Shape automatically quickly (RapidPrototyping) technology is the direct basis that in recent years development rises CAD model produces model quickly or of the spare parts into group technique floorboard, it is compositive CAD technology, numerical control technology. The: of achievement of modern science and technology such as laser technology and material technology? Xi of border of Liu of garden of of Ran of a key to do sth is troubled by of krypton of S of branny frame of Buddhist templeput on the brakes of plaque mallet to hold garden to flag couple of stew of of of brilliant of ú of any of several hot spice plants is still painful model of geometry of AD of Mo of Yong languid sets out, through software statified disperse and numerical control shape system, with stimulate beam of light or form hypostatic part. The overlay that as a result of it a series of 2 dimension make a complex three-dimensional production translate into, can be in consequently almost aleatoric and complex component need not be made below the condition of mould and tool, increased production greatly efficiency and make flexible. Shape automatically quickly the technology does not come out, already achieved quite big market, development is very rapid. People chases a layer to add a way to material this kind of new production method already suited stage by stage. The staff member of production industry try every means uses this kind of modern method, work to also go well with the conforming that passes all production technology. People grows with its avoid in all short, benefit is extraordinary. With CNC Machining, cast, the production method such as model of metallic cold spray, silica gel together, shape automatically to already made the strong instrument that contemporary model, mould and spare parts make quickly, got applied extensively in the domain such as autocycle of aerospace, car, home appliance. The process that shapes quickly is the model of three-dimensional CAD substance that makes a product above all or file of curved surface model, its changeover becomes STL file form, reoccupy one software cuts "(Slice) to give set ply from STL file " a series of a layer, perhaps cut from CAD file directly a series of a layer, these piece the layer accumulates the appearance that rising still is a design spare parts by order. Next, transmit the data of each afore-mentioned layers in fast and automatic forming machine, be similar to the computer to pass the information that print to printer, add a way with material ordinal do each and connect at the same time each, until complete whole part. Accordingly, shape automatically quickly can define for a kind of random that will store in the computer three-dimensional model body information chases a layer to add a law to be made directly through material come out, and the new-style production technology that does not need special mould, tool or artificial interference. Shape quickly the advantage with technology and traditional method more distinct than having photograph and characteristic: ? . ? ) product production process has nothing to do with the complexity of the spare parts almost, can realize freedom to make (FreeFormFabrication) , traditional method cannot be likened to this. (2) the unit price of the product has nothing to do with batch almost, special agree with the development of new product and odd the production of a small lot spare parts. (3) because use the means that is not osculatory treatment, change without the tool and wear away the problem of and so on, can accomplish unmanned value to defend, need not the technical knowledge of machine treatment respect can be operated. (4) wait without cut, noise and vibration, be helpful for environmental protection. (5) digitlization of whole production process, have direct correlation with CAD model, spare parts but can small, be seen namely earning, can revise at any time, make at any time. (6) be united in wedlock with traditional method, can come true to be cast quickly, fast mould is made, the function such as production of small lot spare parts, produce the energy with methodological new infuse for the tradition. Smooth solidify is stereo modelling (SL, Stereolithography) this technology is raw material with photosensitive colophony, what the computer control leaves is ultraviolet laser is pressed book a spare parts each statified and sectional outline is orbit to scan to pointwise of liquid state colophony, make be produced by the colophony layer of scanning area smooth aggregate reaction, a layer that forms a part thereby is sectional. End when a solidify, shuttle table, be in former the colophony appearance with good solidify again so that a new liquid state colophony undertakes issueing solidify of a scanning. A of new solidify firm agglutinate is advanced one goes up, repeat so make till prototype of whole spare parts end. SL law is the RP technology that the first devoted commerce uses. The SL equipment that at present the whole world sells occupies the 70 ％ left and right sides of RP equipment sum total about. The characteristic of this kind of method is precision quality of tall, surface is good. Raw material utilization rate near 100 ％ , can make appearance particularly complex (like hollow spare parts) , particularly careful (wait like hand act the role ofing, handicraft) spare parts. Statified thing is made (LOM, the scrip that craft of LOM of LaminatedObjectManufacturing) has bosseyed besmear thermosol glue through heating roller heats stick receive together, the laser that is located in upper part according to CAD statified model place obtains data, with the outline of inside and outside that stimulates beam of light to become paper cut place make a part, next a new paper again overlay above, mix through hot pressing device below already cut layer agglutinate is together, stimulate beam of light again cut, chase a cut to stick syncretic cut repeatedly so... till model of whole spare parts is made,finish. Alternative laser agglomeration (SLS, Se1ectedLaserSintering) this law uses CO2 laser to make the sources of energy, the modelling data that uses at present is all sorts of pink more not material. On even on workbench shop one very thin (μ of 100 μ ~200) pink not, stimulate beam of light to be below computer control according to the spare parts statified outline has undertake agglomeration optionally, a reentry after finishing issues an agglomeration all right. The pink with the redundant take out after all agglomeration is over not, undertake the processing such as burnish, drying acquires a part again. Current, mature craft material is candle pink and plastic pink, with the metal pink or pink of pottery and porcelain undertake sticking receiving or the craft of agglomeration still is in experimental research phase. Melt deposit modelling (FDM, the key of craft of FDM of FusedDepositionModeling) is to maintain half flow to shape material just is over melting point (normally control is comparing melting point tall 1 ℃ is controlled) . FDM shower nozzle suffers CAD to divide number of plies to make according to control the frit silk material of half flow condition (filar material diameter is in commonly 1. 5mm above) from inside shower nozzle extruding comes out, caky the layer that forms outline appearance. Every ply limits is in 0. 025 ～ 0. 762mm, one cascade forms model of whole spare parts finally.
CNC Milling
CNC Machining