Transmission unit of disk type multistation double revolving numerical control shaft

The utility model discloses a transmission unit of a disk type multistation double revolving numerical control shaft and a double revolving numerical control shaft is arranged on each station. The transmission unit is characterized by being divided into an execution subunit and a driving subunit, wherein the execution subunit is arranged on a revolving disk, the driving subunit is arranged on a fixed chassis, the two subunits are linked through an arc end surface key to realize the motion transmission of the two revolving numerical control shafts, and a circle of guide keys are embedded in the fixed chassis to ensure that the double revolving numerical control shaft of the execution subunit of each station can maintain a correct gesture when the disk revolves. By adopting the transmission unit, each station has the double revolving numerical control shaft and a processing program can be programed for each station; as a servo motor does not revolve with the disk, an electric-conducting slip ring is not required, the transmission of power and control signals can be simplified and the reliability is very high. The rising and falling movements of the revolving disk are not required during the change of the stations, the mechanical structure is simplified and the reliability is greatly increased. Therefore, the transmission unit disclosed by the utility model has very high economic value and practical value.