| 摘要 |
PURPOSE: A ball screw device is provided to minimize installation space by correcting the center of gravity using a screw shaft and a screw-nut. CONSTITUTION: A screw shaft peripheral groove is formed on a screw shaft. A screw-nut inner circumference groove is formed on a screw-nut(200). A plurality of balls is formed between the screw shaft peripheral groove and the screw-nut inner circumference groove. A rotating unit(500) offers torque to the screw-shaft. A fluid inflow unit acquires fluid inside a hollowed cylinder pipe or discharges the fluid to outside when straight line movement of a screw-nut is generated by the torque. The fluid inflow unit comprises a fluid storing unit and a piston assembly. [Reference numerals] (AA, BB) Driving |
