Laser Cutting equipment (below)

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(1) lens of focusing lens focusing is used at stimulating the parallel that shoots cutting torch beam of light undertakes focusing, in order to obtain lesser facula and higher power density. Lens often uses the material that can pass through laser wavelengh to make. Solid laser is commonly used and optical glass, and because CO2 gas laser penetrates common nevertheless glass, use the material such as ZnSe, GaAs and Ge to make, among them the most commonly used is ZnSe. Lenticular appearance has double convex, smooth convex and sunken convex 3 kinds. Lenticular focal length is mixed to diameter of focusing gloriole spot focal deepness has very big effect. Do of focusing facula diameter and F of lenticular focal length and incident laser bundle the relation between diametical D sees a picture 5. See by the graph, when incident laser bundle when diametical D value is fair, put in value of F of focal length of lens of a first-rate to make Do of focusing facula diameter the smallest. The relation of focal deepness Fd and F of lenticular focal length sees a picture 6. As lenticular focal length reduce, focal deepness also decrescent. To Laser Cutting, diameter of hope focusing facula was reduced as far as possible. Such, power density can rise, be helpful for implementing high speed cut. But when lenticular focal length is reduced, focal deepness is lesser also, in cut ply bigger board when the cut side with obtain verticality good hard. Additional, when lenticular focal length is lesser, the distance between lens and workpiece is contractible also, in cut process lens is splashed easily the slaggy material such as foam is flyblown, affect the on the rails of cut. Accordingly, the requirement wants to ask to wait for an element to consider integratedly according to cut ply and cut quality, decide relevant focus. (2) the function of illuminator illuminator is the direction of beam of light that the change comes from laser. The beam of light that gives out to solid laser can use the illuminator that makes by optical glass, and the metal with commonly used to the illuminator in device of CO2 gas Laser Cutting copper or tall reflectivity is made. Illuminator is in use process, suffer illumination overheat to avoid illuminator and damage, need to undertake cooling with water normally. (3) nozzle nozzle is used at assisting gas to cut region spurt, its written guarantee configuration shape has certain effect to cut efficiency and quality. The graph is shown 7 times for the nozzle appearance with commonly used Laser Cutting, and the appearance of spray orifice has cylindrical, taper and shrink put form. Of nozzle choose common ground the material of cut workpiece is qualitative, ply, auxiliary aeriform pressure decide after classics experiment again. Laser Cutting uses coaxial commonly (air current and smooth axis are homocentric) nozzle, if air current and beam of light are not coaxial, easy when cut generation splatters in great quantities. The hole wall Ying Guang of nozzle aperture slips, with assuring air current smooth, because appear,avoid turbulence and influence cut quality. To assure the stability of cut process, answer to reduce the distance of nozzle end panel to workpiece surface as far as possible commonly, often take 0.

5 ～ 2.

0mm. Should use inert gase cut when certain metal, inbreak because of air to protect cut area metal to be not sent (general nozzle transforms division of cut of be involved in of constant and available gas suddenly in cut direction) and produce oxidation or nitrogen to change, criterion appropriate uses the spray head that adds protective shade. The nozzle texture that adds vitreous cloth with soft nap to protect a cover sees a picture 8. The technical parameter of Laser Cutting equipment expands of limits increasingly as Laser Cutting application, to get used to the need that cut of different measurement part machines, development gives a lot of cut facility that have different character and use. Commonly used basically have equipment of cut of type of drive of stage of cut of coordinate of equipment of cut of type of cutting torch drive, XY, cutting torch - equipment of equipment of cut of type of cut stage double drive, cut of type of an organic whole and Laser Cutting robot. (1) in equipment of cut of type of drive of cutting torch of equipment of cut of type of cutting torch drive, cutting torch is installed go up in portable type mast and edge mast crossbeam is transverse (Y axis direction) motion, mast drives movement of axis of X of cutting torch edge, workpiece is fixed go up in cut stage. Because laser and cutting torch depart are installed, in cut process, the stability of the parallelism of direction of scanning of beam of light of the transmission character of laser, edge and refraction illuminator can be affected. Equipment of cut of type of cutting torch drive can machine the part with larger size, cut production division is covered an area of relatively lesser, easy form production line with other equipment, but fixed position precision has ± only 0.

04mm. The typical structure of equipment of cut of type of cutting torch drive sees a picture 9. Use CO2 gas successive laser, beam of light conveys to be 18mm to the distance of cutting torch from laser. To maintain diameter of beam of light to convey in this the change of its appearance inside the distance does not hamper cut is machined undertake, the combination of oscillator viewfinder should be designed carefully. (2) equipment of cut of type of drive of stage of cut of coordinate of XY of equipment of cut of type of drive of stage of XY coordinate cut, cutting torch is fixed go up in frame, on stage of workpiece park cut. Cut stage dictates by numerical control direction of edge X, Y moves, drive speed is 0 ～ 1m/min commonly (adjustable) or 0 ～ 5m/min (adjustable) . Because cutting torch is opposite workpiece is fixed, the impact in allowing to be opposite to stimulating the attune of beam of light in cut process is little, because this can undertake even and stable cut. When cut workbench dimension when lesser, mechanical precision is taller, fixed position precision is ± 0.

01mm, cut precision is quite good, special agree with the accurate cut of small part. Also have additionally use route of X axis direction the cut workbench of 1200 ～ 1300mm comes to journey of direction of axis of 2300 ～ 2400mm, Y the spare parts that machines larger size. The main technique parameter of equipment of cut of type of drive of stage of XY coordinate cut is as follows: Laser of laser CO2 gas (close to provide form continuously partly) laser power source inputs voltage: 200V AC outputs voltage: 0 ～ 30kV is the biggest export electricity: 100mA laser outputs 2300mm of axis of X of travel of stage of power 550W cut, speed of drive of stage of cut of Y axis 1300mm (classification adjustable) 0.

4 ～ 5.

0m/min, 0.

2 ～ 2.

5m/min, 0.

1 ～ 1.

3m/min, 0.

05 ～ 0.

Height of 6m/min cutting torch (Z to) 1300mm × 2300mm controls the × of 6mm of the largest size of plank of treatment of float journey 180mm means of equipment numerical control (3) cutting torch - cutting torch of equipment of cut of type of cut stage double drive - equipment of cut of type of cut stage drive uprights at type of cutting torch drive and XY coordinate. Cutting torch installation is on mast and edge mast crossbeam is made transverse (Y to) motion, cut stage edge is fore-and-aft drive, hold cut precision concurrently to be mixed high the advantage of economic production site. Fixed position precision is ± 0.

01mm, cut speed adjusting range is 0 ～ 20m/min, it is the equipment of a kind of cut with more application. Among them distance of greater direction of axis of cut equipment Y is 2000mm, journey of X axis direction is 6000mm, but part of cut large size. Laser oscillator and cutting torch are installed together go up in mast, cut precision is quite good. The relation of precision of cut round hole and cut speed sees a picture 10. See by the graph, use cutting torch - the precision of round hole of cut of equipment of cut of type of cut stage double drive is quite good. And the manufacturing efficiency of this kind of equipment is very tall also, on thick 1mm armor plate, minutely can the round hole that cut diameter is 10mm 46. (4) in equipment of cut of type of an organic whole of equipment of cut of type of an organic whole, laser installation is on frame and wear fore-and-aft shift randomly, and cutting torch forms an organic whole with its actuating device transverse on frame crossbeam shift, use numerical control means to be able to have the cut of all sorts of figuration spare partses. To make up for cutting torch transverse shift makes smooth road length varies, normally length of stock smooth road is adjusted establish, homogeneous beam of light can be obtained inside cut area limits, maintain the homogeneity of cut face quality. Equipment of cut of type of an organic whole uses high-power laser commonly, in applying to thick board (8 ～ 35mm) large size steel structure cut treatment. Express the process capability of equipment of cut of laser of type of 5 listed an organic whole. The main technique parameter of equipment of Laser Cutting of type of LMX an organic whole sees a table the power of 6 process capability laser that express equipment of Laser Cutting of type of 5 an organic whole / KW1.

Limits of 4236 significant cut / 70002440 × of Mm1830 × 360002600 ～ of 360004200 ～ 36000 cut carbon steel is the biggest ply / the LMX25LMX30LMX35LMX40 of model of main technique parameter of equipment of Laser Cutting of Mm9161940 watch 6 LMX one form of characters or letters is effective cut width / Mm2600310036004100 is effective cut length / Mm can ask according to the user (standard 6m.

Precision of 1 fixed position / Mm ± 0.

0001 laser (CO2 gas laser) TF3500 (rated power 3kW) or TF2500 (rated power 2kW) (5) robot of Laser Cutting of Laser Cutting robot has CO2 gas laser and robot of YAG solid Laser Cutting. Normally Laser Cutting robot can undertake cut can be used at soldering again already. 1) diagram of structure of robot of L-1000 of CO2Laser Cutting robot CO2Laser Cutting sees a picture 11. Robot of L-1000 CO2Laser Cutting is polar coordinates type robot of 5 axle control, deserve to use C1000 ～ C3000 laser. By of beam of light installs 4 illuminator inside robot arm to convey, focusing hind is shot from nozzle. Illuminator is made with copper, exterior course reflexes processing, make beam of light delivers a loss not to exceed 0.

8% , and positional precision of the focus is quite good. Get to prevent illuminator blemish, smooth road is not contacted completely with the outside, still fill the clean air that filters through colander inside smooth road at the same time, have constant pressure, prevent the dirt all round to enter thereby. The main technique parameter of robot of L-1000 CO2Laser Cutting sees a table 7. Type controls the polar coordinates of configuration of movement of parameter of technology of project of main technique parameter that expresses robot of 7 L-1000 CO2Laser Cutting number of axle 5 axes (θ , W, R, γ , β ) setting condition is fixed work on mast in the ground or suspension limits θ axis / .

4 laser enter amount of 5 laser illuminator a diameter / Mm62 assists aeriform pipeline system 2 smooth Lu Qingjie use air pipeline system system of cooling water of illuminator of a laser is entered, give water. Robot of much joint YAGLaser Cutting is the beam of light that consumed fiber gives out laser in conveying to hold the cutting torch in robot arm directly, because this compares robot of CO2 gas Laser Cutting more agile. This kind of robot is by what solder so to the robot is transformed and be become, use show teach way, apply to three-dimensional board metallic spare parts, bian Xiuge, stiletto and cut machine the wool that waits like casting die of car bodywork model. CNC Milling CNC Machining