Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1991-03-06
1991-12-17
Cuchlinski, Jr., William A.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 27, 277 81R, 277 85, 408 56, 409135, F16J 1540, B23B 5106
Patent
active
050729489
ABSTRACT:
A high speed machining system (10) including a machine tool (16) mounted on a hollow shaft (14) rotatable at high speeds and the tool (16) being operable at high feed rates. Liquid cutting coolant (22) flows to the tool (16) through the hollow shaft (14) to flush away debris from the tool (16) and for cooling the system (10). Drive means (18) including windings rotate the shaft (14), which is supported by bearings. The windings and bearings have the characteristic of long life in an environment free of liquid cutting coolant (22). The high speed machining system (10) includes a seal assembly (30) to prevent the liquid (22) from entering the liquid-free environment of the bearings and the windings. The seal assembly (30) includes annular means for urging (52) a stationary sealing face (42) against and in annular contact with a rotating hardened sealing surface (38) to form an annular primary seal (54) for isolating the liquid (22 ) from the bearings and windings. First means for sealing (66) are positioned between an enlarged diameter portion of an annular face seal (40) and an inner cylindrical wall (60) of an annular retainer (58) to suppress leakage of liquid (22) therebetween. Second means for sealing (68) are positioned between an outer cylindrical wall (62) of the retainer (58) and a bore (56) defined within a housing (12) to form a tertiary seal (68) and suppress leakage of liquid (22) therebetween. In cooperation, the annular primary seal (54) and the secondary and the tertiary seals (68) cooperate to substantially eliminate leakage of liquid (22) outside the seal assembly (30) when the liquid (22) is flowing through the hollow shaft (14) to the machine tool (16) at sufficiently high pressures and volumes to remove debris from adjacent the machine tool (16), and to cool the high speed machining system (10) while the shaft (14) rotates at high speed. In alternate embodiments of the invention, different structures of seal interface are disclosed. Each has the attribute of using the pressure of liquid (22) flowing in the liquid path to augment the annular means (52) for urging the annular face seal (40) against and in annular contact with the hardened sealing surface (38) to form the primary seal (66) therebetween.
REFERENCES:
patent: 2509091 (1950-05-01), Faccou
patent: 2844393 (1958-07-01), Jensen
patent: 2871039 (1959-01-01), Payne
patent: 2871040 (1959-01-01), Payne
patent: 2964340 (1960-12-01), Kinzie et al.
patent: 2985468 (1961-05-01), Shaw et al.
patent: 3278191 (1966-10-01), Gits et al.
patent: 3416808 (1968-12-01), Voitik
patent: 3552752 (1971-01-01), Lojkutz
patent: 3578344 (1971-05-01), Yost
patent: 3784213 (1974-01-01), Voitik
patent: 3837658 (1974-09-01), Skinner et al.
patent: 3895424 (1975-07-01), Hautau
patent: 4095808 (1978-06-01), Glasson
patent: 4291887 (1981-09-01), Etsion et al.
patent: 4294317 (1981-10-01), Amoroso
patent: 4296935 (1981-10-01), Inouye
patent: 4304408 (1981-12-01), Greenawalt
patent: 4328973 (1982-05-01), Delbridge
patent: 4415165 (1983-11-01), Martini
patent: 4426092 (1984-01-01), Wiese
patent: 4463958 (1984-08-01), Butler
patent: 4477088 (1984-10-01), Picard
patent: 4578003 (1986-03-01), Eckle
patent: 4619458 (1986-10-01), Mitumaru
patent: 4639000 (1987-01-01), Warner
patent: 4659092 (1987-04-01), Wallace et al.
patent: 4722404 (1988-02-01), Evans
patent: 4832080 (1989-05-01), Smith, III
Cuchlinski Jr. William A.
DePumpo Daniel G.
Ford Motor Company
Malleck Joseph W.
Sadler Clifford L.
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