| 摘要 |
PROBLEM TO BE SOLVED: To provide a linear actuator ball spline device.SOLUTION: The linear actuator ball spline device comprises a spline shaft 1, and a movable body. Plural rolling grooves 11 extending in an axial direction are provided on a surface of the spline shaft 1. The movable body includes two rotors 3, and plural rolling bodies 4. A through hole 21 set to the spline shaft 1 is formed on a main doby 2. A rolling tank 211 relative to the rolling grooves is provided on an inner edge surface of the through hole 21. The rolling grooves and the rolling tank constitute one load passage. One mounting hole 22 is provided at each of ends of the through hole . The two rotors 3 ase housed in two mounting holes, and a circulating flow passage corresponding to the rolling tank is provided on the rotor. A profile of the circulating flow passage has a U-shape. Both ends of the circulating flow passage are respectively communicated with the load passage and a circulating flow hole, and constitute one circulating passage. The plural rolling bodies are provided in the circulating passage. |
