Core manufacturing method, device, and laminated iron core
AssigneeNHK Spring Co., Ltd.
InventorsKosuke TAMARU, Takeshi HAGIWARA
Life of this patent
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Abstract
A method punches and holds an iron core piece from a magnetic steel plate into a die using a punch, rotates the die at a predetermined angle, repeats the holding for an iron core piece based on the punching and the rotating of the die to form laminated iron cores in which iron core pieces are laminated, and separates the laminated iron core with a predetermined height being lower and coming off the die to be supported on a receiving stage from the laminated iron core being upper according to descending of the receiving stage, wherein the rotating of the die is stopped at the time of the descending of the receiving stage in a state that the laminated iron core being lower is come off the die.
Claims9
A manufacturing method of a core comprising:
- punching and holding an iron core piece from a magnetic steel plate into a die using a punch;
- rotating the die at a predetermined angle;
- repeating the punching and holding step and the rotating step to form laminated iron cores in which iron core pieces are laminated;
- and
- separating the laminated iron core with a predetermined height being lower and coming off the die to be supported on a receiving stage from the laminated iron core being upper according to descending of the receiving stage, wherein
- the rotating of the die is stopped at the time of the descending of the receiving stage in a state that the laminated iron core being lower is come off the die.
A manufacturing device of a core comprising:
- a punch for punching and a rotatable die;
- a receiving stage being liftable;
- and
- a controller to control the punch, the die and the receiving stage, wherein
- the controller conducts
- holding an iron core piece punched from a magnetic steel plate using the punch into the die;
- rotating the die at a predetermined angle;
- repeating the holding of an iron core piece based on the punching and the rotating of the die to form laminated iron cores in which iron core pieces are laminated;
- and
- separating the laminated iron core with a predetermined height being lower and coming off the die to be supported on a receiving stage from the laminated iron core being upper according to descending of the receiving stage, wherein
- the rotating of the die is stopped at the time of the descending of the receiving stage in a state that the laminated iron core being lower is come off the die.
Dependencies are inferred from the claim text.