Rolling unit for rolling rod-shaped or tubular bodies
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United States of America Patent
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Jun 16, 1998
Grant Date -
N/A
app pub date -
Nov 22, 1995
filing date -
Dec 28, 1994
priority date (Note) -
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Abstract
The inventive relates to a rolling unit (5) for rolling rod-shaped or tubular bodies, such as pipes, hollow sections bars, wires etc. The unit (5) is provided with three or more working rolls (20) which have respective rotation axes (A1, A2, A3) lying in a perpendicular plane to a rolling axis (L) along which the unit (5) is disposed. Advantageously, the rolls (20) are mounted on corresponding swinging arms arranged to oscillate in respective planes, perpendicular to the rotation axes (A1, A2, A3) of the corresponding rolls (20) and containing the rolling axis (L). Such a rolling unit can prevent any uncontrolled thermal expansions induced in the swinging arm by the high temperatures sometimes involved in the process, by keeping the rolls in a symmetrical position with respect to the plane of oscillation of the respective arm.
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