Report processing technique makes medium application in big airlines

5% , the others is the material such as excel in steel and titanium alloy. Because this is in production process of big airlines airframe, with cutting, shape, join, assemble wait for a technology to give priority to [2] , and regard aviation as engine (include big airlines to use big contain path to compare eddy fan engine) the place of non-traditional machining technology in production technology holds proportion lesser. But the conclusion with the not fundamental non-traditional machining in cannot reaching big airlines airframe makes a process accordingly. Contrary, non-traditional machining technology also is one of production technology of big airlines airframe indispensable component, the necessity show that big airlines airframe makes technology of non-traditional machining of the need in building is in the following respects. (1) still includes to comparative in structure of big airlines airframe the alloy of quantitative composite material, titanium stuff that undertakes mechanical cutting is machined not easily, adopt non-traditional machining technique, more realize these material easily shape. (2) also is had in structure of big airlines airframe quite the diagnostic structure of the type such as quantity of interference sex of the amount, big purify, tall ratio of pit-depth to pit-diameter, Bao Bi, use non-traditional machining technology or the non-traditional machining technology that combine with photograph of other processing technique, the production technology of airframe of outstanding to realizing the treatment of structure of this kind of feature to having action;(3) big airlines includes the production of plane structural member not only, still included plane structural member to make the production of the mould of a need and tool, in these respects, non-traditional machining technology has extensive applied space. (4) is in the production of big airlines airframe, need considers the factor of the respect such as safe, life, environmental protection and cost integratedly, combine non-traditional machining technology reasonably in production process, be helpful for raising treatment efficiency and precision, and reduce finished cost, a few special functions of contented big airlines demand. In domain of non-traditional machining technology, processing technique belongs to report to make the category with the less application in building in big airlines airframe. Later development namely with report processing technique is exemple, elaborated the report in at present big airlines airframe is developed and be being produced the main application object of processing technique and limits, introduced report processing technique is mixed in the importance in executive process characteristic, right with report processing technique was the farther promotion in the non-traditional machining technology of the exemple is developed in big airlines airframe and be being produced and development to offer corresponding proposal. Processing technique is in report to big airlines is developed and produce medium applied electricity processing technique is the one large category in non-traditional machining technology, it is have the aid of the treatment method that can wait for energy to their combination will realize material to excise or perhaps increase at electric energy and electrochemistry, because these technique go back on his word to differ with excision or the energy form that raise material, usually cent is electric spark processing technique and electrochemistry processing technique two kinds big [3] . Be in the production of big airlines airframe is at present medium, electric spark processing technique and electrochemistry processing technique all have the application of certain level, now these two kinds of report the main content such as object of the principle of processing technique and actor defect, application, suitable scope is elaborated as follows respectively. Treatment of 1 electric spark shapes processing of technical electric spark is to be below the condition that certain insulation medium exists between workpiece and tool, use polar between the report that the pulse sex scintilla of generation discharges corrodes a phenomenon, make conductor (workpiece) the technique that achieves treatment goal by purify. Electric spark processing also belongs to the treatment that heat up frit, can generate certain ply in treatment surface again casting layer, again the craft parameter such as the ply of casting layer and electric current, weaveform is concerned. Electric spark is machined also dispute contacts treatment, treatment process does not have treatment stress, can in Bao Bi the diagnostic structure that waits for changeful body spare parts is used in treatment, but the electrode that electric spark machines can produce loss, influence of the meeting after be being used for many times machines quality. In electric spark treatment shapes technical respect, basically include electric spark to shape technology and line cut shape technology two types, and the alloy of electric spark surface that can regard exterior modified or increment as to shape changes a technology. (1) electric spark shapes technology. Electric spark shapes of the makes by difficult cutting material special structure that the technology basically uses in big airlines airframe to have appropriate measure make. In the rocker in be like the gearing that machinery contacts between central clutch operation and helm face and transmission drag link model antrum, the nozzle in plane fuel system and slippery oily system and tracheal join head, plane annulus accuses component of system of the fluid drive in the system to wait. Electric spark shapes when the technology is used at these component to undertake machining, basically show the following characteristic: A.

Electric spark shapes treatment precision of the technology is tall, highest can amount to ± 0.

01mm, treatment surface quality is good, all be in when general precision work Ra0.

8~1.

Inside the limits of 6 μ M [4];b.

Electric spark shapes the feature of the component that the technology basically uses at having complex structure shapes, the material that is aimed at basically is the material such as excel in steel and titanium alloy, these diagnostic structures have certain interference sex normally, and precision demand is higher;c.

In process of electric spark processing, need processes the data of the spare parts according to place, undertake choosing to electrode material, when be like treatment titanium alloy, preferential choose black lead to be electrode material, material of the electrode in avoiding to machine a process pollutes;d to spare parts generation.

Electric spark shapes the technology often is united in wedlock with photograph of other treatment craft [5] , in the treatment of structure of a few features, commonly used electric spark shapes the technology has final precision work, achieve;e of fruit of equivalent of Qing Leng, clear part.

Electric spark shapes in the treatment of the auxiliary unit such as the mould that the technology needs in place of preparation of big airlines structural member, clamping apparatus, application is very wide, be model antrum, model face and one of main treatment technique that cooperate a part [6] . (2) line cut shapes technology. Line cut shapes the technology basically is used at big airlines of the component of experience of have nothing to do with of appropriate measure shape the cut of cut and relevant component mould and tool. Line cut shapes the treatment of electric spark discharge of the substaintial electrode of the technology that it is a line, its machine characteristic and electric spark to shape technical photograph is similar, in treatment accessibility respect is differred a bit, when making structural cut closes inside open sex, need what machine beforehand to wear filar position, but its machine effect to lead apparent excel the electric spark forming machine of coequal power bed, efficiency of the biggest cut can amount to 700mm2/min, and optimal surface surface roughness can amount to Ra0.

02 μ M, treatment precision can amount to ± 0.

002mm, preparative time is short at the same time, use cost is inferior also, because this is multi-purpose at among with final treatment working procedure. (Alloy of surface of 3) electric spark changes a technology. In addition, the alloy of electric spark surface that can regard electric spark processing technique as retrorse and outspread technology changes a technology also is function of big airlines structure a kind of craft with the more application in exterior modified, the surface that its are the conductor that the conductor that regards electrode as a kind regards matrix as in additionally one kind constitutionally undertakes alloy converts metallurgy reaction, form a kind of new alloy layer [7] . The technique of character of etc of hardness of the exterior quality that be changed thereby or improves the conductor that serves as matrix, surface. Adopt this technique, can improve the exterior performance of the spare parts effectively, like wearability, anticorrosion sex, enhance the performance such as exterior hardness, achieve thereby make the spare parts reduces the heavy, goal that delays birthday and promotional performance characteristics. Alloy of electric spark surface changes a technology to basically be used at landing gear to close put move canister, flap to make move canister, annulus to control the systematic rocking arm function that has wear-resisting demand exterior modified. Alloy of surface of electric spark of #p# subhead #e# changes a technology to apply at these functions when exterior modified, basically show the following characteristic: A.

The ply of exterior alloy layer is opposite very small, be in below the circumstance normally 0.

15mm less than, in-house to matrix influence is quite faint, can change the exterior function;b of base material only.

When using hard alloy material to undertake exterior alloy is changed, exterior hardness can amount to HRC70 above, wearability appearance is prominent to having at base material raise;c.

Exterior alloy layer in use somewhat when loss, can pass again alloy is changed undertake filling machining [8] , the performance of layer of alloy of the surface after filling treatment is relative the first time the change of treatment is not big;d.

Need to pass the data that alters electrode only, can according to the function what ask to the surface is different, undertake the preparation of layer of different function alloy, achieve wear-resisting respectively, be able to bear or endure corrode, wait for functional;e as intermediate layer.

Spend the change of the form of oscillator and electrode and structure through changing alloy, can achieve a variety of complex traits, the exterior alloy that waits for a structure like surface of sex of lumen, interference is changed, the external form that turns equipment as a result of alloy of electric spark surface is lesser, can realize outfield maintenance. 2 electrochemistry shape technical electrochemistry processing is the electrochemistry reaction principle that uses a metal to produce positive pole to dissolve in electrolyte and a kind of technique that has processing to metallic stuff, the put together collaboration that passes electric energy and chemical energy namely is used and generation turns over eletroplating process, its size range of pipe bent is wide, processing can undertake on major conductor, productivity is tall, can achieve better exterior surface roughness, in treatment nonexistent cutting force, treatment surface does not have remarkable blemish layer, tool cathode is in treatment not loss, can use for a long time, but electrode design is relatively complex, electrolyte can arise to be corroded certainly to machine tool, clamping apparatus and spare parts, and preparative technology is sophisticated, executive cost is high [9] , say normally shape to electroanalysis technology. Electroanalysis shape the technology is multi-purpose the treatment of the structure of feature of big airlines structural member that has large surplus purify at be being needed by what corrode material not easily to be made, if landing gear is made,change the diagnostic structure such as the profound aperture inside the canister. Still can pass at the same time slight local electroanalysis processing, achieve a variety of spare parts appearances electroanalysis etch, it is one of main technique that the spare parts labels. Electroanalysis shape when the technology is machined with feature of component of airframe of Yu Dafei machine, its are main characteristic expression is: A.

Basically use at steel structure of batch excel in large surplus purify, treatment precision is highest can amount to ± 0.

08mm, exterior surface roughness can amount to Ra0.

8 μ M;b.

Do not need to have the place of electrochemical machining on structural member, must have coating, gelatinize, stick the protection such as film, machine place in order to avoid electrolyte to cause to these blame corrode;c.

Electroanalysis processing is multi-purpose the large surplus purify at intermediate process, need to wait for craft photograph union with follow-up mechanical cutting treatment, but be in a few special inside in the treatment of aperture structure, can through electroanalysising processing finishs;d alone.

When electrochemical machining, those who need to process data according to place is different, have the change of the electrolyte of specific aim, reduce electrolyte to machine the adverse effect;e that material causes to place.

Use electroanalysis when etching, must notice control electroanalysises voltaic size and blame etch of area defend, will etch deepness control is in 0.

05~0.

;f of 10mm less than.

Electroanalysis processing belongs to blame contact treatment, machine what material interior stress is helpful for in the process to release the elimination with leftover stress, remove effect to spare parts metabolic apparent [10] . The place on summary and revelatory put together is narrated, processing technique is flying to the report that regards aviation engine production technology as main component greatly position also is occupied in machine production technology, have corresponding development to improve a space. This is made plant in big airlines the one link that cannot neglect also is belonged to in systematization, omnibus production technology. Graph 1 it is the typical structure signal that empty guest uses non-traditional machining engineering technology to make on A380-800 big airlines namely. With report according to be opposite processing technique is the non-traditional machining technology of the exemple to produce the analysis of medium application and development in big airlines, medium application is made can get undermentioned inspiration in big airlines to non-traditional machining technology. (1) makes the main component in the technology as aviation engine, non-traditional machining technology also can apply extensively in big airlines production technology, be led to heightening treatment effect and because treatment quality and the meaning;(2) with reduce finished cost to having important are big of the plane make the production existence with aviation engine wear differ tremendously, because this is in in big airlines production technology when technology of use non-traditional machining, need to notice the respect such as the limits that machining, efficiency, cost, precision has omnibus consideration especially, make non-traditional machining technology can create the demand that these respects get used to in the process in big airlines, need the characteristic of basis application object and relevant requirement, undertake the improvement of specific aim, it is a variety of craft in order to get used to the production technology of the demand;(3) large aircraft that different structure or material make, detect technical synthesis, in development and manufacturing process, need is right incorporate non-traditional machining technology inside a variety of engineering technology undertake comprehensive ground considers to consider, the executive level that determines all sorts of engineering technology reasonably and place want achieved technical target, achieve the omnibus production technology that optimizes most to carry out a way thereby, big airlines of contented our country develops manufacturing demand. CNC Milling CNC Machining