In the process of mechanical processing, the common methods of sheet metal cutting are manual cutting, semi-automatic cutting machine cutting and CNC cutting machine cutting. Manual cutting is flexible and convenient, but the quality of manual cutting is poor, the size error is large, the material waste is large, and the subsequent processing workload is large. At the same time, the labor conditions are poor and the production efficiency is low. The profile cutting machine in semi-automatic cutting machine has good quality for cutting workpieces. Because it uses cutting dies, it is not suitable for cutting single pieces, small batches and large workpieces. Although other types of semi-automatic cutting machines reduce the labor intensity of workers, their functions are simple, and they are only suitable for cutting parts with more regular shapes. Compared with manual and semi-automatic cutting methods, CNC cutting can effectively improve the efficiency and quality of sheet metal cutting, and reduce the labor intensity of operators. Some small and medium-sized enterprises in our country even use manual cutting and semi-automatic cutting in some large enterprises.
The use of steel in China's machinery industry has reached more than 300 million tons, and the amount of steel cutting is very large; with the development of the modern machinery industry, the work efficiency and product quality requirements for sheet metal cutting have also increased. Therefore, the market potential of CNC cutting machine is still very large, and the market prospect is relatively optimistic.
Status Quo
After decades of development, CNC cutting machines have made great progress in cutting energy and CNC control systems. Cutting energy has developed from a single flame energy cutting to multiple energy sources (flame, plasma, laser, high-pressure water) (Jet) cutting method; CNC cutting machine control system has developed from the original simple functions, complex programming and input methods, and low automation to a fully functional, intelligent, graphical, and networked control method; the drive system has also changed from Step drive, analog servo drive to today's all-digital servo drive;
The main varieties of CNC cutting machines include the following:
CNC flame cutting machine
CNC plasma cutting machine
CNC laser cutting machine
CNC high pressure water jet cutting machine
Other special special cutting equipment (such as CNC pipe cutting machine, CNC profile cutting machine, other non-metal special cutting equipment, etc.)
The characteristics and application of various types of CNC cutting machines
CNC flame cutting machine, with large thickness carbon steel cutting ability, low cutting cost, but there are large cutting deformation, low cutting accuracy, and low cutting speed, cutting warm-up time, long perforation time, it is difficult to adapt to full automation The need for operation. Its application is mainly limited to carbon steel and large-thickness plate cutting, and it will gradually be replaced by plasma cutting in medium and thin carbon steel plate cutting.
CNC plasma cutting machine, plasma cutting has a wide cutting field, can cut all metal plates, cutting speed, high efficiency, cutting speed can reach more than 10m / min. Plasma cutting under water can eliminate the noise, dust, harmful gas and arc pollution generated during cutting, and effectively improve the environment in the workplace. The use of fine plasma cutting has made the cutting quality close to the level of laser cutting. With the maturity of high-power plasma cutting technology, the cutting thickness has exceeded 100mm, which broadens the cutting range of CNC plasma cutting machines.
The CNC laser cutting machine has the characteristics of fast cutting speed and high precision. The laser cutting machine is expensive and the cutting cost is high. It is only suitable for thin plate cutting and high precision requirements.
The CNC high-pressure water jet cutting machine is suitable for cutting any material (metal, non-metal, composite materials), with high cutting accuracy, no thermal deformation, and an environmentally friendly cutting method. Its disadvantages are slow cutting speed, low efficiency and high cutting cost.
Other CNC cutting machines: including CNC pipe cutting machine, CNC section steel cutting machine, CNC groove cutting machine, CNC woodworking cutting machine, these special cutting equipment are mainly used for CNC cutting of various special profiles, there are not many manufacturers on the market.
