The titanium alloy of 787 planes uses Boeing the quantity exceeded the model that each business uses an aircraft before greatly. Other new-style airlineses also use data of metal of titanium of quite a few. Chain is supplied in aircraft manufacturing industry in, the process capability of titanium metal stuff will must expand, say in order to satisfy company of real need Boeing, begin a consideration from the machine tool first with its, still be inferior to beginning a consideration from cutting tool first. the workpiece to titanium alloy material and the spare parts that other high price is worth, a simple cutting tool or operation data table perhaps are machining center there is the data sources that uses value most in choosing a course. Be in in the near future in, why to meet to the treatment demand of titanium alloy does such apace increase? Because be in before long in the future, this kind of material will rise substantially in the use quantity in the plane. In fact, the place of Mr Steve Lovendahl of company of Boeing of no less than points out in that way, its are in the total that the titanium alloy amount that Boeing uses in 787 planes already exceeded the titanium alloy of type of all before Boeing to use an amount. Meanwhile, the competitor of manufacturer of this one aircraft uses titanium alloy data adequately as much, still have plane of new-style for military use, also using titanium alloy in abundantly. When all when these planes enter full load to produce entirely, the plane before to titanium alloy the demand of the spare parts will exceed order far supplies the titanium alloy process capability that has in catenary. Accordingly, to the supplier of treatment industry, the treatment of titanium alloy material is apparently at present once in a blue moon auspicious opportunity. However, mr Lovendahl says, in make full use of before this one opportunity, the most need in these suppliers examines the treatment method of oneself and resource way afresh. He says, pass new examine and verify only, just come in the light of real need likely the machine tool with new choose and buy. Job shops should realise this. However, may not must order the machine tool with a high price, answer to be decided according to actual condition. Titanium alloy is a kind of special material Mr Lovendahl it is Oregon city the expert of a production of large processing factory of company of Portland city Boeing. The engineers of he and other Boeing company concentrate energy here, launched a challenge to the treatment that concerns complex horniness metal structural member, they are the solution that solve these to challenge a problem and offers, often can share jointly with the suppliers of this company. He says, his own job unit often also discusses this issue: To a kind of specific titanium alloy spare parts, the machining center that should choose what type or what level after all just is right choice. For example, in need treatment Boeing the circumstance of 787 engine front seat falls, the staff member of Portland factory, can be in original when, the key concentration is being sought can mix for what choose on rigid and best machining center. Workpiece of alloy of this kind of titanium asks to use the treatment means of puissant milling mostly, its demand is very high, so that they hope,machine this one workpiece to be able to achieve much taller efficiency after all certainly through the tigidity of the machine tool. However, operate a makes analysis according to best to these 10 treatment, include a few original cutting strategy, making clear its is very tall certainly to the requirement of torque, but its are highest in the function range that the torque of demand still offers in place of standard machine tool, basically as current as Boeing company already the machine tool that aborning uses is identical. The treatment that is engine tailstock next (graph 1) . The treatment of this one component needs a machine tool with extremely tall tigidity. Here, the analysis that operates to treatment shows, requirement machine tool achieves torque of top class cutting, this exceeded any awaiting to choose the level that the machine tool can reach. But company of aircraft of essence of Mitsui of machine tool manufacturer (Mitsui Seiki) made a response, they will change their to have the design of HS6A heavy-duty machining center, in order to satisfy requirement of this twist quadrature. Graph Mr Lovendahl that the spare parts of these 1 engine tailstock is production of the treatment on the machining center that in low frequency trends tigidity designs says, the process capability that needs a machine tool to place undertakes this kind of analysis is very crucial, and also be quite easy. Use the formula that any machinist can get, can undertake to processing an operation one by one is evaluated. He says, always involve the titanium alloy part with higher value, this kind of analysis may point out explicitly, its machine need to use a new machine tool, because the job shops in catenary is supplied in aerospace,this basically is, often did not agree with this kind of equipment that titanium alloy machines. Contrary, they often have the device that is used technically at treatment of aluminous material cutting however (graph 2) . Graph 2 this is the machining center that machines engine tailstock to use. The treatment of titanium alloy needs to pay close attention to the character of the machine tool particularly, but a lot of job shops consider alloy of these problem Nextpage titanium rarely is a kind of different material. This are very apparent it seems that it seems that, and also be very important. Large to aluminium makes work for, its mainest machine tool machines parameter (besides the journey besides the machine tool) the rotate speed that involves main shaft possibly and drive horsepower. Contrary, to the treatment of titanium alloy spare parts, the torque that its most important parameter is main shaft and the deferent amount that get the cooling fluid when cutting treatment to go up along thrust direction (graph 4) . Previously, machine the parameter of corresponding machine tool that job shops needs to titanium alloy treatment, never perhaps had considered carefully. The treatment that the Boeing processing factory of city of graph 3 Portland is centering energy accept a challenge to concern horniness metal, large part and complex structural member pursues the torque of 4 main shaft is insufficient. The tigidity of system of machine tool a complete set of is removing conclusive action Mr Lovendahl to say to can throwing torque of how many spendable effectively, perhaps somebody hopes to become a such person: Run to the boss before say, does job shops need to acquire a new treatment facility? Nevertheless, he still thinks should be done according to what a lot of job shops place hope in that way, is not to pass a few already by test and verify the sort of not quite good technology goes machining spare parts of manufacturing titanium alloy, if try to be industrial change to provide a service with this kind of means, the price that pays so finally will bigger. The first Lovendahl says cutting tool, make clear according to the analysis, actually, when the treatment machine tool that seeks the most appropriate type, should begin a consideration from cutting tool above all. Job shops often begins a consideration from the machine tool first, is not first from agree with the machine tool that this workpiece machines begins a consideration with cutting tool. However, to the titanium alloy part that uses on a plane, or to holding the post of how he is large with the costly value part that has challenge sex character, its are richer the production methods of effect is: Decide above all most agree with these 10 rough machining, finish machining and get the cutting tool that cuts treatment and treatment strategy, next those choose repass the cutting parameter that machine tool place needs, have a look to should be recommended after all use which kind of machine tools. He says, this works to be not finished alone by job shops certainly. In technology development process, boeing company will with its supplier coact. Of course, the resource that itself of cutting tool company provides also is very precious. The tool supplier that has more substantial knowledge can be offerred agree with the cutting tool that all sorts of these 10 tall metal cutting that machine a characteristic lead, and the accurate method that uses these cutting tool effectively and parameter. The analysis begins from here directly. To all sorts of different operations and cutting tool, what should consider above all is its ideal cutting deepness and feed speed, and its material coefficient and a few otherer data-in, give the engine with main every time to machine the drive horse power that the operation needs and torque by job shops computation next, and the thrust that every time gets the place when cutting motion to need. Mr Lovendahl says, such doing can provide two very valuable benefit at least: Among them an advantage is to be able to simplify the course that seeks equal treatment machine tool, or is to choose a new machine tool, or chooses an existing equipment in the workshop namely. These data in data table can explain the machine tool gift that should choose what kind of property suits the treatment of this one workpiece clearly. Another advantage is, pass an analysis, may announce a cutting tool and which measure in handling detailed account should give way. For example, there is some travel data to make clear only in possible data table, torque requirement far outclass the other torque requirement of this craft. So new change this one measure, raise the remainder as far as possible at the same time the metallic cutting efficiency of 90% , this may make job shops is in quite certain technology of this top-ranking water production uses on the machine tool that gets more easily. The situation when company of Boeing of past of no less than of the 3rd advantage is machining engine tailstock is same, if cannot get appropriate treatment machine tool instantly, exceeded some limit, so the is main shaft not merely property that has main effect, be about to involve the systematic tigidity issue of the machine tool. The structure with a kind of fine tigidity, must can support tall torque main shaft. President Mr Scott Walker of company of Mitsui Seiki United States says, use a field in this, want to achieve the requirement of Boeing company, the low frequency trends that needs to pay close attention to a machine tool on certain level is rigid, he thinks this one tigidity should surpass the design level that any other machine tools had reached. This company optimized the design of machining center further, reduce the vibration of the machine tool as far as possible, this are in before is very important all the time, it is even under puissant cutting condition. Now, because of the HS6A that this processes a project and purchases machine tool, can be in the cutting treatment of 6342 titanium metal, achieve 16in3/min (1in=25. 4mm) metallic cutting rate, this basically is the cutting tool that chooses because of Boeing company and treatment strategy make these 10 treatment becomes a possibility. Current, the Portland factory that is in Boeing company shares such 5 treatment machine tools, among them two rough machining that are used technically at aircraft engine tailstock, and the others 3 special the finish machining at these components. Enough and adjacent Mr Lovendahl says, the kind that among them a main misunderstanding hampered job shops describes with him develops their treatment technology, they raised the normative requirement that operates to treatment above all, choose a machine tool again next, they think to be in beforehand impossible critically formulate gives standard of a craft. For example of cutting tool wearing away is a variable, it is specific to some cutting treatment needs how old torque to have very big effect truly. However, do not ask to reach the precision level of this one grade. But choosing appropriate machine tool is crucial really, although the requirement of the choice is so not strict. Saying with its is accurate in the machine tool ground is chosen the most appropriate, still be inferior to saying job shops is willing to be in by oneself more general-purpose according to its process capability and function are searched in the machine tool and choose appropriate machine tool. Below proper ambient conditions, any machine tools in these grade may be right choice, occasionally, all spare partses that these machine tools can machine high value. Accordingly, although be in the machine tool of these average level,choose, likely to job shops be difficulty, the machine tool that its choose is not a level too low, it is the price too tall, do not accord with effective demand. In short, the analysis that requires machine tool performance to place is necessary, very simple, its are main the purpose is to find agree with the machine tool that treatment of this application domain requires. He says, if do not have data, should achieving this one goal better is accomplished not easily. CNC Milling
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