CN107240994B - The manufacturing method of armature - Google Patents
The manufacturing method of armature Download PDFInfo
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- CN107240994B CN107240994B CN201710194080.2A CN201710194080A CN107240994B CN 107240994 B CN107240994 B CN 107240994B CN 201710194080 A CN201710194080 A CN 201710194080A CN 107240994 B CN107240994 B CN 107240994B
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- 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 manufacturing method of armature that versatility is high, can improve the shape defect of armature, can eliminate the various problems because of caused by shape defect, no matter the type of the steel plate of laminate core can be constituted to apply.The permanent magnet that unmagnetized direction has negative coefficient of thermal expansion is respectively inserted into the multiple magnet insertion holes (61) for being formed in laminate core (6), later, 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 manufacturing method of the armature, it heats laminate core (6), when laminate core (6) is in specific temperature range, resin material is injected to specific magnet insertion holes (61), later, when laminate core (6) are in other temperature ranges different from specific temperature range, resin material is injected to other magnet insertion holes (61).
Description
Technical field
The present invention relates to the manufacturing methods of the armature with permanent magnet.
Background technique
The rotor of known IPM motor (Interior Permanent Magnet Motor, inner permanent magnetic motor) is in this way
, there is the armature for the construction for having permanent magnet in the embedment of the inside of laminate core.IPM motor is buried due to the inside in rotor core
Entering has permanent magnet, and therefore, magnet will not be flown out due to centrifugal force in motor rotation, mechanical aspects it is highly-safe.In addition,
IPM motor obtains high torque with high efficiency.Therefore, power of the IPM motor as automobile, rolling stock, other industries
Source, it utilizes and rapidly expands in recent years.
In more situation, permanent magnet is inserted respectively into the magnet for being formed in laminate core by the rotor for constituting IPM motor
It is inserted into hole, later, resin is injected to magnet insertion holes, resin solidification is made in magnet insertion holes, permanent magnet is fixed on stacking
Iron core (patent document 1,2).Patent document 1 describes after the magnet insertion holes that permanent magnet is inserted into laminate core, by layer
Laminated core heating, later, injects resin into magnet insertion holes (the 0021st~0025 section).
In addition, as the permanent magnet being embedded in the rotor for constituting IPM motor, it is known that neodymium (Neodymium) magnet.Neodymium
Magnet due to magnetic flux density height there is very strong magnetic force therefore if neodymium magnet is embedded to rotor, can obtain small-sized, strong
The motor of power.
Known neodymium magnet shows positive coefficient of thermal expansion the direction of magnetization (being 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 be expanded in the direction of magnetization, and be shunk in unmagnetized direction.
In addition, laminate core is that chip material is laminated and is constituted, which is that will pass through rolling process with mold
And the sheet metal manufactured (is known as " electromagnetic steel plate " based on its purposes or is known as " silicon steel plate " based on alloying component) punching and obtains
It arrives.The chip material for constituting rotor has circular profile.Profile by the mold that chip material is punched is also circular.However, i.e.
Sheet metal is punched using the mold with circular profile, the profile of chip material can also become ellipse sometimes.That is, after punching
Chip material generates deformation sometimes.
For example, it " is to have as shown in Figure 9 in circular stator core sheet material in periphery that the 0007th section of patent document 5, which describes,
In the case where outer diameter increase in the rolling direction of electromagnetic steel plate, outer diameter reduces in the direction orthogonal with rolling direction；
Conversely, outer diameter reduces in the rolling direction of electromagnetic steel plate in the case where having, outer diameter is in the side orthogonal with rolling direction
To increase.".
In the shell that the laminate core for producing the shape defect because of caused by the deformation of chip material is mounted on to rotating electric machine
When on body, shell can generate deformation.When shell generates deformation, rotating electric machine can lead to the problem of various.In addition, shape will be produced
When being installed on shell to undesirable laminate core shrink fit, gap can be generated in a part between laminate core and shell.
Therefore, the contact area of laminate core and shell becomes smaller.As a result, the fixation of laminate core becomes inadequate, in high load capacity
The fixation of laminate core can yield to the generation torque of rotating electric machine when operating, and laminate core is possible to rotate.
Invention documented by patent document 5 is to solve the above problems, in the shell of rotating electric machine, by the stator core of punching
The position that the position that the outer diameter of sheet material is greater than formal size is abutted is as non-fixed position, by outer diameter and formal ruler
The position that the lesser position of very little difference is abutted is as fixed position.
According to documented by patent document 5 invent, may solve because the shape of laminate core and shell it is inconsistent due to
Caused various problems.However, the shape defect of laminate core does not improve itself.Therefore, according to recorded in patent document 5
Invention, do not solve the problems, such as because of caused by the shape defect of laminate core, for example, because of the gap between rotor and stator
The problem of variation of (air gap) and the torque that generates changes, vibration.
Certainly, by the generation of the shape defect to laminate core inhibit for the purpose of invention be applied.For example,
Patent document 6 discloses the blanking method of non-oriented electromagnetic steel sheet, which is characterized in that according to stretching for non-oriented electromagnetic steel sheet
Long rate controls the roundness of the cutting edge of blanking die.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2014-138533 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2014-220911 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2007-273850 bulletin
Patent document 4: Japanese Unexamined Patent Publication 2012-152069 bulletin
Patent document 5: Japanese Unexamined Patent Publication 2009-112096 bulletin
Patent document 6: Japanese Unexamined Patent Publication 10-24333 bulletin
Summary 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 rotating electric machine is also eliminated
It is dynamic.However, it be 4 weight % or less, Al is that 2 weight % are below directionless that although patent document 6, which is disclosed in punching containing Si,
Property electromagnetic steel plate in the case where the control formula of the roundness of the cutting edge of blanking die that is applicable in, but disclosing other situations
Under control formula.Therefore, invention documented by patent document 6, which has a problem in that, is being punched the non-oriented magnetic steel
It can be applicable in the case where plate, but cannot be applicable in the other cases.That is, coming in the steel plate being punched other than the electromagnetic steel plate
In the case where manufacturing chip material, invention documented by patent document 6 cannot eliminate the deformation of chip material.
Therefore, invention documented by patent document 6 has a problem in that for will be by the steel plate other than the electromagnetic steel plate
The chip material of composition is laminated and the armature of composition, cannot improve shape defect, cannot eliminate various because of caused by shape defect
Problem.
What given this situation the present invention completed, its purpose is to provide a kind of manufacturers of armature that versatility is high
Method 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 type of the steel plate of laminated core is applied.
The solution to the problem
The manufacturing method of armature according to the present invention is inserted into respectively to the multiple magnet insertion holes for being formed in laminate core
There is the permanent magnet of negative coefficient of thermal expansion to inject resin into magnet insertion holes later in unmagnetized direction, make resin in magnet
Insert in the hole solidification, and permanent magnet is fixed on laminate core, wherein by laminate core heating and laminate core is in specific
When temperature range, it is in later in laminate core to the specific magnet insertion holes injection resin among multiple magnet insertion holes
When 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 inject resin.
It is also possible to after being filled with resin to specific magnet insertion holes, cooling laminate core reaches in laminate core
When lower than specific temperature range temperature, resin is injected to other magnet insertion holes.
It is also possible to after being filled with resin to specific magnet insertion holes, heats laminate core, reach in laminate core
When higher than specific temperature range temperature, resin is injected to other magnet insertion holes.
Being also possible to specific magnet insertion holes is one group of magnet insertion holes, in the rolling side of the blank with laminate core
To the direction arrangement at special angle.
It is also possible to when injecting resin to 1 magnet insertion holes among multiple magnet insertion holes every time, change stacking
The temperature of iron core injects resin to other magnet insertion holes later.
It is also possible to inject and set to magnet insertion holes when the temperature of laminate core is in 120 DEG C to 200 DEG C of range
Rouge.
Invention effect
In accordance with the invention it is possible to have permanent magnet 9 and the shape defect of the armature of composition to being embedded in the inside of laminate core 6
It is corrected.As a result, include the armature rotating electric machine in, torque change the problems such as generation be suppressed, electric rotating
The performance of machine improves.
Detailed description of the invention
Fig. 1 is to show armature manufacturing device used in the manufacturing method of armature involved in embodiments of the present invention
The top view of composition.
Fig. 2 is the main view for showing the composition of preheating device included by armature manufacturing device documented by Fig. 1.
Fig. 3 is the main view for showing the composition of resin sealing apparatus included by armature manufacturing device documented by Fig. 1.
Fig. 4 is the composition figure of laminate core involved in embodiments of the present invention, and (a) of Fig. 4 is bowing for laminate core
Depending on (b) of Fig. 4 is the side view of laminate core.
Fig. 5 is the explanation for showing the manufacturing method for the blanket for constituting laminate core involved in embodiments of the present invention
Figure.
Fig. 6 is the explanatory diagram for showing the manufacturing method of armature involved in embodiments of the present invention, is laminate core
Top view.
Fig. 7 is the explanatory diagram for showing the other examples of manufacturing method of armature involved in embodiments of the present invention, is
The top view of laminate core.
Fig. 8 is the explanatory diagram for showing the principle for the deformation for correcting laminate core in embodiments of the present invention, Fig. 8's
(a)~Fig. 8 (d) is the figure that the process of deformation of correction laminate core is shown with time series.
The explanation of appended drawing reference
1: manufacturing device
2: carrying transferring belt
3: preheating device
4: resin sealing apparatus
5: transportation tray
6: laminate core
7: partition
8: resin material
9: permanent magnet
10: blanket
11: blank
31: lower part heating part
32: fixed base
33: lifting unit
34: top heating part
35: side heating part
41: lower die
42: upper mold
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
Specific embodiment
In the following, the manufacturing method of armature involved in embodiments of the present invention is described in detail with reference to the attached drawings.
(manufacturing device)
Fig. 1 is the top view for showing the composition of manufacturing device 1 of armature involved in embodiments of the present invention.Such as Fig. 1
Shown, manufacturing device 1 includes carrying transferring belt 2, preheating device 3 and resin sealing apparatus 4.In addition, manufacturing 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 manufacture in the upstream process (not shown) in the left side of manufacturing device 1 in configuration in Fig. 1
Laminate core 6 be moved to the device of manufacturing device 1.The laminate core 6 for finishing the processing in manufacturing device 1 is handled upside down biography
Band 2 is sent to move out the downstream process (not shown) configured in Fig. 1 on the right side of manufacturing device 1.
The laminate core 6 of manufacturing device 1 is moved to by transfer device (not shown), from carrying transferring belt 2 from upstream process
It is transplanted on preheating device 3.Preheating device 3 is to heat laminate core 6 and be warming up to the temperature of preheating device 3 and 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, downstream process (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: that the lower part for carrying out placing to the transportation tray 5 that placing has laminate core 6 adds
Hot portion 31；And it is fixed on the fixed base 32 of set-up site.Being fixed on fixed base 32 makes on lower part heating part 31
The lifting unit (such as jack) 33 of lower lifting.It is risen in addition, preheating device 3 includes to be located 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 the stacking iron is surrounded from side
The side heating part 35 of the heart 6.The side heating part 35, by two points, is configured to by making the part of segmentation with layer in transverse direction
It is mobile to switch (shown in the arrow of Fig. 2) in the horizontal direction centered on laminated core 6.In addition, each included by the 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 is as shown in Figure 3, comprising: has the transportation tray 5 of laminate core 6 to carry out under placing placing
Mould 41；And the upper mold 42 by placing on laminate core 6.In addition, being clamped with partition between laminate core 6 and upper mold 42
(English: dummy plate) 7.That is, the lower surface of partition 7 is abutted with the upper surface of laminate core 6, the upper surface of partition 7 with it is upper
The lower surface of mould 42 abuts.In addition, partition 7 is a kind of lid, the magnet insertion holes that laminate core 6 is injected into from upper mold 42 are prevented
61 resin material 8 spreads in the upper surface of laminate core 6 and is attached to the upper surface of laminate core 6.Partition 7 is also referred to as backing plate
(caul plate)。
Upper mold 42 includes resin inlet 43 identical with 61 quantity of magnet insertion holes included by laminate core 6.That is,
In upper mold 42 by with magnet insertion holes 61 included by laminate core 6 it is one-to-one in a manner of be configured with resin inlet 43.Respectively
Resin inlet 43 by upper mold 42 up and down.
At the position of partition 7 abutted with the resin inlet 43 of upper mold 42, it is provided with resin inlet 71.It is inserted to magnet
Enter the resin material 8 of the filling of hole 61 under the liquid condition of melting, passes through the resin inlet 43 of upper mold 42, the resin of partition 7
Inlet 71 is injected into magnet insertion holes 61.In addition, inserting permanent magnet in each magnet insertion holes 61 in upstream process
9.The resin material 8 for being injected into magnet insertion holes 61 solidifies in magnet insertion holes 61, and permanent magnet 9 is fixed on magnet insertion holes
In 61.
Plunger 44 is installed in each resin inlet 43.Plunger 44 is that simultaneously quilt will be supplied from resin feedway (not shown)
The component that the resin material 8 being maintained in resin inlet 43 is squeezed out to magnet insertion holes 61.Plunger 44 is by driving (not shown)
Device driving.In addition, multiple plungers 44 (driver (not shown) for driving the plunger 44) included by resin sealing apparatus 4 are counted
Calculation machine 100 controls, and is acted together or individually or to each group.Therefore, resin sealing apparatus 4 can be by resin material
8 together injection be filled into all magnet insertion holes 61 included by laminate core 6.In addition, resin sealing apparatus 4 can also be to layer
All magnet insertion holes 61 included by laminated core 6, which respectively individually inject resin material 8 in different moments, fills.In addition,
All magnet insertion holes 61 included by laminate core 6 can also be divided into multiple groups by resin sealing apparatus 4, by group when different
It carves to inject resin material 8 and fill.
(laminate core)
Next, illustrating the composition and construction of laminate core 6.Laminate core 6 be constitute rotating electric machine armature (such as
The rotor of IPM motor) element, as shown in (b) of Fig. 4, be by multiple blankets 10 be laminated and constitute.In addition, such as Fig. 4
(a) shown in, 16 magnet insertion holes 61 are formed on laminate core 6.Magnet insertion holes 61 are being with the center of laminate core 6
It is 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 is passed through in being centrally formed with for laminate core 6
Logical axis hole 62.The rotary shaft embedded with rotating electric machine (not shown) is inserted in axis hole 62.
The blanket 10 of laminate core 6 is constituted as shown in figure 5, being to be punched and formed from the blank 11 of band plate-like.Blank 11
Not shown roll mill manufacture, in the form of the coiled material for being wound as web-like, is supplied to the manufacturing process of blanket 10.Then,
Blank 11 is pulled out from coiled material (not shown), in Fig. 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, later, blank 11 is shifted into the 2nd process.In the 2nd process, rushed from blank 11
Axis hole 62 is determined, later, blank 11 is shifted into the 3rd process.In the 3rd process, it is punched out outer ring 63 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 longitudinal 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, makes direction consistent in such a way that the rolling direction of each blanket 10 is towards the same direction and be laminated.That is, scheming
In 4 (a), put as being located at left and right directions of the blanket 10 of top layer of laminate core 6 in rolling direction for (a) of Fig. 4
In the case where setting, placed as constituting left and right directions of all blankets 10 of laminate core 6 in rolling direction for (a) of Fig. 4.
(the 1st embodiment)
Next, illustrating the manufacturing method of armature involved in the 1st embodiment of the invention referring to Fig. 6.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, will be each
Magnet insertion holes 61 distinguish.
It is 2 groups by 16 magnet insertion holes 61a, 61b ... 61p points in the 1st embodiment.That is, magnet insertion holes
61a ... 61d and magnet insertion holes 61i ... 61l is the 1st group.Moreover, magnet insertion holes 61e ... 61h and magnet insertion holes
61m ... 61p is the 2nd group.As shown in fig. 6, belonging to the 1st group of magnet insertion holes 61 in the blanket 10 with composition laminate core 6
Rolling direction it is parallel direction arrangement.Belong to the 2nd group of the rolling in the blanket 10 with composition laminate core 6 of magnet insertion holes 61
The orthogonal direction arrangement in direction processed.
In the 1st embodiment, firstly, laminate core 6 is heated up to 180 DEG C or more in preheating device 3.Then, will
Laminate core 6 is moved to resin sealing apparatus 4, measures the temperature of laminate core 6.The means of temperature for measuring laminate core 6 are
Arbitrarily.The temperature that contact as thermocouple can be equipped in the lower die 41 or upper mold 42 of resin sealing apparatus 4 passes
Sensor can also be equipped with temperature sensing contactless as infrared radiation thermometer around resin sealing apparatus 4
Device.Moreover, after the temperature of laminate core 6 reaches 180 DEG C, to belong to the 1st group magnet insertion holes 61 (61a ... 61d and
61i ... 61l) injection resin 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
6 natural cooling of laminated core.Then, after the temperature of laminate core 6 reaches 170 DEG C, to the magnet insertion holes 61 for belonging to the 2nd group
(61e ... 61h and 61m ... 61p) injects resin material 8.Note of the resin material 8 to the magnet insertion holes 61 for belonging to the 2nd group
After the completion of entering, make 6 natural cooling of laminate core.Laminate core 6 is cooled and to be injected into the resin material 8 of magnet insertion holes 61 solid
After change, laminate core 6 is moved out from resin sealing apparatus 4.
In addition, the heating target of the laminate core 6 of preheating device 3 is: being injected to the magnet insertion holes 61 for belonging to the 1st group
In the temperature (180 DEG C) of resin material 8, in addition laminate core 6 to be transported to the phase of resin sealing apparatus 4 from preheating device 3
Between the temperature that generates decline the value as surplus.That is, being warmed to the feelings of 180+ α DEG C in laminate core 6 in preheating device 3
Under condition, α is equivalent to the temperature decline for being carried to laminate core 6 from preheating device 3 and generating during resin sealing apparatus 4.
(the 2nd embodiment)
The manufacturing method of armature according to the present invention is not limited to 16 magnet insertion holes 61 being divided into 2 groups, and not
Resin material 8 is injected to each group under the conditions of same temperature.16 magnet insertion holes 61 can also be divided into 3 groups or more, and
Resin material 8 is injected to each group under the conditions of different temperature.Therefore, in the 2nd embodiment, as shown in fig. 7, by 16 magnets
Insertion hole 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 to 180 DEG C or more in preheating device 3.Later, laminate core 6 is moved to tree
Rouge sealing device 4 measures the temperature of laminate core 6.After the temperature of laminate core 6 reaches 180 DEG C, to the magnet for belonging to the 1st group
It is inserted into hole 61 (61b, 61c, 61j, 61k) and injects resin material 8.Note of the resin material 8 to the magnet insertion holes 61 for belonging to the 1st group
After the completion of entering, make 6 natural cooling of laminate core.Then, after the temperature of laminate core 6 reaches 160 DEG C, to the magnetic for belonging to the 2nd group
Body is inserted into hole 61 (61d, 61e, 61h, 61i, 61l, 61m, 61p, 61a) and injects resin material 8.Resin material 8 is to belonging to the 2nd group
Magnet insertion holes 61 injection after the completion of, make 6 natural cooling of laminate core.Then, the temperature of laminate core 6 reaches 140 DEG C
Afterwards, resin material 8 is injected to the magnet insertion holes 61 (61f, 61g, 61n, 61o) for belonging to the 3rd group.Laminate core 6 it is cooled and
After being injected into the solidification of resin material 8 of magnet insertion holes 61, laminate core 6 is moved out from resin sealing apparatus 4.In addition, pre-
The heating target of laminate core 6 in thermal 3 is: in the temperature for injecting resin material 8 to the magnet insertion holes 61 for belonging to the 1st group
It spends on (180 DEG C), in addition at a temperature of being generated during laminate core 6 is transported to resin sealing apparatus 4 from preheating device 3
Value as surplus drops.
(correction of shape defect)
Finally, illustrating the shape for correcting laminate core 6 using method involved in the 1st and the 2nd embodiment referring to Fig. 8
The undesirable principle of shape.(a) of Fig. 8 is the vertical view for showing the shape of magnet insertion holes 61 and permanent magnet 9 of the laminate core 6 of room temperature
Figure.Permanent magnet 9 is neodymium magnet, and it is different according to direction to magnetize easy performance.In each figure of Fig. 8, X-axis shows permanent magnet 9
Magnetize (easy) axis, Y-axis shows the unmagnetized axis of permanent magnet 9.That is, permanent magnet 9 is consistent and non-magnetic with X-axis with magnetization (easy) axis
Change axis and the consistent mode of Y-axis configures 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 axis (Y-axis) direction.Therefore, if permanent magnet 9 is heated,
Then permanent magnet 9 is expanded in X-direction, is shunk in Y direction.
(b) of Fig. 8 is the shape for showing magnet insertion holes 61 and permanent magnet 9 in the case where heating laminate core 6
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) shrinks (size reduction) in Y direction.As a result, the gap between magnet insertion holes 61 and permanent magnet 9
Expand.In particular, the gap enlargement of Y direction.
In this way, if injecting resin material 8 to magnet insertion holes 61, then such as Fig. 8 in the state of heating laminate core 6
(c) shown in, resin material 8 can be filled in the gap between magnet insertion holes 61 and permanent magnet 9.
After being filled with resin material 8 to magnet insertion holes 61, if laminate core 6 is cooling, make the temperature of laminate core 6
Room temperature is reverted to, then the resin material 8 for being filled into the gap between magnet insertion holes 61 and permanent magnet 9 can solidify.At this point, magnet
It is inserted into hole 61 and shrinks (size reduction) in X-axis and Y direction.Permanent magnet 9 shrinks (size reduction) in X-direction, in Y direction
It expands (dimension enlargement).That is, shape shown in (a) of magnet insertion holes 61 and the Fig. 8 to be reverted to of permanent magnet 9.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, magnet insert
The size for entering the Y direction in hole 61 will not restore original size (size shown in (a) of Fig. 8).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 (d) of Fig. 8, heavy line with the arrow shows the pressing force for acting on magnet insertion holes 61 at this time.
In addition, the laminate core 6 of state shown in (a) of the state relative to Fig. 8 shown in (d) of Fig. 8 is in Y direction
The difference of size changes according to the temperature of the laminate core 6 when injecting resin material 8 to laminate core 6.If injecting resin
The temperature of laminate core 6 when material 8 is to compare high temperature, then the magnet insertion holes 61 and permanent magnetism of state shown in (b) of Fig. 8
Gap between body 9 will increase.Therefore, the amount for the resin material 8 being injected into magnet insertion holes 61 will increase.Moreover, in Fig. 8
(d) shown in the state of, be filled into the resin material 8 in the gap of the Y direction between magnet insertion holes 61 and permanent magnet 9
Thickness will increase.As a result, magnet insertion holes 61 and laminate core 6 substantially expand in Y direction.
On the other hand, if the temperature of the laminate core 6 when injection resin material 8 is low temperature, the case where with high temperature
It compares, the gap between the magnet insertion holes 61 and permanent magnet 9 of state shown in (b) of Fig. 8 can reduce.Therefore, it is injected into magnetic
The amount of resin material 8 in body insertion hole 61 can reduce.Moreover, being filled into magnet insertion in the state that (d) of Fig. 8 is shown
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.
In this way, the temperature of the laminate core 6 when by injection resin material 8 is increased and decreased, infused so as to increase and decrease
Extensive magnitude of the magnet insertion holes 61 and laminate core 6 that the resin material 8 entered generates 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 substantially to expand Y direction
Position magnet insertion holes 61, greatly improve the temperature of laminate core 6 and inject resin material 8, for magnetic in addition to this
Body is inserted into hole 61, keeps the temperature of laminate core 6 relatively low and injects resin material 8, so as to correct the shape of laminate core 6
Shape.
In above-mentioned 1st embodiment, belong to the ruler of the 1st group of the Y direction after resin material 8 solidifies of magnet insertion holes 61
It is very little to expand biglyyer.Belong to the 2nd group of magnet insertion holes 61 resin material 8 solidify after Y direction size expansion
Amount is small compared with belonging to the 1st group of magnet insertion holes 61.In above-mentioned 2nd embodiment, and belong to the 1st group magnet insertion
The size of Y direction after resin material 8 solidifies of hole 61 expands also biglyyer.Belong to the tree of the 2nd group of magnet insertion holes 61
Rouge 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
The resin material 8 of the magnet insertion holes 61 of group solidify after Y direction size extensive magnitude, it is slotting with the magnet that belongs to the 2nd group
Enter hole 61 compared to small.That is, resin material 8 solidify after magnet insertion holes 61 Y direction dimension enlargement amount are as follows: the 1st group is most
Greatly, take second place for the 2nd group, the 3rd group minimum.
More than, as described, embodiment according to the present invention can be corrected in the embedment of the inside of laminate core 6
The shape defect of permanent magnet 9 and the armature of composition.As a result, torque variation etc. is asked in the rotating electric machine for including the armature
The generation of topic is suppressed, and the performance of rotating electric machine improves.In addition, the manufacturing method of armature involved in above embodiment can
No matter constituting the type of the steel plate of laminate core to apply.
However, technical scope of the invention is not limited to above embodiment.Present invention skill documented by claims
In art thought, it can be implemented with Free Transform, application or improvement.
For example, the unit of the temperature change of the laminate core 6 when injecting resin material 8 is not limited to " magnet insertion holes 61
Group ".The temperature of laminate core 6 can also be changed for each magnet insertion holes 61 and injects resin material 8.In addition, constituting
The number of the magnet insertion holes 61 of " group " is also arbitrary.
In addition, in the first embodiment described above, as " rolling direction of the blank material relative to laminate core 6 is at 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, being not limited to " parallel direction ", " orthogonal direction " " at the direction of special angle ".It can arbitrarily select
Select " specific angle ".
In the above-described embodiment, it shows in manufacturing device 1 with resin sealing apparatus 4 independently including preheating device
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 heat source can heat laminate core 6 in the state that laminate core 6 is installed on resin sealing apparatus 4.
In the above-described embodiment, as the heat source for heating laminate core 6, showing includes electricity in preheating device 3
The example of heater.However, heat source included by preheating device 3 and preheating device 3 and resin sealing apparatus 4 is integrated
In the case that ground is constituted, heat source included by resin sealing apparatus 4 is not limited to electric heater.The heat source also can use induction and add
Heat or hot wind heat laminate core 6.Alternatively, the heat source can also combine the heating that electric heater carried out, induction heating,
In the heating carried out with hot wind it is any two or more, laminate core 6 is heated.
In the above-described embodiment, it shows in resin sealing apparatus 4, to magnet on one side cool down laminate core 6 while
It is inserted into the example that resin material 8 is injected in hole 61.That is, showing following example: being in specific temperature range in laminate core 6
When, after being filled with resin material 8 to specific magnet insertion holes 61, cooling laminate core 6 is in laminate core 6 than institute
When stating low other temperature ranges of specific temperature range, resin material 8 is injected to other magnet insertion holes 61.However, this hair
The range of bright technology is without being limited thereto.Laminate core 6 can also be heated on one side, inject resin material to magnet insertion holes 61 on one side
8.Such as in the case where resin sealing apparatus 4 includes the heat source for heating laminate core 6, it can also be in laminate core 6
When specific temperature range, after injecting resin material 8 to specific 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, resinous wood is injected to other 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 magnet insertion holes 61 inject resin material 8, when the temperature of laminate core 6 is 170 DEG C, to the magnet for belonging to the 2nd group
It is inserted into hole 61 and injects resin material 8.In this case, it is equivalent to " specific temperature range " for 180 DEG C, 170 DEG C are 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,
Resin material 8 is injected to the 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
Magnet insertion holes 61 inject resin material 8, laminate core 6 temperature be 140 DEG C when, to belong to the 3rd group magnet be inserted into
Resin material 8 is injected in hole 61.In this case, it is equivalent to " specific temperature range " for 180 DEG C, 160 DEG C are equivalent to " specific temperature
Spend range " or " other temperature ranges ", 140 DEG C are equivalent to " other temperature ranges ".However, " specific temperature range " and
" other temperature ranges " is without being limited thereto." specific temperature range " and " other temperature ranges " arbitrarily can be selected and be 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, it is injected into the mobility decline of the resin material 8 of magnet insertion holes 61, therefore be 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 range.
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 like that with Accurate Points, but the present invention is not limited to set " temperature range " with Accurate Points." temperature
Degree range " can be set with the upper limit or lower limit, can also be set with upper and lower bound.
In the above-described embodiment, the concrete example as " 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.The present invention is extensive
Suitable for manufacturing the electricity for including " in permanent magnet of the unmagnetized direction with negative coefficient of thermal expansion " that is existing or will appear in the future
Pivot.
In the above-described embodiment, as the concrete example of armature, the rotor of IPM motor is illustrated, but has been applicable in the present invention
Armature be not limited to the rotor of IPM motor.Being applicable in armature of the invention can be stator, be also possible to other than IPM motor
Rotor included by motor or stator.It is not limited to constitute the armature of motor in addition, being applicable in armature of the invention.The present invention
It is also applied for the armature that manufacture constitutes generator.
Claims (8)
1. a kind of manufacturing method of armature,
Being respectively inserted into unmagnetized direction to the multiple magnet insertion holes for being formed in laminate core has negative coefficient of thermal expansion forever
Magnet injects resin into the magnet insertion holes later, solidifies resin 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, be inserted into multiple magnets
Specific magnet insertion holes among hole inject the resin,
Later, when the laminate core is in other temperature ranges different from the specific temperature range, to multiple institutes
It states other magnet insertion holes except the specific magnet insertion holes among magnet insertion holes and injects the resin.
2. the manufacturing method of armature as described in claim 1, which is characterized in that
After being filled with the resin to the specific magnet insertion holes, the cooling laminate core, 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 manufacturing method of armature as described in claim 1, which is characterized in that
After being filled with the resin 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 manufacturing method of armature as described in any one of claim 1 to 3, which is characterized in that
The specific magnet insertion holes are one group of magnet insertion holes, in the rolling direction Cheng Te of the blank with the laminate core
Determine the direction arrangement of angle.
5. the manufacturing method of armature as described in any one of claim 1 to 3, which is characterized in that
When injecting the resin to 1 magnet insertion holes among multiple magnet insertion holes every time, the stacking is changed
The temperature of iron core injects the resin to other magnet insertion holes later.
6. the manufacturing method of armature as described in any one of claim 1 to 3, which is characterized in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of range, Xiang Suoshu magnet insertion holes inject the tree
Rouge.
7. the manufacturing method of armature as claimed in claim 4, which is characterized in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of range, Xiang Suoshu magnet insertion holes inject the tree
Rouge.
8. the manufacturing method of armature as claimed in claim 5, which is characterized in that
When the temperature of the laminate core is in 120 DEG C to 200 DEG C of range, Xiang Suoshu magnet insertion holes inject the tree
Rouge.
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| 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 CN107240994A (en) | 2017-10-10 |
| CN107240994B true CN107240994B (en) | 2019-08-30 |
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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 |
|---|---|
| CN107240994A (en) | 2017-10-10 |
| JP6754207B2 (en) | 2020-09-09 |
| JP2017184311A (en) | 2017-10-05 |
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