6 basic knowledge of laser cutting machine
In metal processing, fiber laser cutting machine, with its advantages of high efficiency and high quality, gradually replaces the traditional process and becomes a weapon in the metal processing industry.
But even if they are also called fiber laser cutting machines. The processing efficiency and effects of different equipments inside will vary greatly. For fiber laser cutting machines, the six core accessories must be pay more attention when purchasing.
Laser is the most important “power source” of laser equipment, just like car engine, it is also the most expensive part of fiber laser cutting machine. At present, imported brands of fiber lasers on the market include German IPG, ROFIN, British SPI, USA coherent, etc. With the development of technology, domestic laser brands such as Raycus have also emerged. They are gradually recognized by the market with high cost performance.
For a long time, our country’s lasers have basically relied on imports, which are expensive and have a long supply cycle, resulting in high prices for high-power fiber laser cutting machines. The emergence of the Chinese fiber laser manufacturer’s blooming situation has broken the monopoly of foreign companies in the laser field and directly lowered the price of imported products.
The cutting head is a laser output device of a fiber laser cutting machine. It include a nozzle, a focusing lens and a focusing tracking system. The cutting head of the laser cutting machine will work according to the set cutting trajectory, but under different materials, different thicknesses and different cutting methods, the height of the laser cutting head needs to be adjusted and controlled.
The control system is the leading operating system of the fiber laser cutting machine. And mainly to control the machine tool, realize the X, Y, Z axis movement, and also control the output power of the laser. Its quality determines the stability of the operation performance of the fiber laser cutting machine. Through the precise control of the software, it can effectively improve the accuracy and cutting effect. Currently commonly used Beckhoff CNC system, PA CNC system, Farianka system, etc.
The motor of the laser cutting machine is the core component of the motion system. The performance of motor directly affects the processing effect and production efficiency of the product. At present, the commonly used motors include stepper motors and servo motors. According to the industry type and product type of the processing object, equip the most suitable motor
Stepper motor: fast starting speed and responsiveness, suitable for engraving and less demanding cutting. The price is lower. There are many brands of stepper motors with different performances.
Servo motor: fast motion, smooth motion, high load, stable performance; smooth edges of processed products, fast cutting speed; high price, suitable for industries and products with high processing requirements.
The fiber laser cutting machine has very high requirements on the stability of the machine tool. High precision and high stability machine tools are conducive to improving the accuracy of laser cutting. At present, the mainstream machine tools on the market are gantry type, cantilever type, beam type, etc. Different machine tools have different functions. For example, beam type machine tools are mainly used for material cutting by large manufacturers. They are also used for specific fields, such as 3D fiber laser cutting. Mainly used in the automotive industry.
Laser lenses are the most used in the entire fiber laser cutting equipment. Many optical devices contain laser lenses. Different lenses have different functions, including full-reflective lenses, semi-reflective lenses, focusing lenses, and so on.
The quality of the lens directly affects the output power of the laser. It also affects the performance of the whole machine. The lenses include domestic and imported. The life span and cutting effect of domestic lenses are not as good as imported lenses, but the price is far cheaper than imported lenses.