Automobile engine thermoregulator base machining fixture

An automobile engine thermoregulator base machining fixture comprises a rotating frame. Two to six frame plates which are connected through four connecting rods parallel to the axis of the rotating frame and are perpendicular to the axis of the rotating frame are arranged on the rotating frame. A shaft at one end of the rotating frame serves as an input end, and a shaft at the other end of the rotating frame is connected with an installation frame. A fixture station is arranged on one frame plate of every two adjacent frame plates and provided with two positioning platforms on the frame plate, an elastic hook is arranged at the portion, between the two corresponding positioning platforms, of each frame plate, the two sides of each positioning platform are each provided with a pneumatic pressing device which is provided with a front cylinder and a rear cylinder, the axes of each front cylinder and the corresponding rear cylinder are perpendicular to the corresponding frame plate, cylinder stands are arranged beside each front cylinder and the corresponding rear cylinder respectively, and the four connecting rods are hinged between piston rods of the cylinders and the cylinder stands. A plurality of circumferential connecting holes irregular in shape and different in machining-required axis direction and automobile engine thermoregulator base die-casting blanks of the connecting faces of the connecting holes are clamped on a working table of a machining center, and cutting is conveniently conducted through the machining center.