Bearings – Linear bearing – Recirculating
Patent
1988-05-09
1989-01-24
Hannon, Thomas R.
Bearings
Linear bearing
Recirculating
384 49, F16C 2906
Patent
active
047998032
ABSTRACT:
A ball spline linear motion rolling guide unit comprises: a ball spline shaft on which first track grooves are formed in a longitudinal direction at predetermined positions on an outer peripheral surface; a hollow outer cylinder having a hollow hole into which the ball spline shaft is slidably inserted; second track grooves formed on an inner peripheral surface of the hollow hole so as to face the first track grooves of the ball spline shaft; and balls inserted between the first and second track grooves, wherein the arc center of the second track groove formed on the outer cylinder is slightly deviated to the side of the ball spline shaft from the center of the ball inserted between the first and second track grooves, the entrance portion of the second track groove is formed by an arc surface having a diameter which is slightly larger than the diameter of the ball, thereby constructing a supporting portion of the balls, and an almost V-shaped notched groove is formed in a bottom portion of each of the first and second track grooves, thereby forming a groove having an almost arrowhead-shaped cross section, and the portion near the edge of the arrowhead-shaped groove serves as the track surface. With this structure, the small and cheap ball spline linear motion rolling guide unit can be manufactured.
REFERENCES:
patent: 253679 (1882-02-01), Bussing
patent: 4312545 (1982-01-01), Blaurock et al.
patent: 4629337 (1986-12-01), Teramachi
Hannon Thomas R.
Nippon Thompson Co. Ltd.
LandOfFree
Ball spline linear motion rolling guide unit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ball spline linear motion rolling guide unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ball spline linear motion rolling guide unit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-416954