The sheet metal processing stamping of CNC punching machine is an important part of sheet metal processing, and the CNC punching machine can replace the processing capacity of the past three punching machines. Greatly increased productivity. The CNC punch press is a versatile machine tool with a single punch and a turret. CNC turret punch press (NCT) is a combination of machine, electricity, liquid and gas. It is a pressure processing equipment for punching and shallow drawing on sheet metal. First, the processing method of CNC punching machine 1. Single punch: complete punching in a single time, including circumferential distribution, arc distribution, straight line distribution, and distribution of grid holes. 2. Continuous punching in multiple directions: the processing method of machining large holes with small molds. 3, single molding: according to the shape of the mold a shallow deep drawing processing. 4. Continuous punching in the same direction: It is possible to process trimmed edges, long holes, etc. by using a partial processing method in which rectangular molds are partially overlapped. 5, encroachment: the use of small round mold to carry out the continuous arc-shaped arc processing method with a small step. 6, array forming: processing multiple different or the same workpiece processing method on the large board. 7. Continuous forming: forming processing methods with larger mold size, such as rolling steps, rolling bars, large-size blinds and other processing methods. Second, the characteristics of CNC punching process 1, easy to use. Saving the cost of mold opening, CNC turret punch press (NCT) is a pressure processing equipment integrating machine, electricity, liquid and gas. It is used for processing all kinds of thin metal parts. It can process a variety of complex holes on the board. Deep drawing processing allows automatic machining of parts at one time. CNC turret punch presses are the most vital of the pressure processing equipment. The CNC punching machine not only can automatically process different shapes of holes of different sizes and pitches as required, but also can use large punches to punch large circular holes, square holes, waist holes and curved contours of various shapes. Special processing, such as blinds, shallow stretching, counterbore, flanging holes, ribs, embossing, etc. Compared with traditional stamping, CNC punching machine saves a lot of mold cost, can use low cost and short cycle processing small batch, diversified products, has a large processing range and processing capacity, so as to adapt to market and product demand in time. Variety. 2. High processing precision and stable processing quality CNC punching machine has high punching precision, small punching burr, good flatness of workpiece, less processing volume, low scrap rate, high forming quality, and the processing precision of digital punching is generally up to 0.1mm, the product has good dimensional consistency. 3. The machine tool can process the workpiece separately or use the group command to batch process the workpiece to improve productivity. CNC punching machine processing speed is fast, the general hydraulic equipment stroke rate can reach 500 ~ 600 times min, and some even up to 900 times min, the maximum positioning speed can reach more than 100mmin. For large-size sheets, it can be completed in one process, unlike traditional processing, which requires multiple processes and is processed on many different equipment. 4. When the machining parts are changed, generally only the NC program needs to be changed, which can save production preparation time. 5. The quality of the operators is high, and the technical requirements for maintenance personnel are higher. Third, the development trend of CNC punching technology The application of numerical control technology not only brought revolutionary changes to the traditional manufacturing industry, but also made the manufacturing industry a symbol of industrialization. At present, the development trend of numerical control technology and equipment in the world mainly has the following aspects. 1. New trends in high-speed, high-precision machining technology and equipment Efficiency and quality are the mainstays of advanced manufacturing technology. 2, 5-axis linkage machining and composite machining machine tools are developing rapidly. 3. Intelligent, open, and networked have become the main trends in the development of contemporary CNC systems. 4. Pay attention to the establishment of new technical standards and norms.