Laminated rotary actuator with three-dimensional flux path
AssigneeWoodward, Inc.
InventorKevin Allen Bischel
Life of this patent
Estimating the term…
Abstract
A rotary actuator includes a stator assembly positioned within an outer enclosure. A rotor assembly is positioned adjacent to the stator and is configured to rotate relative thereto and about a centerline axis of the rotary actuator. Each of the outer enclosure, the stator assembly, and the rotor assembly are arranged to carry a magnetic flux therethrough and form a flux path loop, such that as a magnetic flux flows through the outer enclosure, the stator assembly, and the rotor assembly, a torque is generated by rotation of the rotor assembly relative to the stator assembly.
Claims18
A method for manufacturing a rotary actuator comprising:
- providing an outer enclosure;
- positioning a stator assembly within the outer enclosure, the stator assembly comprising a plurality of stator laminations each having a lamination face oriented orthogonally to a centerline axis of the rotary actuator, with each of the stator laminations comprising two oppositely positioned pole faces;
- and
- positioning a rotor assembly adjacent to the stator assembly such that the two poles faces are separated from the rotor assembly by a working air gap to allow for the rotor assembly to rotate about the centerline axis of the rotary actuator, the rotor assembly including a rotor core and a plurality of rotor laminations press-fit onto the rotor core;
- wherein each of the outer enclosure, the stator assembly, and the rotor assembly are arranged to carry a magnetic flux therethrough, with each of the plurality of stator laminations being configured to carry the magnetic flux therethrough in a direction parallel to the lamination face of the stator lamination.
A method for manufacturing a rotary actuator comprising:
- constructing a tube shaped outer housing of a metallic material;
- forming a stator assembly and a rotor assembly configured to be positionable within the outer housing, wherein at least one of the stator assembly and the rotor assembly are formed at least in part from a plurality of metallic laminations;
- and
- positioning the stator assembly and the rotor assembly within the outer housing, the stator assembly being separated from the rotor assembly by a working air gap such that the rotor assembly can rotate relative to the stator assembly to generate an output torque.
Dependencies are inferred from the claim text.