1980-09-02
1983-03-15
Martin, Jr., William D.
Cutlery
F16C 2906
Patent
active
043765564
ABSTRACT:
A bearing arrangement for a wide variety of apparatus, such as machine tool tables, tool slides and carriages, wherein the bearing on one side of a movable element is preloaded by means of a hydraulic device forming a part of or connected to the opposing bearing on the other side of the movable element. A movable element, such as a machine tool table, is received in a support base having a lower guide surface and an upper guide surface. A roller-type bearing is secured to the table and bears against the guide surface which faces it, and, in this case, the last-mentioned guide surface is machined extremely flat and true relative to the tool. A second roller-type bearing is secured to the opposite side of the table and is urged against a guide surface by a hydraulic piston and cylinder. The hydraulic pressure which is developed presses the first roller bearing tightly against the respective guide surface and preloads the bearing so that the table will move with extreme accuracy relative to that surface. Since this surface is flat and true relative to the tool, the table will accordingly move with very high accuracy relative to the tool as well. The piston and cylinder develops a constant force due to the presence of a relief valve in the hydraulic supply line so that a constant preload of the bearing running against the true surface can be achieved. Because of the available stroke of the piston, parallelism of the two guide surfaces is no longer necessary. Only one true surface for each set of bearing pairs is necessary, thereby greatly simplifying machining and setup where extremely accurate linear movement is necessary.
REFERENCES:
patent: 2440919 (1948-05-01), Shaw
patent: 3272570 (1966-09-01), Zenk
patent: 3301611 (1967-01-01), Dunlap
patent: 3384425 (1968-05-01), Brown
patent: 3395947 (1968-08-01), Brown
patent: 3564970 (1971-02-01), Larsen
patent: 3608985 (1971-09-01), Swanson
patent: 3619013 (1971-11-01), Jones
patent: 3658393 (1972-04-01), Luthi
patent: 3749509 (1973-07-01), Lukoshnikov
patent: 3772961 (1973-11-01), Siebert
patent: 3871721 (1975-03-01), Siebert
patent: 3951471 (1976-04-01), Langenstein
patent: 4080009 (1978-03-01), Marathe et al.
patent: 4114959 (1978-09-01), Christ
Bergman Raymond A.
Hemmelgarn Donald J.
LandOfFree
Linear bearing arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linear bearing arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear bearing arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1656968