| 摘要 |
PURPOSE: To enlarge speed change range and reduce the weight in a rotation driving device for use in horizontal honing machines, etc. CONSTITUTION: The rotation driving device is composed of hydraulic motors 2A to 2D, change-over valves 3A to 3D, one way clutches 4A to 4D, a transmission mechanism 5, and is provided with one way clutches 4A to 4D for transmitting power only in one direction. A main spindle 53 is structured to be rotated by the arbitrary number of the plural hydraulic motors. |
