Method for manufacturing an electric machine by a lost foam casting process, and electric machine for a hybrid vehicle
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jul 22, 2010
app pub date -
Jun 10, 2009
filing date -
Jul 30, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for manufacturing an electric machine, made up of a housing, a stator accommodated in the housing, which is formed from a stator body and stator windings, a rotor, which is supported in the housing so as to be rotatable about a rotor axis, and a bearing support fastened on the housing, includes a housing foam part manufactured from at least three individual foam parts and a housing cast blank manufactured using the housing foam part in accordance with a lost foam casting method. Individual foam parts are made up of a center disk having an essentially hollow-cylindrical design and forming an intermediate piece of a housing foam part, an annular disk having an essentially hollow-cylindrical design and forming another intermediate piece of the housing foam part, and a bearing support disk having an essentially cup-shaped design and forming an end of the housing foam part.
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