Fixture positioning block for rotor machining

The utility model discloses a fixture positioning block for rotor processing, which comprises a base, a fixing block is mounted on the base, a mounting plate is mounted on the fixing block through a height adjusting component, the height adjusting component comprises an internal thread sleeve fixedly connected below the mounting plate, and the internal thread sleeve vertically penetrates into the fixing block. A lifting groove located in the fixing block is formed outside the inner threaded sleeve, threads are arranged on the inner surface of the inner threaded sleeve, a mounting groove is formed below the lifting groove in a connected mode, a threaded rod is spirally sleeved with the inner threaded sleeve, the bottom end of the threaded rod extends downwards into the mounting groove and is connected with a bearing of the mounting groove, and the lower end of the threaded rod is sleeved with a transmission assembly. The transmission assembly comprises a second bevel gear arranged outside the lower end of the