Technology of high speed Laser Cutting

The laser of laser of laser optical fiber shoots bundle of according to the shift of dynamic scanner shift, compare with technique of traditional cut of CO2 laser metal, this kind of technology can improve treatment performance greatly, can implement the high speed cut of complex outline. In recent years, solid laser development is rapid, increasing appearance changes configuration, highlight most with the laser of laser optical fiber among them, this kind of laser has wonderful laser to conduct quality and very tall electricity efficiency, can output the laser power that is as high as thousands of tile, laser contains the laser illuminant of high mobile performance, can be below the case with very long focal distance the diameter of focusing of laser light beam with very small implementation, suit the cutting of metallic stuff to machine very much. Raise cut rate the graph is shown 1 times for laser of laser optical fiber of gentle style laser experiment quite, among them what aeriform laser chooses is to have representative CO2 gas laser. The picture is illuminant of 1 different laser, different the Laser Cutting rate that can achieve below circumstance of thickness of fine steel plate and different output power (cut gas N2) from the graph 1 in can see, the CO2 gas laser that outputs power to be 3kW and the laser of laser optical fiber that output power to be 1kW can be achieved almost the cut speed of close. And in output power same situation falls, because the laser wavelengh of optical fiber laser is apparent short the wavelengh at CO2 gas laser, the cut speed of laser of laser optical fiber is accordingly apparent laser of prep above CO2. As plate thickness reduce, this kind of advantage can become more apparent. In light beam of two kinds of laser intensity distributings and the condition with laser same quality falls, the focusing radius of optical fiber laser can narrow the 1/10 of radius of aeriform laser light beam. Come so, when laser output power is same, the intensity of laser light beam of cut workpiece rose a lot of. Additional, graph 1 showed the equipment of Laser Cutting of high dynamic performance that distributes stock linear actuating device is in the highest cut rate that cut can achieve when complex outline (maize active area) . From this the part also can see, the cut ability of laser of laser optical fiber wants laser of gas of apparent prep above. The difference between rate of this kind of the biggest cut that can achieve and effective outline cut rate is in what behave in purificatory plank and the cut treatment of plank exceeding essence of life to be highlighted particularly. The research of IWS institute proves: Ply 0.

5mm, high quality asks the sharp cut speed of electrical engineering and special board can achieve 100m/min. In the workpiece with cut complex form, be in for example cut electromotor or when core of the rotor of engine, stator, device of conventional laser beam machining exceeds the cutting rate of 20~30m/min almost impossibly. Cut is complex outline to reduce the difference of afore-mentioned cut speed, make laser also can achieve the sharp cut rate of the 100m/min that achieves in purificatory plank cut in the laser beam machining in appearance of cut random outline. IWS institute research and development technology of a kind of new laser beam machining, namely RemoteLaser Cutting engineering technology, this kind of technology has the laser light beam with very good optical fiber to conduct quality. In engineering technology of Laser Cutting of Remote high speed, laser is shot bundle undertake below the athletic control in scanner of high dynamic performance, the laser that makes metallic stuff moves in high speed is shot bundle in be burned frit, compare with traditional gas laser, need not use the protective gas depart with respect to achievable metal stuff. Realized the Laser Cutting treatment of metallic spare parts. Because there is very large space between scanner and workpiece, because this laser shoots bundle of little movement in controlling a system,control is on workpiece metropolis expression is a paragraph of larger space. The scale that its magnify concerns and relatively lesser, mobile laser shoots bundle of quality, realized the Laser Cutting of high rate. To show the ability of technology of Remote Laser Cutting, experiment personnel is in with optical fiber laser different ply is high grade the cut on armor plate by 100 ф 6.

The matrix form hole that the aperture of 5mm forms is, if pursue,2 are shown. Test result shows, it is in ply 0.

A such aperture is being machined on the armor plate of 2mm is the time that needs to be less than 3s only. It is conversion basis with the cut length of these aperture, its cut speed has exceeded 60m/min. Nextpage pursues 2 in ply 0.

The matrix form aperture that comes out by treatment of RemoteLaser Cutting engineering technology on 2mm plank fastens cut thick board after fine steel material is using very high laser power, also can use the plate material with very big ply of cut of laser of this kind of optical fiber. If use laser of common 3kW Singlemode optical fiber when, can use ply of cut of RemoteLaser Cutting engineering technology 0.

The fine steel plank of 7mm. Use this one technology, also can finish the cut of weather strip of tall complex outline that the graph shows 3 times. Graph 3 use cut of laser of 3kW optical fiber and become, the weather strip that measurement standards is 80mm × 30mm in addition, remoteLaser Cutting technology can realize high accuracy requirement. The arris edge after Laser Cutting is having very small burr and very tall surface surface roughness. Because the cut rate of RemoteLaser Cutting equipment is very high, because this classics kerf conducts the quantity of heat in workpiece,more traditional than using Laser Cutting technique wants to be gotten less much. With the tradition strong cut processing technique photograph into parts to compare, technology of use Laser Cutting is OK and managing mix to the production cost that reduces a mould long grind charge, in addition, the noise that producing the spot is very low also. Another key of the project of this one research and development of material of IWS of institute of suddenly Lun Huofu and ministry of Laser Cutting technology is: Raise solid laser the quality of Laser Cutting of large wall spare parts. Accordingly, they are mixed to laser of Remote optical fiber the Laser Cutting engineering technology of this laser undertook sand detailed research and analysis, found out contented user economy and the solution that high quality asks. The combination of cut technical data is in to assure high quality Laser Cutting while the reliability that still very tall Laser Cutting produces a course, must decide parameter of craft of first-rate Laser Cutting truly. Of working parameter optimal match the cut kerf that can make can get high quality in the cut of all sorts of material (if pursue,4 are shown) . When parameter of affirmatory first-rate craft, want to consider a lot of influencing factor, speed of the pressure of gas of the focal position that is like laser focusing, cut, cut, cutting torch and by the geometry of the span between cut part and cutting torch size shape, be opposite a series of after the experiment passes statistical processing, decided the mutual influence between these important parameter and correlation finally. For example, determined the optimal cut rate that can achieve according to the correlation of laser focusing and cut pressure. Additional, improve the angle that rise to set out from the system the laser cutting torch with appropriate shape of size of geometry of research and development, the kerf that gets high quality in order to assure also is very necessary. After optimizing parameter, cutter of solid of optical fiber laser has higher cut power and cut quality, can make produce efficiency to raise 3 times above at least, the competitor that these characteristics make the technology of cut of gas of metallic stuff CO2 that technology of solid Laser Cutting makes a tradition the most powerful, wide application receives in lieutenant general of technology of plate material Laser Cutting. Graph the 4 adjustment that pass parameter of pair of Laser Cutting craft and it is OK to optimize in ply the cut on all sorts of metal stuff of 5 ～ 15mm gives the high quality kerf like fine steel test specimen CNC Milling