Method for inserting of preformed hairpin conductors into a rotor or stator
First Claim
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.
1 Assignment
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Accused Products
Abstract
Method and apparatus for insertion of preformed rotor and stator conductors into a twisting machine for forming hairpin shaped conductors of rectangular wire into stator conductors. The method comprises 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, receiving hairpin conductors positioned side by side from a feeder and feeding the hairpins, one by one, into a hairpin insertion assembly oriented above the forming fixture so that the legs are side by side along a line passing through the center and disposed adjacent a pair of pockets in first and second adjacent circles, and with the forming fixture angularly indexed relative to the hairpin insertion assembly, pushing a hairpin conductor down so that the legs thereof extend into a respective pair of pockets, and indexing the forming fixture about the center to align an additional pair of pockets with a hairpin in the hairpin insertion assembly and repeating until the forming fixture is substantially populated with hairpin conductors.
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Citations
20 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10)
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7. The method of 6 wherein the pockets in the third and fourth adjacent circles in the forming fixture are at a different elevation than the pockets in the first and second adjacent circles, and wherein the hairpin conductors inserted into pockets in third and fourth adjacent circles are also inserted to be positioned at a different elevation than the hairpin conductors inserted into pockets in the first and second adjacent circles.
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11. 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:
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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 above 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 down 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 a hairpin in the hairpin insertion assembly; and
,e) repeating c) and d) a plurality of times. - View Dependent Claims (12, 13, 14, 15, 16, 18, 19, 20)
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17. The method of 16 wherein the pockets in the third and fourth adjacent circles in the forming fixture are at a different elevation than-the pockets in the first and second adjacent circles, and wherein the hairpin conductors inserted into pockets in third and fourth adjacent circles are also inserted to be positioned at a different elevation than the hairpin conductors inserted into pockets in the first and second adjacent circles.
Specification