Sheet-metal type endless rectilinear motion rolling guide unit

Details Sheet-metal type endless rectilinear motion rolling guide unit Sheet-metal type endless rectilinear motion rolling guide unit

1988-03-18

1989-01-17

Footland, Lenard A.

Bearings

Linear bearing

Recirculating

F16C 2906

Patent

active

047984791

ABSTRACT:
There is provided a sheet-metal type endless rectilinear motion rolling guide unit comprising U-shaped bed and table which are arranged so that their opening portions face each other. A first track groove is formed in each outside wall of the bed in the longitudinal direction. A second track groove is formed in each inside wall of the table in the longitudinal direction. Balls are inserted between these track grooves, thereby relatively rectilinearly moving the bed and table. A third tract groove is formed in each outside wall of the table at the position corresponding to the second track groove. A U-shaped return passage side plate forming a return passage of the balls is attached to each outside wall of the table in parallel with the second track groove. An end cap formed with a direction turning passage to couple the second track groove with the return passage is attached to each end of the track groove portion in the slide direction of the table. The return passage side plate and the end cap can be integrally molded by the same material. With this structure, the rolling guide unit can be cheaply manufacturing with high rigidity and high accuracy.

REFERENCES:
patent: 4478462 (1984-10-01), Teramachi
patent: 4552416 (1985-11-01), Lehmann et al.
patent: 4647226 (1987-03-01), Mottate
patent: 4655612 (1987-04-01), Lunz et al.

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