Gear cutting – milling – or planing – Milling – With means to control temperature or lubricate
Patent
1994-12-15
1996-01-30
Howell, Daniel W.
Gear cutting, milling, or planing
Milling
With means to control temperature or lubricate
408 56, 409137, 409231, B23Q 1100
Patent
active
054876281
ABSTRACT:
A machine tool comprises a spindle head (2) having a vertical bore (2a); a spindle (20) provided in said vertical bore (2a) and including a tapered hole (24) at the lower end of said spindle (20); bearing means (22a) provided in said vertical bore (2a) for rotatably supporting said spindle (20); a non-contact sealing means (10a) for sealing the bearing means (22a). The machine tool further comprises a device for preventing a cutting fluid from entering the bearing for the spindle. The device comprises means (6a, 6b) for forming a pressure chamber (6) provided so as to enclose the non-contact sealing means (10a); and means (44) for supplying air to the pressure chamber (6).
REFERENCES:
patent: 3555962 (1971-01-01), Wolf et al.
patent: 4951578 (1990-08-01), von Haas et al.
patent: 5290130 (1994-03-01), Beretta
Fanuc Ltd.
Howell Daniel W.
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