Methods and apparatus for marking and identifying hooks of electric motors
First Claim
1. In a method of making electric motor armatures having at least a first plurality of coils of wire wound on a substantially cylindrical armature core so that lead wires of each coil pass through predetermined ones of a plurality of structures on said armature, said structures being circumferentially spaced from one another around said core and initially substantially identical to one another except that a first one of said structures has more wires passing through it than at least one second one of said structures has, said structures being fused to the wires passing through them after all of said coils have been wound on said armature in order to ensure electrical contact to the coils, the improvement comprising the steps of:
- deforming a selected one of said first and second structures in a predetermined way to distinguish the deformed structure from those of said structures which have not been similarly deformed, said deforming being performed after the deformed structure has received its lead wire or wires but before any of said structures have been fused;
after all of said coils have been wound and said deforming has been performed and when said structures are to be fused, detecting whether a structure has been deformed in said predetermined way; and
fusing the structure which has been subjected to said detecting step to the wire or wires passing through it using a fusing operation which varies depending on whether or not said structure has been detected to have been deformed in said predetermined way.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus for marking and identifying a commutator hook of an electric motor are provided. A preselected commutator hook is marked by deforming the hook while the armature is in a winding machine, with a known angular position. The marked hook is identified by apparatus which determines whether or not the hook has been deformed while in the winding machine, and thereby recognizing the hook.
-
Citations
10 Claims
-
1. In a method of making electric motor armatures having at least a first plurality of coils of wire wound on a substantially cylindrical armature core so that lead wires of each coil pass through predetermined ones of a plurality of structures on said armature, said structures being circumferentially spaced from one another around said core and initially substantially identical to one another except that a first one of said structures has more wires passing through it than at least one second one of said structures has, said structures being fused to the wires passing through them after all of said coils have been wound on said armature in order to ensure electrical contact to the coils, the improvement comprising the steps of:
-
deforming a selected one of said first and second structures in a predetermined way to distinguish the deformed structure from those of said structures which have not been similarly deformed, said deforming being performed after the deformed structure has received its lead wire or wires but before any of said structures have been fused; after all of said coils have been wound and said deforming has been performed and when said structures are to be fused, detecting whether a structure has been deformed in said predetermined way; and fusing the structure which has been subjected to said detecting step to the wire or wires passing through it using a fusing operation which varies depending on whether or not said structure has been detected to have been deformed in said predetermined way. - View Dependent Claims (2, 3, 4, 5)
-
-
6. In apparatus for making electric motor armatures by winding at least a first plurality of coils of wire on a substantially cylindrical armature core so that the lead wires on each coil pass through predetermined ones of a plurality of structures on said armature, said structures being circumferentially spaced from one another around said core and initially substantially identical to one another except that a first one of said structures has more wires passing through it than at least one second one of said structures has, said structures being fused to the wires passing through them after all of said coils have been wound on said armature in order to ensure electrical contact to said coils, the improvement comprising:
-
means for deforming a selected one of said first and second structures in a predetermined way to distinguish the deformed structure from those of said structures which have not been similarly deformed, said means for deforming operating on the deformed structure after the deformed structure has received its lead wire or wires but before any of said structures have been fused; means for detecting whether a structure has been deformed in said predetermined way, said means for detecting being employed after all of said coils have been wound and said means for deforming has operated and when said structures are to be fused; and means for fusing the structure which has been operated on by said means for detecting to the wire or wires passing through that structure using a fusing operation which varies depending on whether or not said means for detecting has determined that said structure has been deformed in said predetermined way. - View Dependent Claims (7, 8, 9, 10)
-
Specification