Figuration of gold of a kind of affirmatory Ban the new method of semifinished product

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The semifinished product in be being designed in the light of craft of Ban gold figuration launchs an issue, use high polymer polymer the similar sex of mechanical when freezing temperature character and metal and its appearance memory are characteristic, put forward figuration of gold of a kind of affirmatory Ban the new method of semifinished product appearance -- physics is converse law. Gave out the academic basis of this method, undertook corresponding experiment test and verify. The result shows this method is feasible. This method is deep to be being pulled complexly figuration and enclothe complexly further research is more practical, be helpful for carrying high yield to character is measured and reduce cost. The design of craft of Ban gold figuration involves a lot of elements, like the ply of appearance of mould dimension, semifinished product, board makings, force that approach a limit, pull delay muscle to fight force, attrition, lubricant etc. Semifinished product appearance is one of design of technology of Ban gold figuration serious problem surely really. If semifinished product appearance is reasonable, be out of shape edge semifinished product distributings inhomogenous phenomenon can get clear improvement, figuration limit also can rise somewhat, can reduce dash forward ear height, reduce the surplus that cut a margin, managing material, and the craft decorating a border that can decrease to be able to discharge sequel even, reduced manufacturing cost greatly; On the other hand, reasonable semifinished product appearance can improve the meet an emergency of the material in figuration process to distributing, reduce the generation of blemish, improve the quality of the product. Producing actual in, the straight, inclined wall that has all sorts of complex figure is pulled deep with complex form enclothe. When making this kind of part with punch method, make to ensure a quality and reduce raw material to use up, the board material semifinished product that uses reasonable dimension and figure is very necessary. Decide reasonable semifinished product figure is not light, it is domestic and international scholar tries hard for a long time the task of exploratory study. Although a lot of scholars undertake exploration in this respect all the time, but because Ban gold figuration is a very complex process, the factor that affects figuration is too much, fail to get satisfactory result up to now consequently. Had offerred the means of very much affirmatory and reasonable semifinished product at present. Include experience among them law, geometrical map law, skid wire law, retrorse law, ideal figuration law, electric imitate law, finite yuan of law [1~6] . These methods are to be aimed at some kind Ban gold put forward on the foundation of certain hypothesis. Each have each advantage and inadequacy. The article put forward imitate of a kind of physics to determine Ban gold take shape the new method of semifinished product appearance, the definition is physics converse law. 1, physics is converse the theoretical foundation physics of the law is converse the law is shape of benefit appliance materiality the high polymer polymer of recoverable sex has imitating test. Use actual figuration pattern, give a part by imitate material preparation, undertake decorating a border to its next, recoverable character adjusts the figure that uses data the figuration after decorating a border undertake high temperature anneal spreads out, receive tablet of polymer of a planar high polymer, this flat outside predestined relationship appearance regards Ban gold as figuration semifinished product appearance. This method basically is the figure that uses imitate data the similar sex principle of recoverable sex and imitating test. (Material of the imitate when principle of 1) similar sex uses imitate material to undertake physics experiments and archetypal material must accord with similar theory, the mechanical and similar requirement of the requirement in Ban gold figuration [7, 8] has: The differentiate of sex of likeness of ① stress meet an emergency, the σ that expects when imitate material and former profile / σ S-E ε / when coincide of σ S curve, both σ - ε curve is completely similar, among them: σ is stress, σ S is succumb intensity, e is stretch model quantity, ε is meet an emergency. ② succumbs the similar criterion of criterion, namely imitate material and archetypal material should be subject to to succumb identically criterion. The similar criterion that ③ Poisson compares, namely imitate material and the Poisson that former profile expects should agree than metabolic rule. (The polymer of choice high polymer of 2) imitate material is material of a kind of double photograph, exist namely but frit and cannot frit reseau of key of two groups of elements. When room temperature, these two groups of reseau are solid state, load is assumed jointly by them, after heating, but liquid of frit reseau melt into, load is main by cannot frit reseau is assumed. Achieve when temperature when freezing temperature, load is full by cannot if begin to drop in temperature right now,frit reseau is assumed, criterion but frit reseau begins solidify to harden, will cannot because frit reseau assumes what load place happens to be out of shape solid comes down surely. Thermal drop comes room temperature, discharge goes load, this is out of shape voice still is saved to come down. According to the similar requirement of force, this is out of shape of process and metal play plasticity to be out of shape have similar sex. Because this chooses this kind to have corporeal state,the high polymer material of recoverable sex is imitate material, be like polycarbonate (PC) , organic glass (PMMA) , they have following characteristics: ① the σ of polycarbonate / σ ε - E ε / curve of σ ε relation and a lot of metal stuff that have sclerotic property are consistent, obedient Misses succumbs criterion. Polycarbonate and aluminous material are in ② the Poisson inside corresponding range of strain agrees more basically also than metabolic rule. ③ is become when strain is greater (5%~8%) , polycarbonate is in a kind of special high stretch status, the plasticity condition of similar metal uses this one condition to come to those who study a metal to play plasticity character commonly. (The mechanism of converse law chooses 3) physics to have the imitate stuff of mechanical and similar requirement with figuration material, undertake with imitate material physical figuration experiments. In figuration other craft condition should have similar sex with original shape material. Experiment through physical figuration, the figuration that gets an imitate data, undertake to its the edge is handled repairing, get and the figuration with same figure of actual part geometry. Chosen imitate material has appearance to remember gender and stress, meet an emergency to freeze a gender two character. Use appearance to remember a gender, the figuration that builds the course that gets in physical imitating test the edge undertake heating, high temperature anneal, make figuration regain board stuff. Can regard Ban gold as figuration with the appearance of the board makings after restoring of semifinished product develop form, undertake trying pressing. If cannot satisfactory, the semifinished product that can regard physics as the 2nd times imitating test it determines a basis, repeat afore-mentioned processes. So that get the semifinished product of reasonable satisfaction,develop form. 2, test facilities and experiment (1) test facilities to realize physics converse law determines Ban gold take shape the whole process that develops semifinished product, need is in freeze temperature to issue figuration of material of the imitate that finish, after that the figuration that high temperature anneal builds the course the edge the board makings appearance that extensive comes to. If pursue,designed according to this requirement device of an imitate experiment. This device is controallable the temperature rise when heating can maintain constant temperature. Inside mould park the chamber of a stove or furnace, can shift to an earlier date warm-up model deserves to have oriented board, in order to assure punch and sunken standard between even. Graph method of experiment of Nextpage(2) of diagram of 1 test facilities and test result for test and verify this method, use polycarbonate (PC) is made draft material, pull late pattern to regard an experiment as the mould with a kind, undertake check sex studies. Its concrete step and result are as follows: If the affirmatory semifinished product in estimating the test that develops semifinished product according to the appearance of workpiece above all pursues 2 are shown. mould and Mao Yulu inside chamber (the 1) that be like a graph, heat the chamber of a stove or furnace next, the curve that specific law shows 3 times according to the graph is controlled, when the chamber of a stove or furnace inside lukewarm to PC when freezing temperature, punch outside end uses tried power, make semifinished product is in punch is self-prossessed issue delay happening to be out of shape with the action of outside force, according to control curvilinear requirement holds time after figuration, stop those who make to heat after that cool gradually come down. Take shape is taken out when cold room temperature (the 4) that be like a graph. figuration undertake according to the requirement of the spare parts the edge is handled repairing, after getting handling into (the 5) that be like a graph. Take out the pattern from inside the chamber of a stove or furnace, figuration is gotten after decorating a border put within the chamber of a stove or furnace, according to the graph 6 shown patterns undertake heating, so that make figuration restore original board makings figure, test result is shown 7 times like the graph. Graph semifinished product of 2 initiative estimation pursues 3 moulds and semifinished product heat figuration graph the figuration before 4 long edges pursue the figuration after 5 long edges Nextpage pursues 6 appearance restore to heat the semifinished product form that after the semifinished product that craft graph gets after anneal of 7 high temperature uses high temperature anneal, receives serves as Ban, undertook helping deep test on the compressor of 2 × 105kg. Its are shown 8 times like the graph as a result. Graph 8 aluminium alloy (3) result analyses the semifinished product shape that with physics converse law determines, application expects at actual gold follower and figuration, one-time affirmatory semifinished product can satisfy basic requirement, showing this method is feasible. But figuration the likelihood still needs a few long edge. Its reason is very much, hairiness base decides medium a few hypothesis and craft condition and the case that not agree with actually, also metallic semifinished product is pulled deep when the element with the unreasonable position of semifinished product. Specific reason is as follows: Because what ① chooses imitate material and original shape material to have similar sex, but the difference between them can make of imitate material and metallic stuff pull difficult process to exist a few difference. The semifinished product with ② imitate initiative material estimates preparation according to the appearance of the spare parts, the appearance of semifinished product can not cause difference of existence of condition of the border when figuration together, produce little effect to the figuration of imitate material consequently. It also can is opposite semifinished product is decided really influential. ③ the semifinished product shape that according to physics converse law determines, preparation metal semifinished product, undertake pulling next deep. Among them figuration quality and semifinished product speed of the size of the position in the mould, force that approach a limit, figuration all matters. These also are to create metallic take shape the reason of the error. The anisotropy of ④ material itself does not have a consideration. 3, conclusion defined take shape of gold of a kind of affirmatory Ban the new method of semifinished product appearance) ) ) physics is converse law; Pass analysis and experiment test and verify, think this method is feasible, have proper project application perspective. As a result of the limitation of experiment condition. Deep to be being pulled complexly and enclothe wait for more complex figuration the experimental research with affirmatory semifinished product still remains at undertaking further. CNC Milling