Title:
【発明の名称】放射状に形成された部材が軸方向に折曲されているポ-ルピ-スの製造方法
Document Type and Number:
Japanese Patent JPS5934058
Kind Code:
B2
Abstract:
A process for preparing a pole piece having spiders bent in the axial direction for the rotor of a generator in which a slug is obtained from a round metal bar, said slug is upset to a disc-shaped member, said member is formed with a plurality of radially and outwardly extending spiders on the outer periphery of and a boss on one surface of said member, said spiders are tapered on one surface and an annular bending recess is formed in said one surface of the spiders, said spiders are bent at said annular bending recess until the outer surface of the spiders lie on a plane right angles to the plane of said member to provide a semiprocessed product, and said semiprocessed product is in succession subjected to coining and sizing steps to thereby provide a complete pole piece having spiders bent in the axial direction.
Inventors:
OOTANI SHOICHI
Application Number:
JP10780875A
Publication Date:
August 20, 1984
Filing Date:
September 04, 1975
Export Citation:
Assignee:
AIDA ENG LTD
International Classes:
H02K1/22; B21K1/74; H02K1/24; H02K15/00; H02K15/02; H02K19/22; (IPC1-7): H02K15/02; H02K1/22; H02K19/22
Attorney, Agent or Firm:
Kiyoshi Nakayama