Machining clamp for mechanical pump cylinder body

The utility model relates to the technical field of mechanical pump machining, and discloses a mechanical pump cylinder body machining clamp which comprises a fixing plate, a plurality of through holes are formed in the fixing plate, a frame body is fixedly connected to the top of the fixing plate, a clamping assembly is arranged on the frame body, and the clamping assembly comprises threaded rods on the two sides. The tail ends of the threaded rods on the two sides are rotationally connected with arc-shaped plates, mounting holes are symmetrically formed in the top of the frame body, vertical rods are in threaded connection with the interiors of the mounting holes in the two sides, the vertical rods on the two sides are movably sleeved with movable bases, the bottoms of the movable bases on the two sides are provided with limiting plates, and one sides of the tops of the limiting plates on the two sides are fixedly connected with movable rods; a nut is mounted on the movable rod; by designing the clamping as