Method and device for manufacturing stator with skewed slots

Abstract

The invention provides a method and device for manufacturing a stator with skewed slots, which can reduce damage to the stator and a protruding amount of a coil end when the stator is turning around. In the method, a coil (20) is inserted into a slot (14) parallel with a stator core (11) in a roll hang mode; the stator core is then turned around to gradually stagger magnetic metal sheets (16) in a circumferential direction, wherein the stator core is formed by stacking a plurality of magnetic metal sheets. An extending part (22a) straight extending along an extension line of the slot (14) is formed on a coil end part (22) protruding from an end surface of the stator core inserted with the coil (20). The coil end part (22) protruding from the end surface of the stator core inserted with the coil and the coil end part (22) protruding from the other end surface respectively form an extension part; an extension part (22a) of another coil end part (22) is formed along an extension line of another slot (14) except the continuous slot (14) of the extension part (22a) of the coil end part (22).

Description

technical field [0001] The present invention relates to a method of manufacturing a stator with skewed slots, in which coils are mounted on a stator core formed by laminating magnetic metal sheets and twisted so that the metal sheets are gradually displaced. Background technique [0002] Conventionally, a stator of a rotating electric machine has a cylindrical stator core having a plurality of teeth (magnetic poles) arranged radially and protruding toward the inner diameter direction, and a plurality of slots opening between the teeth; a stator coil , the stator coil is assembled to the stator core by accommodating coil sides in the slots. The stator core is formed by laminating a plurality of magnetic metal sheets. A so-called insertion method is known for the assembly of the stator coil, that is, the ring-shaped stator coil and the stator core are manufactured separately in advance, and then the stator coil is assembled using an insertion device. The coils are accommodate...

AI Technical Summary

Problems solved by technology

However, since the skewed helical twist guide portion 8a is actually formed directly on the outer periphery of the central column 8, if the deflected stator core 1 or the skewed central column 8 is not aligned with its degree of twist Rotate, then there is the defect that the central column 8 cannot be pulled out straightly from the stator core 1

Therefore, there still remains a problem that should be solved, that is, a new structure that rotates the stator core 1 or the skewed center column 8 corresponding to the degree of its twist is required, and the structure is very complicated.

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