temperature conditionss.16 magnet insertion holes 61 can also be divided into more than 3 groups, and
To each group resin by injection material 8 under different temperature conditionss.Therefore, in the 2nd embodiment, as shown in fig. 7, by 16 magnets
Patchhole 61 is divided into 3 groups.That is, magnet insertion holes 61b, 61c, 61j, 61k be the 1st group, magnet insertion holes 61d, 61e, 61h,
61i, 61l, 61m, 61p, 61a are the 2nd group, and magnet insertion holes 61f, 61g, 61n, 61o are the 3rd group.
Moreover, laminate core 6 is heated up into more than 180 DEG C in preheating device 3.Afterwards, laminate core 6 is moved to tree
Fat sealing device 4, measures the temperature of laminate core 6.The temperature of laminate core 6 is reached after 180 DEG C, to the magnet for belonging to the 1st group
(61b, 61c, the 61j, 61k) resin by injection of patchhole 61 material 8.Note from resin material 8 to the magnet insertion holes 61 for belonging to the 1st group
After the completion of entering, make the natural cooling of laminate core 6.Then, the temperature of laminate core 6 is reached after 160 DEG C, to the magnetic for belonging to the 2nd group
(61d, 61e, 61h, 61i, 61l, 61m, the 61p, 61a) resin by injection of body patchhole 61 material 8.Resin material 8 is to belonging to the 2nd group
Magnet insertion holes 61 injection after the completion of, make the natural cooling of laminate core 6.Then, the temperature of laminate core 6 reaches 140 DEG C
Afterwards, to (61f, 61g, the 61n, 61o) resin by injection of magnet insertion holes 61 material 8 for belonging to the 3rd group.Laminate core 6 it is cooled and
It is injected into after the solidification of the resin material 8 of magnet insertion holes 61, laminate core 6 is taken out of from resin sealing apparatus 4.In addition, pre-
The heating target of laminate core 6 in thermal 3 is：In the temperature to the resin by injection material 8 of magnet insertion holes 61 for belonging to the 1st group
Spend on (180 DEG C), at a temperature of adding to be produced during laminate core 6 is transported into resin sealing apparatus 4 from preheating device 3
Value as surplus drops.
(correction of shape defect)
Finally, reference picture 8, illustrate to correct the shape of laminate core 6 using the method involved by the 1st and the 2nd embodiment
The bad principle of shape.Fig. 8 (a) be the laminate core 6 for showing normal temperature magnet insertion holes 61 and permanent magnet 9 shape vertical view
Figure.Permanent magnet 9 is neodymium magnet, magnetizes easy performance different according to direction.In Fig. 8 each figure, X-axis shows permanent magnet 9
Magnetize (easy) axle, Y-axis shows the unmagnetized axle of permanent magnet 9.That is, permanent magnet 9 with magnetize (easy) axle with X-axis consistent and non-magnetic
Change the axle mode consistent with Y-axis to configure in magnet insertion holes 61.In addition, neodymium magnet, i.e. permanent magnet 9 are in magnetized axis (X-axis) side
To with positive coefficient of thermal expansion, there is negative coefficient of thermal expansion in unmagnetized axle (Y-axis) direction.Therefore, if permanent magnet 9 is heated,
Then permanent magnet 9 expands in X-direction, is shunk in Y direction.
Fig. 8 (b) is the shape for showing magnet insertion holes 61 and permanent magnet 9 in the case that laminate core 6 is heated
Top view.In this case, magnet insertion holes 61 are in X-axis and Y direction expansion (dimension enlargement).Permanent magnet 9 is swollen in X-direction
Swollen (dimension enlargement), (size reduction) is shunk in Y direction.As a result, the gap between magnet insertion holes 61 and permanent magnet 9
Expand.Particularly, the gap enlargement of Y direction.
So, if in the state of laminate core 6 is heated, to the resin by injection material 8 of magnet insertion holes 61, then such as Fig. 8
(c) shown in, resin material 8 can be filled in the gap between magnet insertion holes 61 and permanent magnet 9.
After resin material 8 is filled with to magnet insertion holes 61, if laminate core 6 is cooled down, make the temperature of laminate core 6
Normal temperature is reverted to, then the resin material 8 in the gap being filled between magnet insertion holes 61 and permanent magnet 9 can solidify.Now, magnet
Patchhole 61 shrinks (size reduction) in X-axis and Y direction.Permanent magnet 9 shrinks (size reduction) in X-direction, in Y direction
Expand (dimension enlargement).That is, the shape shown in magnet insertion holes 61 and the Fig. 8 to be reverted to of permanent magnet 9 (a).However, such as Fig. 8
(d) shown in, due in the gap between magnet insertion holes 61 and permanent magnet 9 be filled with resin material 8, therefore, magnet insert
Enter the size (size shown in Fig. 8 (a)) that the size of the Y direction in hole 61 will not recover original.Magnet insertion holes 61 are from interior
Side is pressed by permanent magnet 9 and resin material 8 in Y direction.Therefore, the dimension enlargement of the Y direction of magnet insertion holes 61.It is tied
Fruit is, laminate core 6 is also around magnet insertion holes 61, to by the Direction distortion of the dimension enlargement of Y direction.In addition,
In Fig. 8 (d), the heavy line with arrow shows now to act on the pressing force of magnet insertion holes 61.
In addition, laminate core 6 of the state relative to the state shown in Fig. 8 (a) shown in Fig. 8 (d) is in Y direction
The difference of size, changes according to the temperature to the laminate core 6 during 6 resin by injection material 8 of laminate core.If resin by injection
The temperature of laminate core 6 during material 8 is than higher temperatures, then the magnet insertion holes 61 and permanent magnetism of the state shown in Fig. 8 (b)
Gap between body 9 can increase.Therefore, the amount for the resin material 8 being injected into magnet insertion holes 61 can increase.Moreover, in Fig. 8
(d) shown in the state of, the resin material 8 in the gap for the Y direction being filled between magnet insertion holes 61 and permanent magnet 9
Thickness can increase.As a result, magnet insertion holes 61 and laminate core 6 significantly expand in Y direction.
On the other hand, if the temperature of the laminate core 6 during resin by injection material 8 is low temperature, then the situation with high temperature
Compare, the gap between the magnet insertion holes 61 and permanent magnet 9 of the state shown in Fig. 8 (b) can reduce.Therefore, it is injected into magnetic
The amount of resin material 8 in body patchhole 61 can reduce.Moreover, in the state of shown in Fig. 8 (d), being filled into magnet insertion
The thickness of resin material 8 in the gap of Y direction between hole 61 and permanent magnet 9 can reduce.As a result, magnet insertion holes
61 and laminate core 6 the size of Y direction extensive magnitude reduce.
The temperature of laminate core 6 when so, by resin by injection material 8 increases and decreases, so as to increase and decrease in note
Extensive magnitude of the magnet insertion holes 61 and laminate core 6 that the resin material 8 entered is produced after solidifying in the size of Y direction.Moreover,
The shape defect of laminate core 6 can be corrected using the phenomenon.That is, in the size for wishing significantly expansion Y direction
Position magnet insertion holes 61, greatly improve laminate core 6 temperature and resin by injection material 8, for magnetic in addition
Body patchhole 61, makes the temperature of laminate core 6 than relatively low and resin by injection material 8, so as to correct the shape of laminate core 6
Shape.
In above-mentioned 1st embodiment, belong to the chi of the 1st group of the Y direction after the solidification of resin material 8 of magnet insertion holes 61
Very little ratio significantly expands.The expansion of the size of Y direction after the solidification of resin material 8 for the magnet insertion holes 61 for belonging to the 2nd group
Amount is small compared with belonging to the 1st group of magnet insertion holes 61.In above-mentioned 2nd embodiment, be also belong to the 1st group magnet insertion
The size of the Y direction after the solidification of resin material 8 of hole 61 is also than significantly expanding.Belong to the tree of the 2nd group of magnet insertion holes 61
Fat material 8 solidify after Y direction size extensive magnitude, it is small compared with belonging to the 1st group of magnet insertion holes 61.Belong to the 3rd
Group magnet insertion holes 61 resin material 8 solidify after Y direction size extensive magnitude, with belong to the 2nd group magnet insert
Enter hole 61 compared to small.That is, the dimension enlargement amount of Y direction of magnet insertion holes 61 after resin material 8 solidifies is：1st group most
Greatly, the 2nd group is taken second place, and the 3rd group minimum.
More than, as described, according to the embodiment of the present invention, the inside embedment in laminate core 6 can be corrected
The shape defect of permanent magnet 9 and the armature of composition.As a result, in the electric rotating machine including the armature, torque variation etc. is asked
The generation of topic is suppressed, and the performance of electric rotating machine is improved.In addition, the manufacture method of the armature involved by above-mentioned embodiment can
No matter constituting the species of the steel plate of laminate core to apply.
However, the technical scope of the present invention is not limited to above-mentioned embodiment.The present invention is in the skill described in claims
In art thought, can with Free Transform, using or improve and implement.
For example, the unit that the temperature of the laminate core 6 during resin by injection material 8 is changed is not limited to " magnet insertion holes 61
Group ".The temperature and resin by injection material 8 of laminate core 6 can also be changed for each magnet insertion holes 61.In addition, constituting
The number of the magnet insertion holes 61 of " group " is also arbitrary.
In addition, in above-mentioned 1st embodiment, as " relative to laminate core 6 blank material rolling direction into specific
The concrete example in the direction of angle ", illustrates " direction parallel with the rolling direction of blanket 10 " and " rolling direction with blanket 10
Orthogonal direction ".However, " into the direction of special angle " is not limited to " parallel direction ", " orthogonal direction ".Can arbitrarily it select
Select " specific angle ".
In the above-described embodiment, show independently includes preheating device in manufacture device 1 with resin sealing apparatus 4
3 example, but preheating device 3 can also be integrally formed with resin sealing apparatus 4.For example, it is also possible in resin sealing apparatus 4
Upper installation thermal source, can be installed in the state of resin sealing apparatus 4 by laminate core 6, laminate core 6 is heated.
In the above-described embodiment, as the thermal source for heating laminate core 6, show includes electricity in preheating device 3
The example of heater.However, the thermal source included by preheating device 3 and preheating device 3 and resin sealing apparatus 4 is integral
In the case that ground is constituted, the thermal source included by resin sealing apparatus 4 is not limited to electric heater.The thermal source can also be added using sensing
Heat or hot blast heat laminate core 6.Or, the thermal source can also combine the heating that electric heater carried out, sensing heating,
In the heating carried out with hot blast it is any two or more, laminate core 6 is heated.
In the above-described embodiment, show in resin sealing apparatus 4, cool down laminate core 6 while to magnet
The example of the resin by injection material 8 of patchhole 61.That is, following example is shown：Specific temperature range is in laminate core 6
When, after resin material 8 is filled with to specific magnet insertion holes 61, laminate core 6 is cooled down, is in laminate core 6 than institute
When stating low other temperature ranges of specific temperature range, to other resin by injection materials 8 of magnet insertion holes 61.However, this hair
The scope not limited to this of bright technology.Can also be while heat laminate core 6, while to the resin by injection material of magnet insertion holes 61
8.For example in the case where resin sealing apparatus 4 includes the thermal source that heats laminate core 6, it can also be in laminate core 6
During specific temperature range, to after the specific resin by injection material 8 of magnet insertion holes 61, laminate core 6 is heated, in stacking iron
When the heart 6 has reached other temperature ranges higher than the specific temperature range, to other resin by injection materials of magnet insertion holes 61
Material 8.
In the 1st embodiment, following example is shown：When the temperature of laminate core 6 is 180 DEG C, to belonging to
1st group of the resin by injection material 8 of magnet insertion holes 61, when the temperature of laminate core 6 is 170 DEG C, to the magnet for belonging to the 2nd group
The resin by injection material 8 of patchhole 61.In this case, 180 DEG C equivalent to " specific temperature range ", and 170 DEG C equivalent to " other
Temperature range ".In addition, showing following example in the 2nd embodiment：When the temperature of laminate core 6 is 180 DEG C,
To the resin by injection material 8 of magnet insertion holes 61 for belonging to the 1st group, when the temperature of laminate core 6 is 160 DEG C, to belonging to the 2nd group
The resin by injection material 8 of magnet insertion holes 61, laminate core 6 temperature be 140 DEG C when, to belong to the 3rd group magnet insert
The resin by injection material 8 of hole 61.In this case, 180 DEG C equivalent to " specific temperature range ", and 160 DEG C equivalent to " specific temperature
Spend scope " or " other temperature ranges ", 140 DEG C equivalent to " other temperature ranges ".However, " specific temperature range " and
" other temperature ranges " not limited to this." specific temperature range " and " other temperature ranges " arbitrarily can be selected and set.When
So, when the temperature of laminate core 6 is too high, the resin material 8 for being injected into magnet insertion holes 61 is possible to rotten.Laminate core 6
When temperature is too low, the mobility for being injected into the resin material 8 of magnet insertion holes 61 declines, therefore is undesirable.It is preferred, therefore, that
Be that " specific temperature range " and " other temperature ranges " is selected and set in 120 DEG C to 200 DEG C of scope.
In the above-described embodiment, the example shown is by " specific temperature range " and " other temperature ranges " such as 180
DEG C or 170 DEG C, 140 DEG C set with Accurate Points like that, but the invention is not restricted to set " temperature range " with Accurate Points." temperature
Degree scope " can be set with the upper limit or lower limit, can also be set with upper and lower bound.
In the above-described embodiment, as the concrete example of " permanent magnet in unmagnetized direction with negative coefficient of thermal expansion ",
Neodymium magnet is illustrated, but " permanent magnet in unmagnetized direction with negative coefficient of thermal expansion " is not limited to neodymium magnet.It is of the invention extensive
What is occurred existing or future suitable for manufacturing includes the electricity of " permanent magnet in unmagnetized direction with negative coefficient of thermal expansion "
Pivot.
In the above-described embodiment, as the concrete example of armature, the rotor of IPM motor is illustrated, but has been applicable the present invention
Armature be not limited to the rotor of IPM motor.The armature for being applicable the present invention can be beyond stator or IPM motor
Rotor or stator included by motor.In addition, the armature for being applicable the present invention is not limited to constitute the armature of motor.The present invention
It is also applied for the armature that manufacture constitutes generator.
Claims (8)
1. a kind of manufacture method of armature,
Being respectively inserted into unmagnetized direction to the multiple magnet insertion holes for being formed at laminate core has negative coefficient of thermal expansion forever
Magnet, afterwards, injects resin into the magnet insertion holes, resin is solidified in the magnet insertion holes, by the permanent magnetism
Body is fixed on the laminate core, wherein,
The laminate core is heated and the laminate core be in specific temperature range when, to the multiple magnet insert
Specific magnet insertion holes among hole inject the resin,
Afterwards, when the laminate core is in other temperature ranges different from the specific temperature range, to described many
Other magnet insertion holes outside the specific magnet insertion holes among individual magnet insertion holes inject the resin.
2. the manufacture method of armature as claimed in claim 1, it is characterised in that
After the resin is filled with to the specific magnet insertion holes, the laminate core is cooled down, in the laminate core
When reaching the temperature lower than the specific temperature range, the resin is injected to other described magnet insertion holes.
3. the manufacture method of armature as claimed in claim 1, it is characterised in that
After the resin is filled with to the specific magnet insertion holes, the laminate core is heated, in the laminate core
When reaching the temperature higher than the specific temperature range, the resin is injected to other described magnet insertion holes.
4. the manufacture method of the armature as described in any one of claims 1 to 3, it is characterised in that
The specific magnet insertion holes are one group of magnet insertion holes, in the rolling direction Cheng Te with the blank of the laminate core
Determine the direction arrangement of angle.
5. the manufacture method of the armature as described in any one of claims 1 to 3, it is characterised in that
When injecting the resin to 1 magnet insertion holes among the multiple magnet insertion holes every time, the stacking is changed
Temperature unshakable in one's determination, afterwards, the resin is injected to other magnet insertion holes.
6. the manufacture method of the armature as described in any one of claims 1 to 3, it is characterised in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of scope, the tree is injected to the magnet insertion holes
Fat.
7. the manufacture method of armature as claimed in claim 4, it is characterised in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of scope, the tree is injected to the magnet insertion holes
Fat.
8. the manufacture method of armature as claimed in claim 5, it is characterised in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of scope, the tree is injected to the magnet insertion holes
Fat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-063703 | 2016-03-28 | ||
| JP2016063703A JP6754207B2 (en) | 2016-03-28 | 2016-03-28 | Armature manufacturing method |
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| Publication Number | Publication Date |
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| CN107240994A true CN107240994A (en) | 2017-10-10 |
| CN107240994B CN107240994B (en) | 2019-08-30 |
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| CN (1) | CN107240994B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521428A (en) * | 2008-02-26 | 2009-09-02 | 通用汽车环球科技运作公司 | Electric motor assembly with stator mounted in vehicle powertrain housing and installation method thereof |
| JP2010004647A (en) * | 2008-06-19 | 2010-01-07 | Daikin Ind Ltd | Rotor |
| CN103812282A (en) * | 2012-11-09 | 2014-05-21 | 株式会社三井高科技 | Method for manufacturing laminated iron core |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4137962B2 (en) * | 2006-01-11 | 2008-08-20 | 株式会社三井ハイテック | Resin sealing method of permanent magnet to rotor laminated core |
| JP2008109777A (en) * | 2006-10-25 | 2008-05-08 | Toyota Motor Corp | Rotor, rotary motor, and manufacturing method for the rotor |
| JP5617671B2 (en) * | 2011-02-08 | 2014-11-05 | アイシン・エィ・ダブリュ株式会社 | Manufacturing method of rotor for electric motor |
| JP2013105961A (en) * | 2011-11-15 | 2013-05-30 | Denso Corp | Ignition coil for internal combustion engine and manufacturing method of the same |
| JP2014064471A (en) * | 2014-01-17 | 2014-04-10 | Nippon Soken Inc | Rotary electric machine |
| JP5796663B2 (en) * | 2014-05-12 | 2015-10-21 | アイシン・エィ・ダブリュ株式会社 | Manufacturing method of rotor for electric motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521428A (en) * | 2008-02-26 | 2009-09-02 | 通用汽车环球科技运作公司 | Electric motor assembly with stator mounted in vehicle powertrain housing and installation method thereof |
| JP2010004647A (en) * | 2008-06-19 | 2010-01-07 | Daikin Ind Ltd | Rotor |
| CN103812282A (en) * | 2012-11-09 | 2014-05-21 | 株式会社三井高科技 | Method for manufacturing laminated iron core |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6754207B2 (en) | 2020-09-09 |
| CN107240994B (en) | 2019-08-30 |
| JP2017184311A (en) | 2017-10-05 |
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