Method of manufacturing annular body

Details Method of manufacturing annular body Method of manufacturing annular body

2008-01-15

2008-01-15

Hong, John C. (Department: 3726)

Metal working

Method of mechanical manufacture

Wheel making

Reexamination Certificate

active

07318279

ABSTRACT:
A rolled steel plate1wound in a roll shape is unrolled and is cut in given dimensions to form a blank2. In this case, a cut surface2ais caused to incline at 1 to 3 degrees relative to the thickness direction of the blank2, wherein the inclination direction of the cut surfaces2a,2aon each side is reversed. The blank2cut in this manner is roll-formed to cause the cut surfaces2a,2ato confront each other. Since the cut surfaces2a,2aon each side incline at 1 to 3 degrees in the opposite direction as described above, the cut surfaces2a,2aare caused to be parallel. Then, the confronting sections are laser-welded to form a cylindrical body3.

REFERENCES:
patent: 2004/0016121 (2004-01-01), Merz
patent: 03-275289 (1991-12-01), None
patent: 09-047887 (1997-02-01), None

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