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    • 9. 发明授权
    • Recirculating-ball linear bearing and guide rail therefor
    • 循环球直线轴承及导轨
    • US4692039A
    • 1987-09-08
    • US465646
    • 1983-02-10
    • Hiroshi Teramachi
    • Hiroshi Teramachi
    • B61F11/00F16C29/00F16C29/06F16C29/08
    • F16C29/0647B61F11/00F16C29/00F16C29/088
    • A combination of a guide rail and a linear bearing mounted astraddle thereon for linear rolling movement. The guide rail is of T-shaped cross section, having a head on both sides of which there are formed two pairs of parallel ball raceways of arcuate cross section, with each pair of raceways vertically spaced and angled away from each other. The linear bearing includes a body of inverted-U-shaped cross section having two pairs of ball raceways of arcuate cross section formed on its inner surfaces in opposed relation to the two pairs of raceways on the guide rail. A ball return passageway extends longitudinally through the bearing body in the adjacency of each raceway thereon. Fastened to the opposite ends of the bearing body, a pair of segmented end covers have hairpin grooves formed in their inside surfaces, each hairpin groove intercommunicating one raceway on the bearing body and one adjacent return passageway therein to allow recirculation of a group of antifriction balls. A pair of cages extend along the respective pairs of raceways on the bearing body for rollably holding the antifriction balls thereon. The cages are slotted to permit the balls to project therethrough for rolling engagement with the raceways on the guide rail.
    • 导轨和直线轴承组合安装在其上,用于线性滚动运动。 导轨为T形横截面,其两侧具有一对弓形横截面的两对平行的滚珠滚道,每对滚道垂直间隔开并相互成角度。 线性轴承包括具有倒U形横截面的本体,其具有在其内表面上形成有两对弓形横截面的滚珠滚道,所述滚珠滚道相对于导轨上的两对滚道相对。 球返回通道在其上的每个滚道的相邻处纵向延伸穿过轴承体。 一对分段的端盖固定在轴承体的相对端,一对分段的端盖在其内表面上形成有发夹槽,每个发夹槽将一个在轴承体上的一个滚道和一个相邻的返回通道相互连通,以允许一组减摩球 。 一对保持架沿轴承体上的各对滚道延伸,用于可滚动地保持其上的减摩球。 笼子开槽以允许球突出,从而与导轨上的滚道滚动接合。