The invention relates to an ultra-low temperature
ball valve seat
machining device. The ultra-low temperature
ball valve seat
machining device comprises a bottom plate, a cylinder, a lifting table, aplacing frame, a rotating motor, a
locking mechanism, a
moving frame and a moving mechanism. The lifting table is installed at the top of the bottom plate through the cylinder, a ring chute is formedin the middle part of the lifting table, and the lower end of the placing frame is connected with the ring chute in a sliding fit mode. The lower end of the placing frame is of a
hollow cylinder structure with an opening, an output shaft of the rotating motor is connected with the middle and lower side wall of the placing frame, the
locking mechanism is installed on the placing frame, the lower end of the
moving frame is connected with the top of the bottom plate, and the moving mechanism is installed on the
moving frame. The ultra-low temperature
ball valve seat
machining device can solve theexisting problems that when an existing ball
valve seat is
cut and machined, no locking fixture is provided for a
valve seat structure during
cutting and locking of a ball
valve seat, a certain deviation exists between the center position of the ball valve seat after locking and the center position of a rotating shaft, so that the
cutting accuracy of the valve seat is poor.