| 摘要 |
PROBLEM TO BE SOLVED: To provide a device, capable of branching and transmitting rotation of an axially moving motor to a second drive shaft not moving in an axial direction, stably with a power loss decreased. SOLUTION: A pulley 25 is mounted on a second drive shaft 14A by utilizing ball spline and a bearing 27 rotatably holding the pulley 25 is securely held at a moving table 6A to hold a motor 7. A belt 19 is run around a pulley 28 held on a first drive shaft 9 driven by the pulley 25 and the motor 7 to branch and transmit rotation. When the motor 7 and the first drive shaft 9 are axially moved, the pulley 25 held on the second shaft 14A is moved together, and transmission of rotation to be always stable and reduce incurring of a power loss is practicable. |
