Material for rail of linear guide, rail for linear guide, process of manufacturing rail of linear guide, and linear guide
AssigneeNsk Ltd.
InventorsKunio Kawashima, Hidenori Kawai, Masaru Akiyama
Life of this patent
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Abstract
The top portion of a material for a rail of a linear guide is formed in a convex shape. In this convex shape, portions protruding to the side of a top surface are removed beforehand by rolling raceway grooves in side portions of a member of rectangular section, the top surface of which is flat. A rail made from this material by rolling raceway grooves in side portions have a flat top surface.
Claims2
A linear guide comprising:
- a rail having a top surface formed in a convex shape as a whole, wherein the distance (h) from the center position of raceway grooves formed by rolling each of two side surfaces to a bottom surface is not less than 2.25 times the diameter of rolling elements which are in rolling contact with said raceway grooves;
- and
- a moving body, said moving body comprising paths in which a plurality of rolling elements are circulated and moving relative to the rail along said rail via said rolling elements.
A rail for a linear guide, wherein the distance from the center position of raceway grooves formed by rolling in each of two side surfaces of the rail to a bottom surface is not less than 2.25 times the diameter of rolling elements which are in rolling contact with said raceway grooves, further comprising a top surface formed in a convex shape as a whole.
Dependencies are inferred from the claim text.