A method for producing a rotationally symmetrical, metallic composite body and with this method an external rotor motor for a wheel-type motor

摘要

The invention relates to a method for producing a rotationally symmetrical, metallic composite body of a metallic outer ring with axially parallel grooves in its inner surface and an electrically and / or thermally conductive inner layer of a nonferrous - (ne) metal, which fills the grooves in the outer ring and at least at one end, a closed annular surface forms, characterized in that a one-piece tubular ne - metal - body with closed annular surfaces at both its ends and with the webs between the grooves of the outer ring corresponding slot-shaped openings in the inner surface of the outer ring, which is pressed into the. Dollars a with this method can be an external rotor for a wheel-type motor with an outer ring of steel, in particular of heat-treatable steel, with axially parallel grooves in its inner surface and with an inner layer of copper, which fills the grooves in the outer ring and at both ends in each case a closed annular surface; in this case, the inner layer of copper by a one-piece copper - cage bushing is formed, at their two ends, the closed annular surfaces and between the two annular surfaces axially parallel, the grooves of the outer ring corresponding slot-shaped has perforations, and in the inner surface of the outer ring is pressed up to the shrink fit.