CN111835165A - Method and apparatus for manufacturing motor - Google Patents
Method and apparatus for manufacturing motor Download PDFInfo
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- CN111835165A CN111835165A CN202010283894.5A CN202010283894A CN111835165A CN 111835165 A CN111835165 A CN 111835165A CN 202010283894 A CN202010283894 A CN 202010283894A CN 111835165 A CN111835165 A CN 111835165A
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- Prior art keywords
- coil
- wedge
- slot
- motor
- lubricant
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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
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
Abstract
Provided are a method and an apparatus for manufacturing a motor, which can easily insert a coil and a wedge into a slot of a stator core. A method of manufacturing a motor, the motor having: a stator in which coils are wound around a plurality of teeth that extend radially inward from an annular core back and are arranged in a circumferential direction; and a rotor that is positioned radially inward of the stator and is rotatable about a central axis with respect to the stator. The manufacturing method of the motor comprises the following steps: a lubricant coating step (S1) for coating the surface of the coil with oil as a lubricant; a coil insertion step (S4) of inserting a coil, the surface of which is coated with oil, radially into a slot between teeth adjacent in the circumferential direction, from an opening located radially inside the slot; and a wedge insertion step (S5) for inserting a wedge in the axial direction toward the opening portion side of the groove into which the oil-coated coil is inserted.
Description
Technical Field
The present invention relates to a method and an apparatus for manufacturing a motor.
Background
The following motor manufacturing method is known: after the coils are wound around the teeth of the stator core of the motor, the motor is manufactured by inserting wedges into the opening side in the slots.
As a method of inserting a coil into the slots of the stator core, for example, a coil insertion method disclosed in patent document 1 is known.
In the coil insertion method disclosed in patent document 1, the distributed winding coils are sandwiched and held between 2 insertion portions of a coil holder, and the coils are inserted into slots of a stator core in a state where the coil holder faces the slots. That is, in the coil inserting method, the coil is inserted into the slot in the radial direction while the coil is held in an aligned state by the coil holder.
As described above, after the coil is inserted into the slot of the stator core, the wedge is inserted into the opening portion side inside the slot in the axial direction of the stator core. Thereby, the coil can be held in the slot.
Patent document 1: japanese laid-open patent publication No. 2017-046373
However, in order to increase the output of the motor, it is necessary to accommodate a large number of coils in the slots of the stator core. However, when the coils are inserted into the slots of the stator core as in patent document 1, the coils may not be smoothly inserted into the slots due to friction between the coils and the inner surfaces of the slots.
In addition, in a state where the coil is inserted into the slot of the stator core as in patent document 1, there is almost no space on the opening side for inserting the wedge into the slot. Therefore, in a state where the coil is inserted into the slot, workability of insertion of the wedge is not good due to an influence of friction between the wedge and the umbrella portion, which is generated when the wedge is inserted into the opening portion side of the slot in the axial direction.
Disclosure of Invention
The invention aims to provide a method for manufacturing a motor, which can easily insert a coil and a wedge into a slot of a stator core.
One embodiment of the present invention is a method for manufacturing a motor including: a stator in which coils are wound around a plurality of teeth extending radially inward from a core back and arranged in a circumferential direction; and a rotor that is positioned radially inward of the stator and is rotatable about a center axis with respect to the stator, wherein the method of manufacturing the motor includes: a lubricant coating step of coating a lubricant on the surface of the coil; a coil insertion step of inserting a coil, the surface of which is coated with a lubricant, into a slot located between teeth adjacent to each other in the circumferential direction, from an opening portion located on a radially inner side of the slot in the radial direction; and a wedge insertion step of axially inserting a wedge into the opening portion side of the slot into which the coil is inserted.
One embodiment of the present invention is a manufacturing apparatus of a motor, including: a stator in which coils are wound around a plurality of teeth extending radially inward from a core back and arranged in a circumferential direction; and a rotor that is positioned radially inward of the stator and is rotatable about a center axis with respect to the stator, wherein the motor manufacturing apparatus includes: a lubricant coating portion that coats a lubricant on a surface of the coil; a coil insertion portion that inserts a coil, the surface of which is coated with a lubricant, into a slot located between teeth adjacent in the circumferential direction, from an opening portion located radially inside the slot; and a wedge insertion portion that axially inserts a wedge into an opening portion side of the slot into which the coil is inserted.
According to the method for manufacturing a motor of one embodiment of the present invention, it is possible to provide a method for manufacturing a motor in which a coil and a wedge can be easily inserted into a slot of a stator core.
Drawings
Fig. 1 is a diagram showing a schematic configuration of a motor manufacturing apparatus for performing a motor manufacturing method according to an embodiment.
Fig. 2 is a sectional view showing a schematic structure of the motor.
Fig. 3 is a view of the stator core as viewed from the axial direction.
Fig. 4 is a partially enlarged view of the stator.
Fig. 5 is a view schematically showing a state where the coil bundle is inserted into the slot from the radially inner side of the stator core.
Fig. 6 is a diagram schematically showing a state where the coil bundle is inserted into the slot by the coil inserting device.
Fig. 7 is a diagram schematically showing a state where the coil bundle is inserted into the slot by the coil inserting device.
Fig. 8 is a sectional view showing a state where the coil bundle is inserted into the slot by the coil insertion device.
Fig. 9 is a sectional view showing a state where a wedge is inserted into a groove by a wedge insertion device.
Fig. 10 is a sectional view showing a state where a wedge is inserted into a groove by a wedge insertion device.
Fig. 11 is a sectional view showing a state where a wedge is inserted into a groove by a wedge insertion device.
Fig. 12 is a flowchart illustrating a motor manufacturing method of the present embodiment.
Description of the reference symbols
1: a motor manufacturing device; 2: a coil winding device (coil winding section); 3: a coil insertion device; 4: a wedge insertion device; 5: an oil coating device (lubricant coating section); 31: a coil holding portion; 32. 33: a coil insertion portion; 32a, 33 a: inserting a coil into the slot; 35: a blade; 36: a blade moving mechanism; 41: a wedge holding section; 41 a: a wedge receiving groove; 42: a wedge insertion portion; 100: a motor; 101: a stator; 102: a stator core; 102 a: a groove; 102 b: an opening part; 103: a coil; 104: a wedge block; 105: the back of the iron core; 106: teeth; 106 a: an umbrella part; 110: a rotor; p: a central axis; x: a coil; xa: a coil bundle; y: a wedge block; s: and inserting into the space.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated. The dimensions of the structural members in the drawings do not faithfully represent the actual dimensions of the structural members, the dimensional ratios of the structural members, and the like.
In the following description, a direction parallel to the central axis of the stator is referred to as an "axial direction", a direction perpendicular to the central axis is referred to as a "radial direction", and a direction along an arc centered on the central axis is referred to as a "circumferential direction". In the radial direction, the side of the central axis is referred to as "radially inner" with respect to the target structure, and the side opposite to the central axis is referred to as "radially outer" with respect to the target structure. However, the orientation of the motor according to the present invention when used is not intended to be limited by the definition of the direction.
In the following description, expressions such as "fixed", "connected", and "attached" (hereinafter, referred to as "fixed" or the like) include not only a case where components are directly fixed to each other or the like, but also a case where the components are fixed via other components or the like. In other words, in the following description, expressions such as fixing include meanings such as direct and indirect fixing of members.
(Motor manufacturing apparatus)
Fig. 1 is a diagram showing a schematic configuration of a motor manufacturing apparatus 1 for performing a motor manufacturing method according to an embodiment of the present invention. In the motor manufacturing apparatus 1, the coil X is inserted in a wound state from the radial inside of the stator core 102 of the motor 100 into the slot 102a of the stator core 102.
First, the structure of the motor 100 will be briefly described. Fig. 2 is a sectional view showing a schematic configuration of the motor 100.
As shown in fig. 2, the motor 100 has a stator 101 and a rotor 110. The stator 101 is cylindrical. The rotor 110 has a cylindrical shape. The rotor 110 is rotatable about the central axis P radially inside the stator 101. The rotor 110 has the same structure as the conventional one, and therefore, the description thereof is omitted.
Fig. 3 is a view of the stator core 102 of the motor 100 as viewed from the axial direction. Fig. 4 is a partially enlarged view of the stator 101.
As shown in fig. 2 and 4, the stator 101 includes a stator core 102 and coils 103 inserted into a plurality of slots 102a of the stator core 102. As shown in fig. 3, stator core 102 has an annular core back 105 and a plurality of teeth 106 extending radially inward of core back 105 and arranged in the circumferential direction. The slots 102a are located between circumferentially adjacent teeth 106 of the stator core 102. The opening 102b of the groove 102a is located between the leading end portions of the circumferentially adjacent teeth 106. That is, the opening 102b of the slot 102a is located radially inward of the stator core 102.
As shown in fig. 4, each tooth 106 has a pair of umbrella portions 106a at the tip end thereof, which extend to one side in the circumferential direction and the other side in the circumferential direction, respectively. The opening 102b of the groove 102a is located between the umbrella portions 106a of the circumferentially adjacent teeth 106. That is, the opening 102b of the slot 102a is located radially inward of the stator core 102.
A wedge 104 is inserted into the opening 102b side of the groove 102 a. The wedge 104 is located radially inward of the coil 103 inserted into the groove 102a and radially outward of the umbrella portion 106a of the tooth 106. That is, the wedge 104 is positioned between the coil 103 and the umbrella portion 106a of the tooth 106 in the groove 102 a. In the present embodiment, the wedge 104 is a resin member having a C-shaped cross section and long in the axial direction of the stator core 102.
In the present embodiment, the motor 100 is a so-called inner rotor type motor in which a rotor 110 is disposed in a cylindrical stator 101 so as to be rotatable about a central axis P.
As shown in fig. 1, the motor manufacturing apparatus 1 includes a coil winding apparatus 2, a coil insertion apparatus 3, a wedge insertion apparatus 4, and an oil coating apparatus 5.
The coil winding device 2 winds the coil X to form a coil bundle Xa. Specifically, the coil winding device 2 winds a plurality of coils X in a parallel arrangement around a winding member 21 that rotates about a central axis Q to form an annular coil bundle Xa. In fig. 1, the rotation direction of the winding member 21 is indicated by a solid arrow. The coil winding device 2 functions as a coil winding portion.
As described above, in the coil winding device 2, the plurality of coils X are wound in a parallel state, so that the coils X can be efficiently wound and the coils X can be prevented from crossing each other.
The oil is applied to the surface of the coil X wound by the coil winding device 2 by the oil application device 5. The oil applied to the surface of the coil X is, for example, mineral oil, synthetic oil, or the like. In the present embodiment, the oil applied to the surface of the coil X functions as a lubricant for reducing the friction coefficient of the surface of the coil X. The lubricant applied to the surface of the coil X may be a material other than oil as long as it can reduce the friction coefficient of the surface of the coil X.
The oil coating device 5 can pass the coil X therethrough, and although not particularly shown, the oil coating device 5 has an oil coating portion that coats the coil X passing therethrough with oil. The oil coating portion may be, for example, a reservoir portion in which oil is stored, or may be a sponge or the like impregnated with oil. The oil application device 5 functions as a lubricant application section.
The coil inserting device 3 inserts the coil bundle Xa formed by the coil winding device 2 into the slot 102a from the radially inner side of the stator core 102. Fig. 5 schematically shows a state where the coil bundle Xa is inserted into the slot 102a from the radially inner side of the stator core 102. As shown in fig. 5, the coil inserting apparatus 3 inserts the tubular coil bundle Xa into the 2 slots 102a from the inside in the radial direction of the stator core 102 in a state where the coil bundle Xa spans over the plurality of teeth 106. That is, the coil X is wound around the stator core 102 in a distributed winding manner. In fig. 5, the insertion direction of the coil bundle Xa with respect to the stator core 102 is indicated by an open arrow.
Fig. 6 and 7 are views of the coil insertion device 3 located radially inward of the stator core 102 as viewed from the axial direction. In detail, fig. 6 and 7 are views schematically showing a state where the coil bundle Xa is inserted into the slot 102a by the coil inserting device 3.
Fig. 8 is a cross-sectional view showing a state where the coil bundle Xa is inserted into the slot 102a by the coil inserting apparatus 3. Fig. 9 to 11 are sectional views showing the state where the wedge Y is inserted into the groove 102a by the wedge insertion device 4.
The coil insertion device 3 includes a coil holding portion 31, a plurality of blades 35, and a blade moving mechanism 36. The blade moving mechanism 36 is illustrated only in fig. 1, and is not illustrated in fig. 6 and 7.
The coil holding portion 31 holds the coil bundle Xa composed of the wound coils X. In the present embodiment, as shown in fig. 6 and 7, the coil holding portion 31 has a pair of coil insertion portions 32 and 33. Since the pair of coil insertion portions 32 and 33 have the same configuration, only the coil insertion portion 32 will be described below.
The coil insertion portion 32 is a rectangular parallelepiped member. The coil insertion portion 32 has a pair of coil insertion grooves 32a that are open on one surface and extend in the longitudinal direction of the coil insertion portion 32. The pair of coil insertion grooves 32a extend from one end portion in the longitudinal direction to the other end portion in the longitudinal direction in the coil insertion portion 32. The pair of coil insertion grooves 32a can receive the coil bundle Xa. The coil bundle Xa is held by the coil insertion portion 32 by receiving a part of the coil bundle Xa in each coil insertion groove 32 a. Similarly, the coil insertion portion 33 also has a pair of coil insertion grooves 33 a.
In the present embodiment, the coil bundle Xa is located across the pair of coil insertion portions 32 and 33. That is, the coil bundle Xa is located in the coil insertion groove 32a of the one coil insertion portion 32 and also located in the insertion groove 33a of the other coil insertion portion 33. The height direction of the tubular coil bundle Xa partially housed in the coil insertion grooves 32a, 33a coincides with the groove depth direction of the coil insertion grooves 32a, 33 a. The coil bundle Xa is held by a pair of coil insertion portions 32 and 33. That is, the coils X constituting the coil bundle Xa are held by the coil holding portion 31. Although not particularly shown, the coil insertion portions 32 and 33 have a mechanism for preventing the coil bundle Xa from coming out of the coil insertion grooves 32a and 33 a.
Each of the plurality of blades 35 is a rectangular plate-like member that is long in one direction. The plurality of blades 35 have a longer dimension than the coil insertion portions 32 and 33. The dimension of the plurality of blades 35 in the short direction is smaller than the dimension of the coil insertion grooves 32a and 33a of the coil insertion portions 32 and 33 in the groove depth direction. In the present embodiment, the plurality of blades includes 4 blades inserted into the pair of coil insertion grooves 32a of the coil insertion portion 32 and the pair of coil insertion grooves 33a of the coil insertion portion 33.
The plurality of blades 35 are positioned in the pair of coil insertion grooves 32a of the coil insertion portion 32 and the pair of coil insertion grooves 33a of the coil insertion portion 33. The plurality of blades 35 are located on the groove bottom side of the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a. That is, in a state where the coil bundle Xa is accommodated in the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33a, the plurality of blades 35 are positioned on the bottom side of the slot with respect to the coil bundle Xa. Thus, the coil bundle Xa is positioned on the slot opening side with respect to the plurality of blades 35 in a state of being accommodated in the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a.
As described above, since the plurality of blades 35 have a dimension in the longitudinal direction larger than the dimension in the longitudinal direction of the coil insertion portions 32 and 33, the plurality of blades 35 protrude in the longitudinal direction with respect to the coil insertion portions 32 and 33 in a state of being positioned in the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a.
The plurality of blades 35 are movable in the groove depth direction within the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a. Although not particularly shown, the plurality of blades 35 are supported by the coil insertion portions 32 and 33 so as to be movable in the groove depth direction on at least one of the one side in the longitudinal direction and the other side in the longitudinal direction.
The blade moving mechanism 36 moves the plurality of blades 35 in the groove depth direction in the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a. That is, in a state where the coil insertion device 3 is positioned on the radially inner side of the stator core 102, the blade moving mechanism 36 moves the plurality of blades 35 in the radial direction in the coil insertion grooves 32a and the coil insertion grooves 33 a. In fig. 6, the moving direction of the blade 35 is indicated by an open arrow. The blade moving mechanism 36 may have any configuration as long as it is configured to move the plurality of blades 35 in the groove depth direction in the pair of coil insertion grooves 32a and the pair of coil insertion grooves 33 a.
The coil inserting apparatus 3 having the above-described structure is located radially inward of the stator core 102 when the coil bundle Xa is inserted into the slot 102a of the stator core 102. At this time, the coil insertion grooves 32a, 33a of the coil insertion portions 32, 33 are located at positions radially opposed to the slots 102a of the stator core 102.
In a state where the coil inserting device 3 is positioned on the radially inner side of the stator core 102, the plurality of blades 35 are moved radially outward in the coil insertion grooves 32a, 33a, whereby the coil bundle Xa held in the coil insertion grooves 32a, 33a of the pair of coil insertion portions 32, 33 is inserted radially into the slot 102a from the opening portion 102b side of the slot 102 a. This allows the coils X constituting the coil bundle Xa to be inserted into the slots 102a of the stator core 102.
Next, the wedge insertion device 4 will be explained. In a state where the coil X is inserted into the slot 102a of the stator core 102, the wedge insertion device 4 inserts the wedge Y into the opening 102b side in the slot 102 a.
The wedge insertion device 4 has a wedge holding portion 41 and a wedge insertion portion 42.
The wedge holding portion 41 holds the wedge Y and positions the wedge Y at an insertion position into the groove 102 a. The wedge holding portion 41 includes a wedge receiving groove 41a, and the wedge receiving groove 41a receives the wedge Y so as to be movable in the axial direction, and functions as a guide for the wedge Y.
The wedge Y accommodated in the wedge accommodating groove 41a of the wedge holding portion 41 is pushed and moved in the one direction by the wedge insertion portion 42, and the wedge Y is inserted into the opening portion 102b side in the groove 102 a.
When the wedge Y is inserted into the opening 102b side in the groove 102a by the wedge insertion device 4, as shown in fig. 10, the paddle moving mechanism 36 of the coil insertion device 3 moves the paddle 35 in the coil insertion grooves 32a, 33a, and the coil X inserted into the groove 102a is pressed in the radial direction by the paddle 35. Specifically, the paddle 35 is moved radially outward on the opening 102b side of the groove 102a by the paddle moving mechanism 36, and after the coil X in the groove 102a is pressed radially outward, as shown in fig. 9 and 11, the paddle moving mechanism 36 moves the paddle 35 radially inward and the wedge Y is inserted into the opening 102b side in the groove 102a by the wedge insertion device 4 in a state where the coil X is not pressed by the paddle 35. In fig. 8 to 11, the moving direction of the blade 35 is indicated by an open arrow, and the inserting direction of the wedge Y is indicated by a hatched arrow. The state in which the coil X is not pressed by the blade 35 means a state in which the blade 35 is not in contact with the coil X.
This ensures a space for inserting the wedge Y into the groove 102a on the opening 102b side, and therefore the wedge Y can be easily inserted into the groove 102a on the opening 102b side.
The motor manufacturing apparatus 1 of the present embodiment includes: an oil coating device 5 that coats oil as a lubricant on the surface of the coil X; coil insertion portions 32, 33 that insert, for a slot 102a located between circumferentially adjacent teeth 106 of the plurality of teeth 106, a coil X, the surface of which is coated with oil as a lubricant, radially into the slot 102a from an opening portion 102b located radially inside the slot 102 a; and a wedge insertion portion 42 that axially inserts the wedge Y into the opening portion 102b side in the groove 102a into which the coil X coated with oil as a lubricant is inserted.
By applying oil as a lubricant to the surface of the coil X inserted into the groove 102a, friction between the coils X, friction between the coil X and the inner surface of the groove 102a, and friction between the coil X and the wedge Y can be reduced. This makes it possible to easily insert the coil X into the groove 102a in the radial direction from the opening 102b located on the radially inner side of the groove 102a, and also to easily insert the wedge Y into the opening 102b side of the groove 102a into which the coil X is inserted.
The motor manufacturing apparatus 1 further includes a coil winding device 2, and the coil winding device 2 winds the coil X, the surface of which is coated with oil as a lubricant, into a bundle. The coil insertion portions 32 and 33 radially insert the wound coil X into the groove 102a from the opening 102 b.
In this way, even when the coil X is inserted into the groove 102a in the radial direction from the opening 102b of the groove 102a in a state of being wound in a bundle in advance, the coil X can be easily inserted into the groove 102a by applying oil as a lubricant to the surface of the coil X.
The motor manufacturing apparatus 1 further includes a blade 35, and the blade 35 presses the coil X inserted into the slot 102a radially outward in the slot 102 a. The wedge insertion portion 42 axially inserts the wedge Y toward the opening portion 102b side in the groove 102a during a period after the coil X inserted into the groove 102a is pressed radially outward in the groove 102a by the paddle 35 and before the coil X returns to a radial position in the groove 102a before being pressed radially outward.
By pressing the coil X, whose surface friction coefficient is lowered by the lubricant applied to the surface, radially outward in the state of being inserted into the groove 102a, the insertion space S for inserting the wedge Y into the opening 102b side of the groove 102a can be more easily secured.
The lubricant is mineral oil. Thus, when the coil X is inserted into the groove 102a, friction between the coils X, friction between the coil X and the inner surface of the groove 102a, and friction between the coil X and the wedge Y can be reduced more reliably. Therefore, the coil X can be more easily inserted into the groove 102a in the radial direction from the opening portion located on the inner side in the radial direction of the groove 102a, and the wedge Y can be more easily inserted into the opening portion 102b side in the groove 102a into which the coil X is inserted.
(coil winding method)
A coil winding method for winding the coil X around the teeth 106 of the stator core 102 using the coil inserting device 3 and the wedge inserting device 4 having the above-described configurations will be described below with reference to fig. 1, 6, and 7 to 12. Fig. 12 is a flowchart illustrating a coil winding method according to the present embodiment.
First, as step S1, as shown in fig. 1, oil is applied to the surface of the coil X by the oil application device 5. Then, as step S2, the plurality of coils X are wound by the coil winding device 2 to form the coil bundle Xa. In addition, a coil bundle may be formed by 1 coil X.
Next, as shown in fig. 6, in step S3, the coil bundle Xa is positioned radially inward of the stator core 102 while being inserted into the coil insertion grooves 32a and 33a of the coil inserting device 3. At this time, the slot openings of the coil insertion slots 32a and 33a of the coil insertion device 3 are located at positions radially opposed to the openings 102b of the slots 102a of the stator core 102.
Then, as shown in fig. 7 and 8, in step S4, the blade 35 is moved radially outward in the coil insertion grooves 32a, 33a by the blade moving mechanism 36, and the coil bundle Xa is inserted into the groove 102 a.
In step S5, as shown in fig. 9, the coil X inserted into the slot 102a is pressed in the radial direction by the blade 35 on the opening side of the slot 102a, and the wedge Y is inserted into the opening 102b side of the slot 102a by the wedge insertion device 4 in a state where the insertion space S for the wedge Y is formed in the slot 102a at a position radially inward of the coil X.
As shown in fig. 9 and 11, the wedge insertion device 4 axially inserts the wedge Y into the opening 102b side in the groove 102a during a period after the coil X inserted into the groove 102a is pressed radially outward in the groove 102a by the paddle 35 and before the coil X returns to the radial position before being pressed in the groove 102 a.
As shown in fig. 9 to 11, after the coil X is pressed radially outward by the paddle 35, the wedge Y is inserted into the groove 102a, and after the coil X is pressed radially outward again by the paddle 35, the wedge Y is inserted into the groove 102 a. The pressing of the coil X by the paddle 35 and the insertion of the wedge Y are repeated until the wedge Y is inserted into the groove 102 a.
Thus, the wedge Y can be inserted into the groove 102a in a state where the insertion space S on the opening 102b side for inserting the wedge Y into the groove 102a is formed. Therefore, the wedge Y can be inserted into the groove 102a more easily in the axial direction. The radial position is a position in the radial direction before the coil X is pressed radially outward by the blade 35 in the groove 102 a.
When the wedge Y is inserted into the groove 102a, the vane 35 is moved radially inward with respect to the opening 102b of the groove 102 a.
Among the above processes, step S1 is a lubricant coating process, step S2 is a coil winding process, step S3 is a coil inserting process, and step S4 is a wedge inserting process.
The motor manufacturing method of the present embodiment includes the steps of: a lubricant coating step of coating oil as a lubricant on the surface of the coil X; a coil insertion step of inserting a coil X, which has an oil as a lubricant applied to the surface thereof, into a slot 102a located between circumferentially adjacent teeth 106 of the plurality of teeth 106 from an opening 102b located radially inward of the slot 102a in the radial direction; and a wedge insertion step of inserting the wedge Y in the axial direction toward the opening 102b side in the groove 102a into which the coil X coated with oil as a lubricant is inserted.
By applying oil as a lubricant to the surface of the coil X inserted into the groove 102a, friction between the coils X, friction between the coil X and the inner surface of the groove 102a, and friction between the coil X and the wedge Y can be reduced. This makes it possible to easily insert the coil X into the groove 102a in the radial direction from the opening 102b located radially inward of the groove 102a, and to easily insert the wedge Y into the opening 102b side of the groove 102a into which the coil X is inserted.
The motor manufacturing method of the present embodiment further includes a coil winding step of: the coil X coated with oil as a lubricant on the surface is wound into a bundle. In the coil inserting step, the wound coil X is inserted into the groove 102a in the radial direction from the opening 102 b.
In this way, even when the coil X is inserted into the groove 102a in the radial direction from the opening 102b of the groove 102a in a state of being wound in a bundle in advance, the coil X can be easily inserted into the groove 102a by applying oil as a lubricant to the surface of the coil X.
In the wedge insertion step, the wedge Y is axially inserted into the opening 102b side in the groove 102a during a period after the coil X inserted into the groove 102a is pressed radially outward in the groove 102a and before the coil X returns to a radial position before being pressed radially outward in the groove 102 a.
By pressing the coil X, whose surface friction coefficient is lowered by the lubricant applied to the surface, radially outward in the state of being inserted into the groove 102a, the insertion space S for inserting the wedge Y into the opening 102b side of the groove 102a can be more easily secured.
The lubricant is mineral oil. Thus, when the coil X is inserted into the groove 102a, friction between the coils X, friction between the coil X and the inner surface of the groove 102a, and friction between the coil X and the wedge Y can be reduced more reliably. This makes it easier to insert the coil X into the groove 102a in the radial direction from the opening located on the inner side in the radial direction of the groove 102a, and also makes it easier to insert the wedge Y into the opening 102b side in the groove 102a into which the coil X is inserted.
(other embodiments)
The embodiments of the present invention have been described above, but the above embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above embodiment, and can be implemented by appropriately modifying the above embodiment without departing from the scope of the present invention.
In the embodiment, the coil X is inserted into the slot 102a of the stator core 102 by moving the blade 35 in the radial direction in the coil insertion slots 32a, 33a of the coil insertion device 3. However, the blade may have a tapered portion whose length in the short direction increases from one side in the longitudinal direction toward the other side in the longitudinal direction, and the coil in the coil insertion groove may be pushed out in the radial direction by the tapered portion by moving the blade in the longitudinal direction in the coil insertion groove.
In this case, when the wedge is inserted into the slot, the blade having the tapered portion may be moved in the radial direction to press the coil in the slot radially outward, or the blade may be moved in the longitudinal direction to press the coil in the slot radially outward using the tapered portion.
The coil insertion device may have any configuration as long as it can insert the coil from the radially inner side into the slot of the stator core.
In the embodiment, the coil bundle Xa is inserted into the slot 102a by the blade 35 of the coil inserting device 3, and the coil X in the slot 102a is pressed in the radial direction when the wedge Y is inserted into the slot 102 a. However, the member for inserting the coil bundle into the slot and the member for pressing the coil in the slot in the radial direction when the wedge is inserted into the slot may be different members. Further, the coil in the groove may not be radially pressed when the wedge is inserted into the groove.
In the above embodiment, the coil bundle Xa is formed by winding the coil X by the coil winding device 2, and the coil bundle Xa is inserted into the slot 102a of the stator core 102. However, the coil inserted into the slot of the stator core may not be wound.
The present invention can be applied to a method of manufacturing a motor having a stator and a rotor.
Claims (8)
1. A method of manufacturing a motor, the motor having:
a stator in which coils are wound around a plurality of teeth extending radially inward from a core back and arranged in a circumferential direction; and
a rotor located radially inside the stator and rotatable about a central axis with respect to the stator,
wherein the content of the first and second substances,
the manufacturing method of the motor comprises the following steps:
a lubricant coating step of coating a lubricant on the surface of the coil;
a coil insertion step of inserting a coil, the surface of which is coated with a lubricant, into a slot located between teeth adjacent to each other in the circumferential direction, from an opening portion located on a radially inner side of the slot in the radial direction; and
and a wedge insertion step of axially inserting a wedge into an opening portion side of the slot into which the coil is inserted.
2. The method of manufacturing a motor according to claim 1,
the method for manufacturing the motor further comprises the following coil winding step: winding the coil coated with the lubricant on the surface into a bundle,
in the coil inserting step, the wound coil is inserted into the groove in a radial direction from the opening.
3. The method of manufacturing a motor according to claim 1 or 2,
in the wedge inserting step, the wedge is axially inserted into the opening portion side in the pocket during a period after the coil inserted into the pocket is pressed radially outward in the pocket and before the coil returns to a radial position before being pressed radially outward in the pocket.
4. The manufacturing method of a motor according to any one of claims 1 to 3,
the lubricant is mineral oil.
5. An apparatus for manufacturing a motor, the motor comprising:
a stator in which coils are wound around a plurality of teeth extending radially inward from a core back and arranged in a circumferential direction; and
a rotor located radially inside the stator and rotatable about a central axis with respect to the stator,
wherein the content of the first and second substances,
the motor manufacturing apparatus includes:
a lubricant coating portion that coats a lubricant on a surface of the coil;
a coil insertion portion that inserts a coil, the surface of which is coated with a lubricant, into a slot located between teeth adjacent in the circumferential direction, from an opening portion located radially inside the slot; and
and a wedge insertion portion into which a wedge is axially inserted toward an opening portion of the slot into which the coil is inserted.
6. The manufacturing apparatus of a motor according to claim 5,
the manufacturing apparatus of the motor further has a coil winding portion that winds the coil coated with the lubricant on the surface into a bundle,
the coil insertion portion inserts the wound coil into the groove in a radial direction from the opening portion.
7. The manufacturing apparatus of the motor according to claim 5 or 6, wherein,
the motor manufacturing apparatus further includes a press-fitting member that presses the coil inserted into the slot radially outward in the slot,
the wedge insertion portion axially inserts the wedge into the opening portion side in the pocket during a period after the coil inserted into the pocket is pressed radially outward in the pocket by the press-in member and before the coil returns to a radial position in the pocket before being pressed radially outward.
8. The manufacturing apparatus of a motor according to any one of claims 5 to 7,
the lubricant is mineral oil.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-079982 | 2019-04-19 | ||
| JP2019079982A JP2020178465A (en) | 2019-04-19 | 2019-04-19 | Motor manufacturing method and motor manufacturing apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN111835165A true CN111835165A (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010283894.5A Pending CN111835165A (en) | 2019-04-19 | 2020-04-13 | Method and apparatus for manufacturing motor |
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| Country | Link |
|---|---|
| JP (1) | JP2020178465A (en) |
| CN (1) | CN111835165A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116073609B (en) * | 2023-03-30 | 2023-06-06 | 山东瑞博电机有限公司 | Automatic winding combined machining tool for motor stator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5090110A (en) * | 1989-10-13 | 1992-02-25 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing stator for rotating machine |
| JPH0810567B2 (en) * | 1987-01-28 | 1996-01-31 | 古河電気工業株式会社 | Insulated wire with self-lubricating property |
| JP2005012974A (en) * | 2003-06-20 | 2005-01-13 | Toyota Motor Corp | Stator, motor, stator manufacturing method, stator core winding device, and usage |
| CN101874276A (en) * | 2007-11-26 | 2010-10-27 | 住友电工运泰克株式会社 | Lubricating insulated electric wire and motor using the lubricating insulated electric wire |
| CN103858325A (en) * | 2011-12-15 | 2014-06-11 | 爱信艾达株式会社 | Method for producing stator, and coil insertion device |
| JP2017046373A (en) * | 2015-08-24 | 2017-03-02 | 株式会社林工業所 | Method of inserting coil into slot, and coil insertion device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522907A (en) * | 1991-07-08 | 1993-01-29 | Mitsubishi Electric Corp | Coil inserting method into magnetic core |
| JP2000184668A (en) * | 1998-12-18 | 2000-06-30 | Calsonic Kansei Corp | Manufacture of motor |
| JP2005192339A (en) * | 2003-12-25 | 2005-07-14 | Nissan Motor Co Ltd | Structure and manufacturing method for stator for motor |
| JP5262923B2 (en) * | 2009-03-31 | 2013-08-14 | アイシン・エィ・ダブリュ株式会社 | Varnish impregnation pretreatment method and apparatus |
-
2019
- 2019-04-19 JP JP2019079982A patent/JP2020178465A/en not_active Ceased
-
2020
- 2020-04-13 CN CN202010283894.5A patent/CN111835165A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0810567B2 (en) * | 1987-01-28 | 1996-01-31 | 古河電気工業株式会社 | Insulated wire with self-lubricating property |
| US5090110A (en) * | 1989-10-13 | 1992-02-25 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing stator for rotating machine |
| JP2005012974A (en) * | 2003-06-20 | 2005-01-13 | Toyota Motor Corp | Stator, motor, stator manufacturing method, stator core winding device, and usage |
| CN101874276A (en) * | 2007-11-26 | 2010-10-27 | 住友电工运泰克株式会社 | Lubricating insulated electric wire and motor using the lubricating insulated electric wire |
| CN103858325A (en) * | 2011-12-15 | 2014-06-11 | 爱信艾达株式会社 | Method for producing stator, and coil insertion device |
| JP2017046373A (en) * | 2015-08-24 | 2017-03-02 | 株式会社林工業所 | Method of inserting coil into slot, and coil insertion device |
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|---|---|
| JP2020178465A (en) | 2020-10-29 |
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