Armature tester
AssigneeR. E. Phelon Company, Inc.
InventorRobert H. Brady
Life of this patent
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Abstract
A method and apparatus are provided for determining angular alignment between a lamination stack, a commutator, and coil windings of an armature for an electric motor. The apparatus has a body with an aperture for extending about the commutator, and a post for fitting into the lamination stack to locate an indicator slot and graphic symbols relative to the lamination stack for visually comparing alignment between the lamination stack, the commutator, and the coil windings.
Claims22
An apparatus for determining angular alignment between two components located on a shaft of an armature, the components of the armature including a commutator having commutator slots, a lamination stack having lamination slots, and a plurality of coil windings which are disposed about the lamination stack, the apparatus comprising:
- a positioning member body having an aperture for closely receiving a portion of the armature;
- means including an extending member mounted to the positioning member body which inserts into one of the slots of a first one of the components when the portion of the armature is closely received within the body for angularly locating the apparatus relative to the first one of the components;
- and
- an indicator gap on the positioning member body angularly spaced from the extending member for exposing a selected one of the slots on a second one of the components for visually determining the angular alignment between the first and second ones of the components.
An apparatus for determining angular alignment between a commutator having a plurality of commutator slots and a lamination stack of an armature for an electric motor, the lamination stack having a plurality of lamination slots containing coil windings, the apparatus comprising:
- a body having an aperture extending therein for closely receiving the commutator;
- an extending member which extends from the body for fitting into one of the lamination slots within the lamination stack for locating the apparatus relative to the lamination stack when the body is fitted about the commutator;
- and
- the body including an indicator gap formed therein to extend parallel to one of the commutator slots for providing a visual indication for comparing to the one of the commutator slots to determine the angular alignment between the commutator and the lamination stack when the body is fitted about the commutator and the apparatus is located relative to the lamination stack.
An apparatus for use with an armature having a commutator, a lamination stack and coil windings to determine angular alignment between the commutator and the coil windings, wherein the coil windings are wrapped around the lamination stack, placed in lamination slots which are spaced apart around the lamination stack, and the commutator has a plurality of tangs, one for each lamination slot, said apparatus comprising:
- a body having an aperture extending therein for closely receiving a portion of the armature;
- means for angularly locating the apparatus relative to the commutator to angularly align the apparatus about a longitudinal axis of the armature;
- and
- a first graphic symbol defining a location on the body for visually comparing to a particular one of the coil windings to determine the angular alignment, about the longitudinal axis, between the coil windings which are disposed on the lamination stack and the commutator.
An apparatus for determining angular alignment between a commutator and a lamination stack about a central axis of an armature for an electric motor, and for determining a positioning of coil windings about the lamination stack, wherein the coil windings are wrapped around the lamination stack, placed in lamination slots which are spaced apart around the lamination stack, and the commutator has a plurality of tangs around which a portion of the coil windings are wrapped and then extended to the lamination slots, at least one of the tangs providing a start-stop commutator tang for the coil windings, said apparatus comprising:
- a body having an aperture with a longitudinal axis extending therethrough for closely receiving the commutator, and an indicator mark for aligning the body with the start-stop commutator tang;
- an extending member which, when the apparatus is positioned about the commutator, extends from the body in a direction which is parallel to the central axis of the armature for inserting into one of the slots within the lamination stack to angularly locate the apparatus relative to the lamination stack;
- the body having an indicator gap formed therein parallel to the central axis of the armature for providing a visual indication of one of the commutator slots to determine the angular alignment between the commutator and the lamination stack when the apparatus is angularly located relative to the lamination stack;
- and
- a first graphic symbol defining a location on the body for visually comparing the positioning of the coil windings about the lamination stack and the start-stop commutator tang, when the body is aligned with the start-stop commutator tang.
A method for determining angular alignment between at least two components of an armature for an electric motor, the components of the armature including coil windings, a commutator having a plurality of tangs and commutator slots spaced apart around a longitudinal axis of the armature, and a lamination stack having a plurality of lamination slots spaced apart around the longitudinal axis for receiving the coil windings, the method comprising the steps of:
- providing a member which has a body with an aperture, an indicator gap and an extending member which extends from the body;
- positioning the member over a portion of the armature by inserting said portion through the aperture, and inserting the extending member into one of the slots of one of the components;
- and
- using the indicator gap, visually comparing an alignment of one of slots of the other of the components to the indicator gap.
Dependencies are inferred from the claim text.