Patent ID: 8424186

Claim:
A method for manufacturing an electric machine, the method comprising: making a housing for the electric machine by performing the following: making a housing foam part from at least three individual foam parts, the individual foam parts including: (i) a center disk, which has an essentially hollow-cylindrical design and forms an intermediate piece of the housing foam part, (ii) an annular disk, which has an essentially hollow-cylindrical design and forms another intermediate piece of the housing foam part, and (iii) a bearing support disk, which has an essentially cup-shaped design and forms an end of the housing foam part; and making a housing cast blank using the housing foam part by a lost foam casting process, the housing cast blank forming the housing; wherein the electric machine includes the housing, a stator accommodated in the housing, which is formed at least from a stator body and stator windings, a rotor, which is supported in the housing so as to be able to rotate about a rotor axis, and a bearing support fastened on the housing.