Turning – Lathe – Work rest
Patent
1989-08-10
1991-05-14
Schmidt, Frederick R.
Turning
Lathe
Work rest
82162, B23B 2500
Patent
active
050145800
ABSTRACT:
A centering stand (2) for positioning a work piece for rotary skiving and roller burnishing operations resulting in a hollow cylinder (4). The centering stand includes a vice (8) having a pair of grips (26, 26') for retaining the cylinder in proper position for rotary operations. A base plate (10) is movable together with the vice between a raised position supporting the cylinder and a lower position removed therefrom. The centering stand includes a plurality of guide members (14) having a track (20) formed on in inner surface (15) of each of the guide members for movement of the base plate in the track. The track includes a recess (21) formed on the inner surface of each guide member and a track plate (19) mounted to an outer surface of the guide members. Thus, the base vertically slides within the recesses and is retained in the track by the track plate. Positive positioning means (12) automatically locates the base plate to ensure alignment and centering of the cylinder in proper position for rotary operation, thereby minimizing bowing of the cylinder. The positive positioning means includes a dovetail (24) formed on an upper surface (9) of the base plate and a lip (22) cooperating with the dovetail disposed at an upper end (13) of the guide members. A lift (16) is provided for moving the base plate within the track.
REFERENCES:
patent: 1534963 (1925-04-01), Judd
patent: 3320839 (1967-05-01), Dinsmore
patent: 3600990 (1971-08-01), Renoux
patent: 4463635 (1984-08-01), Hafla et al.
Cruz Lawrence
Schmidt Frederick R.
Sierra Machinery, Inc.
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