Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1988-05-11
1989-06-13
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72 94, 72105, B21D 5126
Patent
active
048380644
ABSTRACT:
The apparatus for flanging and swaging both ends of a cylindrical can body has at least two axially opposing drivable flanging and swaging heads slidable into a can body each with a radially slidable wobbler braced centrally on a conical piece axially slidable against an inner spring. At least one wobbler comprises two ring members engaged in each other concentrically of which the outer one is stepped to form a circular shoulder for receiving the inner one. The outer ring member supports itself on a collar guided axially slidable along a spindle against an outer spring. The inner ring member, which has an outer diameter which is less than or about equal to the inner diameter of the unflanged can body, supports itself on one side on the conical piece and on the other side on a disk like abutting member. Prior to the deformation forming the flanged edge the outer ring member is displaced axially by engaging the can body to such an extent that the edge region of the can body contacts on the circumferential surface of the inner ring member. On engagement of a flanging and swaging roller a hook like flanged edge arises which is clamped between the flanging and swaging roller and the outer ring member for further deformation.
REFERENCES:
patent: 3754424 (1973-08-01), Costanzo
patent: 4023250 (1977-05-01), Sproul et al.
patent: 4272977 (1981-06-01), Gombas
patent: 4308737 (1982-01-01), Kannegiesser et al.
patent: 4512172 (1985-04-01), Abbott et al.
Dubno Herbert
Lanico-Maschinenbau Otto Niemsch GmbH
Larson Lowell A.
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