Method and apparatus for aligning laminations in a stator core

Details Method and apparatus for aligning laminations in a stator core Method and apparatus for aligning laminations in a stator core

1982-07-26

1984-08-14

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29596, 29705, 29732, 29738, 33174Q, H02K 1502

Patent

active

044648260

ABSTRACT:
A method and apparatus for very accurately aligning a stack of loose laminations in the manufacture of a stator core for an electric motor or other dynamoelectric machine. The stack of loose laminations is supported on a pallet having a very accurately machined upper surface which is perpendicular to the desired centerline of the rotor accommodating bore. The pallet and lamination stack are moved into the alignment station and the pallet is accurately centered and the reference surface oriented perpendicular to the centerline by means of a tapered pin which acts against a tapered surface on the underneath side of the pallet. An arbor is inserted through the rotor accommodating bore of the stack, and engages a spherical head of the pin lying within the reference plane defined by the reference surface of the pallet, and the opposite end of the arbor is located by means of a second pin so that it is perpendicular to the reference plane. The mounting bolts are then threaded into the pallet, the upper pin releases the top of the arbor so that it is free to rotate about the spherical head of the lower pin, and any misalignment of the bore is measured by sensing the displacement of the upper portion of the arbor.

REFERENCES:
patent: 3490143 (1970-01-01), Hull
patent: 4222173 (1980-09-01), Hall

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