Patent ID: 8647091
Filing Date: 2014-02-11
Classification: B22F,B30B,H02K

Abstract:
1. A compaction tool for compacting an element from metal powder where said element has uniform axially displaced protrusions, said tool comprises a die and a top and a bottom punch with punch surfaces, wherein the top and bottom punch comprises displaceable opposing punch surfaces for displacing the metal powder there between before compacting the element, wherein the tool is adapted for compacting a stator to be used in a rotating electrical machine, wherein each of the top and the bottom punch of said tool comprises respective first and second punch parts each comprising a respective set of punch surfaces, where the first and second punch parts and thereby their respective sets of punch surfaces can be axially displaced relative to each other, wherein the first top punch part and the first bottom punch part form a first set, and the second top punch part and the second bottom punch part form a second set, wherein the punches of the first set are axially displaceable relative to the punches of the second set.