| 摘要 |
A method of manufacturing an iron core of a multi-phase linear motor having a stator and a mover which are disposed facing each other with an air gap therebetween, the stator or mover including a plurality of salient poles disposed along the air gap extending in a direction perpendicular to a moving direction of the mover, a multiplicity of teeth formed on surfaces of the salient poles opposite to the air gap at an equal pitch along the moving direction of the mover, and a stator iron core or mover iron core in which the stator teeth formed in the salient poles or the mover teeth are disposed with a predetermined shift to each other in the moving direction of the mover. The method is characterized in that the stator iron core or mover iron core is formed by punching iron plates constituting the iron core by means of a punching mold, while selectively controlling to push out and withdraw movable punches included in said punching mold and disposed to be able to be pushed out and withdrawn for each of said salient poles by means of a punch controller. Thus, the tips of the salient poles form tooth tops or tooth bottoms of the teeth at a predetermined period for each punching of the iron plates. The punched iron plates are laminated successively. |
