Center-adjustable machine bench clamp

The utility model relate to a machine bench clamp, in particular to a center-adjustable machine bench clamp for clamping a workpiece on a metal cutting and milling machine. The center-adjustable machine bench clamp comprises a base, a rotating seat, a clamp body, a movable jaw and a clamping screw, wherein the movable jaw is installed on the clamp body through the clamping screw, and the clamp body is installed on the rotation seat in a sliding mode through a center adjusting screw. According to the center-adjustable machine bench clamp, the center of the clamp body can be adjusted, the defect that the rotation center of the workpiece cannot by adjusted by a traditional machine bench clamp is overcome, and the center-adjustable machine bench clamp is simple in structure, fast in operation, wide in machining range and high in production efficiency.