Machining center clamp

The utility model discloses a machining center clamp. The fixture comprises a base, a connecting seat, a pull rod, a clamping cylinder and a fixture body, the locking device is characterized in that four locking grooves are formed in the connecting seat; a connecting hole for the pull rod to penetrate through is formed in the middle of the bottom surface of the locking groove; two sets of lockingdevices distributed on the two sides of the connecting hole are arranged in each locking groove. The locking device comprises a locking gear and a fixing frame; the locking gear is rotationally arranged between the two side walls of the locking groove; convex teeth meshed with the locking gear are arranged in the middle of the pull rod; a fixing frame fixed to the bottom face of the locking grooveis rotationally connected with a locking rod. The end, deviating from the fixing frame, of the locking rod is connected with a locking block engaged with the locking gear, a reset spring is arrangedbetween the locking rod and