Lubricating and cooling system for spindle bearing assembly
AssigneeSeiko Seiki Kabushiki Kaisha
InventorShigenori Ando
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Abstract
A lubricating and cooling system for a spindle bearing assembly in which the spindle is rotatably mounted in bearings in a closed spindle housing comprises means for supplying lubricating oil to the bearings and cooling oil to the bearings and spindle, the lubricating admission passages and cooling oil admission passages being separate from one another and being supplied from separate lubricating oil and cooling circuits so that the lubricating and cooling are controlled individually and selectively.
Claims10
A lubricating and cooling system for a spindle bearing assembly comprising a closed spindle housing, axially spaced spindle bearings in said housing and a spindle rotatably supported by said bearings, said housing having separate admission ports for supplying lubricating oil and cooling fluid to said bearings, said system comprising means for supplying lubricating oil under pressure to said lubricating oil admission ports, means for cooling cooling fluid and supplying said cooled cooling fluid to said cooling fluid admission ports and means for individually controlling the rate at which said lubricating oil is supplied to said lubricating oil admission ports and the rate at which cooling fluid is supplied to said cooling fluid admission ports.
A lubricating and cooling system for a spindle bearing assembly comprising a closed spindle housing, axially spaced spindle bearings in said housing and a spindle rotatably supported by said bearings, said housing having separate admission ports for supplying lubricating oil and cooling oil to said bearings, said system comprising:
- a tank in which said lubricating and cooling oil is stored,
- means for cooling the oil in said tank,
- a lubricating oil circuit for delivering a portion of said oil from said tank to said lubricating oil admission ports under pressure,
- a cooling oil circuit for further cooling a portion of oil from said tank and delivering said cooled oil to said cooling oil admission ports, and
- separate flow control means in said lubricating oil circuit and said cooling oil circuit for individually controlling the rate at which said oil is delivered to said lubricating oil admission ports and the rate at which said further cooled oil is delivered to said cooling oil admission ports.
Dependencies are inferred from the claim text.