Bearings – Linear bearing – Recirculating
Patent
1993-12-30
1996-03-26
Footland, Lenard A.
Bearings
Linear bearing
Recirculating
F16C 3106
Patent
active
055015271
ABSTRACT:
A linear movement ball guideway including a slide block, a guide rail and multiple loaded and unloaded ball members, wherein the slide block is composed of a slide block main body and two-end caps and the guide rail is formed with two lateral concave surfaces, while the slide block is formed with a corresponding convex surface and the concave surface and convex surface are formed with Gothic type ball member grooves defining lateral ball member passages within which the loaded and unloaded ball members circularly roll. An upper portion of the slide block are formed semicircular surface defining upper ball member passages, whereby a top point of the oaded ball member contacts with the semicircular surface, while a bottom point of the loaded ball member contacts with an upper surface fo the guide rail. The lateral loaded ball members bear the lateral force and moment in any direction from the slide block and enable the guide rail to bear stronger load and shear force. The upper ball members bear the upper load and torque and adjust the pre-load and correct the installation geometric error of the lateral ball members. The lateral ball member passages include 90 degree or straight lateral turning grooves, including an assistant turning block for smoothly guiding the loaded ball members into unloaded ball member holes. An engaging snap spring means is disposed between the end caps to hold the lateral ball members and prevent the same from dropping outside the guide rail.
REFERENCES:
patent: 5097716 (1992-03-01), Barbat et al.
patent: 5108197 (1992-04-01), Morita
patent: 5176454 (1993-01-01), Schlereth
Footland Lenard A.
Freiburger Thomas M.
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