Armature manufacture at Hutchinson & Dibley has been a mainstay of the business for many years

using  traditional techniques.

 

 

 

Stage 1.

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The Armature shaft, laminations, and commutator are gathered from stock.

 

 

Stage 2.

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Using a variety of presses, the parts are assembled into the form shown.

 

 

 

Stage 3.

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At this stage the windings are created around the lamination stack.

 

 

 

 

 

Stage 4.

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The separate coils are terminated on the commutator in strict rotation.

 

 

 

Stage 5.

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The Armature is then dressed with fibreglass insulation and tested for continuity and Insulation resistance.

 

 

 

 

 

Stage 6.

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Impregnation of the windings are carried out by initially placing the armature in a Vacuum

chamber and submitting it to 30 inches of Vacuum, at this point varnish is admitted, the

chamber is then pressurised 3 bar. This ensures that there are no air locks in the windings.

 

 

 

 

Stage 7.

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The completed Armature is diamond machined to close tolerances and subjected to a final test.