Method for adjusting laminated core thickness and thickness adjusting device

Abstract

To provide a technology in which a laminated core thickness can be easily adjusted without redesigning a laminated core manufacturing device itself.SOLUTION: One or more of core board materials A1 are separated from a laminated core A by bringing the laminated core A into contact with a substrate member 1 provided with a separating blade 11 having a projection height corresponding to one or more of the core board materials A1 consisting of the laminated core A, and then sliding them relatively to each other.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method and device for adjusting the thickness of a laminated core, which is made by stacking a plurality of core plates. [Background technology]

[0002] The core of an electric motor is composed of a laminated core in which a plurality of core plate materials (generally electromagnetic steel plates) are laminated. The thickness of such a laminated core is generally controlled by the number of laminated core plate materials. However, the thickness of the laminated core also varies due to the variation in the thickness of the laminated core plate materials, and as a result, the thickness of the laminated core may deviate from the allowable range. Therefore, in order to keep the thickness of the laminated core within the allowable range, a general measure has been taken in the past to grasp the variation in the thickness of the core plate materials in advance and change the manufacturing conditions, such as the lamination conditions, according to the actual thickness of the core plate materials (for example, Patent Document 1).

[0003] However, such conventional measures make the manufacturing conditions and the manufacturing equipment complicated. Therefore, general laminated core manufacturing equipment cannot be used and the manufacturing equipment itself must be modified. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5418186 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a technique for easily adjusting the thickness of a laminated core without modifying the manufacturing device for the laminated core itself. [Means for solving the problem]

[0006] According to one aspect of the present invention, there is provided the following method for adjusting the thickness of a laminated core. A method for adjusting the thickness of a laminated core, which is formed by laminating a plurality of core plate materials, comprising the steps of: A method for adjusting the thickness of a laminated core, comprising contacting a laminated core with a base member equipped with a peeling blade having a protruding height equivalent to that of one or more core plate materials that make up the laminated core and sliding them relative to one another to peel off one or more core plate materials from the laminated core.

[0007] According to another aspect of the present invention, there is provided the following thickness adjusting device for a laminated core. A laminated core thickness adjustment device that adjusts the thickness of a laminated core formed by stacking a plurality of core plate materials, A device for adjusting the thickness of a laminated core, comprising: a substrate member equipped with a peeling blade having a protruding height equivalent to that of one or more core plate materials that constitute the laminated core; a holding mechanism that holds the laminated core so as to abut against the substrate member; and a sliding mechanism that slides the substrate member and the holding mechanism relative to one another. Effect of the Invention

[0008] According to the present invention, the thickness of the laminated core can be easily adjusted without modifying the manufacturing device for the laminated core itself. [Brief description of the drawings]

[0009] [Figure 1] 1 is an explanatory diagram conceptually showing one embodiment of a method for adjusting the thickness of a laminated core according to the present invention; [Diagram 2] 1 is a schematic perspective view showing an overall configuration of a laminated core thickness adjustment device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] FIG. 1 conceptually shows an embodiment of the method for adjusting the thickness of a laminated core according to the present invention. In the present invention, the thickness of a laminated core formed by laminating a plurality of core plates is adjusted. Specifically, in the embodiment of FIG. 1, a laminated core A and a substrate member 1 having a peeling blade 11 with a protruding height equivalent to one of the core plates A1 constituting the laminated core A are brought into contact with each other and slid relatively to each other, thereby peeling one core plate A1 from the laminated core A. More specifically, first, the lower surface of the laminated core A and the upper surface of the substrate member 1 are brought into contact with each other (FIG. 1(a)). Next, the substrate member 1 is slid in one direction (to the right in FIG. 1) (FIGS. 1(b)-(c)). This causes one core plate A1 to be peeled off from the laminated core A (FIG. 1(d)). As a result, the thickness of the laminated core A is reduced by one core plate A1. Thereafter, the operations of Figs. 1(a) to (d) are repeated as necessary to reduce the thickness of the laminated core A by one core plate material A1 at a time until the thickness falls within the allowable range.

[0011] For example, in the following case, the operations of Figs. 1(a) to (d) are repeated three times to peel off three core plate materials A1, resulting in a final thickness of 57.61 mm. Thickness tolerance of laminated core A: 57.60±0.05mm Initial thickness of laminated core A: 57.91mm Core plate A1 thickness: 0.10mm

[0012] 1, the substrate member 1 is slid in one direction (to the right in FIG. 1), but the laminated core A may be slid in the other direction (to the left in FIG. 1). In short, in the present invention, the laminated core A and the substrate member 1 may be brought into contact with each other and slid relatively. In addition, in the embodiment of Figure 1, the peeling blade 11 protrudes from the upper surface of the substrate member 1 so as to abut the lower surface of the laminated core A and the upper surface of the substrate member 1, but the peeling blade 11 may also protrude from the lower surface of the substrate member 1 so as to abut the upper surface of the laminated core A and the lower surface of the substrate member 1. In addition, in the embodiment of Figure 1, the peeling blade 11 is a single-edged blade so that the core plate material A1 is peeled off when the substrate member 1 is slid in one direction (to the right in Figure 1), but the peeling blade 11 may be a double-edged blade so that the core plate material A1 is also peeled off when the substrate member 1 is slid in the other direction (to the left in Figure 1). 1, the protruding height of the peeling blade 11 corresponds to one core plate material A1 and the core plate materials A1 are peeled one by one, but the protruding height of the peeling blade 11 may correspond to multiple core plate materials A1 and multiple core plate materials A1 may be peeled one by one. The protruding height of the peeling blade 11 can be changed and adjusted by changing the number and thickness of shim plates 12 inserted under the peeling blade 11 as shown in FIG. 1, for example.

[0013] Next, a description will be given of a laminated core thickness adjusting device according to the present invention. Fig. 2 is a schematic perspective view showing the overall configuration of a laminated core thickness adjusting device according to one embodiment of the present invention. The laminated core thickness adjustment device (hereinafter simply referred to as the “thickness adjustment device”) X shown in FIG. 2 includes a substrate member 1, a holding mechanism 2 that holds the laminated core A so as to abut against the substrate member 1, and a sliding mechanism 3 that slides the substrate member 1 and the holding mechanism 2 relative to one another.

[0014] 1, the substrate member 1 in this embodiment is provided with a peeling blade 11 having a protruding height equivalent to that of one of the core plate materials A1 constituting the laminated core A. In this embodiment, the protruding height of the peeling blade 11 can be changed and adjusted by changing the number and thickness of the shim plates 12 inserted under the peeling blade 11, as described above. That is, the thickness adjusting device X further includes a blade height adjusting mechanism 4 for adjusting the protruding height of the peeling blade 11, and the shim plates 12 form a main part of the blade height adjusting mechanism 4.

[0015] 1 is for manually adjusting the protruding height of the peeling blade 11, but by using a well-known actuator or the like, it is possible to automatically adjust the protruding height of the peeling blade 11. That is, a control unit (not shown) is provided for controlling the operation of the entire device, and this control unit controls the blade height adjustment mechanism 4 according to the thickness of the core plate material A1 input in advance, thereby automatically adjusting the protruding height of the peeling blade 11.

[0016] 2 again, in this embodiment, the holding mechanism 2 includes an air chuck 21 as holding means for holding the laminated core A, and an electric cylinder 22 as lifting means for lifting the air chuck 21. That is, in this embodiment, the holding mechanism 2 holds the laminated core A with the air chuck 21, while lowering the air chuck 21 with the electric cylinder 22, thereby bringing the lower surface of the laminated core A into contact with the upper surface of the substrate member 1, as shown in Fig. 1. The positional relationship between the laminated core A and the substrate member 1 shown in Fig. 2 corresponds to the positional relationship in Fig. 1(d).

[0017] In this embodiment, the sliding mechanism 3 includes an electric actuator 31 as a sliding means for sliding the substrate member 1. That is, in this embodiment, the sliding mechanism 3 slides the substrate member 1 with the electric actuator 31, thereby causing the substrate member 1 and the holding mechanism 2 to slide relative to each other, and repeatedly performs the operations of FIGS. 1(a) to (d).

[0018] 2, the thickness adjusting device X further includes a thickness measuring mechanism 5 for measuring the thickness of the laminated core. The thickness measuring mechanism 5 includes a mounting table 51 on which the laminated core A is mounted, a gauge 52 disposed above the mounting table 51, and a servo cylinder 53 for raising and lowering the gauge 52. That is, in this embodiment, the thickness measuring mechanism 5 lowers the gauge 52 from the initial height position in FIG. 2 until it comes into contact with the upper surface of the laminated core A mounted on the mounting table 51, and measures the thickness of the laminated core A based on the height position at the time of contact.

[0019] In this embodiment, the above-mentioned control unit can calculate the number of core plate materials A1 to be peeled off from the laminated core A based on the difference between the thickness of the laminated core A obtained by the thickness measuring mechanism 5 and the target value of the thickness of the laminated core A inputted in advance, and the plate thickness of the core plate material A1 of the laminated core inputted in advance. For example, in the following case, the control unit calculates that the number of core plate materials A1 to be peeled from the laminated core A is three. The control unit then repeats the operations of Fig. 1(a) to (d) three times to peel off the three core plate materials A1. As a result, the final thickness of the laminated core A becomes 57.61 mm, which falls within the allowable range. - Thickness of laminated core A (measured value): 57.91 mm - Target thickness of laminated core A (tolerance range): 57.60 ± 0.05 mm Core plate A1 thickness: 0.10mm

[0020] Here, in this embodiment, the holding mechanism 2 is attached to a support member 6. The support member 6 can be moved in the direction of the arrow in FIG. 2 by the operation of an air cylinder 61. That is, in this embodiment, the holding mechanism 2 can be moved between a position on the substrate member 1 and a position on the mounting table 51 of the thickness measurement mechanism 5, and thus the laminated core A on the mounting table 51 of the thickness measurement mechanism 5 can be moved to a position on the substrate member 1. Note that, in order to check the final thickness of the laminated core A, the laminated core A can be moved from the substrate member 1 onto the mounting table 51 of the thickness measurement mechanism 5, and the final thickness of the laminated core A can be measured by the thickness measurement mechanism 5. [Explanation of symbols]

[0021] A Laminated core A1 Core plate X Laminated core thickness adjustment device 1. Substrate material 11 Peeling blade 12 Shim plate 2 Retention mechanism 21 Air chuck 22 Electric cylinder 3. Sliding mechanism 31 Electric Actuator 4 Blade height adjustment mechanism 5 Thickness measurement mechanism 51 Placement table 52 Probe 53 Servo Cylinder 6 Supporting member 61 Air Cylinder

Claims

1. A method for adjusting the thickness of a laminated core, which is formed by laminating a plurality of core plate materials, comprising the steps of: A method for adjusting the thickness of a laminated core, comprising contacting a laminated core with a base member equipped with a peeling blade having a protruding height equivalent to one or more core plate materials that make up the laminated core and sliding them relative to one another to peel one or more core plate materials from the laminated core.

2. A laminated core thickness adjustment device that adjusts the thickness of a laminated core formed by stacking a plurality of core plate materials, A device for adjusting the thickness of a laminated core, comprising: a base member equipped with a peeling blade having a protruding height equivalent to that of one or more core plate materials that constitute the laminated core; a holding mechanism that holds the laminated core so as to abut against the base member; and a sliding mechanism that slides the base member and the holding mechanism relative to one another.

3. The laminated core thickness adjusting device according to claim 2 , further comprising a blade height adjusting mechanism for adjusting a protruding height of the peeling blade.

4. Further comprising a control unit for controlling the operation of the entire device, 4. The laminated core thickness adjusting device according to claim 3, wherein the control unit adjusts the protruding height of the stripping blade by controlling the blade height adjusting mechanism in accordance with a thickness of the core plate material input in advance.

5. The apparatus further includes a control unit for controlling the operation of the entire apparatus, and a thickness measuring mechanism for measuring the thickness of the laminated core, The control unit calculates the number of core plate materials to be peeled off from the laminated core according to the difference between the thickness of the laminated core obtained by the thickness measurement mechanism and a target value for the thickness of the laminated core input in advance, and the plate thickness of the core plate material of the laminated core input in advance. A thickness adjustment device for a laminated core as described in any one of claims 2 to 4.

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