Ball spline bearing provided with a driving unit

Details Ball spline bearing provided with a driving unit Ball spline bearing provided with a driving unit

1987-07-22

1988-08-16

Petrakes, John

Bearings

Linear bearing

Recirculating

384 45, 464168, F16C 2906

Patent

active

047640324

ABSTRACT:
A ball spline bearing provided with a driving unit wherein for a number of balls, endless circulation passages including track grooves in sets of two are formed in an external cylinder member, in which there is removably inserted a spline shaft having L-type notched grooves to form protrusions extending in the axial direction; on the both sides of the protrusion are formed track grooves respectively in opposition to the track grooves in the external cylinder member; each section remaining after the notched grooves and the protrusions have been removed from the spline-shaft circumference has a long enough circumferential length to form comparatively large rack teeth to bear a large load.
By providing a pinion to engage with the rack, an accurate positioning in the rectilinear direction can be attained based on the engagement, further a small type of driving unit may be adopted to the bearing, to the reduction of manufacturing cost of the bearing.

REFERENCES:
patent: 2945366 (1960-07-01), Sears
patent: 4582370 (1986-04-01), Ogawa
patent: 4629337 (1986-12-01), Teramachi

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