Metal deforming – By use of tool acting during relative rotation between tool... – Tool orbiting or rotating about an axis
Patent
1980-03-21
1981-12-29
Smith, James G.
Metal deforming
By use of tool acting during relative rotation between tool...
Tool orbiting or rotating about an axis
72325, B21B 306
Patent
active
043075932
ABSTRACT:
Collar forming apparatus for forming an upstanding flange around an existing hole in a tube or plate comprising a pair of forming members mounted on and movable axially and radially with respect to the forming head between retracted positions and extending collar forming positions displaced axially and radially away from the retracted positions wherein at least portions of the forming members underlie the edge of the wall surrounding the opening. The forming members are moved to their collar forming positions by a wedge member that is movable axially with respect to the forming head to a predetermined axial position. Abutment means in the form of cooperating surface portions on the wedge member and the formation means acts between the wedge member and the formation means to impart radial and axial forces on the formation means when the wedge member is moved to its predetermined axial position to move the forming members to their collar forming positions. Means is provided for maintaining the wedge member in its predetermined axial position to provide axial and radial support for the forming members as the material is worked in forming a collar.
REFERENCES:
patent: 3592038 (1971-07-01), Larikka
patent: 3817071 (1974-06-01), Chalvignac
patent: 3844149 (1974-10-01), Hansen
Smith James G.
T/Drill, Inc.
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