专利名称：Ball spline bearing provided with a driving
unit
发明人：Kazuhiko Tanaka申请号：US07/076279申请日：19870722公开号：US04764032A公开日：19880816
摘要：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 anexternal 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 bothsides of the protrusion are formed track grooves respectively in opposition to the trackgrooves in the external cylinder member; each section remaining after the notchedgrooves and the protrusions have been removed from the spline-shaft circumference hasa long enough circumferential length to form comparatively large rack teeth to bear alarge load.
< P>By providing a pinion to engage with the rack, an accurate positioning in therectilinear direction can be attained based on the engagement, further a small type ofdriving unit may be adopted to the bearing, to the reduction of manufacturing cost of thebearing.
申请人：NIPPON THOMPSON CO., LTD.
代理机构：Rogers & Killeen
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