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AssigneeCarbet Corporation
InventorBenson D. Martin
Estimating the term…
A method and apparatus for manufacturing laminated assemblies having ridges formed on projections which interlock with recesses of adjacent laminations. The improvement to the laminated assembly is a projection with a smaller cross-sectional area than the recess and with a plurality of exterior longitudinal ridges protruding from the projection surface for securing adjacent laminations together by compressive interference fit between the ridges and the recess in interlocking relationship throughout the laminated assembly. An improvement in the method for the manufacture of a pack of metal laminae by use of a multistation progressive die operation on a strip of material, during the step of punching the recesses and simultaneously forming interlocking projections in a lower die, the improvement being forming the projection with a smaller cross-sectional area than the recess and with a plurality of exterior longitudinal ridges protruding from the projection surface for securing adjacent laminations together by compressive interference fit between the ridges and the wall of the recess. The projection is formed in a lower die of the multistation progressive die apparatus, wherein the lower die has a plurality of longitudinal grooves on the interior surface of the lower die to produce the ridges protruding from the circumferential surface of the projection simultaneously as the punch produces the recess in the upper portion of the plate.
In a laminated assembly for a dynamoelectric machine of the type having interlocking projections and recesses for securing adjacent laminations together in interlocking relationship progressively throughout the length of the assembly, the improvement comprising:
In a laminated assembly for a dynamoelectric machine of the type having interlocking projections and recesses for securing adjacent laminations together in interlocking relationship progressively throughout the length of the assembly, the improvement comprising:
A method for the manufacture of a laminated assembly for an electric machine having interlocking projections and recesses for securing adjacent laminations together in interlocking relationship progressively throughout the length of the assembly prepared by a process including the steps of forming pilot holes, forming stator slots and relief holes, forming rotor slots and shaft holes, punching interlock projections and recesses, punching out the rotor, shaving the inner diameters of the stators, trimming outer diameters of the stators, forming shading coil slots, cutting stators apart, stacking laminations, and compressing stacked laminations, comprising the steps:
In a method for the manufacture of a pack of metal lamina for electrical machinery and appliances by use of a progressive die operation on a strip of material including the step of punching interlocking projections and recesses, the improvement comprising:
Dependencies are inferred from the claim text.