JP2006246586A - Laminated core forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated core forming apparatus capable of forming the shapes of the inside and outside diameters and slots with high accuracy by processing them in one process step and in series. <P>SOLUTION: This laminated core forming apparatus 1 is structured so that an inside diameter forming section is fixed; a work receiver 2 is supported by a first pressurizing section 3; a pressing section 5 is moved by a second pressurizing section 7; and an outside diameter forming section 8 is moved by a third pressurizing section 9. Therefore, when the applied pressure of the second pressurizing section is made higher than that of the first pressurizing section, the laminated core 10 is pressed by the pressure section, lowers with the work receiver, and is squeezed by the inside diameter forming section to form an inside diameter. When the applied pressure of the third pressurizing section is made higher than that of the second pressurizing section, the outside diameter forming section lowers to form an the outside diameter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a molding apparatus for accurately molding a shape including inner and outer diameters of a laminated core forming a stator of an electric rotating body.

  In the conventional laminated core forming apparatus, as shown in FIG. 2, a slot forming arrow (slot forming portion) 6, an inner diameter core metal (inner diameter forming portion) 4, and an outer diameter ironing ring (outer diameter forming portion) 8 are incorporated. , Because the laminated core (workpiece) 9 is pushed in and the inner diameter, slot, and outer diameter of the laminated core are pushed in and formed simultaneously, high load is required, and distortion is inevitable due to simultaneous forming, making it difficult to form with high precision Met.

  In addition, in order to form the inner diameter, slot, and outer diameter of the laminated core in series as in the present invention, at least two molding steps are required, and it is difficult to form with high accuracy, and the equipment cost and processing time are reduced. There was a problem of increasing.

  The present invention has been made in view of the above problems, and its purpose is to process the inner diameter, slot, and outer diameter of the laminated core in one step and in a series so that the inner and outer diameters and the shape of the slot can be made with high accuracy. An object of the present invention is to provide a moldable laminated core molding apparatus.

The present invention provides, as means for solving the above problems, a laminated core forming apparatus according to each of the claims.
The laminated core molding apparatus according to claim 1 is configured to mold a workpiece receiving portion 2 that supports the laminated core 10, a first pressure unit 3 that supports the workpiece receiving portion 2, and an inner diameter of the laminated core 10. The inner diameter forming part 4, the presser part 5 that presses and moves the laminated core 10 against the workpiece receiving part 2, the slot forming part 6 that forms a slot, and the second pressurization that moves the presser part 5 and the slot forming part 6. An outer diameter forming portion 8 that holds the portion 7, the presser portion 5, and the second pressurizing portion 7, and that forms the outer diameter of the laminated core 10; and a third pressurizing portion 9 that moves the outer diameter forming portion 8. It is comprised from. In particular, the inner diameter forming portion 4 is fixed, the workpiece receiving portion 2 is supported by the first pressurizing portion 3, and the presser portion 5 is moved by the second pressurizing portion 7. When the pressing force is made larger than the pressing force of the first pressurizing unit 3, the laminated core 10 is pressed by the presser unit 5, and the inner diameter forming unit 4 is lowered and fixed together with the work receiving unit 2, and is rubbed. The inner diameter comes to be molded. Further, since the outer diameter molding unit 8 is moved by the third pressurizing unit 9, the pressurizing force of the third pressurizing unit 9 is made larger than the pressurizing force of the second pressurizing unit 7 in the previous state. In this case, the outer diameter molding portion 8 is lowered and the outer diameter can be molded. Therefore, the inner and outer diameters of the laminated core 10 and the slot shape can be formed with high accuracy in one step.

  In the laminated core forming apparatus according to claim 2, the first pressurizing unit, the second pressurizing unit, and the third pressurizing unit are used as the pressurizing cylinder, and thereby, the control of the pressurizing force and the moving amount is easy. Thus, high-precision molding can be performed at high speed.

  Hereinafter, a laminated core molding apparatus according to an embodiment of the present invention will be described with reference to FIG. Before describing the laminated core molding apparatus of the present invention, first, the conventional laminated core molding apparatus will be described more specifically based on FIG. A conventional laminated core molding apparatus 1 includes a workpiece receiver (work receiving portion) 2 that supports a laminated core 10 that is a workpiece, a first pressure unit 3 that supports the workpiece receiver 2, and an inner diameter molding that molds the inner diameter of the laminated core 10. Part 4, slot forming arrow (slot forming part) 6 for forming a slot of laminated core 10, outer diameter forming part 8 for forming the outer diameter of laminated core 10, work holder for pressing and moving laminated core 10 against work receiver 2 (Presser part) 5 and a finishing cylinder (second pressurizing part) 7 for moving the work holder 5 and the like.

In this case, in the conventional laminated core forming apparatus 1, the inner diameter forming portion 4 and the slot forming arrow 6 disposed outside the inner diameter forming portion 4 are installed with their positions fixed inside the work receiver 2. ing. Further, the outer diameter forming portion 8 is also installed outside the work receiver 2 with its position fixed.
A receiving recess is formed on the lower surface of the work holder 5 along the shape of the tip so that the tip of the inner diameter forming portion 4 and the slot forming arrow 6 can be received.

  In such a conventional laminated core forming apparatus 1, as shown in FIG. 2A, it is set on the work receiver 2 so as to support the lower peripheral edge of the laminated core 10. In this state, the finishing cylinder 7 is actuated to lower the work retainer 5 and bring the work retainer 5 into contact with the laminated core 10. At this time, the 1st pressurizing part 3 applies back pressure to the workpiece receiver 2 (refer FIG.2 (b)). Next, as shown in FIG. 2 (c), the pressurizing force of the finishing cylinder 7 is increased, the work clamp 5 is further lowered, and the laminated core 10 is pushed into the inner diameter forming portion 4, the slot forming arrow 6 and the outer diameter forming portion 8. The inner and outer diameters and slots are simultaneously formed in the laminated core 10. Next, as shown in FIG. 2 (d), the first pressure unit 3 is pressurized, the workpiece receiver 2 is raised, and the laminated core 10 is removed from the inner diameter molding unit 4, the slot molding arrow 6 and the outer diameter molding unit 8. .

  As described above, in the conventional laminated core forming apparatus 1, in order to simultaneously form the inner and outer diameters and slots in the laminated core 10, it is necessary to apply a high load pressure to the finishing cylinder 7 and avoid the occurrence of distortion. Therefore, it was difficult to mold the laminated core 10 with high accuracy.

  The present invention solves this problem of the prior art. Next, the laminated core forming apparatus 1 according to the embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected and demonstrated to the component which has the same role. The laminated core molding apparatus 1 includes a workpiece receiving portion 2 that supports the laminated core 10, a first pressure unit 3 that supports the receiving portion 2, an inner diameter forming portion 4 that molds the inner diameter of the laminated core 10, and the laminated core 10. Presser part 5 that is pressed and moved by the receiving part 2, slot forming part 6 that forms a slot of the laminated core 10, second pressurizing part 7 that moves the presser part 5 and the slot forming part 6, presser part 5 and slot forming part 6 and the second pressurizing part 7, an outer diameter forming part 8 for forming the outer diameter of the laminated core 10, and a third pressurizing part 9 for moving the outer diameter forming part 8.

  The workpiece receiving portion 2 is formed of a stepped cylindrical body composed of a small outer shape portion 21 and a large outer shape portion 22 whose upper ends are opened and lower ends are closed, and the closed bottom portion 23 is supported by the first pressurizing portion 3. Yes. The opening end surface 21a of the work receiving portion 2 is substantially the same size as the laminated core 10, and the opening end surface 21a supports the peripheral edge of the lower surface of the laminated core 10. The 1st pressurization part 3 is a pressurization cylinder used as the piston body 31 and the cylinder part 32, and the workpiece | work receiving part 2 raises / lowers according to the vertical motion of the piston body by fluid pressure.

  Inside the work receiving portion 2, an inner diameter forming portion 4 for forming the inner diameter of the laminated core 10 is attached and installed on a fixed base 41. Therefore, even if the workpiece receiving portion 2 is moved up and down by the first pressurizing portion 3, the inner diameter forming portion 4 remains fixed without moving. A presser portion 5 and a slot forming portion 6 are disposed above the laminated core 10. The presser part 5 and the slot forming part 6 can be lowered by the second pressurizing part 7, and the slot forming part 6 can also be raised by the second pressurizing part 7.

  The second pressurizing part 7 is a pressurizing cylinder composed of two piston bodies 71A and 71B and two cylinder parts 72A and 72B which are respectively coupled. The two piston bodies 71A and 71B are connected in an I shape, and the slot forming portion 6 is fixed to the lower piston body 71B. Accordingly, the slot forming portion 6 also moves up and down as the piston body 71B moves up and down. The cylinder part 72 </ b> B is placed on the periphery of the presser part 5. An upper surface recess 51 capable of receiving the piston body 71 </ b> B of the second pressurizing unit 7 is provided on the upper surface of the presser unit 5, and a lower surface capable of receiving the upper end portion of the inner diameter molding unit 4 on the lower surface of the presser unit 5. Recesses 52 are respectively formed.

  An outer diameter forming portion 8 having a hanging bell shape is provided so as to hold the presser portion 5, the slot forming portion 6 and the second pressurizing portion 7 and surround them. The upper part of the outer diameter molding part 8 is connected to the third pressurizing part 9, and the outer diameter molding part 8 moves up and down by the operation of the fluid pressure of the third pressurizing part 9. The third pressurizing unit 9 is also a pressurizing cylinder including a piston body 91 and a cylinder unit 92.

  The two cylinder parts 72A and 72B of the second pressurizing part 7 can slide in the outer diameter molding part 8, and the first action chamber 73 is located above the piston body 71A and the second action is located below the piston body 71A. A chamber 74 is formed. By introducing the pressurized fluid into the first working chamber 73, the piston bodies 71 </ b> A and 71 </ b> B are lowered, and a pressing force can be applied to the presser portion 5 and the slot forming portion 6. Further, by introducing the pressurized fluid into the second working chamber 74, the piston bodies 71A and 71B can be raised.

The operation of the laminated core forming apparatus according to the embodiment of the present invention having the above configuration will be described with reference to FIG.
First, as shown in FIG. 1A, the laminated core 10 is set on the open end surface 21 a of the workpiece receiving portion 2. At this time, the position of the workpiece receiving portion 2 is in the initial state. Next, as shown in FIG. 1B, 1 ton of back pressure is applied to the first pressurizing unit 3, and 20 ton of pressurizing force is applied to the first working chamber 73 of the second pressurizing unit 7 to hold the presser unit. 5, while pushing the laminated core 10, the piston bodies 71 </ b> A and 71 </ b> B are lowered and the slot forming portion 6 is inserted into the laminated core 10. In this way, a slot is formed in the laminated core 10.

  Further, if this state is continued, as shown in FIG. 1 (c), the second pressurizing unit 7 lowers the presser unit 5, the slot forming unit 6, the laminated core 10 and the work receiving unit 2 together, and works The inner diameter molding portion 4 fixed in the receiving portion 2 is inserted into the laminated core 10. In this way, the inner diameter is formed in the laminated core 10.

Next, as shown in FIG. 1 (d), the applied pressure of the second pressurizing unit 7 is removed, the applied pressure of 33 tons is applied to the third pressurizing unit 8, and the outer diameter forming unit 8 is lowered to laminate The outer diameter of the core 10 is formed.
In this way, the laminated core 10 is formed with a slot, an inner diameter and an outer diameter in series.

  Next, as shown in FIG. 1 (e), the applied pressure of the third pressurizing unit 9 is removed, and 20 tons of applied pressure is applied to the first working chamber 73 of the second pressurizing unit 7 to form the outer diameter. Raise part 8. As a result, the outer diameter molded portion 8 is pulled out from the laminated core 10. Next, the piston bodies 72A and 72B are raised so that the pressurizing force of the second pressurizing unit 7 is switched from the first working chamber 73 to the second working chamber 74. As a result, the slot forming portion 6 is pulled out from the laminated core 10.

Next, as shown in FIG. 1 (f), a pressure of 20 tons is applied to the first pressurizing unit 3 to raise the work receiving unit 2, and the inner diameter molded unit 4 is pulled out from the laminated core 10.
Thus, in the laminated core molding apparatus of the present embodiment, the inner diameter, the slot, and the outer diameter of the laminated core 10 by a series of operations for switching the pressurizing force of the first, second, and third pressurizing units 3, 7, and 9. Can be molded in series at once.

  As described above, in the present invention, the inner diameter forming portion is fixed, the work receiving portion is supported by the first pressurizing portion, the presser portion and the slot forming portion are moved by the second pressurizing portion, and the outer diameter forming portion is By adopting a configuration in which the third pressure portion is moved, the inner and outer diameters and the shape of the slot can be formed with high accuracy in one step.

It is explanatory drawing of the lamination | stacking core shaping | molding apparatus of embodiment of this invention. It is explanatory drawing of the conventional laminated core shaping | molding apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Laminated core shaping | molding apparatus 2 Work receiving part 3 1st pressurization part 4 Inner diameter shaping | molding part 5 Presser part 6 Slot shaping | molding part 7 2nd pressurization part 8 Outer diameter shaping | molding part 9 3rd pressurization part 10 Laminated | stacking core

Claims (2)

At least a workpiece receiving portion (2) for supporting a laminated core (10) as a workpiece;
A first pressurizing part (3) for supporting the work receiving part;
A fixed inner diameter molding part (4) for molding the inner diameter of the laminated core (10);
A holding part (5) for pressing and moving the laminated core (10) against the work receiving part (2), and a slot forming part (6) for forming a slot,
The presser part (5), the second pressurizing part (7) for moving the slot forming part (6),
An outer diameter molding part (8) for holding the presser part (5) and the second pressurizing part (7) and molding the outer diameter of the laminated core (10);
A third pressure part (9) for moving the outer diameter molding part (8);
A laminated core molding apparatus comprising:   The laminated core according to claim 1, wherein the first pressure part (3), the second pressure part (7), and the third pressure part (9) are pressure cylinders. Molding equipment.

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