| 摘要 |
PURPOSE:To get rid of backlash and improve an oil absorbing property by forming the tooth of a nut holder engaged with a male screw with graphite and providing a pair of wedges for adjusting the position of the tooth in the direction of a shaft center. CONSTITUTION:A mall screw 1 land a tooth 3 which is engaged with the ridge 2 of the male screw 1 are interposedly held by a pair of wedges 4, 4' which are provided in the direction of the shaft center of the male screw 1, and the wedges 4, 4' are movable in the radial direction of the male screw 1 to support them. The tapers of the wedges 4, 4' are slidingly brought into contact with the tapers of taper holes 6, 6' provided on a nut holder 5, and the wedges 4, 4' an engaged with screws 7, 7' respectively. The tooth 3 is adjusted in its position in the shaft center direction of the male screw 1 and fixed in the position. The tooth 3 is formed with graphite. Thereby, the captioned device has a friction coefficient of approx. 0.08-0.1, having a high oil absorbing property while without having backlash. |
