Turning – Severing or cut-off – Processes
Patent
1991-05-31
1993-05-18
Bilinsky, Z. R.
Turning
Severing or cut-off
Processes
82 19, 82 48, 82123, B23B 100, B23B 516
Patent
active
052110893
ABSTRACT:
A cam-controlled tube end finishing apparatus includes a cutting bit having multiple cutting faces, a platform supporting the cutting bit adjacent to the end of a rotating hollow tube, and a pair of cam-controlled mechanisms for moving the platform and thereby the cutting bit relative to the end of the rotating tube along a closed polygonal path of travel for severing the tube end. An initial portion of the rotating tube is severed in a direction from the outside to the inside of the tube at an angle to a plane normal to the rotational axis of the tube so as to define an initial cut face on the tube end extending in inclined relation to a plane normal to the rotational axis of the tube. A final portion of the rotating tube is severed in a direction from the inside to the outside of the tube at another angle to a plane normal to the rotational axis of the tube so as to provide a substantially burr-free cut face on the tube end extending in a plane normal to the rotational axis of the tube.
REFERENCES:
patent: 2350535 (1944-06-01), Sarulla
patent: 3127802 (1964-04-01), Zierden
patent: 4165661 (1979-08-01), Wasco, Jr. et al.
patent: 4486131 (1984-12-01), Eckle
Bilinsky Z. R.
Westinghouse Electric Corp.
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