Bearings – Linear bearing – Recirculating
Patent
1991-02-05
1993-09-14
Footland, Lenard A.
Bearings
Linear bearing
Recirculating
384 45, F16C 2906
Patent
active
052442837
ABSTRACT:
A double rail linear motion guide assembly suitable for carrying a load large in weight and size is provided. A pair of main and auxiliary guide rails are fixedly attached to a base. An inner guide groove is formed at each of the side surfaces of the main guide rail having a rectangular cross section. A U-shaped main slider provided with a pair of endless circulating paths is fixedly attached to a table and slidably mounted on the main guide rail in a straddling fashion and formed with an outer guide groove at its inner side surface. A plurality of rolling members are provided in the endless circulating paths. The auxiliary guide rail has a flat top guide surface and at least one flat bottom guide surface. An auxiliary slider having either a generally C-shaped or L-shaped cross section is fixedly attached to the table and slidably mounted on the auxiliary guide rail and is formed with endless circulating paths filled with rolling members. A predetermined gap is provided between any vertical side surface of the auxiliary guide rail and an opposite vertical side surface of the auxiliary slider to thereby allow a relative movement in the transverse direction between the auxiliary guide rail and the auxiliary slider.
REFERENCES:
patent: 4603922 (1986-08-01), Teramachi
patent: 4988215 (1991-01-01), Osawa
patent: 5005988 (1991-04-01), Lyon
Footland Lenard A.
Nippon Thompson Co. Ltd.
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