Apparatus and method for precision machining of metal rings

Details Apparatus and method for precision machining of metal rings Apparatus and method for precision machining of metal rings

1995-10-27

1998-01-27

Howell, Daniel W.

Turning

Process of turning

29559, 269104, 279110, B23B 100, B23B 3100

Patent

active

057111952

ABSTRACT:
There is disclosed an apparatus for machining large diameter, thin-walled steel rings to precise tolerances. A ring of metal stock is placed within the jaws of a group of screw-type clamps located on a flat lathe faceplate. The clamps are evenly spaced around the ring of metal stock and each contains one or more pairs of opposing screws. The clamp screws are slowly advanced until the screws gently touch the inner surface and outer surface of the metal stock ring. The opposing screws are then gradually tightened until the ring of metal stock is locked in place. The equal and opposite forces exerted by the opposing screws hold the metal stock rigidly in place without inducing mechanical stresses in the ring that would otherwise warp the ring while it was mounted on the lathe faceplate.

REFERENCES:
patent: 368693 (1887-08-01), Taylor
patent: 1893267 (1933-01-01), Bickel
patent: 2703242 (1955-03-01), Sloan et al.
patent: 3026746 (1962-03-01), Mueller et al.
patent: 3604717 (1971-09-01), Hohwart
patent: 4575911 (1986-03-01), Laszlo
patent: 4930955 (1990-06-01), Kawano et al.

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