Optical fiber laser cutting machine used in sheet metal processing industry advantage

Traditional cutting technology to a flame cutting, plasma cutting, water knife cutting and the cutting and punching processing, etc., the optical fiber laser cutting machine as a means of emerging technology in recent years, is a high energy density of laser beam to stay machining workpieces, make the local hot melt, then using high-pressure gas blowing to slag forming and cutting seam, laser cutting machine has the following advantages.

1. The narrow slot, high precision, good slotted roughness, after cutting without process after reprocessing.

2. The laser processing system itself is a set of computer system, can the convenient arrangement, modifying, suitable for processing, especially for some contour shape complex sheet metal pieces, not more batch quantities, short product life cycle, from technology, economic cost and time to measure Angle, uneconomic of mold manufacturing, laser cutting particular advantage.

3. The energy density of laser machining is very big, time is short, small heat affected zone, small thermal deformation, thermal stress is small, with a laser is a mechanical contact process, the workpiece is not mechanical stress effect, suitable for precision machining.

4. The laser of high energy density is enough to melt any metal, particularly suitable for processing some high hardness, high brittleness, high melting point of the other process methods are difficult to machining materials.

5. Low processing cost. Equipment of one-time investment is more expensive, but a continuous, a large number of processing eventually make each parts processing cost is reduced.

6. For non-contact laser processing, inertia small, processing speed, cooperate with the numerical control system of CAD/CAM software programming, time saving, convenient and high overall efficiency.

7. The laser's high degree of automation, can fully enclosed processing, no pollution, low noise, greatly improved the working conditions of operators.

Optical fiber laser cutting early relative to the advantages of laser cutting:

1. By optical fiber transmission to the laser head, flexible connection way easier to implement and production lines supporting automation work.

2. The ideal fiber beam quality, greatly improves the cutting quality and work efficiency.

3. The high stability of the fiber laser and long pumped diode life, determines the need not like the traditional lamp pumped laser to adapt to the need to adjust the current xenon lamp aging, greatly improves the production stability and consistency of product.

4. The fiber laser photoelectric conversion efficiency higher than 25%, small system power consumption, small volume, covers an area of less.

5. Compact structure, high system integration, have few breakdowns and easy to use, do not need to optical adjustment, low maintenance and even zero maintenance, truly "be born out of light", and shock vibration, resistance to dust, and is suitable for real application in the field of industrial processes.

At present in the low price of the laser cutting machine, equipped with laser basically all is 1 to 2 kw fast axial flow CO2 laser, need He, Ne, CO2 gas, such as maintenance costs at 20 yuan/hour, the system power consumption at about 30 kw (the main components for the laser power supply, power consumption of cooling system and lathe bed), plus blowing, the lens and the cutting nozzle consumable, the use of cost nearly one hundred yuan per hour. Include cooling system including inflatable covers an area of up to tens of square meters.

Also a kind of low price of sheet metal laser cutting machine, equipped with 500 w laser are double xenon lamp pumped YAG laser, every need hundreds of hours to replace the two xenon lamp, total expenses in 3 yuan/hour, the system power consumption at about 30 kw (the main components for the laser power supply, power consumption of cooling system and lathe bed), plus blowing, the lens and the cutting nozzle consumable, the cumulative use costs 60 yuan per hour. Include cooling system including inflatable area than fast axial flow CO2 laser cutting system is a bit small.

But the problem is that the system of a xenon lamp shorter service life, to adapt to the need to constantly adjust current xenon lamp aging problem, often need to change two xenon lamp to adjust the light path, three more complex hard light path system requires constant debugging and maintenance to ensure the excellent optical quality is suitable for cutting. All of these factors, which greatly influenced the industrialized production of stability and consistency of product.

At present, the industry generally combining with the characteristics of sheet metal industry launched large platform + combination of fiber laser cutting, thorough and effective to solve the above problems, the main design concept is as follows. First of all, instead of the CO2 laser with fiber laser and light pumped laser. Optical fiber laser technology is the rapid development of laser technology in recent years, compared with traditional laser, has better cutting quality, lower system cost, longer service life and lower maintenance cost, lower power consumption. Laser and fiber laser can be through the optical fiber transmission, convenient connection with motion platform, realize flexible manufacturing, greatly simplifies the system design of traditional laser cutting machine, and also improve the stability of the system, reduced the amount of maintenance, really suitable for application in the field of industrial processes.

Secondly, based on the characteristics of the sheet metal industry, most of the artifacts within 2 mm for the thickness of sheet, matching a wupan watts of fiber laser, the speed of cutting carbon steel plate can be up to 5-6 meters per minute, and already 2000 w CO2 laser cutting system of the actual processing speed, and laser system cost is greatly reduced. In the precision of lathe bed, considering most of accuracy of sheet metal parts, general design positioning accuracy in about 100 um, also greatly reduce the cost of the cost of lathe bed. Users, of course, depending on the processing of workpiece material and material thickness, and to meet the requirements of accuracy, can also be equipped with my company a higher power level higher positioning accuracy of series products.