Machining positioning device

The utility model discloses a machining positioning device which comprises a machining table, a rotating disc, a positioning device and a positioning device. The center of the top of the machining table is provided with a rotating disc with a rack on the side wall. A servo motor is installed on one side of the bottom of the machining table, the output end of the servo motor penetrates through the bottom of the machining table and is connected with a gear meshed with a rack of the rotary table, two mounting plates are connected to the top of the rotary table in parallel, sliding grooves are formed in the middles of the mounting plates, and sliding blocks are slidably connected to the tops of the sliding grooves; positioning plates are arranged on the opposite sides of the two sliding blocks, an electric push rod is installed at the bottom of the sliding groove in one side, the output end of the electric push rod is connected to the bottom of the corresponding sliding block, a threaded rod is in threaded connec