Digitlization technology makes medium application in mould of figuration of aviation Ban gold

Ban gold spare parts is to make an aircraft appearance, structure and inside the main part of outfit, ban gold figuration is one of crucial technologies that aviation makes. The quality stand or fall of Ban gold figuration basically depends on the production quality of mould of Ban gold figuration. Digitlization of mould of Ban gold figuration is made is to considering hardware data plasticity to be out of shape quality of characteristic, figuration asks to wait for the foundation of the element to go up, design of support mould digitlization, digitlization makes modular form, optimized treatment craft parameter realize the accurate control of process figuration, make do not need after spare parts figuration machine or a few treatment can satisfy quality requirement. Ban gold figuration asks to the technology of the mould modern plane is strict to pneumatic appearance requirement, to Ban gold the requirement is more than it is joint, should have stable quality and function state more. The demand such as function of stability of process of precision of the exterior quality to Ban gold spare parts, appearance, figuration, figuration and product percent of pass rises increasingly. Be like Boeing 747-8 project, its wing appearance is less than commonly relative to the deviation of academic appearance 0.

5mm, not smoothness is less than 0.

05~0.

15mm, ban gold the precision of curved edge height asks control is in - 0.

1~0.

2mm. At present the conventional treatment method of mould of aviation of Ban gold figuration basically is to press appearance example + after example of special type angle or mat of form of model of positive and negative expect, take transfer the model is harmonious make, this kind of technique makes the mould appearance error that give can be achieved 0.

2~0.

3mm, local achieve 0.

5mm above. So, promote technology of Ban gold figuration the standard, must want to promote mould of Ban gold figuration to make digitlization technology. With traditional pattern production technology photograph is compared, requirement of production technology of digitlization of mould of Ban gold figuration is more complex. The first, the complex degree of appearance of mould of Ban gold figuration face [1] , plasticity is out of shape the element such as characteristic and figuration spring back involves itself of its spare parts to digitlize a definition not only, still include the definition such as digital-to-analogue of craft of working procedure of next semifinished product, makings, figuration, figuration; The 2nd, in production process of mould of Ban gold figuration, its plasticity metabolic is nonlinear what bring not the uniqueness, parameter uncertainty that cannot go against the sexual craft such as the gender to go up, affecting the quality of mould of Ban gold figuration and efficiency. The problem of method of traditional aviation mould treatment and existence is with Boeing 747-8 project exemple, 65B03524-49/50 spare parts is figuration of gold of a Ban, existing workmanship method measures a technology to deliver craft processing technique for imitate commonly (press appearance example namely) the method that creates aviation pattern with example of special type angle, specific means has 2 kinds. (1) press appearance example. Profiling uses profiling of profiling head scanning to save file to disk on mill of numerical control profiling, next the data that v saves file to disk machines a mould. (2) press a plane, makings of mat of the form that return a model is thick take make profiling, profiling of profiling head scanning is used to save file to disk on mill of numerical control profiling by profiling, next the data that v saves file to disk machines a mould. In be based on imitate quantity to transfer the Ban gold that give priority to in production mode [2] , put in the following problem: (1) Ban gold although design model form is accurate described final figure and measure, but did not consider Ban gold the mediacy of process, inextricability design information to create the contradiction that delays develop. (2) make the profiling, aviation mould that relies on milling mill to pass face still stay commonly by example have 0.

5~3mm surplus, and surplus not all, clamp builds a capacity very big. Be badly in need of finding a kind to be had to similar pattern in actual production relatively the treatment method of high accuracy. Anyhow, ban gold the number with the geometrical appearance exact lack of each link defines workmanship course, the spare parts makes accuracy assure hard. The technology digitlizes in delivering treatment method to be made in mould of figuration of aviation Ban gold core that the number measures is digital amount deliver treatment method. Its basically define workpiece model form and craft model shape through facing process, move form create numerical control program to the mould, with the number the quantity delivers numerical control equipment a such collateral digitlization make a process. The essence of this process is combining form of model of craft of form of the model that discharge appearance, figuration to wait for next makings, figuration to accuse the CAD in form node each at semifinished product geometrical model form is used at figuration mould to design production statement directly design of parameter of design, craft and CNC Machining program establish the link such as the model, can make in example, the mould is made in keep given from beginning to end tolerancepublic errand. This measures what a certain number of delivered link cause to accumulate an error besides imitate with respect to disappear, reduced the effect of factitious not certain factor, changed what repair a fault repeatedly to produce a method, come true thereby nicety, fast the production with low cost. Digitlization production technology applies case row mediumly to be with the spare parts of figuration of casing costal region in Boeing 747-8 project in brake tool set exemple, use the digital amount that is based on production model form to deliver a method, design of brake pressing mould face relies on the form of figuration craft model in production model form is not to rely on a spare parts directly primitive digital-to-analogue. Form of figuration craft model considered the factor such as spare parts spring back, and gave out revise plan and correction reference cost, to model face and dimension undertook be correctioned reasonably beforehand. 1 data is measured 1.

1 with portable measure an arm to measure example to generate data (1) put example level land on platform, with portable the probe that measures an arm as far as possible the horizontal of the appearance flank that sticking example and platform detects the appearance of example, every nod apart 20mm left and right sides, collect data, collect the termination shell of example data by lateral method. (2) the number part of every angle of example, 2 are collected to nod in number part with probe, in order to determines the real position that angle changes, detect 2 times with an example, with affirming collection data dependability. (3) example exceeds portable measure an arm detect when limits, can use delimit the position among needle example gently equalize linear, changeover of in order to detects fiducial, detect after the half, will portable measure an arm to be changed new fiducial on, continue to detect. After detecting, stock detected data folder. (4) after operation personnel collects data, stock data directly with portable measure an arm online in the hard disk inside computer. 1.

2 use data to generate batten portable the data that measures an arm to collect is much, how to guide much data the software that build a model, can use the following method: Above all, the Cheng that uses UG software to go up makes up the reads file feature function of room tool, make this many several foothold guide the software that build a model becomes a possibility more conveniently; Next, have collection data handling with Excel software, the place digit enters Excel software according to guiding, make documentation file, nod these a data to press early or late order sort, generate discharge a date, i, J, K is added in Excel file, in I, J, K below data can be entirely 0, the drop compositive file is put for suffixal.

The orderly file of MDA; Again, with the reads in a file interface of UG, read in generated documentation file, become these points the curve repeatedly by the curvilinear function of UG, the dot collect strings together batten, brilliance shedding to arrange; Finally, keep the file of UG additionally for suffixal for.

The file of Igs, if the graph is shown 1 times,batten builds a course [3] . Nextpage2 CATIA builds a model (1) what CATIA will save by UG is suffixal for.

The file of Igs is read in [4] . This spare parts is abnormity material, ply is bigger, existence of the spare parts when figuration rebounds. Will rebound horny design is 6 ° relatively reasonable, what floor level is in notice to rebound when building a model horn is nodded by rotate. (2) the place of every angle change of example, what make a part by the metabolic value of angle is sectional, the protruding muscle that omits the T form of the spare parts is worth, rise join of each sectional light suitable ground next. (3) each sectional play a part, the figuration face of the spare parts proposes the form after the model, use the face that the surface below draw-out spare parts forms, cut out hypostatic, form the lower mould of brake tool set, the ply that presses muscle of spare parts protruding lower mould one divides into two, form left, right lower mould, of the bolster plate among left, right pattern and an organic whole of make it of right lower mould (graph 2) . (4) the face that uses the surface on draw-out spare parts to form, cut out hypostatic, form the upper mould of brake tool set, the end face of upper mould opens handle giving a model to install groove, on, the two flank of lower mould open a guide plate to install groove, on, lower mould and spare parts combination are combination, install upper mould handle, bolt removing condole, guide plate, a whole brake tool set completed the plan that build a model. Process designing of 3 UG software (1) when machine program of work out of the software that use UG, the datum plane that when wanting to notice treatment gives example to check, uses [5] , treatment gives the installation slot of guide plate, and treatment gives side of termination fixed position. The origin of treatment is set in underside and example datum plane, termination to locate the face is handed in collect place, can assure to go up so, the relative position of lower mould face, but the exterior light of the mould when the work out is machined is suitable degree still remain to rise (graph 3) . (2) 2 lower mould part after rough machining, treatment lateral guide plate is slip when groove, must make those who give lower mould add up to a model to sell aperture, assure lower mould between model the relative position of the face is correct. The 4 built a model to just replace prefabricate profiling that detect and repair modular 3D, CNC Machining just replaced profiling to machine, because the production basis of the mould remains appearance model, examining make check by appearance example and example of special type angle, CNC Machining is similar treatment only, machine the similar rate of the mould with final take shape approximately, depend on the level that builds a model to the understanding of example and 3D, still depend on the demand that the handlers of CNC Machining presses program sheet strictly, seriously treatment gives the fixed position side of example, only such ability rise digital-to-analogue and example union. The crude green body that this kind of CNC Machining comes out and the position that need actually are very adjacent, reduced the labor intensity of benchwork, rose to make precision [6] . Last word the article is with spare parts of figuration of casing costal region exemple, the key told about brake tool set to digitlize design, made whole process, provided the practical experience of aspect of relevant mould figuration craft at the same time. The application in digitlizing a technology to be made in mould of figuration of aviation Ban gold has very important sense to raising aviation to make the economic benefits of the enterprise. CNC Milling