AUTOMATIC ARMATURE WINDING MACHINE

• US 3,628,229 A
• Filed: 04/01/1969
• Issued: 12/21/1971
• Est. Priority Date: 04/01/1969
• Status: Expired due to Term

• Current Assignee: Clarence W. Donnaker, John M. Biddison
• Original Assignee: Clarence W. Donnaker, John M. Biddison
• Inventors: Biddison, John M., Donnaker, Clarence W.
• Application Number:
  US04/812,258
• Time in Patent Office: 994 Days
• US Class Current: 29/564.5
• CPC Class Codes: H02K 13/04 Connections between commutator segments and windings
• CPC Class Codes: H02K 15/09 by laying conductors into slotted rotors
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine
• CPC Class Codes: Y10T 29/49011 Commutator or slip ring assembly
• CPC Class Codes: Y10T 29/5141 and means to stake electric wire to commutator or armature in assembling of electric motor or generator
• CPC Class Codes: Y10T 29/53157 Means to stake wire to commutator or armature

Abstract

In the automatic winding of armatures, the last lead wire from a coil wound in an armature is looped about an appropriate commutator tang and the wire portion connected between the newly wound armature and an unwound armature is cut closely adjacent the aforementioned commutator tang. Also disclosed is a doubleflier apparatus for winding armatures, wirecutting assemblies, and a transfer mechanism adapted to hold the connecting wire portions in a position where they may be cut closely adjacent the tangs about which the wires are looped. In one embodiment the commutator tangs are collapsed at the time the connecting wire portions are cut.

Claims

1. In an armature winding machine of the type having a pair of rotating fliers and a pair of winding forms for directing wires into pairs of slots in an armature core mounted on an armature shaft and supported between said pair of fliers, of the type wherein leads are automatically made to commutator tangs of a commutator mounted on said shaft adjacent said core during the winding of an armature, and of the type wherein a wound armature is removed from its position between the fliers with two lengths of wire leading from a pair of commutator tangs of the wound armature to the fliers, an unwound armature being then supported between the fliers for the winding of coils in said unwound armature, apparatus for cutting the lengths of connecting wires between said wound armature and said unwound armature including means engaging the connecting wires between said wound armature and said unwound armature for holding the sections of said connecting wires adjacent the commutator of said wound armature in planes nearly perpendicularly intersecting said shaft, and wire cutting means for cutting said ends of said connecting wires immediately adjacent said commutator.

2. The machine of claim 1 wherein the last pair of commutator lead connections is made by looping said wires about a pair of commutator tangs, and further including means for bending said pair of commutator tangs to clamp the wires thereto.

3. The machinE of claim 1 wherein said wirecutting means includes a pair of wire cutting assemblies, one for each of said connecting wires, each of said wirecutting assemblies including cutter blades movable toward and away from said ends of said connecting wires, and means for advancing said cutter blades into wirecutting positions.

4. The machine of claim 3 wherein the last pair of commutator lead connections is made by looping said wires about a pair of commutator tangs, and further including means for bending said pair of commutator tangs to clamp the wires thereto.

5. The machine of claim 4 wherein said means for bending said pair of commutator tangs is carried by one of said cutter blades of each of said wirecutting assemblies.

6. In an armature winding machine of the type having a pair of rotating fliers and a pair of winding forms for directing wires into pairs of slots in an armature core supported between said pair of fliers, of the type wherein commutator lead connections are automatically formed in the winding of an armature, and of the type including transfer means for removing a wound armature from its position between the fliers with two lengths of wire leading from a pair of commutator tangs of the wound armature to the fliers, an unwound armature being then supported between the pair of fliers for the winding of coils in said unwound armature, the improvement wherein said transfer means comprises clamp means for gripping a wound armature and wire-engaging means carried by said clamp means for engaging said two lengths of wire leading from said pair of commutator tangs of the wound armature to the fliers and holding said two lengths of wire so that portions thereof extend outwardly from the shaft of said wound armature, and wirecutting means for cutting said portions of wire immediately adjacent the commutator tangs of said wound armature.

7. The machine of claim 6 wherein the last pair of commutator lead connections is made by looping said wires about a pair of commutator tangs, and further including means for bending said pair of commutator tangs to clamp the wires thereto.

8. The machine of claim 6 wherein said wirecutting means includes a pair of wirecutting assemblies, one for each of said connecting wires, each of said wirecutting assemblies including cutter blades movable toward and away from said portions of wire, and means for advancing said cutter blades into a wirecutting position.

9. The machine of claim 8 wherein one of said cutter blades of each of said wirecutting assemblies has means thereon for engaging and bending the commutator tangs of said wound armature to which said connecting wires are connected.

10. A machine for automatically winding armatures of the type wherein at least one rotating flier is rotated to wind coils of wire guided by a wire guide into slots of an armature core mounted on an armature shaft and supported adjacent said flier and of the type wherein lead connections are made to commutator tangs of a commutator mounted on said shaft adjacent said core by relative movements of the flier and the armature being wound, the improvement wherein said machine is provided with automatically operated wire cutter means adapted to cut the section of wire leading from the last commutator tang to which the wire is connected at the end of the winding of an armature, said wire cutter means being operable to cut said section of wire immediately adjacent said last-mentioned tang and sufficiently close to said last-mentioned tang that no further trimming of wire therefrom is required, wire-engaging means operatively associated with said wire cutter means for retaining said section of wire in a plane nearly perpendicularly intersecting said armature shaft at the end of the winding of an armature and prior to the operation of said cutter means, said wire engaging means engaging said wire at a point remote from said armature shaft and retaining said wire in said plane and in the path of operation of said wire cutter means, and auTomatically operated means for moving said wire-engaging means into engagement with said wire.

11. The machine of claim 10 wherein said improvement further includes transfer means including a clamp for gripping the wound armature and operative to remove the wound armature from its position adjacent said flier after the winding of the wound armature is completed, and wherein said wire-engaging means is mounted upon said transfer means for movement therewith.