公开(公告)号：EP0579625B1

公开(公告)日：1995-05-24

申请号：EP92906930.0

申请日：1992-03-20

申请人： ASEA BROWN BOVERI AB

发明人： GERTMAR, Lars ,  RYDHOLM, Bengt ,  SADARANGANI, Chandur ,  ZINCK, Jens, Peter

IPC分类号： H02K17/16 ,  H02K1/26

CPC分类号： H02K17/165 ,  H02K1/32 ,  H02K17/185

摘要： In the manufacture of rotors, for each rotor slot two openings (5, 7) are punched into the circular rotor plates that form the rotor pack. The contour on the first opening (5) includes a concavity (6) which is directed towards the periphery of the plate, or disc, whereas the second opening (7) forms a radial gap which begins at the concavity (6) of the second recess and leaves a narrow bridge (8) and extends outwards towards the periphery of the rotor. According to the invention, the second opening has a widened part (9) between the concavity (6) and the periphery of the rotor.