Dead center for machine tools

Details Dead center for machine tools Dead center for machine tools

1997-07-29

1999-09-28

Pitts, Andrea L.

Turning

Lathe

Center

82170, B23B 2302

Patent

active

059570172

ABSTRACT:
A dead center work support for a machine tool comprises a plurality, preferably at least three concentrically rounded raised radial projections defining the bearing surface of the dead center. The radial projections may be disposed either on the external or internal surfaces, which can be cylindrical, conical, or spherical. Between bearing surfaces a cut out section can be provided so that a cutting tool can run into the void to perform facing and turning of a center supported workpiece. Preferred embodiments comprise provisions for supplying lubricating oil through the tool to achieve continuous lubrication of the interface between the work and the center. The bearing surfaces may comprise hard, high-temperature resistant material, such as tungsten carbide, or ceramic.

REFERENCES:
patent: 322322 (1885-07-01), Rich
patent: 412926 (1889-10-01), Knight
patent: 1539337 (1925-05-01), Vervoort
patent: 1681087 (1928-08-01), Becker
patent: 1889502 (1932-11-01), Smith
patent: 1891102 (1932-12-01), Marquis
patent: 2397371 (1946-03-01), Reynolds
patent: 3756102 (1973-09-01), Casey
patent: 4111082 (1978-09-01), Kohori

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