Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Plural or complex apparatus
Patent
1977-09-23
1978-10-03
Keenan, Michael J.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Plural or complex apparatus
29596, 29736, B21D 1110
Patent
active
041177070
ABSTRACT:
An apparatus for shaping end turn portions of dynamoelectric machine coil bars. An end portion of an electrical coil bar is bent at a selected angle to a straight portion of the electrical coil bar. The bent, end portion of the coil bar is caused to lie along a frustoconical surface having an axis of rotation extending substantially parallel to the straight portion of the coil bar. A rotatable member whose axis of rotation is mounted perpendicularly to the frustoconical surface at a selected distance from the straight coil bar portion has an opening therethrough for guiding the coil bar's end portion in a spiral configuration on the frustoconical surface when that surface is rotated about its axis through a predetermined angular displacement. A part of the end portion of the coil bar is securely held in place by a clamp while the rotatably mounted member is rotated so as to cooperate with a lead bend anvil and bend the end portion between the anvil and the rotatable member to provide a straight, terminating portion on the coil bar. Such coil bar formation can be provided for each end of an unshaped stator coil bar by utilizing such forming apparatus at each end of the coil bar.
REFERENCES:
patent: 1001244 (1911-08-01), Brown, Jr.
patent: 1703188 (1929-02-01), Elsey
patent: 1721810 (1929-07-01), Carter
Kolesar Mark
Rettger Harry C.
Keen J. W.
Keenan Michael J.
Westinghouse Electric Corp.
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