Method for forming an annular member

Details Method for forming an annular member Method for forming an annular member

1994-10-27

1995-11-14

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

During rotation of work

72115, 72 67, B21H 106

Patent

active

054655986

ABSTRACT:
An annular member is placed on a forming profile of a convex die without fixing the annular member to the convex die. Then, the convex die is moved toward a concave die which has an axis inclining with respect to an axis of the convex die. When the convex die is moved toward the concave die, the concave die is revolved around the axis of the convex die. The concave die does not revolve about its own axis. Revolving the concave die around the axis of the convex die may be replaced by forcibly rotating the convex die about its own axis. When a compression load is imposed on the annular member, opposed ends of the annular member are formed simultaneously.

REFERENCES:
patent: 479181 (1892-07-01), Brown et al.
patent: 859317 (1907-07-01), Miller et al.
patent: 2942567 (1960-06-01), Kargard et al.
patent: 2983033 (1961-05-01), Cox
patent: 3690278 (1972-09-01), Rautavalta

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