Tool assembly for forming internal grooves in tubes

Metal deforming – By use of tool acting during relative rotation between tool... – Tool orbiting or rotating about an axis

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72125, 72436, B21H 308

Patent

active

040967239

ABSTRACT:
A tool assembly for forming internal threads on the interior surfaces of tubular structures which comprises a substantially cylindrical tool holder defining circumferentially about one end thereof, a plurality of disc-shaped forming edges, said tool holder adapted for rotational contact with a tubular workpiece, a rotating means located in operative contact with said tool holder, said rotating means situated for longitudinal reciprocation along an inclined track, a workpiece securement means comprising opposed clamps or the like located on a base structure and adapted to secure said workpiece in axial alignment with said tool holder, and a track comprising paired track members or rails associated with said workpiece securement means, wherein said securement means and said track are inclined with respect to the horizontal whereby said workpiece is apically situated with respect to said track to enable said tool holder to traverse the interior of said workpiece while moving on said track. The tool holder of the present invention is of simple construction and confers an economy of processing.

REFERENCES:
patent: 335727 (1886-02-01), Voigt
patent: 1081916 (1913-12-01), Sampson
patent: 1510084 (1924-09-01), Brainerd et al.
patent: 2611413 (1952-09-01), Molinare
patent: 2927372 (1960-03-01), Powell
patent: 3177691 (1965-04-01), Koehler

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