Title:
【発明の名称】電磁継手用の多極継手円板形成方法
Document Type and Number:
Japanese Patent JP3316595
Kind Code:
B2
Abstract:
A coupling disc (20) (i.e. the armature or rotor) of an electromagnetic coupling is made by using a punch and die to emboss a plurality of radially spaced rows of angularly spaced grooves (32) in the non-working face (24) of the disc (20) and to cause a plurality of radially spaced rows of angularly spaced projections (41) to be displaced from the working face (25) of the disc (20). The working face (25) then is machined to remove the projections (41) and, as an incident thereto, circumferentially continuous grooves (45) are formed in the working face (25) in radial alignment with the grooves (32) in the non-working face (24) in order to leave thin webs (46) which establish magnetic flux barriers. To establish even better flux barriers, angularly spaced slots (50) of the narrow radial width may be formed through the disc (20) by piercing the disc (20) from the working face (25) thereof and breaking through the thin webs (46) located between the sets of grooves (32,45).
Inventors:
Jozif, Eich, Brown
Lowell, S, Barras
Lowell, S, Barras
Application Number:
JP19137192A
Publication Date:
August 19, 2002
Filing Date:
June 26, 1992
Export Citation:
Assignee:
Dana, Corporation
International Classes:
B21D28/22; B21D17/02; B21D28/24; B21D28/32; B21D53/26; B21D53/34; B65D73/02; F16D27/112; F16D27/14; F16D55/48; (IPC1-7): B21D28/24; B21D53/26; F16D27/112; F16D55/48
Domestic Patent References:
| JP2168031A |
Other References:
【文献】米国特許5096036(US,A)
Attorney, Agent or Firm:
Yuzo Sanada (1 person outside)