Abstract: .Iadd.Apparatus to produce widenings at tube ends with precise dimension of the inner surfaces of the widened zone which includes a holding device for the tube to be worked, a variable form core arranged axially in front of the center of the holding device, a device for axially displacement of the core, a cylinder axially movable over the tube for exterior calibration and adaptation of the tube end to the core, and a device to bring the core to a shape in which it can be drawn from the formed tube end. .Iaddend.
Type:
Grant
Filed:
July 19, 1976
Date of Patent:
October 18, 1977
Assignee:
Thyssen Plastik Anger
Inventors:
Max Sonnleitner, Karl Hermann Wolf, Johann Gutlhuber