Positioning and punching device for machining

The utility model relates to the technical field of machining, and discloses a positioning and punching device for machining. The fixing block is fastened to the left side of the top of the base, the placing block is slidably connected to the top of the base, the two hydraulic cylinders are arranged at the top of the base, the output ends of the hydraulic cylinders are in key connection with the placing block, the rotating motor is arranged on the right side of the placing block, the drill rod is in key connection with the output end of the rotating motor, and two balance grooves are formed in the right side of the fixing block. According to the positioning and punching device for machining, through cooperation between an ejection block and a pulley, when the ejection block ejects a movable pulley, clamping plates can be driven by a moving block to move, so that the positions of the two clamping plates can be conveniently changed, the distance between the two clamping plates is adjusted, and the device can cl