CNC cutting machine application and development I. Overview In the machining process, the plate cutting commonly used manual cutting, semi-automatic cutting machine cutting and CNC cutting machine cutting. The manual cutting is flexible and convenient, but the manual cutting quality is poor, the dimensional error is large, the material waste is large, the follow-up processing workload is large, and the labor conditions are harsh, and the production efficiency is low. The contour cutting machine in the semi-automatic cutting machine has good quality for cutting workpieces. Because of its use of cutting dies, it is not suitable for cutting single pieces, small batches and large pieces. Although other types of semi-automatic cutting machines reduce the labor intensity of workers, their functions are simple, and they are only suitable for the cutting of some parts with a relatively regular shape.
Compared with the manual and semi-automatic cutting methods, the numerical control cutting can effectively improve the efficiency and cutting quality of the plate cutting and reduce the labor intensity of the operator. At present, some small and medium-sized enterprises in China even use manual cutting and semi-automatic cutting methods in some large enterprises are still relatively common. At present, the use of steel in China's machinery industry has reached more than 300 million tons, the amount of steel cutting is very large; with the development of modern machinery industry, the work efficiency and product quality requirements of sheet metal cutting and processing are also increased. Therefore, the market potential of CNC cutting machine is still very large, and the market prospects are more optimistic. Second, the status of CNC cutting machine 1, after several decades of development, CNC cutting machine in cutting energy and CNC control system has made considerable progress in the development of cutting energy has been a single flame energy cutting development for the current variety of energy ( Flame, plasma, laser, high-pressure water jet) cutting method; CNC cutting machine control system has been developed from the original simple functions, complex programming and input methods, the degree of automation is not high to have a full-featured, intelligent, graphical, networked Control method; Drive system is also from the stepper drive, analog servo drive to today's all-digital servo drive; CNC cutting machine main varieties include the following: CNC flame cutting machine CNC plasma cutting machine CNC laser cutting machine CNC high pressure water jet Cutting other special special cutting equipment (such as CNC pipe cutting machine, CNC profile cutting machine, other non-metal special cutting equipment, etc.) 2. Characteristics and application of various types of CNC cutting machine CNC flame cutting machine, cutting with a large thickness of carbon Steel cutting ability, cutting cost is low, but there is cutting deformation Cutting accuracy is not high, and low cutting speed, preheating time of cutting, perforating a long time, difficult to adapt to the needs of fully automated operation. Its application is mainly limited to carbon steel, large thickness plate cutting, in the middle, thin carbon steel plate cutting will be replaced by plasma cutting. CNC plasma cutting machine, plasma cutting has a wide cutting area, can cut all metal plates, cutting speed, high efficiency, cutting speed up to 10m/min or more. Plasma cutting under water can eliminate the noise generated during cutting, dust, harmful gas and arc pollution, and effectively improve the workplace environment. The use of fine plasma cutting has made the cutting quality close to the level of laser cutting. Currently, with the maturity of high-power plasma cutting technology, the cutting thickness has exceeded 100 mm, which broadens the cutting range of CNC plasma cutting machines. CNC laser cutting machine has the advantages of high cutting speed and high precision. Laser cutting machine is expensive and cutting cost is high. Currently, it is only suitable for occasions where thin plate cutting and high precision are required. CNC high pressure water jet cutting machine is suitable for cutting any material. (Metal, non-metal, composite materials), high cutting accuracy, no thermal deformation, and environmentally friendly cutting methods. Its disadvantages are slow cutting speed, low efficiency and high cutting costs. Other CNC cutting machine: including CNC pipe cutting machine, CNC steel cutting machine, CNC groove cutting machine, CNC wood cutting machine, these special cutting equipment is mainly used in a variety of special profiles to CNC cutting, the current market, there are not many manufacturers. Third, the development trend of CNC cutting machine With the development of modern mechanical processing industry, the continuous improvement of the quality and precision of cutting, the requirements for improving production efficiency, reducing production costs, and having high intelligent automatic cutting function are also increasing. The development of CNC cutting machines must adapt to the requirements of the development of modern machinery processing industry. 1, the development of CNC cutting machine. From the current situation of several general-purpose CNC cutting machines, the function and performance of the CNC flame cutting machine have been relatively complete. The limitations of the material cutting (only cutting carbon steel plate), the cutting speed is slow, the production efficiency is low, and its scope of application is gradually In shrinking, there can be no major increase in the market. Plasma cutting machine has a wide range of cutting (can cut all metal materials), cutting speed, high efficiency, the future direction of development lies in the plasma power technology, CNC system and plasma cutting problems, such as the power of the power can be cut Thicker plates; the refinement and improvement of fine plasma technology can improve the cutting speed, cutting surface quality and cutting accuracy; the perfection and improvement of CNC system to adapt to plasma cutting can effectively improve work efficiency and cutting quality. Laser cutting machine has the advantages of high cutting speed, precision and cutting quality. Laser cutting technology has always been a high technology that the country mainly supports and promotes. In particular, the government emphasizes that it is necessary to revitalize the manufacturing industry, which brings development opportunities for the application of laser cutting technology. In the formulation of the medium and long-term development plan, the government has also listed laser cutting as a key supporting technology because it involves national security, national defense construction, industrialization of high and new technology, and development of advanced science and technology, which has brought laser cutting to a very high level. The degree of emphasis will also bring great business opportunities to the manufacturing and upgrading of laser cutting machines. In previous years, most of the domestic laser cutting machines were imported products, and the domestic products accounted for a very small share. With the gradual deep understanding and exemplary adoption of laser cutting technology, the company has driven domestic companies to develop and produce laser cutting machines. 2, the development of special CNC cutting machine. The CNC pipe cutting machine is suitable for cutting the normal, oblique and eccentric cross-phase holes, square holes and elliptical holes on various pipes, and can cut the intersecting line at the end of the pipe. This type of equipment is widely used in the production of metal structural parts, power equipment, boiler industry, petroleum, chemical and other industrial sectors. CNC groove cutting machine is one of the relatively high-end products in the line. The rotary groove cutting function of this type of equipment can meet different requirements of different angles of groove opening in the welding process. With the development of China's shipbuilding industry, the shipyard has taken the lead in the introduction and use of CNC plasma cutting machines. With the development of technology, domestic and foreign shipyards are now equipped with CNC plasma cutting machines with a rotary groove cutting function to meet the requirements for the construction of high-tech and high-value-added ships.
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