Gush bolus figuration and school form technology study high-energy ultrasonic progress
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14~1.
It is better that 1mm is in the remains of generation to press stress. Laser gush bolus and the biggest remains that supersonic gush bolus produces press stress layer for 1.
6mm left and right sides, bolus of numerical control gush is 1.
1mm. (2) the improved material appearance hardness with bolus of numerical control gush and supersonic gush apparent bolus, and the effective deepness of supersonic gush bolus is close friends at bolus of numerical control gush, 150 μ M handles appearance of distance of consist in of its peak value. And the effect that laser gush bolus produces is lesser, but oversight. (3) bolus of numerical control gush rose to exterior surface roughness 18% , laser gush bolus 7% , supersonic gush bolus 8% . The result makes clear, material classics ultrasonic has best integrated and mechanical property after gush bolus. French SONATS company began the research of technology of ultrasonic gush bolus 1996, development gave equipment of bolus of the first ultrasonic gush and its corresponding ultrasonic gush ball 1999 craft, already popularized application to wait for an industry at aerospace, shipbuilding and car at present. SONATS company is local to wing envelope be out of shape undertook orthopaedic is handled (if pursue,1 is shown) [7] . 2001, KSA company begins research and development equipment of bolus of gush of 7 axes numerical control, be in later main effect was produced in a lot of project such as the A380 that cooperates with airbus company, A318/A340. Develop up to now, had made the aircraft on international the advanced engineering technology of large panel figuration, but what as a result of plane wainscot at the same time the measure of object of this kind of figuration passes property of big, material is inhomogenous wait with treatment sclerosis cannot be forecasted accurately or online the element impact that calculate, the aviation structural member after digitlizing gush bolus figuration still needs to use convenient, agile ultrasonic gush bolus to have local figuration and school look, KSA company put forward to use figuration of ultrasonic gush bolus and school form technology. Company of Integrity Testing Laboratory of Nextpage United States and French SONATS company put forward to use manipulator arm to undertake counting accusing the technology of figuration of ultrasonic gush bolus at the same time. Graph the 2 manipulator arm numerical control that develop for Integrity TestLab company are supersonic equipment of gush bolus figuration, the numerical control that took the lead in pushing figuration of ultrasonic gush bolus and school form installation is changed. In branch of plane of Xi'an of ship aircraft Inc. and combination of Nanjing aerospace university began ultrasonic of wainscot of whole of C919 plane wing gush bolus figuration and research of test and verify of school form craft, exceed in 3~22mm undertake figuration of ultrasonic gush bolus and school form experiment on duralumin board, achieved satisfactory result, formed file of the company's applicable standard of craft of ultrasonic gush bolus. The amplitude of figuration of ultrasonic gush bolus, if the choice is undeserved,enclothe the craft parameter such as rate and gush bolus time, meet those who cause quality of surface of gush bolus workpiece become poor, excessive meeting causes gush bolus the fall of fatigue life, accordingly, need to undertake operation and choice craft parameter according to craft standard file. Crucial technology analyses figuration of supersonic gush bolus and school form technology to have very large development latent capacity, compare with photograph of foreign developed country, at present immanent equipment and relevant engineering technology study the country the respect just all started, need begins the research work of figuration of ultrasonic gush bolus and technology of school form key as soon as possible. (1) the optimization problem of efficiency of supersonic gush bolus. Process of ultrasonic gush bolus is complex, involve mechanistic, acoustics, vibration to learn, a lot of course such as electricity, want to gain efficiency of optimal gush bolus, should consider each gush bolus parameter integratedly to be opposite the influence of gush bolus efficiency. If ultrasonic generator frequency reachs working skill,diameter of rate, firing pin and amount, firing pin distributings time of bolus of amplitude of density, firing pin, gush, balanced set each gush bolus parameter, gaining efficiency of optimal gush bolus is a big question that deserves research of domestic and international scholar. (2) parameter of ultrasonic gush bolus and board makings figuration are measured / the effective control of the mensurable relation between corrective quantity and leftover stress field. Figuration quantity and corrective quantity are to evaluate the target with figuration of ultrasonic gush bolus and school form the most immediate effect, and plasticity deflection is decided by leftover stress field. Accordingly, need passes theoretical calculation, test research, test and finite the size that the method such as yuan of imitate builds parameter of ultrasonic gush bolus and leftover stress field and the corresponding relation that distributing, go further build leftover stress field and capacity of board makings figuration / the computational model of corrective quantity, of field of three-dimensional and leftover stress obtaining is the key problem that deserves research. (3) use finite of yuan of model when analytic software undertakes numeric imitate to process of supersonic gush bolus build accurately. Because gush bolus process is a certain quantity of firing pin,pound workpiece surface with time, workpiece surface gets of each firing pin dynamic action, the concussion direction that is the same as an each firing pin on tool head and wallop size differ likely, and these elements can differ level land affects appearance of workpiece surface form and mechanical performance, whole physics process is very so complex, build accurate workpiece very hard to get gush model. In addition, firing pin and material lead the material attribute below to be given very hard in tall meet an emergency, contact and attrition condition also hard accurate description, make what establish procedure of supersonic gush bolus accurately finite yuan of model is very difficult, the influence arrives finite yuan of simulative accuracy. (4) of figuration of ultrasonic gush bolus and method of program of school form technology and criterion build. Experiment through many foundation, gush bolus parameter is opposite research establish ultrasonic the influence of figuration and rule of school deformation form, be out of shape to differring diagnostic spare parts has the experiment of figuration and school form and test, gush bolus parameter is opposite analytic ultrasonic the influence of precision of quality of configuration of this area streamline, surface, figuration, leftover internal stress, fatigue life, the extraction that gets parameter of ultrasonic gush bolus is worth limits and applicable circumstance, form thereby complex be out of shape the design method of gush bolus figuration and school form craft reachs metallic panel ultrasonic of the feature criterion. Sum up and look into (1) figuration of ultrasonic gush bolus and school form are a kind of new-style green new technology of efficient gush bolus, abounded the plasticity figuration of board makings and school form technology, with traditional machinery figuration and photograph of school form technology are compared, its actuator realizes ability of body of school of automation control, board makings and limits deftly, easily quality of big, surface is good, wide applied perspective is had in aerospace domain. (2) figuration of supersonic gush bolus and school form technology can be used at solving at present the plane makes the wing of big ply, complex curved surface in building rectify body wainscot figuration of local gush bolus and be out of shape corrective problem, improve the production precision of plane wing wainscot and manufacturing efficiency significantly, reduce manufacturing cost. (3) union is present the research current situation of figuration of ultrasonic gush bolus and school form technology, technology of ultrasonic gush bolus should popularize a project to apply actually, still need to study figuration of ultrasonic gush bolus and school form craft carry out the research of figuration and school form effect to material deep, strengthen complex to large size, big ply be out of shape the application of the spare parts is explored, begin prestressing force ultrasonic gush bolus board makings figuration and school form technology. Rise complex figuration of board makings metabolic and school body ability and precision. Through be opposite the development of figuration of ultrasonic gush bolus and theory of school form technology and application studies, this new technology is sure to have wide applied perspective. CNC Milling CNC Machining