The invention relates to a universal valve body
machining fixture. The universal valve body
machining fixture comprises a
workbench and locating pins, sliding grooves are distributed all around the
workbench, and pressing plates and hinged seats are installed in the sliding grooves in a sliding mode; a plane four-bar mechanism is connected between the pressing plates and the hinged seats, a long connecting bar is hinged to the lower end of the left-most pressing plate, the left portion of the long connecting bar is provided with a control rack, the front end of the control rack is provided with a circular groove, a screw is installed in the circular groove in a threaded mode, and an adapting wheel is rotatably installed in the circular groove and hinged to the long connecting rod at any
peripheral edge end; an annular groove is formed in the center position of the adapting wheel, the circular arc end of the adapting wheel is provided with a clamping groove, an annular
insertion block is fixedly installed on the screw, the front end of the circular groove is communicated with a square groove, an
insertion pin is installed in the square groove in a sliding mode, and the center position of the control rack is connected with a supporting rack. According to the universal valve body
machining fixture, by means of the connecting mode of the adapting wheel and the control rack, horizontal sliding distance of two pressing plates can be controlled, the effect of clamping valve bodies with different sizes and types can be achieved, and the application range is wide.