Method for building a magnetic core consisting of laminations bound into packs, for an electrical machine

摘要

A method for building a magnetic core (8) consisting of laminations (9) bound into packs, for an electrical machine (1); the building method provides steps of: stacking a group of laminations (9) one on top of the other to form the magnetic core (8); binding the group of laminations (9) forming the magnetic core (8) into packs by means of the locking members (10) which axially compress the group of laminations (9) with a predetermined clamping force; and pre-compressing the groups of laminations (9), before binding into packs by means of the locking means (10), by means of a pre-compression press (11) which is independent and separate from the locking members (10), by applying a compression force to the group of laminations (9) which is greater than the clamping force.