CN113442545A - Laminate manufacturing device and laminate manufacturing method - Google Patents
Laminate manufacturing device and laminate manufacturing method Download PDFInfo
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- CN113442545A CN113442545A CN202110178673.6A CN202110178673A CN113442545A CN 113442545 A CN113442545 A CN 113442545A CN 202110178673 A CN202110178673 A CN 202110178673A CN 113442545 A CN113442545 A CN 113442545A
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- Prior art keywords
- steel plate
- laminated
- sample
- rotor core
- weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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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
- H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/30—Iron, e.g. steel
Abstract
Provided are a laminate manufacturing device and a laminate manufacturing method, wherein the length of a laminate in the stacking direction can be adjusted with high precision and with ease. A laminate manufacturing device (101) is a laminate manufacturing device for obtaining a laminate by laminating steel sheet members obtained by punching a rolled steel sheet roll (R) into a predetermined shape in the thickness direction. A laminate manufacturing device (101) is provided with: a cutting section (102) for cutting out a sample (T) of a predetermined length from a coil steel sheet (R); a laminating section (103) that forms a steel sheet member by punching the rolled steel sheet (R) from which the sample (T) has been cut out into the predetermined shape, and that laminates the steel sheet members in the thickness direction to obtain a laminate; and a control unit (104) that controls the number of stacked steel plate members stacked by the stacking unit (103) on the basis of the number of stacked steel plate members in the stacked body determined on the basis of the weight of the sample (T).
Description
Technical Field
The present invention relates to a laminate manufacturing apparatus and a laminate manufacturing method.
Background
There is known a laminate manufacturing apparatus for obtaining a laminate by laminating steel sheet members obtained by punching a rolled steel sheet into a predetermined shape in a thickness direction. As such a laminate manufacturing apparatus, for example, as disclosed in patent document 1, there is known a laminate manufacturing apparatus including: a plurality of electromagnetic steel plates are laminated to form a laminated block, and the number of laminated electromagnetic steel plates in the laminated block is adjusted based on thickness information on the thickness of a rotary laminated body obtained by laminating a plurality of the laminated blocks.
In the laminate manufacturing apparatus of patent document 1, the rotary laminate is obtained by rotating and laminating at least one laminate block with respect to another laminate block about an axis along the lamination direction. The laminate manufacturing apparatus measures the thickness of the temporary laminate in a state where a plurality of lamination blocks are stacked, and adjusts the number of stacked electromagnetic steel sheets based on thickness information on the thickness, before forming the rotary laminate.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2019-187173
Disclosure of Invention
However, as disclosed in patent document 1, when the thickness of the laminate, that is, the length of the laminate in the stacking direction is measured, a measurement error occurs due to the measurement method and the measurement instrument. Therefore, it is difficult to measure the thickness of the laminate with high accuracy.
There is a demand for a laminate manufacturing apparatus and a laminate manufacturing method that can adjust the length of the laminate in the stacking direction, which is difficult to measure, with high accuracy and with ease.
The invention aims to provide a laminate manufacturing device and a laminate manufacturing method, which can adjust the length of a laminate in the laminating direction with high precision and easiness.
A laminate manufacturing apparatus according to an embodiment of the present invention is a laminate manufacturing apparatus for obtaining a laminate by laminating steel sheet members obtained by punching a rolled steel sheet coil into a predetermined shape in a thickness direction. The laminate manufacturing apparatus includes: a cutting section that cuts out a sample having a predetermined length from the rolled steel sheet; a steel plate member laminating section that forms the steel plate member by punching a steel coil plate from which the sample is cut out into the predetermined shape, and that laminates the steel plate members in a thickness direction to obtain the laminate; and a control unit that controls the number of stacked steel plate members stacked by the steel plate member stacking unit, based on the number of stacked steel plate members in the stacked body determined based on the weight of the sample.
A laminate manufacturing method according to an embodiment of the present invention is a laminate manufacturing method for obtaining a laminate by laminating steel sheet members obtained by punching a rolled steel sheet into a predetermined shape in a thickness direction. The laminate manufacturing method includes: a cutting step of cutting a sample having a predetermined length from the coil steel sheet; a laminated number determination step of determining the number of laminated steel plate members in the laminated body based on the weight of the sample; and a laminating step of punching the coil steel sheet from which the sample has been cut out into the predetermined shape to form the steel sheet member, based on the number of laminated sheets, and laminating the steel sheet members in a thickness direction to obtain the laminated body.
According to the laminate manufacturing apparatus and the laminate manufacturing method of one embodiment of the present invention, the length of the laminate in the lamination direction can be adjusted with high accuracy and with ease.
The above and other features, elements, steps, features and advantages of the present invention will be more clearly understood from the following detailed description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a cross-sectional view showing a schematic structure of a motor having a rotor core as a laminated body of an embodiment.
Fig. 2 is a perspective view showing a schematic structure of a rotor core;
fig. 3 is a diagram schematically showing the structure of a laminate manufacturing apparatus.
Fig. 4 is a diagram schematically showing an example of data stored in the reference data storage unit.
Fig. 5 is a diagram schematically showing a state in which a rolled steel sheet is divided into a plurality of pieces in the width direction.
Fig. 6 is a diagram schematically showing an example of data corresponding to each of the split coil steel plates.
Fig. 7 is a flowchart illustrating a laminate manufacturing method.
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 constituent members in the drawings do not faithfully represent actual dimensions of the constituent members, dimensional ratios of the constituent members, and the like.
In the following description of the motor 1, a direction parallel to the central axis P of the rotor 2 is referred to as an "axial direction", a direction perpendicular to the central axis P is referred to as a "radial direction", and a direction along an arc centered on the central axis P is referred to as a "circumferential direction". However, the definition of the direction does not limit the direction of the motor 1 in use.
In the following description, expressions such as "fixing", "connecting", "joining", and "attaching" (hereinafter, fixing and the like) include not only a case where members are directly fixed to each other and the like, but also a case where members are fixed via other members and the like. That is, in the following description, expressions such as fixation include direct and indirect fixation of members.
(Structure of Motor)
Fig. 1 shows a schematic structure of a motor 1 including a rotor core 21 as a laminated body of an embodiment of the present invention. The motor 1 includes a rotor 2, a stator 3, and a housing 4. The rotor 2 rotates about a central axis P with respect to the stator 3. In the present embodiment, the motor 1 is a so-called inner rotor type motor in which a rotor 2 is rotatably positioned within a cylindrical stator 3 about a central axis P.
The rotor 2 includes a shaft 20, a rotor core 21, and a magnet 22. The rotor 2 is located radially inside the stator 3 and is rotatable relative to the stator 3.
Fig. 2 is a perspective view showing a schematic structure of the rotor core 21. In the present embodiment, the rotor core 21 has a cylindrical shape extending along the central axis P. The rotor core 21 has a through hole 21a extending along the center axis P. The shaft 20 is fixed to the rotor core 21 in a state where the shaft 20 axially penetrates the through-hole 21 a. Thereby, the rotor core 21 rotates together with the shaft 20.
In the present embodiment, the rotor core 21 has a plurality of magnet insertion holes 21b positioned at predetermined intervals in the circumferential direction. The magnet 22 is located in the magnet insertion hole 21 b. In addition, the magnet 22 may be located on the outer circumferential surface of the rotor core 21. In addition, the magnet 22 may be a ring magnet connected in the circumferential direction.
The rotor core 21 has a plurality of disk-shaped rotor core plates 23 formed in a predetermined shape and stacked in the thickness direction. As will be described later, the rotor core plate 23 is formed by punching the rolled steel plate R into a predetermined shape.
The rotor core 21 corresponds to the laminated body of the present invention. The rotor core plate 23 corresponds to a steel plate member of the present invention.
The stator 3 is housed in the housing 4. In the present embodiment, the stator 3 has a cylindrical shape. The rotor 2 is located radially inside the stator 3. That is, the stator 3 is disposed to be opposed to the rotor 2 in the radial direction. The rotor 2 is positioned radially inward of the stator 3 and is rotatable about a central axis P.
The stator 3 includes a stator core 31 and a stator coil 32. Stator coil 32 is wound around stator core 31. The detailed structure of the stator 3 will not be described.
(laminate manufacturing apparatus)
Fig. 3 is a diagram showing a schematic configuration of a laminate manufacturing apparatus 101 according to the embodiment of the present invention. The laminate manufacturing apparatus 101 is an apparatus for obtaining the rotor core 21 by laminating the rotor core plates 23 obtained by punching the rolled steel plate R into a predetermined shape in the thickness direction.
The laminate manufacturing apparatus 101 includes a cutting unit 102, a laminating unit 103, and a control unit 104. The laminated portion 103 corresponds to a laminated portion of steel plate members of the present invention.
The cutting section 102 cuts the sample T from a part in the longitudinal direction of the steel coil sheet R wound into a coil after rolling. Specifically, the cutting section 102 cuts the steel coil sheet R by a predetermined length to obtain a sample T for weight measurement.
The lamination portion 103 punches the coil steel plate R to form the rotor core plate 23, and laminates the punched rotor core plates 23 in the thickness direction in the fixed mold 131.
Specifically, the laminated part 103 includes a fixed mold 131, a movable mold 132, and a rotating laminated part 133. The fixed mold 131 and the movable mold 132 form the rotor core plate 23 by blanking the coil steel plate R. The fixed mold 131 has a housing portion 131a for stacking the punched rotor core plates 23 in the thickness direction therein.
When the fixed mold 131 is viewed in the punching direction of the coil steel plate R, the housing portion 131a has an inner surface having the same shape as the outer shape of the rotor core plate 23. The punching direction of the sheet steel coil R is the same as the moving direction of the movable die 132 with respect to the fixed die 131.
Therefore, the rotor core plates 23 punched out of the fixed mold 131 and the movable mold 132 are accommodated in the accommodating portion 131a of the fixed mold 131 in a state of being stacked in the thickness direction.
The movable mold 132 of the lamination portion 103 is configured to be capable of switching whether or not to form the caulking portion in the rotor core plate 23 in accordance with a control command output from the control portion 104. The caulking portions connect the rotor core plates 23 stacked in the thickness direction to each other. That is, the rotor core plate 23 formed with the caulking portions is connected to the rotor core plates 23 adjacent in the thickness direction. On the other hand, the rotor core plate 23 on which the caulking portions are not formed is not connected to the rotor core plate 23 overlapping in the thickness direction.
The structure of the caulking portion is the same as that of a caulking portion formed in a conventional rotor core plate, and thus detailed description thereof is omitted.
As described above, whether or not the caulking portions in the rotor core plates 23 are formed is switched by the movable mold 132, whereby the number of the rotor core plates 23 connected in the thickness direction can be changed in accordance with a control instruction of the control section 104. The number of stacked rotor core plates 23 connected to each other in the thickness direction may be adjusted by a method other than the above-described method of forming the caulking portion.
The plurality of rotor core plates 23 connected in a stacked state in the thickness direction in the housing portion 131a of the fixed mold 131 constitute a stacked block B.
The plurality of stacked blocks B formed as described above are stacked by rotating the stacked portion 133 by 90 degrees around the central axis P. The rotary stacking section 133 rotates the stacking block B by 90 degrees by, for example, a robot arm not shown. In the present embodiment, the laminated part 103 includes the rotary laminated part 133, but the rotary laminated part may not be included.
The rotor core 21 is configured by stacking a plurality of lamination blocks B. That is, the rotor core 21 has a plurality of lamination blocks B. In addition, although not particularly shown, the rotor core 21 is formed by welding the outer peripheral sides of the plurality of lamination blocks B in a state where the plurality of lamination blocks B are pressed in the lamination direction.
The control unit 104 controls the driving of the cutting unit 102 and the laminating unit 103. The control unit 104 drives the cutting unit 102 and cuts the sample T from the rolled steel sheet R. The weight of the test specimen T is measured by a not-shown weight scale, and the measurement result is input to the control section 104 as weight information.
The controller 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T. Specifically, the control unit 104 uses data including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 when determining the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T. Further, the weight of the sample T is preferably a weight per unit length. This makes it possible to easily determine the number of laminated rotor core plates 23 in the rotor core 21 from the weight of the sample T.
The control unit 104 includes a reference data storage unit 141 and a stacked sheet number determination unit 142.
For example, the reference data storage unit 141 has data including a relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 as a data table. The reference data storage unit 141 may have data of a mathematical expression indicating a relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21. That is, the reference data storage unit 141 may have information including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21.
Fig. 4 is a conceptual diagram of the table data TD stored in the reference data storage unit 141. As shown in fig. 4, in the table data TD, for example, the weight of the sample T is made to correspond to the number of laminated rotor core plates 23 in the rotor core 21.
The reference data storage unit 141 may be configured to store the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 for each steel sheet coil R. Thus, the reference data storage unit 141 can construct a database reflecting the relationship between the weight of each steel coil plate R and the number of stacked rotor core plates 23. Further, as described above, the reference data storage unit 141 stores the data of each steel sheet roll R, and thus the accuracy of the number of laminated rotor core plates 23 determined by the later-described laminated number determining unit 142 based on the weight of the sample T can be improved.
Further, another apparatus different from the laminate manufacturing apparatus 101 may have the reference data storage unit. In this case, the laminated number determining unit 142 of the control unit 104 accesses the reference data storage unit included in the other device, and reads data including the relationship between the weight of the sample T and the laminated number of the rotor core plates 23 in the rotor core 21.
The laminated number determining unit 142 determines the number of laminated rotor core plates 23 in the rotor core 21 using the data table TD stored in the reference data storage unit 141 based on the weight of the sample T. The laminated number determination unit 142 generates a control command for changing the number of laminated layers of the rotor core plate 23 of at least one laminated block B among the plurality of laminated blocks B of the rotor core 21, based on the determined number of laminated layers. The generated control command is output to the laminating unit 103.
In the laminated part 103, the number of laminated rotor core plates 23 of the laminated block B, for example, the laminated block B laminated last among the plurality of laminated blocks B constituting the rotor core 21 is adjusted in accordance with the control command.
In the laminated part 103, the number of laminated rotor core plates 23 of any one of the plurality of laminated blocks B constituting the rotor core 21 may be adjusted in accordance with the control command, or the number of laminated rotor core plates 23 of the plurality of laminated blocks B may be adjusted in accordance with the control command.
Fig. 5 shows a state where the coil steel plate R is divided into a plurality of divided coil steel plates R1, R2, R3 in the width direction perpendicular to the rolling direction. As shown in fig. 5, when the coil steel plate R is divided into a plurality of divided coil steel plates R1, R2, and R3, the thickness of the steel plate slightly differs depending on the positions thereof. For example, although the thickness of the portion of the rolled steel sheet R located at the center in the width direction is substantially uniform, the thickness of the portion of the rolled steel sheet R located at the end in the width direction is small.
Therefore, when the coil steel plate R is divided into the plurality of divided coil steel plates R1, R2, and R3 in the width direction as described above, the reference data storage unit 141 preferably stores the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 for each position of the divided coil steel plates R1, R2, and R3 in the coil steel plate R. Fig. 6 is a conceptual diagram illustrating an example of the databases TD _ R1, TD _ R2, and TD _ R3 that include the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21, which are stored in the reference data storage unit 141 for each of the split coil steel plates R1, R2, and R3.
Preferably, the control unit 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T using data including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 for each of the split-coil steel plates.
Thus, the laminated number determination unit 142 can determine the laminated number of the rotor core plates 23 in the rotor core 21 more accurately based on the weight of the sample T.
In the present embodiment, the laminated body manufacturing apparatus 101 is a laminated body manufacturing apparatus for obtaining the rotor core 21 by laminating the rotor core plates 23 obtained by punching a coil-shaped steel coil plate R into a predetermined shape in the thickness direction. The laminate manufacturing apparatus 101 includes: a cutting section 102 for cutting a sample T of a predetermined length from the steel coil sheet R; a lamination unit 103 that forms the rotor core plate 23 by punching the steel coil plate R from which the sample T is cut into the predetermined shape, and that obtains the rotor core 21 by laminating the rotor core plates 23 in the thickness direction, by the lamination unit 103; and a control unit 104, the control unit 104 controlling the number of laminated rotor core plates 23 laminated by the lamination unit 103, based on the number of laminated rotor core plates 23 in the rotor core 21 determined based on the weight of the sample T.
Thus, even when there is variation in the thickness of the rolled steel sheets R, the appropriate number of stacked rotor core plates 23 in the rotor core 21 can be obtained from the weight of the sample T of the rolled steel sheets R without measuring the thickness of the rolled steel sheets R. Although errors are likely to occur in the measurement of the thickness of the rolled steel sheet R due to the measurement method and the measuring instrument, the measurement errors can be reduced by using the weight of the test piece T of the rolled steel sheet R as described above.
Therefore, the length of the rotor core 21 in the axial direction can be adjusted easily and accurately by the number of laminated rotor core plates 23 in consideration of variations in the thickness of the rolled steel sheets R.
The control unit 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21.
This makes it possible to easily determine the number of laminated rotor core plates 23 in the rotor core 21 from the weight of the sample T. Therefore, the length of the rotor core 21 in the axial direction can be adjusted more easily by the number of laminated rotor core plates 23.
The control unit 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T using data including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21.
Thus, the number of laminated rotor core plates 23 in the rotor core 21 can be easily determined from the weight of the sample T without increasing the computational load of the control unit 104. Therefore, the length of the rotor core 21 in the axial direction can be adjusted more easily by the number of laminated rotor core plates 23.
The weight of the sample T is the weight of the sample T per unit length. This makes it possible to easily determine the number of laminated rotor core plates 23 in the rotor core 21 from the weight of the sample T. Therefore, the length of the rotor core 21 in the axial direction can be adjusted more easily by the number of laminated rotor core plates 23.
The laminated portion 103 is formed by laminating a plurality of laminated blocks B, which are formed by laminating a plurality of rotor core plates 23, to form the rotor core 21. In at least one of the plurality of lamination blocks B, the control unit 104 changes the number of lamination of the rotor core plates 23 laminated by the lamination unit 103 in accordance with the number of lamination of the rotor core plates 23 determined based on the weight of the sample T.
This makes it possible to easily change the number of laminated rotor core plates 23. Therefore, the number of laminated rotor core plates 23 in the rotor core 21 can be easily changed according to the number of laminated rotor core plates 23 determined based on the weight of the sample T.
The coil steel plate R is divided into a plurality of divided coil steel plates R1, R2, R3 in the width direction perpendicular to the rolling direction. The controller 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the test specimen T for each of the split coil steel plates R based on the split position of the split coil steel plates R1, R2, R3 in the coil steel plate R.
Generally, the thickness of the rolled steel sheet R by roll rolling differs depending on the position in the width direction of the rolled steel sheet R. Therefore, the thicknesses of the split rolled steel sheets R1, R2, and R3 also differ depending on the split position in the width direction of the rolled steel sheet R. Therefore, as described above, by changing the relationship between the weight of the test specimen T and the number of laminated rotor core plates 23 in the rotor core 21 in accordance with the dividing positions in the width direction of the divided steel sheets R1, R2, and R3 in the steel sheet R, the number of laminated rotor core plates 23 corresponding to the variation in the thickness of the steel sheet R can be set.
Therefore, the length of the rotor core 21 in the axial direction can be adjusted with higher accuracy by the number of laminated rotor core plates 23, taking into account variations in the thickness dimension of the rolled steel sheets R.
The control unit 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T using data including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21 for each of the split steel sheets.
Accordingly, the length of the rotor core 21 in the axial direction can be adjusted more easily and more accurately by the number of laminated rotor core plates 23, taking into account variations in the thickness dimension at the position of the rolled steel sheet R in the width direction.
(method of producing laminate)
Next, a method for manufacturing the rotor core 21 will be described. Fig. 7 is a flowchart illustrating an outline of the method of manufacturing the rotor core 21.
First, as step S1, a predetermined length is cut from the steel coil sheet R by the cutting section 102 of the laminate manufacturing apparatus 101, and a sample T is obtained.
Next, as step S2, the weight of the test specimen T is measured by a not-shown weight scale. Thereafter, in step S3, the laminated number determination unit 142 of the control unit 104 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the measured weight of the sample T. The laminated number determination unit 142 generates a control command and outputs the control command to the laminated unit 103.
The laminated number determining unit 142 determines the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T using data stored in the reference data storage unit 141 of the control unit 104 and including the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21. The laminated number determining unit 142 may determine the number of laminated rotor core plates 23 in the rotor core 21 from the weight of the sample T by using a mathematical expression including a relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21.
In step S4, the stacking unit 103 stacks the rotor core plates 23 by the number corresponding to the input control command. At this time, the lamination unit 103 adjusts the number of rotor core plates 23 of the laminated block B laminated last among the plurality of laminated blocks B constituting the rotor core 21, in accordance with the input control command.
This makes it possible to obtain the rotor core 21 having a more accurate axial dimension.
Here, step S1 corresponds to the cutting process, step S3 corresponds to the stacked sheet number determining process, and step S4 corresponds to the stacking process.
As described above, the laminate manufacturing method of the present embodiment is a laminate manufacturing method for obtaining the rotor core 21 by laminating the rotor core plates 23 obtained by punching the rolled steel coil plate R into a predetermined shape in the thickness direction. The method for manufacturing the laminated body comprises the following steps: a cutting step of cutting a sample T of a predetermined length from the coil sheet R; a laminated number confirmation step of confirming the number of laminated rotor core plates 23 in the rotor core 21 based on the weight of the sample T; and a lamination step of punching the coil steel sheet R from which the sample T is cut out into the predetermined shape to form the rotor core plate 23 according to the number of laminations, and laminating the rotor core plates 23 in the thickness direction to obtain the rotor core 21.
Thus, even when there is variation in the thickness of the rolled steel sheets R, the appropriate number of stacked rotor core plates 23 in the rotor core 21 can be obtained from the weight of the sample T of the rolled steel sheets R without measuring the thickness of the rolled steel sheets R. Although errors are likely to occur in the measurement of the thickness of the rolled steel sheet R due to the measurement method and the measuring instrument, the measurement errors can be reduced by using the weight of the test piece T of the rolled steel sheet R as described above.
Therefore, the length of the rotor core 21 in the axial direction can be adjusted easily and accurately by the number of laminated rotor core plates 23 in consideration of variations in the thickness of the rolled steel sheets R.
In the laminated number determining step, the number of laminated rotor core plates 23 in the rotor core 21 is determined based on the relationship between the weight of the sample T and the number of laminated rotor core plates 23 in the rotor core 21.
This makes it possible to easily determine the number of laminated rotor core plates 23 in the rotor core 21 from the weight of the sample T. Therefore, the length of the rotor core 21 in the axial direction can be adjusted more easily by the number of laminated rotor core plates 23.
In the laminated number determining step, the laminated number of the rotor core plates 23 in the rotor core 21 is determined from the weight of the sample T using data including the relationship between the weight of the sample T and the laminated number of the rotor core plates 23 in the rotor core 21.
Thus, the number of laminated rotor core plates 23 in the rotor core 21 can be easily determined from the weight of the sample T without increasing the computational load of the control unit 104. Therefore, the length of the rotor core 21 in the axial direction can be adjusted more easily by the number of laminated rotor core plates 23.
In the lamination step, the rotor core 21 is formed by laminating a plurality of lamination blocks B, which are formed by laminating a plurality of rotor core plates 23. In the laminate manufacturing method, when the lamination block B is formed in the lamination step, the number of lamination of the rotor core plates 23 is changed in at least one lamination block B among the plurality of lamination blocks B in accordance with the number of lamination of the rotor core plates 23 determined based on the weight of the test specimen T.
This makes it possible to easily change the number of laminated rotor core plates 23. Therefore, the number of laminated rotor core plates 23 in the rotor core 21 can be easily changed according to the number of laminated rotor core plates 23 determined based on the weight of the sample T.
(other embodiments)
Although the embodiments of the present invention have been described above, the embodiments are merely examples for carrying out the present invention. Therefore, the present invention is not limited to the above-described embodiment, and the embodiment can be appropriately modified and implemented without departing from the spirit of the present invention.
In the above embodiment, the structure of the rotor core 21 is explained. However, if the laminated body is obtained by laminating steel plate members punched out of a steel coil plate into a predetermined shape in the thickness direction, the laminated body manufacturing apparatus or the laminated body manufacturing method described in the above embodiment may be applied to manufacturing other than the rotor core. For example, the laminate manufacturing apparatus or the laminate manufacturing method described in the above embodiments may be applied to manufacturing of a stator core.
In the embodiment, the rotor core plate 23 is an electromagnetic steel plate. However, the rotor core plate may be a plate member other than the electromagnetic steel plate.
In the above embodiment, the rotor core plates 23 punched out of the fixed mold 131 and the movable mold 132 are accommodated in the accommodating portion 131a of the fixed mold 131 in a state of being stacked in the thickness direction. However, the stationary mold may not have a housing portion therein. The rotor core plates punched out of the stationary mold and the movable mold may be laminated in the thickness direction outside the mold.
In the described embodiment, the motor is a so-called permanent magnet motor. In a permanent magnet motor, the rotor has magnets. However, the motor 1 may be a motor without a magnet, such as an induction motor, a reluctance motor, a switched reluctance motor, or a wound field motor.
Industrial applicability of the invention
The present invention is applicable to a laminate manufacturing apparatus for obtaining a laminate by laminating steel sheet members obtained by punching a rolled steel sheet into a predetermined shape in a thickness direction.
Description of the symbols
1 Motor
2 rotor
3 stator
4 outer cover
20 shaft
21 rotor core
21a through hole
21b magnet insertion hole
22 magnet
23 rotor iron core board (Steel plate component)
31 stator core
32 stator coil
101 laminated body manufacturing device
102 cutting part
103 laminated part (Steel plate laminated part)
104 control part
131 fixed mould
131a accommodating part
132 moving mould
133 rotating laminated part
P center shaft
R coil steel plate
R1, R2, R3 split coil steel plate
T specimen
B laminated block
TD, TD _ R1, TD _ R2, and TD _ R3 represent data.
Claims (11)
1. A laminate manufacturing apparatus for obtaining a laminate by laminating steel sheet members, each of which is obtained by punching a rolled steel sheet into a predetermined shape, in a thickness direction, the laminate manufacturing apparatus comprising:
a cutting section that cuts a sample having a predetermined length from the rolled steel sheet;
a steel plate member laminating section that punches the steel plate coil from which the sample has been cut out into the predetermined shape to form the steel plate member, and that laminates the steel plate members in a thickness direction to obtain the laminate; and
and a control unit that controls the number of stacked steel plate members stacked by the steel plate member stacking unit, based on the number of stacked steel plate members in the stacked body determined based on the weight of the sample.
2. The laminate manufacturing apparatus according to claim 1,
the control unit determines the number of stacked steel plate members in the stacked body based on a relationship between the weight of the sample and the number of stacked steel plate members in the stacked body.
3. The laminate manufacturing apparatus according to claim 2,
the control unit determines the number of stacked steel plate members in the stacked body based on the weight of the sample using data including a relationship between the weight of the sample and the number of stacked steel plate members in the stacked body.
4. The laminate manufacturing apparatus according to any one of claims 1 to 3,
the weight of the sample is the weight of the sample per unit length.
5. The laminate manufacturing apparatus according to any one of claims 1 to 4,
the steel plate member laminated portion is formed by laminating a plurality of laminated blocks formed by laminating a plurality of the steel plate members,
in at least one of the plurality of lamination blocks, the control unit changes the number of lamination of the steel plate members laminated by the steel plate member lamination unit, based on the number of lamination of the steel plate members determined based on the weight of the sample.
6. The laminate manufacturing apparatus according to claim 1,
the coil steel plate is divided into a plurality of divided coil steel plates in a width direction perpendicular to a rolling direction,
the control unit determines the number of stacked steel plate members in the stacked body based on the weight of the sample for each of the split coil steel plates, based on the split position of the split coil steel plate in the coil steel plate.
7. The laminate manufacturing apparatus according to claim 6,
the control unit determines the number of stacked steel plate members in the stacked body based on the weight of the sample using data including a relationship between the weight of the sample and the number of stacked steel plate members in the stacked body for each of the split-coil steel plates.
8. A method for manufacturing a laminate, in which a laminate is obtained by laminating steel sheet members obtained by punching a rolled steel sheet into a predetermined shape in a thickness direction, the method comprising:
a cutting step of cutting a sample having a predetermined length from the coil steel sheet;
a laminated number determination step of determining the number of laminated steel plate members in the laminated body based on the weight of the sample; and
and a laminating step of punching the steel sheet coil from which the sample is cut out into the predetermined shape to form the steel sheet member, based on the number of laminated sheets, and laminating the steel sheet members in a thickness direction to obtain the laminated body.
9. The laminate manufacturing method according to claim 8,
in the stacked-layer number determination step, the number of stacked layers of the steel plate members in the stacked body is determined based on a relationship between the weight of the sample and the number of stacked layers of the steel plate members in the stacked body.
10. The laminate manufacturing method according to claim 9,
in the laminated number determining step, the laminated number of the steel plate members in the laminated body is determined based on the weight of the sample using data including a relationship between the weight of the sample and the laminated number of the steel plate members in the laminated body.
11. The laminate manufacturing method according to any one of claims 8 to 10,
in the above-mentioned laminating step, the adhesive is applied to the substrate,
the laminated body is formed by laminating a plurality of laminated blocks formed by laminating a plurality of the steel plate members,
in the forming of the lamination block in the lamination step, the number of lamination of the steel plate members is changed in at least one lamination block among the plurality of lamination blocks in accordance with the number of lamination of the steel plate members determined based on the weight of the test piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-058714 | 2020-03-27 | ||
| JP2020058714A JP2021158852A (en) | 2020-03-27 | 2020-03-27 | Stacked body manufacturing apparatus and stacked body manufacturing method |
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| Publication Number | Publication Date |
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| CN113442545A true CN113442545A (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110178673.6A Withdrawn CN113442545A (en) | 2020-03-27 | 2021-02-09 | Laminate manufacturing device and laminate manufacturing method |
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| JP2021158852A (en) | 2021-10-07 |
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Application publication date: 20210928 |