Use AM technology to produce a pattern

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  • source:AVELLINO CNC Machining
Fast mould is made (RT) it is to use add material to make a technology (AM) the technology of fast production mould. Fast mould made technical development get be advocatinged energetically in 90 years, emerge in large numbers the technology such as such as Direct AIM, 3D Keltool and QuickCast. The great majority among these craft is put in a variety of confine on material and craft, but although such, still a few craft survived to come down. Recently, have the aid of is mixed at material craft the progress of two respects, the technology is made pay close attention to afresh again to AM mould on the market rise. Since 90 time, add material to make (AM) the technology passed long evolution, had derived the mould with two kinds of broad range to make technical kind. The first kind is to use a master mold to make mould or tool set, the 2nd kind is to use AM equipment to make actual mould or mould mold insert. The mould makes add the method that decrease type and these to add material to produce a method contrary, CNC treatment, namely traditional pattern produces a method, it is the technology that a maturity is perfected and is understood adequately by everybody, already reached the world level that produces archetypal product and manufacturing Injection Mold Tooling at present. No matter treatment process is to was milling completely to still include EDM to machine, the material that CNC treatment means won't be existed substantially by traditional pattern workmanship the limitation of qualitative, dimension and precision respect. Direct mould makes the direct pattern that uses AM technology implementation make a method do not ask to have a model, and creating metal or plastic component field have numerous treatment to make plan. These advantages can reduce a mould to make the move of the process, managing cost and time. A few manufacturers had made the metallic mold insert that Injection Mold Tooling uses in use AM, among them, linear company is counted year since pass agglomeration of direct metal laser in successful ground all the time (DMLS) the production that mold insert will come to complete part of Injection Mold Tooling. Since 90 time most popular direct mould makes one of forms is Direct AIM, it uses smooth solidify stereo shape (SL) the component serves as a mould. The purpose that develops this technology is the part noting model that uses relatively cheap mould to make small lot. Although this engineering technology already with each passing day be on the wane, but the occurrence as a result of harder SL data, it is in lifted to revive smally in recent years tide. The development of 3D Printing machine also nots allow to ignore. The 3D Printing function that comes from OBjet, 3D Systems and Stratasys company serves as effective fast mould make equipment quite, when wanting mould thermosetting plastic and balata part especially (graph 1) . The melt deposit of Stratasys company shapes (FDM) the technology that print is applied already successfully shape at heat / vacuum shapes direct mould is made. The pattern that uses this kind of method to make is being put in poriferous construction substantially, this kind of construction can let airiness, avoided the need of bore greatly thereby. FDM mould still is applying at asking to make application more strictly directly at present, if strong tool set is provided,shape with hydraulic pressure mould. Mould of graph 1 RTV is made and polyurethane is cast and, direct mould is made and differ want bureau be confined to surely small-sized component. ExOne and Voxeljet company own the large system that can make direct pattern, include the VX4000 of Voxeljet, this system can compose is built be more than 3in of × of 12in × 6in (1in=25.

4mm) mould. Indirect mould is made at present, a variety of craft that are based on a model had been developed to be used at creating a pattern quickly through AM means on the market, its cost, production cycle and work skill force each are not identical. Overall for, any craft, no matter be to sum mood, decrease type or become type, can use at indirect mould to make. The precision of these craft depends on greatly the precision of the method of production mould. Only few production domain can resemble fusible pattern casting such getting the influence with AM so profound technology. Be in early at the beginning of AM technology develops, the substance folding a layer of Helisys company is made (LOM) the system uses the paper that fold a layer at fusible pattern to cast, the reason is containing grey amount at this kind of material inferior. This company is passing QuickCast at present (a kind of smooth solidify are stereo shape compose builds type) , gush candle and gush fat system will make cast a mould, if PolyJet And Multi-Jet shapes (MJM) , use alternative laser frit to written guarantee (SLS) treatment gets together benzene Xi and use FDM technology to machine ABS colophony. In plastic domain, a lot of need produce opposite less lot the company of plastic component is using silica gel pattern. Include among them will irrigate inside AM mould billows vulcanization of shaping fundamental room temperature (RTV) the rotational moulding of mould or polyurethane shapes mould (graph 2) . Use at reacting inject shapes (RIM) or the epoxy resin mould of standard Injection Molding is made can make bridge model as the method with a kind of effective economy. Graph one-time mould also can be in the Nextpage of 2 3D Printing mould that with Yu Gui glue casts effect is produced among AM, and FDM technology applies what Yu Fu joins material field successfully to be able to rinse arbor. Other the RT craft that is based on a mould included to cast zincic alloy mould to make, 3D Keltool, MetalCopy, PHAST, V-Process and balata gesso mould are made. High-powered mould is passed use high-powered pattern, shape cycle becomes actualer than making the cycle of the mould is more important, and apply AM technology to form passageway of comfortable form refrigeration to be able to conduce to inside the mould accelerate shape periodic. The appearance photograph of these passageways and mould cavity suits and make refrigerant OK had flowed from which, faster than linear passageway. The experiment shows comfortable body is cool can will shape cycle shortens 30% above and the quality that can promote a component. This kind of effect can produce main effect to component cost and manufacturing rate. The method that another kind of executive quantity of heat manages is to use functional sex to classification material. Its method is in the mould the surface uses the data with so hard and durable steel of tool of such as H13, be like,in mould the rest the part is used copper alloy material of such tall thermal conductivity. Optomec and POM company used the LENS technology that comes from Sandia Labs company, apply successfully at making mould and tool set directly with cupreous core. Adding material to make with ultrasonic by Fabrisonic company at present by the ultrasonic solid technology of Solidica company commercialization (UAM) the name creates domain promotion in fast mould. This craft can use aluminous, copper and rolled steel to create a pattern, can use at tool set casting, fusible pattern to cast shape with vacuum. UAM can be made piece complex in all form refrigeration passageway, and can go to different metallic band one case, can create a pattern that uses a variety of data (graph 3) . Metallic spray technology, such as comes from RSP Tooling and Ford Motor Co.

technology, also proved to be able to pass functional sex to classification data will prolong mould service life considerably. Graph the mould that the 3 metals that use sand mold to make cast mould AM to also be being used at making a variety of other types, include fixture, make, pattern plate, bore guides provide and other appliance. Because this kind of mould involves complex external form or mould of much axial via, AM can offer very distinct advantage. Mould appearance is OK come out through digitlizing means to be made accurately, with fixed position the mark keeps consistent. Assemble what what need on product line to make provide or the carbon amount of clamping apparatus comparatives normally little, but after the first time iteration that creating a pattern is tasted, follow-up version can emerge according to needing to be made quickly. Other the pattern that suits to use this kind of means to make included in all form punch mould, bore guides with long edge, measure of wiring harness examination and the firm that are used at quality to control an examination are provided. Although prospective development opportunity has a lot of small-sized solutions to exist, but domain of small lot production still needs to develop further. To the amount of insufficient 100~500 group, decide the AM that suits most or the craft that are based on a mould very hard. The processes a business namely demand of the cause that creates this kind of appearance is changing everyday. Nevertheless, if use thermoplastic material exports way, FDM and SLS and photograph of aftertreatment innovation craft are united in wedlock, effect is produced very likely also in this domain. The graph is used 4 at cup body to cast a mould inside in all a variety of restriction that form refrigeration passageway and technology of AM of passageway of traditional pattern refrigeration did not remove a design to go up, but it changed these limitation. In all the feasibility with cool body changes this kind namely among them one of. Current, also a few new restriction had been formed, and the consciousness that changes to this kind is being strengthened, the solution of government of quantity of heat of progressively innovation also hopeful is come out by development. CNC Milling