Patent ID: 6450073
Filing Date: 2002-09-17
Classification: B23Q,F16C,Y10T

Abstract:
A multi-spindle automatic bar machine having a housing, a plurality of spindles, each with a collet at one end and mounted with a rotating head which is carried by said housing, said rotating head being adapted to rotate said spindles through a plurality of tooling stations, the improvement comprising:each said spindle, having a bearing surface about its periphery adjacent said one end; said rotating head having a plurality of cylinders forming bearings located about its circumference and a supply line to each said cylinder, each said cylinder having a circular inner bearing surface which engages with a respective of said spindle bearing surfaces forming a machine bearing; and, said cylinder bearing surface having a spiral groove separated by a spiral flat with said spiral groove being adapted to provide a passageway for lubricant, supplied through said supply lines, over said entire machine bearing lubricating the entire surface of said flat and said flat engaging spindle bearing surface.