Auxiliary hardware CNC machining device

The utility model discloses an auxiliary hardware CNC machining device. The auxiliary hardware CNC machining device is characterized by comprising a fixed base which can be fixed on a CNC, a plurality of struts are arranged on the fixed base, a top plate is arranged on the tops of the struts, an exchanging plate capable of containing parts to be machined is arranged on the top plate, the exchanging plate is provided with a plurality of second air cylinders, product wedge blocks and a product fixing support for fixing the parts to be machined, and the second air cylinders are connected with the product wedge blocks which are connected with the product fixing support. Preferably, the exchanging plate is further provided with exchanging plate positioning holes, the top plate is provided with first air cylinder positioning holes for fixing first air cylinders, the first air cylinders are connected with ejector rods of the first air cylinders, and the exchanging plate is fixed by the ejector rods of the first air