Chaining fanning strip for large-medium type motor and manufacturing method thereof

A sector-shaped, large and medium-sized technology, which is applied in the field of link sectors for large and medium-sized motors and its manufacturing, can solve the problems of increased cost, cumbersome manufacturing process, low degree of freedom, etc., and achieves reduced die cost, simple operation, and reduced positioning requirements. Effect
CN101282048BInactive Publication Date: 2011-04-20SHANGHAI NANYANG ELECTRICAL MACHINERY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI NANYANG ELECTRICAL MACHINERY
Publication Date
2011-04-20
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a chaining segmental strip for large and middle scale electric machine and manufacturing method thereof, the chaining segmental strip comprises a segmental punching strip of complete round-shaped punching strip enclosed by a plurality of strips, a seam is dovetail-shaped arranged between each two neighboring segmental strips. The method comprises calculating number of slot of each segmental strip, blanking, splicing, and punching. The invention can effectively control radial and tangential displacements between the segmental strips, and the shape and the number of the slot are not constrained, the manufacturing method is simple, thereby reducing the labor intensity.
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Description

technical field

[0001] The invention relates to a link segment, in particular to a link segment for large and medium-sized motors and a manufacturing method thereof. technical background

[0002] Usually, punching with a diameter of less than 1000mm is punched in a full circle. However, when the outer diameter of the punching of a large and medium-sized motor is greater than 1000mm, which exceeds the manufacturing width of the existing silicon steel plate, it cannot be directly punched in a full circle. For punching sheets with large diameters that cannot be used as a full circle, fan-shaped punching is generally used, and fan-shaped sheets are stacked.

[0003] see figure 1 , is a kind of fan-shaped piece in the prior art, including several pieces of fan-shaped piece, on which there are tightening screw holes 2', each piece of fan-shaped piece 4' needs to be punched with a double die, and its groove shape and number of grooves are fixed . The seam of sheet and sheet just...

Claims

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