Turning – Lathe – Work rest
Patent
1997-03-19
1999-01-19
Pitts, Andrea L.
Turning
Lathe
Work rest
82162, 82170, 279133, B23B 1312
Patent
active
058603417
ABSTRACT:
A self-centering steady of the closed type includes a housing (H), an actuator (14), a center gripping arm (11) and a pair of side gripping arms (12, 13) intended to grip a workpiece (P) under the action of the actuator (14). The actuator is provided with cam surfaces (31, 32) for engaging the side gripping arms (12, 13) in order to cause the workpiece engagement and/or disengagement movements. Each side gripping arm (12, 13) is connected to the actuator (14) and is slidably received in a rotating element (26) provided in the steady housing (H). The center gripping arm (11) is slidably received in a slide guide (G) provided in the steady housing (H). The rotating elements (26) together with the side gripping arms (12, 13) and with the center gripping arm (11) form a closed structure which prevents dust and scraps from entering the steady housing (H), both with the gripping arms (11, 12, 13) in the retracted and in the extended positions.
REFERENCES:
patent: 3320839 (1967-05-01), Dinsmore
patent: 4754673 (1988-07-01), Hiestand
patent: 5058468 (1991-10-01), Lessway
patent: 5222421 (1993-06-01), Ushiro
patent: 5481951 (1996-01-01), Kiefer
English language abstract of Japanese Patent 61-159343, Jul. 1986.
Morari Giuseppe e Marilena S.n.c.
Pitts Andrea L.
Tsai Henry W. H.
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