WO2016076321A1 - 積層鉄心及びその製造方法 - Google Patents
積層鉄心及びその製造方法 Download PDFInfo
- Publication number
- WO2016076321A1 WO2016076321A1 PCT/JP2015/081631 JP2015081631W WO2016076321A1 WO 2016076321 A1 WO2016076321 A1 WO 2016076321A1 JP 2015081631 W JP2015081631 W JP 2015081631W WO 2016076321 A1 WO2016076321 A1 WO 2016076321A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- caulking
- iron core
- laminated
- core
- piece
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
-
- 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
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- 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
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
Definitions
- the present invention relates to a laminated iron core in which iron core pieces adjacent in the laminating direction are joined together using a caulking block provided on each iron core piece, and a method for manufacturing the same.
- the butterfly-shaped caulking block 121 has one wing-shaped portion 122 fitted and fixed to the fitting recess 123 formed in the iron core piece 120, the caulking block 121 is removed from the iron core piece 120. It is necessary to slide the caulking block 121 in the stacking direction of the iron core pieces 120. For this reason, the mechanism to remove becomes complicated and time is required, resulting in an increase in manufacturing cost. Further, when the caulking block 121 is slid, the contact area with the caulking block 121 is turned in the sliding direction, resulting in a product defect and an increase in manufacturing cost. In particular, this phenomenon occurs in the iron core piece at the end in the stacking direction, and the incidence increases as the iron core piece with a smaller plate thickness.
- Patent Document 1 in order to facilitate the removal of the caulking block 121 from the iron core piece 120, a plurality of detaching recesses 124 to 126 are formed in the contact area between the caulking block 121 and the iron core piece 120.
- the punching process of the iron core piece becomes complicated. For example, since the number of processes increases, it is necessary to increase the size of the mold, resulting in an increase in manufacturing cost.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a laminated core that can be manufactured economically with good workability even when an iron core piece provided with a caulking block is used, and a method for manufacturing the same.
- the laminated core according to the first invention that meets the above-mentioned object is a laminated core composed of a rotor core or a stator core formed by laminating a plurality of core pieces having a predetermined shape.
- a caulking block that is removable along the radial direction is provided in one or both of the radially outer regions.
- the caulking block has a caulking portion that protrudes from the iron core piece and is formed with a caulking projection, and a connecting portion that engages with a fitting portion of the iron core piece.
- the connecting portion can be temporarily fixed to the fitting portion by a pushback process.
- the pushback process means that the connecting portion is once completely cut off (bended) from the iron core piece, and then the cut off connecting portion is pushed back to the iron core piece side (by hitting) to form a flat shape (the pushed back connection).
- the part and the level of the surrounding fitting part are matched), or after the connecting part is half-extracted from the iron core piece, the half-extracted connecting part is pushed back to the iron core one side again (hit) to make it flat. (The level of the pushed-back connecting portion and the surrounding iron core pieces are matched).
- the connecting portion is an isosceles trapezoid narrowing in the pulling direction, the connecting portion has a radial length of 0.5 to 2 mm, and the lower side on the front side from the upper side of the connecting portion is 0.2 mm or less. It should be wide in the range.
- the connecting portion is an isosceles trapezoid that widens in the pulling direction, the connecting portion has a radial length of 0.5 to 2 mm, and the lower side on the front side of the connecting portion is 4 mm or less. It should be narrow.
- the outline of the core piece on both sides of the caulking block may be connected to the final punched outline of the core piece with a step.
- a method of manufacturing a laminated core according to the second invention that meets the above-mentioned object is a method of manufacturing a laminated core in which a plurality of core pieces having a predetermined shape are laminated to form a rotor core or a stator core.
- a caulking block that is removable along the radial direction is provided in one or both of the radially inner side and the radially outer side, and the core pieces are stacked and connected via the caulking block. Is placed on the jig, and then the caulking block is removed from the laminated core pieces by pulling them in the radial direction, and the laminated iron pieces are connected by one or more of resin, adhesive, and welding. To do.
- the caulking block has a caulking portion where caulking protrusions are formed and a connecting portion that engages with a fitting portion of the iron core piece, and the connecting portion includes: It is preferable that the fitting portion is fitted to the fitting portion by a push-back process that is struck after being cut or bent halfway and made flat.
- the connecting portion is an isosceles trapezoid narrowing in the drawing direction, and the angle of the hypotenuse is tan ⁇ 1 0.1 or less. Further, the connecting portion is a isosceles trapezoid widens the drawing direction, the angle of the oblique side may be tan -1 2 below.
- a method of manufacturing a laminated core according to the third aspect of the present invention wherein a plurality of the core pieces are caulked and laminated by caulking blocks formed in one or both of the radially inner side and the radially outer side of the core piece. And, after removing the caulking block from the laminated core pieces, a laminated core manufacturing method for fixing the laminated core pieces, wherein the outer shape of the core piece is placed in the region of the core pieces.
- a leading portion is formed in a region radially outward from the caulking portion where the caulking projection is formed. Is preferably formed.
- a method of manufacturing a laminated core comprising: forming a core piece provided with a bridge piece portion straddling the shaft hole in a shaft hole formed in the center; Lamination comprising a rotor core that produces a caulking block in the outer region in the direction, caulking and laminating the iron core pieces, removing the caulking block from the laminated iron core pieces, and then fixing the laminated iron core pieces
- a method for manufacturing an iron core comprising: punching of first and second side regions that include axial hole outlines of the iron core piece and form both sides of the caulking block in a radially outer region of the bridge piece portion.
- a first step of performing Before caulking block A third step of detachably connecting to the iron core piece, and after punching and removing the radially inner region of the bridge piece, the outer shape of the iron core piece is punched and formed, and the iron core piece with the caulking block is caulked and laminated A fourth step, a fifth step of removing the caulking block radially inward from the stacked core pieces, and a sixth step of fixing the stacked core pieces.
- a laminated iron core manufacturing method comprising: a plurality of caulking blocks formed so that a core piece having a shaft hole formed in the center thereof is separable into a radially inner region of the shaft hole. After caulking and placing on a jig and removing the caulking block from the laminated iron core pieces by pulling them inward in the radial direction, the laminated iron core pieces are fixed.
- the second and subsequent iron core pieces are formed in the area where the caulking block of the strip material forming the core piece located at the lowermost part is formed.
- a concave hooking part into which a jig for pulling out can be provided may be provided on a surface extending in the radial direction of the caulking block.
- the caulking block has a caulking portion that caulks the laminated iron core pieces, and the caulking portion has a flat shape having a short axis and a long axis longer than the short axis, and the long axis is in the drawing direction. You may have the crimping protrusion extended along.
- a concave hooking portion into which a jig for pulling out can be formed on the side extending in the radial direction of the caulking block.
- the caulking projection when forming the caulking portion to be the caulking block, has a flat shape having a short axis and a long axis longer than the short axis, and the long axis extends along the drawing direction. You may form as follows.
- a shoulder portion having a side extending in the radial direction and a side extending in the circumferential direction at the base portion on one side of the iron core of the caulking portion constituting the caulking block in the pushback process.
- the iron core piece has a plurality of fitting portions into which connecting portions of the plurality of caulking blocks are fitted, respectively. At least one of the plurality of fitting portions may have a shape different from that of the other fitting portions.
- the iron core piece has a plurality of fitting portions into which connecting portions of the plurality of caulking blocks are fitted, respectively. At least one of the plurality of fitting portions has a shape different from the other fitting portions, Rolling the iron core piece and laminating and laminating the iron core pieces, removing the caulking block to expose the fitting portion, You may test
- the manufacturing method of the laminated core according to the first invention and the laminated cores according to the second and third inventions can be removed along the radial direction in the radially inner and / or radially outer regions of each core piece. Since the caulking block is provided, the mechanism for removing the caulking block can be simplified as compared with the prior art, and the time required for the removal can be shortened, so that the manufacturing cost can be reduced. In addition, unlike the conventional case, there is no possibility that the contact area with the caulking block is turned in the sliding direction, so there is no need to increase the number of punching steps to prevent this, and product defects caused by this can be prevented. The manufacturing cost can be reduced. Therefore, even if it uses the iron core piece provided with the crimping block, the laminated iron core which can be manufactured economically with good workability and its manufacturing method can be provided.
- the caulking block is removed by pulling in the radial direction, and any of resin, adhesive, and welding is performed. Since it is connected (fixed) with one or more layers, the laminated core pieces are laminated in a state where the stress generated by the caulking block is removed, and the laminated core pieces are aligned and arranged following a jig. Can be integrated. Therefore, since the shape accuracy of the laminated core can be improved, it is possible to provide a laminated iron core of good quality.
- the caulking block is formed in the shaft hole provided in the center of the rotor core, the punching process for forming the caulking block and the iron core piece laminated with the caulking block are laminated. Even if the operation of pulling and removing is performed, the shape accuracy on the outer peripheral side of the core piece can be prevented from being lowered and deformed, and a highly accurate rotor core can be manufactured.
- FIG. 1 is a perspective view of a laminated iron core according to a first embodiment of the present invention.
- A is a top view of the crimping block provided in the iron core piece which comprises the same laminated iron core
- (B) is a top view of the crimping block which concerns on a 1st, 2nd modification, respectively.
- (A)-(F) are the top views of the crimping part which concerns on a modification. It is a perspective view of the laminated iron core which concerns on the 2nd Embodiment of this invention.
- A)-(E) are explanatory drawings of the manufacturing method of the laminated iron core which concerns on the 1st Embodiment of this invention.
- FIG. 1 It is a perspective view which shows the mounting state to the conveyance jig
- (A), (B) is explanatory drawing which concerns on the modification of the manufacturing method of the laminated core which concerns on the 1st Embodiment of this invention. It is a top view of the core piece used with the manufacturing method of the laminated core which concerns on the 2nd Embodiment of this invention.
- (A)-(D) is explanatory drawing which shows the preparation process of the iron core piece used with the manufacturing method of the laminated iron core. It is a top view of the iron core piece which concerns on a modification.
- FIG. 1 A)-(D) are explanatory drawings of the manufacturing method of the laminated iron core which concerns on the 3rd Embodiment of this invention.
- (A)-(C) is an explanatory view showing a process of producing a caulking block provided on an iron core piece used in the method for producing the laminated iron core. It is a top view of the iron core piece which concerns on a prior art example. It is a perspective view which shows the laminated iron core which concerns on the modification of this invention.
- (A) to (H) are plan views of a first caulking block to a fourth caulking block provided on an iron core piece constituting the laminated iron core shown in FIG.
- a laminated core 10 is a stator core (stator), and is a plurality of predetermined shapes that are punched from a strip and laminated.
- a caulking block 12 that is removable along a radial direction (a direction orthogonal to the stacking direction, here, a horizontal (lateral) direction) is provided in a region outside the core piece 11 in the radial direction.
- the laminated iron core 10 serving as a product body has an annular yoke portion 13 and a plurality of magnetic pole portions 14 formed inside thereof, and the yoke portion 13 is an annular shape of a plurality of laminated iron core pieces 11.
- the yoke piece portion 15 and the magnetic pole portion 14 are respectively formed by the magnetic pole piece portions 16 of the plurality of laminated iron core pieces 11. This will be described in detail below.
- the iron core piece 11 constituting the laminated iron core 10 has an annular integral structure.
- the core piece has a split structure in which a plurality of arc-shaped core pieces can be connected in a ring shape, or a part of the plurality of arc-shaped core pieces in the circumferential direction is connected by a connecting portion, and the connecting portion is folded.
- a structure that can be bent into an annular shape may be used.
- the core piece 11 is formed by punching from a strip made of an electromagnetic steel sheet or amorphous having a thickness of, for example, about 0.10 to 0.5 mm.
- the iron core piece 11 is formed by punching from a single strip, it may be punched from a plurality of strips (for example, two or more).
- the core pieces 11 adjacent to each other in the laminating direction are inserted into a through-hole (bonding portion) 17 formed in communication with the yoke 13 in the laminating direction, with resin (thermosetting resin (for example, epoxy resin) or thermoplastic resin). 18 is filled and connected, but it is also possible to fill and connect a recess (bonding portion) formed in communication in the stacking direction on the radially inner side or radially outer side of the laminated core. Two or more of these can be combined.
- a plurality of through holes 17 are formed at equal pitches in the circumferential direction of the laminated core 10.
- an adhesive or welding can be used for the connection between the core pieces, and two or more of resin, adhesive, and welding can be used in combination.
- a plurality of (four in this case) caulking blocks 12 are provided at equal pitches in the circumferential direction in the radially outer region of each iron core piece 11, that is, in the radially outer region of the yoke piece 15.
- the crimping block 12 is shown in the state attached to the laminated core 10 in FIG. 1 for convenience of explanation, it is removed before connecting the core pieces 11 to each other as will be described later.
- the caulking block 12 has a caulking portion 20 in which caulking protrusions 19 are formed.
- the caulking portion 20 has, for example, a rectangular shape in plan view, is provided to protrude from the iron core piece 11 (yoke piece portion 15), and is drawn out on both sides in the width direction (direction perpendicular to the drawing direction).
- a latching portion 20a for latching the jig is provided along the drawing direction.
- the caulking portion is for facilitating removal of the caulking block from the iron core piece, and the shape is not particularly limited as long as this requirement can be satisfied.
- the caulking portion 20b is provided with a hooking portion 20c having a shape different from that of the hooking portion 20a, and a hole 20e is formed in the center portion of the caulking portion 20d as shown in FIG. Increased deformability makes it difficult to come off when gripped, or as shown in FIG. 3 (C), a caulking portion 20g is provided with a hooking portion 20h having a position different from that of the hooking portion 20a, and the pulling force is ensured. As shown in FIG.
- a multi-stage hooking portion 20j is provided on both sides of the caulking portion 20i as shown in FIG. 3D, or the caulking portion 20k is seen in plan view as shown in FIG.
- the hook has a different shape from the hook 20a.
- the tip portion of the caulking portion 20n as shown in FIG. 3 (F) it can also be or provided hook portion 20p of an isosceles trapezoid shape in which the width becomes narrower in the drawing direction.
- the latching portion is provided on the outer diameter side of the final punched outer diameter line 25 of the iron core piece 11. Is preferred.
- the latching portion is preferably provided at a position spaced from the final punched outer diameter wire 25 of the iron core piece 11 toward the outer diameter side.
- the end on the inner diameter side of the latching portion is preferably spaced from the final punched outer diameter line 25 to the outer diameter side.
- the tip of the jig is less likely to damage the outer peripheral surface of the iron core piece 11 when the jig is hooked on the latching portion.
- the concave shape into which a jig for pulling out the caulking block 12 can enter the surface extending in the radial direction of the caulking block 12. A recess is provided.
- the latching portion 20a is provided as a concave shape that is recessed in the circumferential direction on both sides in the width direction of the caulking portion 20 that is rectangular in plan view. That is, the side extending in the pulling direction of the caulking portion 20 has a step portion that is lower than the inner diameter side and the outer diameter side at the center portion in the radial direction. Since the recessed latching portion 20a can have a large opening, the jig can easily enter the latching portion 20a, and the jig can be easily hooked on the latching portion 20a.
- the caulking protrusion 19 formed at the center position of the caulking portion 20 is formed by half-cut caulking or V caulking.
- a caulking hole (through hole) into which the caulking protrusion 19 is fitted is formed in the caulking portion of the caulking block provided in the first iron core piece in the stacking order.
- the size of the caulking protrusion 19 is not particularly limited as long as a plurality of core pieces 11 can be integrated without shifting the relative positions of the adjacent core pieces 11 in the stacking direction.
- the outer dimensions, the number of stacked layers, the weight, etc. can be variously changed.
- the size of one side is about 0.5 to 5 mm (for example, 1 mm ⁇ 4 mm), and the caulking depth is about 0.5 to 2 sheets of the thickness of the core piece (for example, core piece 1 Can be used.
- the caulking protrusion 19 is formed in a substantially rectangular shape.
- the caulking protrusion 19 has a short side extending in the circumferential direction and a long side extending in the radial direction. In this way, the major axis of the caulking protrusion 19 extends in the pulling direction. Since the strength of the caulking projection 19 in the pulling direction is high, the caulked portion is difficult to come off when the caulking block 12 is pulled out.
- the caulking protrusion 19 is not limited to a rectangular shape, and may be a flat shape such as an ellipse. It is preferable that the caulking protrusion has a flat shape having a short axis and a long axis longer than the short axis, and the long axis extends along the drawing direction.
- the caulking block 12 has a connecting portion 22 that engages with a fitting portion 21 that opens toward the radially outer side of the yoke piece portion 15.
- the connecting portion 22 has a quadrangular shape (sides located on both sides in the circumferential direction are parallel) in a plan view, and is continuously provided (connected) in the radial direction of the caulking portion 20. It is temporarily fixed to the fitting part 21 by the back process. Specifically, the connecting portion 22 is completely separated from the yoke piece portion 15 of the iron core piece 11 once (cut and bent) or half-extracted, and then the disconnected or half-extracted connecting portion 22 is pushed back (beating) again. The level of the connecting portion 22 and the surrounding yoke piece 15 is made to be flat.
- the connecting portion 22 is wider than the caulking portion 20 by the width of the connecting portion with the caulking portion 20 corresponding to the length of the shoulder portions 23 and 24 forming the connecting portion 22.
- the outlines 36 and 38 of the iron core piece 11 that are respectively continuous with the shoulder parts 23 and 24 forming the connecting portion 22 are stepped on the final punching outline 25 of the iron core piece 11. 26 are connected, but this step may be omitted.
- the size of the connecting portion 22 can be variously changed according to the specifications of the laminated iron core (the outer dimensions of the iron core pieces, the number of laminated layers, the weight, etc.).
- the radial length L1 is 0.5 to 2 mm (moreover, the upper limit Is about 1.5 mm).
- the caulking portion 20 preferably has a shoulder portion.
- the shoulder portions 23 and 24 are portions that connect the side extending in the radial direction of the caulking portion 20 and the final punched outline 25 of the core piece 11.
- the shoulder portions 23 and 24 are constituted by a side extending in the radial direction and a side extending along the step 26 extending in the circumferential direction of the core piece 11.
- the shoulder portions 23 and 24 include a surface extending in the radial direction and a surface extending in the circumferential direction.
- the caulking block can be configured as shown in FIGS. 2B and 2C as long as it can be removed along the radial direction.
- the caulking block 27 shown in FIG. 2B has an isosceles trapezoid in which the connecting portion 28 becomes narrower in the drawing direction, and the length L2 in the radial direction of the connecting portion 28 is 0.5 to 2 mm.
- the protruding widths w1 and w2 of the front lower side W2 with respect to the base upper side W1 projecting on both sides of the connecting portion 28 are equal (w1 and w2 are each 0.1 mm or less, preferably 0.075 mm or less, For example, about 0.05 mm).
- the inclination angle ⁇ 1 with respect to the radial direction of the hypotenuse 29 is set to tan ⁇ 1 0.1 or less (exceeding 0 degree and 5.8 degrees or less, preferably 4.3 degrees or less, for example, about 2.9 degrees). Is good.
- the caulking block 30 shown in FIG. 2C has an isosceles trapezoid in which the connecting portion 31 is widened in the pulling direction, and the radial length L3 of the connecting portion 31 is 0.5 to 2 mm.
- the front lower side W4 of the connecting portion 31 is narrower in the range of more than 0 and 4 mm or less (preferably 3 mm or less) from the base side upper side W3.
- the protruding widths w3 and w4 of the base upper side W3 protruding from both sides of the connecting portion 31 with respect to the front lower side W4 are equal (w3 and w4 are 2 mm or less, preferably 1.5 mm or less, respectively). .
- the inclination angle ⁇ 2 with respect to the radial direction of the hypotenuse 32 is preferably tan ⁇ 1 2 or less (exceeding 0 ° and 64 ° or less, preferably 56 ° or less).
- the caulking block 30 shown in FIG. 2 (C) has a shape in which the tip side of the connecting portion 31 is narrower than the caulking block 12 shown in FIG.
- the holding force of the caulking block 30 in the laminated iron core (engagement force of the caulking block 30 with respect to the fitting portion) tends to be weakened. For this reason, for example, the position of the caulking projection in the caulking portion is closer to the connecting portion side than the position shown in FIG. 2C (by moving the material of the caulking portion to the connecting portion side).
- the degree of fitting with respect to the fitting portion can be increased, and the holding force of the caulking block can be increased.
- the protrusion widths (w3, w4) of the base side upper side W3 with respect to the lower side W4 are various tests in which the effect of caulking of the laminated iron core by the caulking block and whether the caulking block can be removed along the radial direction are examined. Is set based on the result obtained by the above.
- the caulking block as the laminated core according to the second embodiment of the present invention includes a radially inner region of the plurality of core pieces 11a, that is, a radially inner side of the yoke piece 15a. In this region (between adjacent magnetic pole piece portions 16a), a plurality (four in this case) can be provided at an equal pitch in the circumferential direction. In this case, the drawing direction of the caulking block 12a is on the axial center side of the laminated iron core 10a.
- a plurality of caulking blocks can be provided in both the radially inner and radially outer regions of the iron core piece.
- a plurality of iron cores are formed in the order shown in FIGS. 5A to 5E using a die (not shown) from a strip 33 made of an electromagnetic steel sheet having a thickness of, for example, about 0.10 to 0.5 mm.
- a piece 11 is punched out.
- the caulking block that is slid in the conventional stacking direction (here, the vertical (longitudinal) direction)
- the thinner the core piece the higher the rate of turning in the sliding direction, so the thickness of the strip is 0.2 mm. If it is the following, the effect of this invention will become more remarkable.
- This punching of the core piece 11 is performed from one strip 33, but a plurality of core pieces are punched simultaneously from a state in which a plurality of strips (for example, two or more) are stacked. May be.
- the first and second side regions 34 and 35 are punched in the radially outer region of the core piece 11 that is to be punched from the strip 33.
- the first side region 34 includes one outline 36 of the iron core piece 11 shown in FIG. 2A, forms one side 37 (including the shoulder 23) of the caulking block 12, and the second 2A includes the other outline 38 of the iron core piece 11 shown in FIG. 2A, and forms the other side 39 (including the shoulder portion 24) of the caulking block 12 (the first step). ).
- the concave latching part of a crimping part it is preferable to form the concave latching part of a crimping part.
- the caulking portion when forming the caulking portion to be the caulking block, it is preferable to form a concave hooking portion into which a jig for pulling out the caulking block can enter the side extending in the radial direction of the caulking block.
- a concave hooking portion is formed on the surface extending in the radial direction of the caulking block 12.
- a strip 33 in which the first and second side regions 34 and 35 have been punched is the center of the first and second side regions 34 and 35.
- a caulking protrusion 19 made of half-out caulking, V caulking or the like is formed at the position.
- a caulking hole (through hole) into which the caulking protrusion 19 is fitted is formed in the caulking portion of the caulking block provided in the first core piece in the stacking order (the second step). Note that the order of the first step and the second step described above may be interchanged.
- the caulking protrusion 19 is formed in a flat shape having a short axis and a long axis longer than the short axis, and the long axis is along the drawing direction. It is preferable to form it to extend.
- the connecting portion 22 to which the caulking block 12 to be punched from the strip 33 is connected to the iron core piece 11 is formed by the push-back process described above, and the caulking block 12 is formed into the iron core piece 11.
- the connecting portion 22 is formed so that the radially outer portions of the cutting lines 40 and 41 including both sides of the connecting portion 22 overlap the first and second side regions 34 and 35, respectively.
- shoulder portions 23 and 24 are formed, and the caulking block 12 can be reliably separated from the iron core piece 11 in the fifth step described later.
- the shoulder portions 23 and 24 are formed from the circumferential dimension of the root portion of the caulking portion 20 on the iron core piece 11 side when the connecting portion 22 is formed.
- Shoulders 23 and 24 can be formed on the caulking portion 20 by performing a pushback process using a mold having a large size. In this way, during the push-back process, a shoulder portion having a radially extending side and a circumferentially extending side is formed at the root portion on the iron core piece 11 side of the caulking portion 20 constituting the caulking block 12. Is desirable.
- the fitting strength between the fitting portion 21 and the connecting portion 22 of the iron core piece 11 can be adjusted.
- this adjustment method for example, it is located on both sides of the connecting portion depending on the type, size, depth, orientation, forming position of the caulking block, the radial length of the connecting portion, the inclination angle of the hypotenuse of the connecting portion, etc.
- the iron core piece 11 with the caulking block 12 is formed by punching, and as shown in FIG. 5 (E), the iron core pieces 11 with the caulking block 12 are caulked and laminated.
- the plurality of laminated iron core pieces 11 laminated iron cores 10) are laminated and connected (temporarily joined) by the connecting portions 22 of the laminated caulking blocks 12. 2A, the final punched outline 25 of the core piece 11 intersects the punched lines 42 and 43 on both sides of the first and second side regions 34 and 35 in the width direction. Do as you do. Thereby, in the 5th process mentioned later, separation from iron core piece 11 of caulking block 12 can be carried out reliably (above, 4th process).
- the conveyance jig 44 has a substantially circular mounting table 45 and a core member (guide member) 46 provided at the center thereof.
- the core member 46 is chamfered at the upper end portion, but the other portion has a circular cross section (may be a polygonal cross section) and is in contact with the inner end portion of the magnetic pole portion 14. Thereby, as shown in FIG. 6, FIG. 7, the axial center of the laminated iron core piece 11 can be positioned.
- a plurality of positioning members that are in contact with the magnetic pole portions 14 and that stop the laminated iron core with respect to the mounting table may be disposed opposite to each other on the mounting table.
- This positioning member may be used instead of the above-described core material, and can also be used in combination with the core material.
- a notch 47 that can be used when connecting a plurality of laminated core pieces 11 after the caulking block 12 is removed, which will be described later, is provided at a position immediately below the laminated caulking block 12 around the mounting table 45. However, it may not be formed depending on the connection method.
- the core material is used to position the laminated core pieces 11 on the basis of the inner diameter.
- the laminated core pieces 11 are arranged using a positioning member that contacts the outer peripheral surface of the yoke portion 13. Can be positioned on the basis of the outer diameter.
- the laminated and integrated caulking block 12 is removed from the laminated iron core 10 by pulling in the radial direction of the iron core piece 11. Thereby, each iron core piece 11 restrained by the integrated caulking block 12 is released, and the iron core pieces 11 are aligned along the core material 46, so that the laminated iron core 10 with higher accuracy is obtained (the fifth step). .
- the through hole 17 is filled with the resin 18 and the plurality of core pieces 11 are connected (fixed) in the stacking direction.
- the resin sealing (resin bonding) of the laminated iron core 10 is performed, for example, after the laminated iron core 10 is transported between the upper mold and the lower mold in a state where the laminated iron core 10 is placed on the conveyance jig 44. This can be implemented by filling the through hole 17 with the resin 18.
- an adhesive or welding can also be used for the connection between the core pieces, and any two or more of resin, adhesive, and welding can be used in combination (above, (6th process).
- a crimping protrusion 19 is formed as shown in FIG. 8A before punching and forming the core piece 11 with the crimping block 12 in the fourth step. It is also possible to form, for example, a rectangular leading-out portion 47 a exceeding the width of the caulking portion 20 in a region radially outward from the portion 20.
- exceeding the width of the caulking portion 20 means that the length of the radially inner side of the rectangular leading portion 47a exceeds the width of the distal end portion of the caulking portion 20 on the radially outer side, A state in which both corners on the radially inner side of 47 a overlap with the first and second side regions 34 and 35.
- the final punching outline 25 of the core piece 11 shown in FIG. 2 (A) is a punching line 42 on both sides in the width direction of the first and second side regions 34, 35.
- the core piece 11 can be punched into the die 47b.
- the outline 47d of the punch 47c in the region in contact with the caulking portion 20 is located radially inward from the tip of the caulking portion 20, and the caulking block 12 is placed in the iron core piece 11.
- the die 47b is punched out in a connected state.
- the caulking portion 20 can be separated from the strip material 33 and separated through the core piece 11 (stripe material 33) and the connecting portion 22 before punching and forming the core piece 11. It is in a state to connect to. For this reason, even if the iron core piece 11 is punched into the die 47b in a state where the caulking block 12 is connected, an elastic recovery phenomenon does not occur in the caulking portion 20, and the tip of the caulking portion 20 and the inner circumference of the die 47b It is possible to prevent excessive frictional force between the two.
- the method for manufacturing a laminated core according to the second embodiment of the present invention is a method for producing a laminated core made of a rotor core (rotor), and as shown in FIG. 9, a shaft hole 50 formed at the center. And a key piece portion 51 that protrudes inward in the radial direction of the shaft hole 50 and is opposed to a region at an angular position different from the key piece portion 51 in the radial direction inside of the shaft hole 50, for example, 2
- An iron core piece 53 having two caulking blocks 52 is produced and caulked and laminated. After the caulking block 52 is removed from the laminated iron core pieces 53, the laminated iron core pieces 53 are fixed.
- Reference numeral 54 is an outline of the shaft hole of the core piece 53
- reference numeral 55 is a punching hole formed along the circumferential direction of the core piece 53 and constituting a magnet insertion portion of the rotor core 53
- reference numeral 56 is a fixing of the core piece 53. It is a through-hole which comprises the penetration part which inject
- An iron core piece 53 produced by the method for producing a laminated iron core according to the second embodiment of the present invention is produced in the production process shown in FIGS. 10 (A) to 10 (D).
- the shaft hole 50 is formed in a region where the shaft hole 50 (see FIG. 10D) provided in the center of the punched-out iron core piece 53 is formed.
- the key piece 51 so that a key piece 51 protruding inward in the radial direction of the key piece 51 and a bridge piece 58 straddling the shaft hole 50 at different angular positions with respect to the key piece 51 are formed.
- a pair of lower holes 59 and 60 having a punching outline composed of a contour of the bridge piece 58 and a part of the shaft hole outline 54 are formed by punching, and then a radially outer region of the bridge piece 58 is formed.
- the first and second side regions 61 and 62 that form both sides of the caulking block 52 including the shaft hole outline 54 are punched.
- the bridge piece 58 can also be formed in a state in which first and second side regions 61 and 62 that form both sides of the caulking block 52 are provided in the radially outer region. In the second step shown in FIG.
- the caulking projection 63 is formed between the first and second side regions 61 and 62, for example, at the center of the first and second side regions 61 and 62. .
- FIG. 10A when the first and second side regions 61 and 62 are formed, it is preferable to form concave latching portions. That is, when forming the caulking portion to be the caulking block, it is preferable to form a concave hooking portion into which the jig for pulling out can enter the side extending in the radial direction of the caulking block.
- the caulking protrusion 63 is formed by half-out caulking, V caulking, or the like. Further, a caulking hole (through hole) into which the caulking protrusion 63 is fitted is formed at the center of the first and second side regions of the caulking block provided in the first iron core piece in the stacking order. Note that the order of the first step and the second step described above may be interchanged, and the formation of the caulking protrusion 63 (the caulking hole in the first iron core piece in the stacking order) is shown in FIG. It can also be formed in three steps (that is, before the outer shape of the iron core piece 53 is removed, a caulking projection (caulking hole) can be formed in an arbitrary step).
- the iron core piece of the 1st lamination order can also form the crimping protrusion 63 in which the crimping protrusion 63 fits in instead of a crimping hole.
- the caulking projection 63 is formed into a flat shape having a short axis and a long axis longer than the short axis, and the long axis is in the drawing direction. It is preferable to form so that it may extend along.
- the connecting portion 64 where the caulking block 52 is connected to the iron core piece 53 is formed by pushback processing, and the caulking block 52 can be separated into the iron core piece 53 (strip material 57). It is assumed to be connected.
- shoulder portions 23 and 24 having a surface extending in the radial direction and a surface extending in the circumferential direction are formed at the root portion of the caulking portion constituting the caulking block 52 on the iron core piece 53 side. Is preferred.
- the radially inner region of the bridge piece portion 58 (caulking protrusions 63 (facing holes in the first core piece in the stacking order) disposed opposite to both sides of the bridge piece portion 58).
- the outer shape of the core piece 53 (outline is not shown) is formed by punching, and the core piece 53 with the caulking block 52 is caulked and laminated.
- the jig used when removing the caulking block 52 from the stacked core pieces 53 is, for example, a mounting table that supports the stacked core pieces 53 and the stacked core pieces 53 that are provided on the mounting table and stacked.
- Resin filling the through-holes of the laminated core (the through-holes 56 formed in the laminated core pieces 53) performed in the fixing process of the core pieces 53 is performed with the laminated cores placed on the jig.
- it can be carried out by filling the penetration part with resin in a state where the laminated core is sandwiched between the upper mold and the mounting table.
- an adhesive or welding can be used for the connection between the iron core pieces, and any two or more of resin, adhesive, and welding can be used in combination.
- the punching of the core piece 53 is performed from one strip 57, but a plurality of core pieces are simultaneously removed from a state in which a plurality of strips 57 (for example, two, or three or more) are stacked. It can also be punched.
- the caulking block 52 is formed in a region at an angular position different from the key piece portion 51 on the radially inner side of the shaft hole 50.
- the laminated iron core was manufactured by caulking, but as shown in FIG. 11, the caulking block 65 was formed in the radially inner portion of the key piece portion 67 formed in the radially inner region of the shaft hole 66.
- a laminated iron core can also be manufactured by laminating the iron core pieces 68.
- the method for manufacturing a laminated core according to the third embodiment of the present invention is a method for producing a laminated core made of a rotor core, and the thickness is, for example, 0.10, as shown in FIG.
- an iron core piece 71 having a shaft hole 70 formed at the center is formed by using a die (not shown) from a strip 69 made of an electromagnetic steel sheet of about 0.5 mm.
- a plurality of caulking blocks 72 (see FIG. 12C) formed so as to be separable in a radially inner region of the hole 70 are caulked and stacked on a jig (not shown). After the caulking block 72 is removed by pulling inward in the radial direction, the laminated core pieces 71 are fixed.
- Reference numeral 73 denotes a shaft hole outline of the shaft hole 70. Details will be described below.
- a caulking block 72 of the strip 69 that forms the core piece 71 located at the lowermost part is formed.
- a caulking portion 74 formed of caulking protrusions is formed, and FIG. 13A, the shaft hole 70 is formed leaving the region where the crimp block 72 is formed in the strip 69. Specifically, the shaft hole 70 provided at the center of the iron core piece 71 is formed.
- Contour lines 75 and 76 on both sides in the width direction of the caulking block 72 that protrude inward in the radial direction of the shaft hole 70 and face each other in the region to be formed, and on the front side of the caulking block 72 (tips of the contour lines 75 and 76 Contour line 77) and shaft hole outline
- the connecting portion 79 where the caulking block 72 is connected to the core piece 71 is formed by pushback processing.
- the contour line 80 of the connecting portion 79 and the contour line of the lower hole 78 are connected to form the shaft hole contour line 73 of the shaft hole 70), as shown in FIGS. 12 (C) and 13 (C)
- a third step of detachably connecting the caulking block 72 to the iron core piece 71 is provided.
- the outline 80 of the connecting portion 79 and the outline of the lower hole 78 as shown in FIG.
- shoulder portions 23 and 24 having sides extending in the radial direction and sides extending in the circumferential direction are formed at the root portion of the caulking portion constituting the caulking block 72 on the iron core piece 71 side. Is preferred.
- the core pieces 71 are caulked and laminated and mounted on a jig (not shown), and as shown in FIG.
- a laminated core is obtained by filling the penetration part (not shown) of the laminated core pieces 71 with resin and connecting (fixing) the plurality of core pieces 71 in the lamination direction.
- the caulking portion 74 is formed in the first step, but the caulking portion 74 is formed by removing the outer shape of the iron core piece 71. If it is before, it can be performed in an arbitrary step.
- a caulking portion 74 (an example of caulking protrusion) is formed in a flat shape having a short axis and a long axis longer than the short axis, and the long axis is pulled out. It is preferable to form so as to extend along the direction.
- the present invention has been described with reference to the embodiment.
- the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims.
- Other embodiments and modifications conceivable within the scope are also included.
- the case where the laminated core of the present invention and the manufacturing method thereof are configured by combining some or all of the above-described embodiments and modifications are also included in the scope of the right of the present invention.
- the case where the laminated core of the present invention and the manufacturing method thereof are applied to an inner rotor type stator core in which the rotor core is disposed with a gap inside the stator core has been described.
- FIG. 15 is a perspective view showing a laminated core 100 according to a modification of the present invention.
- FIG. 16 is a plan view of first caulking block 91 to fourth caulking block 94 provided on iron core piece 110 constituting laminated iron core 100 shown in FIG. 16, (A) to (D) show a state in which the first caulking block 91 to the fourth caulking block 94 are connected to the iron core piece 110, and (E) to (H) are the first caulking blocks 91 to A state where the fourth caulking block 94 is removed from the iron core piece 110 is shown.
- the iron core piece 110 constituting the laminated iron core 100 includes four caulking blocks 91 to 94 including a first caulking block 91, a second caulking block 92, a third caulking block 93, and a fourth caulking block 94. Is provided.
- the first caulking block 91 to the fourth caulking block 94 are provided on the outer periphery of the iron core piece 110.
- the first caulking block 91 to the fourth caulking block 94 are provided at equal intervals in the circumferential direction of the iron core piece 110.
- the first caulking block 91 to the fourth caulking block 94 have a first connecting portion 101 to a fourth connecting portion 104, respectively.
- the first connecting portion 101 to the fourth connecting portion 104 are fitted to the first fitting portion 111 to the fourth fitting portion 114 provided on the outer peripheral edge of the iron core piece 110, respectively.
- the first caulking block 91 shown in FIG. 16 (A) has a first connecting portion 101 having a linear tip.
- the iron core piece 110 is provided with a first fitting portion 111 into which the first connecting portion 101 is fitted.
- the first fitting portion 111 is a recess having a linear bottom portion.
- the second caulking block 92 shown in FIG. 16 (B) has a second connecting portion 102 provided with one recess at the tip.
- the iron core piece 110 is provided with a second fitting portion 112 into which the second connecting portion 102 is fitted.
- the second fitting portion 112 has one convex portion 120.
- the third caulking block 93 shown in FIG. 16C has a third connecting portion 103 provided with two concave portions at the tip.
- the third fitting portion 113 into which the third connecting portion 103 is fitted has two convex portions 120.
- the fourth caulking block 94 shown in FIG. 16D has a fourth connecting portion 104 provided with three concave portions at the tip.
- the fourth fitting portion 114 into which the fourth connecting portion 104 is fitted has three convex portions 120.
- the laminated iron core 100 is obtained by laminating a plurality of iron core pieces 110.
- the core piece 110 may be rolled up for the purpose of dispersing the uneven thickness of the strip.
- the second core piece 110 is stacked on the first core piece 110, the second core piece 110 is arranged in the circumferential direction with respect to the first core piece 110. Laminate in a state rotated 90 degrees.
- the third core piece 110 is rotated by 90 degrees in the circumferential direction with respect to the second core piece 110. Laminate in such a state.
- the n-th core piece 110 is sequentially stacked on the (n ⁇ 1) -th core piece 110, the n-th core piece 110 is placed on the n-1-th core piece 110. Then, the layers are laminated in the circumferential direction.
- the first caulking block 91 to the fourth caulking block 94 are removed by pulling in the radial direction, and the first fitting portion 111 of the iron core piece 110 is removed.
- the fourth fitting portion 114 is exposed to the outside. Therefore, for example, paying attention to the first fitting portion 111, and confirming that the first fitting portion 111 is regularly displaced in the circumferential direction, it is inspected that the iron core piece 110 is correctly rolled. can do. In the example shown in FIG. 15, if the first fitting portion 111 is shifted counterclockwise in order from the upper side to the lower side of the drawing, the iron core pieces 110 are correctly rolled up.
- This inspection may be performed visually by a person, or may be inspected by a machine using a camera or the like.
- This inspection step is preferably performed before filling the through holes 17 with the resin 18 and connecting (fixing) the plurality of core pieces 110 in the stacking direction.
- the first fitting portion 111 is displaced in the circumferential direction in this way, it is possible to easily grasp how much the one core piece 110 is shifted and rolled in the circumferential direction. can do.
- the shapes of the first fitting portion 111 to the fourth fitting portion 114 are different from each other as in this modification, the shapes of the different shapes are obtained as long as the iron core piece 110 is correctly rolled.
- the first fitting portion 111 to the fourth fitting portion 114 are regularly arranged in the stacking direction. In the example shown in FIG. 15, there is no convex portion, one convex portion 120, two convex portions 120, and three convex portions 120 appear regularly from the top to the bottom of the figure. Therefore, it is possible to inspect whether or not the iron core pieces 110 are correctly rolled according to whether or not the first fitting portions 111 to the fourth fitting portions 114 having different shapes are regularly arranged in the stacking direction. it can.
- the plurality of caulking blocks may have different shapes.
- the shape of the caulking block is different, portions having different shapes of the caulking block appear regularly in the circumferential direction for the same reason as described above. For this reason, it is easy to roll the iron core piece 110 correctly.
- the present invention is not limited to this. If at least one fitting part has a different shape from the other fitting parts, it is confirmed that the fitting part having a different shape from the other fitting parts is regularly displaced in the circumferential direction. You can check that it is correctly transposed. Further, the number of fitting portions is not limited to four. Moreover, the rotation angle at the time of translocation is not limited to 90 degrees.
- the shape in which the convex portion is formed in the concave portion forming the second fitting portion 112 to the fourth fitting portion 114 has been described, but the shape of the fitting portion is not limited to the above-described example.
- the recessed part which makes a fitting part may have a recessed part, or may have a notch.
- the fitting portion itself may be a notch shape or a convex shape.
- a laminated core that can be manufactured economically with good workability even using an iron core piece provided with a caulking block, and a method for manufacturing the same.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
上記積層鉄心において、かしめブロックは、積層される鉄心片をかしめるかしめ部を有し、かしめ部は、短軸と短軸より長い長軸を有する扁平形状であって、長軸は引き抜き方向に沿って延びるかしめ突起を有していてもよい。
上記製造方法において、かしめブロックとなるかしめ部を形成する際に、かしめ部にかしめ突起を、短軸と短軸より長い長軸を有する扁平形状であって、長軸が引き抜き方向に沿って延びるように形成してもよい。
上記各製造方法において、プッシュバック処理の際に、かしめブロックを構成するかしめ部の鉄心片側の根本部位に、径方向に延びる辺と周方向に延びる辺とを有する肩部を形成することが好ましい。
前記鉄心片は、複数の前記かしめブロックの連結部がそれぞれ嵌合される複数の嵌合部を有し、
複数の前記嵌合部は少なくとも一つが他の前記嵌合部とは異なる形状であってもよい。
前記鉄心片は、複数の前記かしめブロックの連結部がそれぞれ嵌合される複数の嵌合部を有し、
複数の前記嵌合部は少なくとも一つが他の前記嵌合部とは異なる形状であり、
前記鉄心片を転積して前記鉄心片をかしめ積層し、前記かしめブロックを除去して前記嵌合部を露出させ、
他の前記嵌合部と異なる形状の前記嵌合部が周方向に規則的にずれていることを確認して前記鉄心片が正しく転積されていることを検査してもよい。
後述するかしめブロックの取外しをする際に、治具を掛止部に引掛けて、治具によりかしめブロックを引っ張る。掛止部が最終打ち抜き外径線25より外径側に位置していると、治具を掛止部に引掛ける際に、治具の先端が鉄心片11の外周面を傷つけにくい。
このように、掛止部が設けられたかしめ部20を含む鉄心片11を積層すると、かしめブロック12の径方向に延びる面に、かしめブロック12を引き抜く際の治具が進入可能な凹形状の凹部が設けられる。
厚みが、例えば、0.10~0.5mm程度の電磁鋼板からなる条材33から、金型(図示しない)を用いて、図5(A)~(E)に示す順序で、複数の鉄心片11を打抜く。なお、従来の積層方向(ここでは鉛直(縦)方向)にスライドさせるかしめブロックでは、厚みが薄い鉄心片ほどスライド方向へのめくれの発生率が高くなることから、条材の厚みが0.2mm以下であれば、本発明の効果がより顕著になる。この鉄心片11の打抜きは、1枚の条材33から行うが、条材を複数枚(例えば、2枚、更には3枚以上)重ねた状態のものから、複数の鉄心片を同時に打抜いてもよい。
なお、かしめブロック12となるかしめ部20を形成する際に、かしめ部20にかしめ突起19を、短軸と短軸より長い長軸を有する扁平形状であって、長軸が引き抜き方向に沿って延びるように形成することが好ましい。
より具体的には、図5(C)に示したように、肩部23、24は、連結部22を形成する際に、かしめ部20の鉄心片11側の根本部位の周方向の寸法より大きな寸法を有する金型により、プッシュバック処理を行うことにより、かしめ部20に肩部23、24を形成することができる。このように、プッシュバック処理の際に、かしめブロック12を構成するかしめ部20の鉄心片11側の根本部位に、径方向に延びる辺と周方向に延びる辺とを有する肩部を形成することが望ましい。
図10(A)に示すように、第1、第2の脇領域61、62を形成する際に、凹形状の掛止部を形成することが好ましい。つまり、かしめブロックとなるかしめ部を形成する際に、かしめブロックの径方向に延びる辺に、引き抜く際の治具が進入可能な凹形状の掛止部を形成することが好ましい。
なお、図示したように、かしめブロックとなるかしめ部を形成する際に、かしめ部にかしめ突起63を、短軸と短軸より長い長軸を有する扁平形状であって、長軸が引き抜き方向に沿って延びるように形成することが好ましい。
次いで、図10(D)に示す第4工程では、ブリッジ片部58の半径方向内側領域(ブリッジ片部58の両側に対向配置されるかしめ突起63(積層順番が1番目の鉄心片ではかしめ孔)より半径方向内側領域)を打抜き除去した後、鉄心片53の外形(外形線は図示せず)を打抜き形成して、かしめブロック52付きの鉄心片53をかしめ積層する。
図12(B)および図13(A)に示すように、第2工程において、輪郭線75、76を加工する際に、凹形状の掛止部を形成することが好ましい。つまり、かしめブロックとなるかしめ部を形成する際に、かしめブロックの径方向に延びる辺に、引き抜く際の治具が進入可能な凹形状の掛止部を形成することが好ましい。
なお、かしめブロックとなるかしめ部を形成する際に、かしめ部にかしめ加工部74(かしめ突起の一例)を、短軸と短軸より長い長軸を有する扁平形状であって、長軸が引き抜き方向に沿って延びるように形成することが好ましい。
本変形例においては、一枚目の鉄心片110の上に二枚目の鉄心片110を積層する際に、二枚目の鉄心片110を一枚目の鉄心片110に対して周方向に90度回転させた状態で積層する。次に、三枚目の鉄心片110を二枚目の鉄心片110の上に積層する際に、三枚目の鉄心片110を二枚目の鉄心片110に対して周方向に90度回転させた状態で積層する。このように、順次、n-1枚目の鉄心片110の上にn枚目の鉄心片110を積層する際に、n枚目の鉄心片110をn-1枚目の鉄心片110に対して周方向に回転させた状態で積層する。
この検査工程は、貫通孔17に樹脂18を充填して、複数の鉄心片110を積層方向に連結(固定処理)する前に行うことが好ましい。
また、このように第一嵌合部111が周方向にずれていることを確認することにより、一枚の鉄心片110が周方向にどのくらいの角度ずらされて転積されているかを容易に把握することができる。
Claims (17)
- 所定形状の複数の鉄心片を積層して形成された回転子鉄心又は固定子鉄心からなる積層鉄心において、前記各鉄心片の半径方向内側及び半径方向外側のいずれか一方又は双方の領域に、半径方向に沿って取外し可能なかしめブロックを設けたことを特徴とする積層鉄心。
- 請求項1記載の積層鉄心において、前記かしめブロックは、前記鉄心片から突出し、かしめ突起が形成されるかしめ部と、前記鉄心片の嵌合部に係合する連結部とを有していることを特徴とする積層鉄心。
- 請求項2記載の積層鉄心において、前記連結部はプッシュバック処理により前記嵌合部に仮止めされていることを特徴とする積層鉄心。
- 請求項2又は3記載の積層鉄心において、前記連結部は引き抜き方向に狭くなる等脚台形であって、前記連結部の半径方向の長さが0.5~2mmであり、前記連結部の上辺より先側下辺が0.2mm以下の範囲で広くなっていることを特徴とする積層鉄心。
- 請求項2又は3記載の積層鉄心において、前記連結部は引き抜き方向に広くなる等脚台形であって、前記連結部の半径方向の長さが0.5~2mmであり、前記連結部の上辺より先側下辺が4mm以下の範囲で狭くなっていることを特徴とする積層鉄心。
- 請求項1~5のいずれか1項に記載の積層鉄心において、前記かしめブロックの両側の前記鉄心片の外形線は、前記鉄心片の最終打抜き外形線に段を有して連結されていることを特徴とする積層鉄心。
- 請求項1~6のいずれか1項に記載の積層鉄心において、
前記鉄心片は、複数の前記かしめブロックの連結部がそれぞれ嵌合される複数の嵌合部を有し、
複数の前記嵌合部は少なくとも一つが他の前記嵌合部とは異なる形状であることを特徴とする積層鉄心。 - 所定形状の複数の鉄心片を積層して回転子鉄心又は固定子鉄心を形成する積層鉄心の製造方法において、前記各鉄心片の半径方向内側及び半径方向外側のいずれか一方又は双方の領域に、半径方向に沿って取外し可能なかしめブロックを設け、前記鉄心片を前記かしめブロックを介して積層連結し、積層された前記鉄心片を治具に配置した後、積層された前記鉄心片から前記かしめブロックを半径方向に引っ張って除去し、積層された前記鉄心片を、樹脂、接着剤、及び、溶接のいずれか1以上で連結することを特徴とする積層鉄心の製造方法。
- 請求項8に記載の積層鉄心の製造方法において、前記かしめブロックは、かしめ突起が形成されるかしめ部と前記鉄心片の嵌合部に係合する連結部とを有し、前記連結部は、切り曲げ後又は半抜き後に叩いて平面状とするプッシュバック処理により、前記嵌合部に嵌合させていることを特徴とする積層鉄心の製造方法。
- 請求項9に記載の積層鉄心の製造方法において、前記連結部は引き抜き方向に狭くなる等脚台形であって、斜辺の角度をtan-10.1以下にしていることを特徴とする積層鉄心の製造方法。
- 請求項9に記載の積層鉄心の製造方法において、前記連結部は引き抜き方向に広くなる等脚台形であって、斜辺の角度をtan-12以下にしていることを特徴とする積層鉄心の製造方法。
- 鉄心片の半径方向内側及び半径方向外側のいずれか一方又は双方の領域に形成されたかしめブロックによって複数の前記鉄心片をかしめ積層し、積層された前記鉄心片から前記かしめブロックを除去した後、積層された前記鉄心片の固定処理を行う積層鉄心の製造方法であって、前記鉄心片の前記領域に、前記鉄心片の外形線を含み、前記かしめブロックの両側辺を形成する第1、第2の脇領域の打抜きを行う第1工程と、前記第1、第2の脇領域の中央にかしめ突起を形成する第2工程と、前記かしめブロックが前記鉄心片に接続される連結部をプッシュバック処理によって形成し、前記かしめブロックを前記鉄心片に分離可能に連結する第3工程と、前記かしめブロックを備えた状態の前記鉄心片を打抜き形成して、前記かしめブロック付きの前記鉄心片をかしめ積層する第4工程と、積層された前記鉄心片を治具に配置した後、前記かしめブロックを半径方向に引っ張って積層された前記鉄心片から除去する第5工程と、積層された前記鉄心片の固定処理を行う第6工程とを有することを特徴とする積層鉄心の製造方法。
- 請求項12記載の積層鉄心の製造方法において、前記かしめブロックを備えた状態の前記鉄心片を打抜き形成する前に、前記かしめ突起が形成されるかしめ部より半径方向外側の領域に先抜き部を形成することを特徴とする積層鉄心の製造方法。
- 中央に形成された軸孔に、該軸孔を跨ぐブリッジ片部が設けられた鉄心片を形成し、前記ブリッジ片部の半径方向外側領域にかしめブロックを作製して該鉄心片をかしめ積層し、積層された前記鉄心片から前記かしめブロックを除去した後、積層された前記鉄心片の固定処理を行う回転子鉄心からなる積層鉄心の製造方法であって、前記ブリッジ片部の半径方向外側領域に、前記鉄心片の軸孔外形線を含み、前記かしめブロックの両側辺を形成する第1、第2の脇領域の打抜きを行う第1工程と、前記第1、第2の脇領域の間にかしめ突起を形成する第2工程と、前記かしめブロックが前記鉄心片に接続される連結部をプッシュバック処理によって形成し、前記かしめブロックを前記鉄心片に分離可能に連結する第3工程と、前記ブリッジ片部の半径方向内側領域を打抜き除去した後、該鉄心片の外形を打抜き形成して、前記かしめブロック付きの前記鉄心片をかしめ積層する第4工程と、前記かしめブロックを半径方向内側に引っ張って積層された前記鉄心片から除去する第5工程と、積層された前記鉄心片の固定処理を行う第6工程とを有することを特徴とする積層鉄心の製造方法。
- 中央に軸孔が形成された鉄心片を、前記軸孔の半径方向内側の領域に分離可能に形成された複数のかしめブロックによってかしめ積層して治具に載せ、積層された前記鉄心片から前記かしめブロックを半径方向内側に引っ張って除去した後、積層された前記鉄心片の固定処理を行うことを特徴とする回転子鉄心からなる積層鉄心の製造方法。
- 請求項15記載の積層鉄心の製造方法において、
最下部に位置する鉄心片を形成する条材の前記かしめブロックが形成される領域にかしめ孔を、第2枚目以降の鉄心片を形成する前記条材の前記かしめブロックが形成される領域にかしめ突起を形成する第1工程と、前記条材に前記かしめブロックが形成される領域を残して前記軸孔を形成する第2工程と、前記かしめブロックが前記鉄心片に接続される連結部をプッシュバック処理によって形成し、前記かしめブロックを前記鉄心片に分離可能に連結する第3工程と、前記鉄心片をかしめ積層して治具に搭載し、積層された前記鉄心片から前記かしめブロックを半径方向内側に引っ張って前記かしめブロックを除去する第4工程とを有することを特徴とする積層鉄心の製造方法。 - 前記鉄心片は、複数の前記かしめブロックの連結部がそれぞれ嵌合される複数の嵌合部を有し、
複数の前記嵌合部は少なくとも一つが他の前記嵌合部とは異なる形状であり、
前記鉄心片を転積して前記鉄心片をかしめ積層し、前記かしめブロックを除去して前記嵌合部を露出させ、
他の前記嵌合部と異なる形状の前記嵌合部が周方向に規則的にずれていることを確認して前記鉄心片が正しく転積されていることを検査する、請求項8~16のいずれか一項に記載の積層鉄心の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015005146.5T DE112015005146T5 (de) | 2014-11-14 | 2015-11-10 | Laminierter Eisenkern und Verfahren zum Herstellen desselben |
CN201580061773.3A CN107112824B (zh) | 2014-11-14 | 2015-11-10 | 叠片铁芯及其制造方法 |
CA2967562A CA2967562A1 (en) | 2014-11-14 | 2015-11-10 | Laminated core and method for manufacturing same |
JP2016559065A JP6185195B2 (ja) | 2014-11-14 | 2015-11-10 | 積層鉄心及びその製造方法 |
US15/525,662 US10630153B2 (en) | 2014-11-14 | 2015-11-10 | Laminated core and method for manufacturing same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014231647 | 2014-11-14 | ||
JP2014-231647 | 2014-11-14 | ||
JP2015202570 | 2015-10-14 | ||
JP2015-202570 | 2015-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016076321A1 true WO2016076321A1 (ja) | 2016-05-19 |
Family
ID=55954404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/081631 WO2016076321A1 (ja) | 2014-11-14 | 2015-11-10 | 積層鉄心及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US10630153B2 (ja) |
JP (2) | JP6185195B2 (ja) |
CN (1) | CN107112824B (ja) |
CA (1) | CA2967562A1 (ja) |
DE (1) | DE112015005146T5 (ja) |
WO (1) | WO2016076321A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018066518A1 (ja) * | 2016-10-05 | 2018-04-12 | 株式会社三井ハイテック | 鉄心片の製造方法 |
WO2018116585A1 (ja) * | 2016-12-22 | 2018-06-28 | 株式会社三井ハイテック | 積層鉄心の製造方法及び積層鉄心の製造装置 |
WO2018124093A1 (ja) * | 2016-12-28 | 2018-07-05 | 日本電産株式会社 | ロータコアの製造方法、ロータ、およびモータ |
EP3367539A1 (en) * | 2017-02-28 | 2018-08-29 | Hamilton Sundstrand Corporation | Electrical machine laminations |
KR101950993B1 (ko) * | 2017-10-19 | 2019-02-22 | 주식회사 고아정공 | 모터 코어 및 모터 코어의 제조장치 및 제조방법 |
CN110050402A (zh) * | 2016-12-15 | 2019-07-23 | 三菱电机株式会社 | 旋转电机的定子铁芯及其制造方法 |
JP2019180129A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社三井ハイテック | 積層体の製造方法及び積層体 |
JP7485949B2 (ja) | 2020-09-29 | 2024-05-17 | ダイキン工業株式会社 | モータ |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5958565B2 (ja) * | 2015-01-14 | 2016-08-02 | Jfeスチール株式会社 | 打抜き加工方法、打抜き加工装置、および積層鉄心の製造方法 |
JP6749784B2 (ja) | 2016-04-28 | 2020-09-02 | 株式会社三井ハイテック | 積層鉄心及びその製造方法 |
CN109643940B (zh) * | 2016-09-01 | 2020-11-17 | 三菱电机株式会社 | 层叠铁芯、层叠铁芯的制造方法及使用层叠铁芯的电枢 |
JPWO2018062003A1 (ja) * | 2016-09-30 | 2019-07-25 | 日本電産株式会社 | 積層コアの製造方法 |
EP3584332B1 (en) * | 2017-02-14 | 2023-05-10 | Panasonic Holdings Corporation | Thin strip component, method for manufacturing same, and motor using thin strip component |
JP2019068556A (ja) * | 2017-09-29 | 2019-04-25 | 日本電産株式会社 | ステータの製造方法、及びモータ |
JP6851126B2 (ja) * | 2017-10-30 | 2021-03-31 | 株式会社大一商会 | 遊技機 |
JP6851125B2 (ja) * | 2017-10-30 | 2021-03-31 | 株式会社大一商会 | 遊技機 |
JP6851124B2 (ja) * | 2017-10-30 | 2021-03-31 | 株式会社大一商会 | 遊技機 |
CN107968535B (zh) * | 2017-12-26 | 2023-10-13 | 浙江联宜电机有限公司 | 转子内型腔加工辅助固定装置 |
CN107979245B (zh) * | 2017-12-26 | 2024-04-05 | 浙江联宜电机有限公司 | 定子内型腔加工辅助固定装置 |
KR101888805B1 (ko) * | 2018-01-12 | 2018-08-14 | 박종훈 | 고정자 시스템 |
CN108941322A (zh) * | 2018-06-25 | 2018-12-07 | 广州铮高精密机械有限公司 | 一种圆环尖头的切割方法 |
CN109378204B (zh) * | 2018-08-29 | 2023-05-23 | 摩西智能工业股份有限公司 | 变压器铁芯高速叠片自动化系统 |
JP2020065375A (ja) * | 2018-10-17 | 2020-04-23 | 日本電産株式会社 | ステータコア及びモータ |
EP3902109A4 (en) * | 2018-12-17 | 2022-10-05 | Nippon Steel Corporation | LAMINATED CORE AND ROTARY MACHINE |
CN110155732B (zh) * | 2019-06-04 | 2024-03-26 | 江苏金佳铁芯有限公司 | 用于叠片储存原料的多位自动旋转料台 |
IT202000003602A1 (it) * | 2020-02-21 | 2021-08-21 | Euro Group S P A | Dispositivo di serraggio per pacchi lamellari |
JP2021191039A (ja) * | 2020-05-26 | 2021-12-13 | 日本電産株式会社 | 積層鉄心の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007336608A (ja) * | 2006-06-12 | 2007-12-27 | Kuroda Precision Ind Ltd | 積層鉄心製造方法 |
JP2012170222A (ja) * | 2011-02-14 | 2012-09-06 | Mitsui High Tec Inc | 固定子積層鉄心の製造方法及びそれを用いて製造した固定子積層鉄心 |
JP5357187B2 (ja) * | 2009-01-14 | 2013-12-04 | 三菱電機株式会社 | 積層コアの製造方法及びその製造治具 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11308821A (ja) * | 1998-04-22 | 1999-11-05 | Mitsui High Tec Inc | 積層鉄心の製造方法 |
JP3733120B2 (ja) * | 2002-12-27 | 2006-01-11 | 穩正企業股▲ふん▼有限公司 | モータの組合せ式固定子構造 |
KR100517923B1 (ko) * | 2003-02-27 | 2005-09-30 | 엘지전자 주식회사 | 전동기의 고정자 조립체 및 제조 방법 |
US7247967B2 (en) * | 2004-08-09 | 2007-07-24 | A. O. Smith Corporation | Electric motor having a stator |
WO2008044740A1 (fr) * | 2006-10-13 | 2008-04-17 | Mitsui High-Tec, Inc. | Noyau en fer stratifié et son procédé de fabrication |
JP4219400B2 (ja) * | 2007-04-25 | 2009-02-04 | 株式会社三井ハイテック | 異形積層コアの製造方法 |
CN201549939U (zh) | 2009-12-09 | 2010-08-11 | 青岛海立美达电机有限公司 | 电机定子组合冲片 |
JP2012165494A (ja) | 2011-02-03 | 2012-08-30 | Mitsui High Tec Inc | 積層鉄心及びその製造方法 |
JP6050084B2 (ja) | 2012-10-19 | 2016-12-21 | ミネベア株式会社 | スピンドルモータおよびハードディスク駆動装置 |
CN203119637U (zh) | 2012-11-30 | 2013-08-07 | 河南华阳能源发电科技有限公司 | 三相交流变频电机定子铁心冲片 |
JP5623498B2 (ja) | 2012-12-28 | 2014-11-12 | 三菱電機株式会社 | 固定子鉄心及び固定子及び電動機及び圧縮機 |
CN103595157A (zh) | 2013-12-05 | 2014-02-19 | 重庆市乐尔佳机械有限公司 | 一种超高能效1100瓦6极三相异步电动机 |
-
2015
- 2015-11-10 US US15/525,662 patent/US10630153B2/en active Active
- 2015-11-10 JP JP2016559065A patent/JP6185195B2/ja active Active
- 2015-11-10 CA CA2967562A patent/CA2967562A1/en not_active Abandoned
- 2015-11-10 CN CN201580061773.3A patent/CN107112824B/zh active Active
- 2015-11-10 DE DE112015005146.5T patent/DE112015005146T5/de active Pending
- 2015-11-10 WO PCT/JP2015/081631 patent/WO2016076321A1/ja active Application Filing
-
2017
- 2017-07-26 JP JP2017144545A patent/JP6221008B1/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007336608A (ja) * | 2006-06-12 | 2007-12-27 | Kuroda Precision Ind Ltd | 積層鉄心製造方法 |
JP5357187B2 (ja) * | 2009-01-14 | 2013-12-04 | 三菱電機株式会社 | 積層コアの製造方法及びその製造治具 |
JP2012170222A (ja) * | 2011-02-14 | 2012-09-06 | Mitsui High Tec Inc | 固定子積層鉄心の製造方法及びそれを用いて製造した固定子積層鉄心 |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018061344A (ja) * | 2016-10-05 | 2018-04-12 | 株式会社三井ハイテック | 鉄心片の製造方法 |
WO2018066518A1 (ja) * | 2016-10-05 | 2018-04-12 | 株式会社三井ハイテック | 鉄心片の製造方法 |
CN110050402A (zh) * | 2016-12-15 | 2019-07-23 | 三菱电机株式会社 | 旋转电机的定子铁芯及其制造方法 |
CN110050402B (zh) * | 2016-12-15 | 2021-02-02 | 三菱电机株式会社 | 旋转电机的定子铁芯及其制造方法 |
WO2018116585A1 (ja) * | 2016-12-22 | 2018-06-28 | 株式会社三井ハイテック | 積層鉄心の製造方法及び積層鉄心の製造装置 |
US11196324B2 (en) | 2016-12-22 | 2021-12-07 | Mitsui High-Tec, Inc. | Method of manufacturing stacked core with adhesive |
JP2018107852A (ja) * | 2016-12-22 | 2018-07-05 | 株式会社三井ハイテック | 積層鉄心の製造方法及び積層鉄心の製造装置 |
JPWO2018124093A1 (ja) * | 2016-12-28 | 2019-10-31 | 日本電産株式会社 | ロータコアの製造方法、ロータ、およびモータ |
WO2018124093A1 (ja) * | 2016-12-28 | 2018-07-05 | 日本電産株式会社 | ロータコアの製造方法、ロータ、およびモータ |
US11251685B2 (en) | 2016-12-28 | 2022-02-15 | Nidec Corporation | Rotor core with concave portions between flake portions and base portions with dimensions |
JP7047775B2 (ja) | 2016-12-28 | 2022-04-05 | 日本電産株式会社 | ロータコアの製造方法、ロータ、およびモータ |
EP3367539A1 (en) * | 2017-02-28 | 2018-08-29 | Hamilton Sundstrand Corporation | Electrical machine laminations |
KR101950993B1 (ko) * | 2017-10-19 | 2019-02-22 | 주식회사 고아정공 | 모터 코어 및 모터 코어의 제조장치 및 제조방법 |
JP2019180129A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社三井ハイテック | 積層体の製造方法及び積層体 |
JP7485949B2 (ja) | 2020-09-29 | 2024-05-17 | ダイキン工業株式会社 | モータ |
Also Published As
Publication number | Publication date |
---|---|
JP6185195B2 (ja) | 2017-08-23 |
CN107112824B (zh) | 2019-12-10 |
DE112015005146T5 (de) | 2017-07-27 |
JPWO2016076321A1 (ja) | 2017-06-01 |
US10630153B2 (en) | 2020-04-21 |
CN107112824A (zh) | 2017-08-29 |
JP6221008B1 (ja) | 2017-10-25 |
JP2017209009A (ja) | 2017-11-24 |
US20180358871A1 (en) | 2018-12-13 |
CA2967562A1 (en) | 2016-05-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6221008B1 (ja) | 積層鉄心及びその製造方法 | |
JP6401466B2 (ja) | 積層鉄心及びその製造方法 | |
JP4886375B2 (ja) | 積層鉄心製造方法 | |
US10587172B2 (en) | Manufacturing method for laminated iron core and manufacturing device for laminated iron core | |
EP2466732B1 (en) | Manufacturing method of a laminated rotor core | |
EP2086089A1 (en) | Laminated iron core, and its manufacturing method | |
KR20110048069A (ko) | 적층 코어의 제조 방법 및 그 제조 지그 | |
WO2015111096A1 (ja) | 積層鉄心製造装置および積層鉄心の製造方法 | |
WO2017130324A1 (ja) | 積層材の加工方法 | |
JP5212129B2 (ja) | 積層コアの製造方法及びその製造治具 | |
US10826362B2 (en) | Laminated iron core and method for manufacturing same | |
CN110140286B (zh) | 转子铁芯的制造方法、转子以及马达 | |
JP2007089360A (ja) | 積層鉄心の製造方法 | |
EP3582369A1 (en) | Annular core piece and annular core | |
JP2019075884A (ja) | 積層鉄心の製造方法 | |
EP3373425A1 (en) | Method for manufacturing laminated core | |
JP2007028760A (ja) | クローポール型モータの固定子鉄心の製造方法 | |
JP6400859B2 (ja) | 鉄心装置およびその製造方法 | |
JP6586286B2 (ja) | 積層鉄心の製造方法 | |
JP2024022823A (ja) | 磁石体製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15858707 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016559065 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2967562 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112015005146 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15858707 Country of ref document: EP Kind code of ref document: A1 |