Method and apparatus for forming an end portion of a cylindrical

Details Method and apparatus for forming an end portion of a cylindrical Method and apparatus for forming an end portion of a cylindrical

1998-11-16

2000-05-30

Tolan, Ed

Metal deforming

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

Tool orbiting or rotating about an axis

72 82, 72 94, 72101, B21D 302

Patent

active

06067833&

ABSTRACT:
A method and apparatus for forming an end portion of a cylindrical member or cylinder includes at least one roller supported on a main shaft to be radially moved to and from the main shaft. The cylinder is supported to position the central axis thereof on the plane including the main shaft. Then, at least one of the cylinder and the roller is driven to be rotated relative to each other about an oblique axis inclined against the central axis of the cylinder, while the roller is moved radially toward the oblique axis, with the roller being in substantial contact with the outer surface of the one end portion of the cylinder. As a result, the one end portion of the cylinder is formed into a reduced diameter portion such as a tapered portion having the oblique axis.

REFERENCES:
patent: 3340713 (1967-09-01), Webb
patent: 3533259 (1970-10-01), Marcovitch
patent: 4061009 (1977-12-01), Kaporovich
patent: 4143535 (1979-03-01), Bouman
patent: 4563887 (1986-01-01), Bressan et al.
patent: 5570603 (1996-11-01), Chatterly et al.
patent: 5758532 (1998-06-01), Massee
patent: 5901595 (1999-05-01), Massee
Mathew, P., "Eccentric Metal Spinning--A New Method to Produce Multi-Recessed Parts", Metallurgia and Metal Forming, Dec. 1974, pp. 378-379.
Sereda, V.G., "Calculation of the Energy and Force Parameters in Planetary Rolling of Tubular Blanks," Kuznechno-shtampovochnoe proizvodstvo, 1989, No. 5, pp. 2-4.

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