Crown die for thread rolling of applicator rolls
AssigneeXerox Corporation
InventorsEdward George Williams, Richard George LaBombard
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Abstract
A die for through feed thread rolling of fine external threads on a cylindrical work piece or applicator roll is given whereby a die having substantially uniform threads and a variable diameter is employed.
Claims5
A thru feed thread rolling die for producing metal flow on the exterior surface of a cylindrical metal work piece to form a continuous, substantially straight uniform thread configuration free of a crevice along the thread crest, comprising a roll formed with a substantially uniform external thread having a variable diameter profile corresponding to the arc of a segmented circle.
A thru feed thread rolling die for producing metal flow on the exterior surface of a cylindrical work piece to form a continuous, substantially uniform thread configuration comprising a roll formed with a substantially uniform external thread having a substantially uniform depth and having a variable crest diameter profile which is greater at some point intermediate of the die ends and smaller at the die ends with a substantially uniform transition between the greater diameter and smaller diameter.
Dependencies are inferred from the claim text.