Herringbone grooving Groove forming device for hydrostatic gas bearings

摘要

The present invention relates to a forming method of a herringbone grooved dynamic pressure gas bearing used as a bearing for a high-precision rotating body such as a head drum of a VCR (VCR), a scanner of a laser beam printer (LBP) The present invention relates to a grooving apparatus for a herringbone grooved dynamic pressure gas bearing to which a grooved bearing grooved grooved grooved bearing is applied, comprising a motor 1 as a power source, A steel ball 3 for forming a groove on the surface of the workpiece B in contact with the workpiece B and a steel ball 3 for forming a groove on the surface of the workpiece B, And a piston rod (4) which is moved up and down by a hollow (2a) of the rotating body (2) to which the workpiece (B) piston rod 5, which is difficult to be molded, Forming a herringbone Beaune tree probe of precision fine shape on the cylindrical surface to the inventors to be useful reliably perform mass.