Fiber laser plane automotive sheet metal cutting

Laser cutting advantages relative to conventional cutting: the traditional cutting process means flame cutting, plasma cutting, waterjet cutting and wire cutting and punching processing, etc., laser cutting as a new means of technology in recent years, is the high energy density of the laser beam to the workpiece to be machined, the local heat to melt, and then use high-pressure gas blown off the slag forming slits, laser cutting has the following advantages. 1. slotted narrow, high precision, slotting roughness is good, no re-treatment after cutting the following process. 2. The laser processing system itself is a computer system, you can easily arrange, modify, for personalized processing, especially for some complex contour shape sheet metal parts, lots more small quantities, product life cycle is not long, From a technical and economic point of view to measure the costs and time, manufacturing mold worthwhile, laser cutting particularly attractive. 3. The energy density of the laser machining large, short duration, small heat-affected zone, heat distortion small, thermal stress, coupled with a non-mechanical contact laser machining the workpiece without mechanical stress, suitable for precision machining. The high energy density of the laser light is sufficient to melt any metals, particularly suitable for a number of material processing high hardness, high brittleness, high melting point means the other process difficult to process. 5. The processing costs. One-time investment in equipment is more expensive, but continuous, a large number of machining ultimately reduce processing costs per part down. 6. The non-contact laser processing, inertia, processing speed, software programming with the NC system CAD / CAM, the time-saving convenience, high overall efficiency. 7. The high degree of automation of the laser can be fully enclosed processing, pollution, noise, greatly improved the operator's working environment. Fiber laser cutting laser cutting with respect to the early advantage: Early laser cutting CO2 lasers have adopted, there xenon lamp-pumped YAG laser, the company's laser cutting system uses the most advanced third-generation laser - fiber lasers , has the following advantages: 1. laser through an optical fiber transmission to the focusing head, flexible way to connect easily and automated production line supporting work. 2. Fiber ideal beam quality, greatly improving the cutting quality and efficiency. Diode-pumped high stability and long life 3. The fiber laser, the decision need not like the traditional lamp-pumped laser that need to be adjusted to suit the current xenon lamp aging problem, greatly improving the stability and consistent production of products sex. The fiber laser photoelectric conversion efficiency greater than 25%, the system power consumption, small size, small footprint. 5. Compact structure, the system is highly integrated, less failure, easy to use, no optical adjustment, low maintenance or zero maintenance, truly a "landing light", with shock and vibration, anti-dust, really suitable for industrial processing sector The application is currently up and down one million low-cost laser cutting machine, laser basically 1-2KW optional fast axial flow CO2 laser, need to be fully He, Ne, CO2 and other gases, and maintenance costs at 20 yuan / hour, the system is consuming about 30KW (main power components of the laser power supply, cooling system and bed), plus inflatable fees, lenses and consumables such as cutting nozzle, the cumulative hour of use cost of nearly hundred dollars. Contained cooling system comprising an aerated, including the area up to several hundred square meters. Also a low-cost laser cutting machine, YAG laser optional bi-xenon lamp-pumped laser is a 500W, hundreds of hours every two xenon lamp needs to be replaced, at a total cost of 3 yuan / hour, the system consumption electrical 30KW about (the main power components for the laser power supply, cooling system and bed), plus the cost of blowing, lenses and cutting nozzle and other consumables, using the cumulative cost of 60 yuan per hour. Contained cooling system comprising an aerated area, including the fast axial flow CO2 laser cutting than smaller systems. But the biggest problem of this system is that short life of a xenon lamp, the need to constantly adjust the current to suit a xenon lamp aging problem, and second, the need frequent replacement xenon lamp re-adjust the optical path, three more complex hard optical system requires frequent commissioning and maintenance in order to ensure suitable for cutting the excellent optical quality. All these factors greatly affect the stability and consistency of the industrial production of the product. Our company based on pre lot of market research, combined with the characteristics of the sheet metal industry, is launching a large-format platform + combination of fiber laser cutting, thorough and effective solution to the above problems, the main design philosophy as follows. First, instead of using fiber lasers CO2 laser and lamp-pumped lasers. Fiber laser technology is the rapid development of laser technology in recent years, and compared to traditional laser with better cut quality, lower system cost, longer life and lower maintenance costs, lower power consumption. And fiber laser can be transmitted through the fiber laser for easy connection to the motion platform, to achieve flexible processing, greatly simplifying the system design of traditional laser cutting machine, but also improve the stability of the system, reducing the amount of maintenance really suitable for industrial processing applications. Secondly, based on the characteristics of the sheet metal industry, the vast majority of the thickness of the sheet workpiece within 2MM, matching the two to three hundred watt fiber laser cutting sheet steel at speeds up to 5-6 meters per minute, already with 2000W The actual processing speed of CO2 laser cutting system fairly, and the cost of the laser system is greatly reduced. In bed precision, taking into account the most precision sheet metal parts, the general design of the positioning accuracy of about 100uM, but also greatly reduce the construction costs of the bed. Of course, the user depending on the workpiece material and material thickness, and accuracy requirements, also can be equipped with our higher power level higher positioning accuracy of the series. Third, the use of our own research and development cutting sheet metal industry-specific software, powerful, easy to use. Fourth, the only flaw in this system is the only machining of metal parts, non-metallic workpieces can not be processed. This is because the system uses a fiber laser, whose wavelength is 1064NM, with respect to the CO2 laser wavelength 10640NM not easily absorbed because of nonmetal parts.