CONCENTRICITY ADJUSTING TYPE BEARING SCREW TRANSFERRING DEVICE CAPABLE OF ACCURATELY COINCIDING AXIAL CONCENTRICITY BETWEEN A SCREW AND A HOUSING UNIT AND MAINTAINING THE COINCIDED AXIAL CONCENTRICITY

摘要

PURPOSE: A concentricity adjusting type bearing screw transferring device is provided to maintain an accurate position in the motions of a target object, thereby providing a precise working environment.;CONSTITUTION: A concentricity adjusting type bearing screw transferring device includes a screw (100), a housing unit (200), a rolling-contact unit (300) for axial movement, and a rolling-contact unit (400) for setting concentricity. The screw forms a contact portion of a ridge shape or a furrow shape. The housing unit receives the screw inside to be moved along the longitudinal direction. The rolling-contact unit for axial movement is in rolling-contact with the screw for guiding a linear movement in the longitudinal direction of the housing unit in the axial direction. The rolling-contact unit for setting concentricity is installed to be in rolling-contact with the screw for adjusting the axial concentricity between the screw and the housing unit.;COPYRIGHT KIPO 2013