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Manufacturing method of amorphous iron core

A technology of amorphous iron core and manufacturing method, which is applied in the direction of inductance/transformer/magnet manufacturing, transformer/inductor core, electrical components, etc., which can solve the problem of time-consuming forming operations, many fastening positions, and difficulty in ensuring iron core stacking Thickness value and other issues to achieve the effect of preventing the uneven thickness value of the iron core lamination, stabilizing the characteristics of the iron core, reducing the number of fixtures and man-hours

Inactive Publication Date: 2017-07-11
HITACHI IND EQUIP SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the number of parts such as side plates and bolts is large, and the molding work takes time.
In addition, due to the large number of fastening positions, it is difficult to ensure a certain thickness of the iron core lamination

Method used

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  • Manufacturing method of amorphous iron core
  • Manufacturing method of amorphous iron core
  • Manufacturing method of amorphous iron core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] use Figure 1 to Figure 6 A method of manufacturing the amorphous iron core according to Example 1 of the present invention will be described.

[0032] figure 1 It is a front view of the state after taking out the iron core from the cutting machine. The iron core 1 is constituted, for example, by stacking a plurality of amorphous alloy thin strips to form a unit laminate and arranging a plurality of the laminate around the inner core rod 3 . The iron core 1 is in an inverted U-shape with one side open. An inner mandrel 3 is installed on the inner peripheral side of the iron core, and the inner mandrel 3 and the back plate 2 are connected by bolts 4 . By implementing this connection without looseness, it is possible to prevent the iron core from opening, and to make the iron core lamination thickness value of the fastened portion an accurate value. also, figure 1 The arrows in indicate the direction of the bolt tightening force.

[0033] figure 2 It is a front ...

Embodiment 2

[0044] use Figure 7 Example 2 of the present invention will be described. In Example 2, the shape of the U-shaped side plate of Example 1 is modified. Figure 7 It is a front view of a state in which a U-shaped iron core molding side plate 9 is attached to the iron core 1, and a large arrow indicates a direction in which the side plate 9 is fitted, and a small arrow indicates a force application direction. The curved portion of the U-shaped side plate 9 has a shape along the R portion of the iron core.

[0045] According to this embodiment, by using the U-shaped side plate 9 , since the R portion of the iron core and the curved portion of the side plate are followed, deformation of the R portion of the iron core can be prevented. Thereby, the core characteristic can be stabilized. If the side plate is rectangular instead of U-shaped, there will be a gap between the R portion of the iron core and the clamp, and the iron core may hang down (expand) to this portion.

[0046]...

Embodiment 3

[0048] use Figure 8 , Figure 9 Embodiment 3 of the present invention will be described. In Example 3, the interval between the side plates in the U-shaped side plates of Example 1 is made variable. Figure 8 It is a front view of the state where the side plate variable jig is attached to the iron core, Figure 9 is a side view of the side and bottom plates of the side plate variable clamp. In addition, a large arrow indicates the direction in which the side plate variable jig 10 is embedded, and a small arrow indicates the direction of applying force.

[0049] The side plate variable jig 10 is formed of two pieces of side plates 10a and a bottom plate 10b. The protrusion 10aa of the side plate 10a of the variable side plate jig is inserted into the notch 10bb provided on the bottom 10b of the variable side plate jig, and the side plate 10a is connected to the jig connection position 10ba by the bottom plate connecting bolt 11 . By using a plurality of pre-prepared conne...

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Abstract

The present invention provides a manufacturing method of an amorphous iron core capable of ensuring accurate lamination values ​​of the iron core, having high operability, and reducing man-hours. The manufacturing method of the amorphous iron core formed by laminating amorphous magnetic alloy thin strips of the present invention includes: arranging a plurality of amorphous magnetic alloy thin strips with open ends on the outer peripheral side of the inner mandrel to form an inverted U-shaped iron core. The step of the core; disposing the inverted U-shaped iron core on the workbench, embedding the first frame on the iron core, covering the open end of the iron core with the first frame the steps of both sides and the bottom; the step of folding the open end of the iron core to gradually close the iron core; embedding the second frame on the first frame and covering the iron core with the second frame and the step of annealing the core.

Description

technical field [0001] The present invention relates to a method of manufacturing an amorphous iron core for use in transformers and the like. Background technique [0002] Amorphous alloys are used as low-loss core materials, and transformers using amorphous cores made of laminated amorphous alloy thin strips have been commercialized. [0003] The existing amorphous iron core forming operation is as follows Figure 10 As shown, the inner core rod 3 arranged on the inner peripheral side of the iron core 1 and the four side plates 2 and 8 arranged on the four surfaces of the outer peripheral portion of the iron core 1 are used in the order of (1) to (4). Bolt 4 is a method of bolt fastening. In addition, for example, a plurality of thin strips of an amorphous alloy are laminated to form a unit laminate, and the unit laminate is wound around a plurality of inner core rods 3 to form the amorphous core 1 . In this case, the number of parts such as side plates and bolts is larg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F27/25
Inventor 佐藤辰则远藤博之多田周二
Owner HITACHI IND EQUIP SYST CO LTD
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