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US 2003/0156768 A1Published application
Linear motion guide unit
AssigneeNippon Thompson Co., Ltd.
InventorYoshiharu Miyata
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AssigneeNippon Thompson Co., Ltd.
InventorYoshiharu Miyata
Estimating the term…
A linear motion guide unit makes it possible to mount precisely a track rail to a machine bed and also reduce sliding resistance that might be encountered when a slider moves over the track rail. On a sidewise outside surface of a side wall of the track rail there is made a bulged portion that spreads in width H from a lower surface of the side wall up to a level above the center of gravity G of the track rail. The bulged portion has a sidewise outermost surface that is processed to provide a surface of reference, which can match a mating surface of reference made on the fixed bed. The slider has an upper seal to close a clearance left between a fore-and-aft side of the slider and a lengthwise inside surface of any one of the side walls of the track rail, while a recess is cut in the inside surface of the side wall in a way extending lengthwise of the track rail so as to allow the upper seal to come in sliding contact at a lip thereof with the recess.
A linear motion guide unit, comprising a track rail to be mounted to a bed and having a pair of side walls extending lengthwise in parallel with one another, and a slider movable lengthwise along the track rail in a guiding way defined between the side walls of the track rail, wherein the side walls of the track rail are each made on sidewise outside surface thereof with a bulged portion having a width across from a lower surface of the side wall to a level above the center of gravity of the track rail, and also the bulged portion has a surface finished in a surface of reference matching a mating surface of reference on the bed.
A linear motion guide unit, comprising a track rail to be mounted to a bed and having a pair of side walls extending lengthwise in parallel with one another, and a slider movable lengthwise along the track rail in a guiding way defined between the side walls of the track rail, wherein the slider has an upper seal to close a clearance left between a fore-and-aft side of the slider and a lengthwise inside surface of any one of the side walls of the track rail, while a recess is cut in the inside surface of the side wall in a way extending lengthwise of the track rail so as to allow the upper seal to come in sliding contact at a lip thereof with the recess.
Dependencies are inferred from the claim text.