| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint mechanism capable of transmitting axial motion of a feed screw shaft of a feed nut and cutting off transmission of all of position displacement and attitude change not in the axial direction of the feed screw shaft for a moving device which is driven by a feed screw mechanism.SOLUTION: There is provided a moving device which applies feed motion to a moving body through a feed nut moving along the axis of a feed screw shaft through rotation of the feed screw shaft. The feed nut is supported by a linear slide part provided independently of the moving body to freely slide along the axis of the feed screw shaft, a fluid hydrostatic bearing which is substantially perpendicular to a guide surface for the moving body is formed among a front surface and a rear surface of the feed nut and a driven member fixed to the moving body, and the fluid hydrostatic bearing includes pressure reduction means common to a plurality of pockets constituting the same bearing surface. |
