Process for manufacturing screws and a device for actuating the process
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United States of America Patent
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-
Sep 3, 2002
Grant Date -
N/A
app pub date -
Jun 23, 2000
filing date -
Dec 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for manufacturing a screw (2) comprises a cylindrical support (3) having a horizontal axis (x-13 x)and being rotatable there about. A straight bar (7) is wound spirally about the support (3). The bar (7) is constrained to a guide (8) and can perform movements in a parallel direction to the axis (x--x) of the support (3) on command of a translator provided with an endless screw (14). The process for manufacturing the screw comprises controlling axial movement of the guide (8) in a predetermined rapport with the rotation of the support (3). The invention is particularly applicable in the manufacture of a screw for a screw conveyor.
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