Sinterbonded electric machine components
AssigneeDelphi Technologies, Inc.
InventorsFrederick B. Reiter JR., Tom L. Stuart
Life of this patent
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Abstract
A method of making composite electric machine components. Magnetic segments and non-magnetic segments are separately formed to green strength, and then arranged adjacent to each other in a desired magnetic pattern. A small amount of powder material is added in-between the segments, and the whole assembly is then sintered to form a sinterbonded composite component of high structural integrity.
Claims27
A method of making a composite electric machine component of a desired magnetic pattern, the method comprising:
- placing at least one green-strength magnetically conducting segment and at least one green-strength magnetically non-conducting segment adjacent in the desired magnetic pattern;
- adding powder metal between the segments;
- and
- sintering the segments and added powder metal whereby the segments are bonded together by the added powder metal to form the composite electric machine component.
A method of making a composite electric machine rotor assembly of a desired magnetic pattern, the method comprising:
- forming at least one green-strength magnetically conducting segment by pressing a soft ferromagnetic powder metal in a die;
- forming at least one green-strength magnetically non-conducting segment by pressing a non-ferromagnetic powder metal in a die;
- placing the green-strength magnetically conducting segments adjacent the magnetically non-conducting segments to form a disk in the desired magnetic pattern;
- adding powder metal between the segments;
- and
- sintering the segments and added powder metal whereby the segments are bonded together by the added powder metal to form a sinterbonded composite disk;
- stacking a plurality of the sinterbonded composite disks axially on a shaft with the magnetic patterns aligned to form the composite electric machine rotor assembly.
Dependencies are inferred from the claim text.