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Method for inserting of preformed hairpin conductors into a rotor or stator

  • US 20090265914A1
  • Filed: 03/22/2007
  • Published: 10/29/2009
  • Est. Priority Date: 03/22/2007
  • Status: Active Grant
First Claim
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1. A method of insertion of preformed hairpin conductors formed of a rectangular cross section wire and having first and second legs joined at one end by an integral conductor loop into a motor conductor forming fixture for forming conductors for a motor rotor or stator comprising:

  • a) providing a forming fixture having a plurality of pockets distributed in equal number in an even number of adjacent circles concentric with a center of the forming fixture;

    b) receiving hairpin conductors positioned side by side from a feeder and feeding the hairpins, one by one, into a hairpin insertion assembly oriented relative to the forming fixture so that the legs are side by side along a line passing through the center of the forming fixture and disposed adjacent a pair of pockets in first and second adjacent circles;

    c) with the forming fixture angularly indexed relative to the hairpin insertion assembly, pushing a hairpin conductor toward the forming fixture so that the legs thereof extend into a respective pair of pockets; and

    ,d) indexing the forming fixture about the center to align an additional pair of pockets with the hairpin insertion assembly; and

    ,e) repeating c) and d) a plurality of times.

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