| 摘要 |
PURPOSE:To obtain simple construction by differentiating a radius of a contact portion of a ball groove and a ball of one side to a rotating axis of the ball with that of a ball groove and a ball of the other side. CONSTITUTION:Balls 2 of a linear moving device are contacted to a contact portion 6 of a ball groove 4 of a guide member 1, and contacted to a contact portion 7 of a ball groove 5 of a moving member 4 to enable both the members move through balls. And a radius R1 to a rotating axis X-X of the contact portion 6 of balls on the guide member side is made larger than that R2 to a rotating axis of the contact portion 7 of balls on the moving member side. Then, even if a space where balls move to the moving member is made less, relatively large movement of the moving member to the guide member can be obtained in a simple construction device. |
