BALL SCREW FOR MACHINE TOOLS
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United States of America Patent
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Issued Date -
Jun 21, 2007
app pub date -
Nov 13, 2006
filing date -
Nov 15, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A ball screw for machine tools comprising a rotatably supported hollow threaded spindle, a drive unit for the threaded spindle, a nut provided on the threaded spindle so as to be longitudinally movable and a cooling system of the threaded spindle comprising a supply port and a discharge port for a cooling liquid flowing inside of the hollow threaded spindle. For obtaining an enhanced cooling performance with a reduced technical complexity a supply channel and a return channel communicating with it are provided in the cavity of the threaded spindle, and the supply port and the discharge port are provided at the same end of the threaded spindle.
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