Apparatus for producing annular metallic blanks for metallic rin

Details Apparatus for producing annular metallic blanks for metallic rin Apparatus for producing annular metallic blanks for metallic rin

1975-11-04

1977-05-24

Lanham, C.W.

Metal deforming

By relatively movable offset tool-faces

With tool motion in fixed path

2915662, 29412, 59 35R, 72424, 72427, B21D 1106

Patent

active

040247481

ABSTRACT:
An apparatus for producing annular metallic blanks for metallic rings having a desired inner diameter wherein a length of elongated metallic material having a predetermined cross-sectional configuration is formed into a spiral shape having an inner diameter smaller than the desired diameter of the ring and such formed material is forcibly and coaxially disposed around a cylindrical portion of a holding means having a diameter larger than the inner diameter of the ring. Thereafter, the spiral formed material around the cylindrical portion is cut along a straight line parallel to the axis of the cylindrical portion to provide a plurality of metallic bends, and the bends are removed from the cylindrical portion to be used as annular metallic blanks for the metallic rings. In order to obtain a desired ring from the annular blank formed as described above, the ends of the annular blank are later joined together by welding such as by a butt welding operation.

REFERENCES:
patent: 1161001 (1915-11-01), Merritt
patent: 1801363 (1931-04-01), Mueller
patent: 2128437 (1938-08-01), Stenwall
patent: 3613195 (1971-10-01), Senior
patent: 3938235 (1976-02-01), Wendt

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