| 摘要 |
A method for manufacturing a ball screw according to the present invention includes a seal fixing step of fixing a ring shaped seal (4) to an attachment portion (24) disposed in an end portion of a nut (2) of a ball screw in an axis direction using a fixing member (5). The attachment portion has an inner circumferential surface having a diameter larger than that of an inner circumferential surface on which a spiral groove of the nut is formed. A through hole (25a to 25c) is formed in the attachment portion, the through hole (25a to 25c) penetrating the attachment portion in a radial direction from an outer circumferential surface thereof to the inner circumferential surface thereof. The seal fixing step includes passing the screw through the through hole and engaging the screw with an outer circumferential portion of the ring shaped seal to exert an outward-directed force in the radial direction on the ring shaped seal because of a force of the head pressing the bearing face to fix the ring shaped seal to the nut. |
