| 摘要 |
PROBLEM TO BE SOLVED: To provide a means which can facilitate the processing of a ball screw device having a reduced nut outer diameter reduced in size and can circulate a ball better. SOLUTION: A ball screw device having a screw axis whose outer peripheral face has a helical axis rolling screw formed thereon and a nut whose inner peripheral face has a nut rolling groove opposite to the axis rolling groove formed thereon wherein the axis rolling groove and the nut rolling groove are screwed to each other via a plurality of balls. The ball screw device is provided with a connection groove which connects a groove gap between the adjacent axis rolling grooves to circulate the balls, and a pair of guiding bodies in connection parts between the respective axis rolling grooves. The one guiding body is disposed forward in the ball circulating direction of the one axis rolling groove to lead the balls to the connection groove and the other guiding body is disposed to lead the balls having passed through the connection groove to the other axis rolling groove. COPYRIGHT: (C)2005,JPO&NCIPI |
