The car is small quantify technology and application

Automotive Lightweighting Can Be Achieved By Using Lightweight Materials And Lightweight Structures And Adopting Advanced Forming Technology.

The car is small quantified notional car is small quantifying is a whole idea, it is to show the car is in the travel security that keeps original, be able to bear or endure bump into the function such as gender, aseismatic sex and comfortable sex to be not reduced, and below the premise that car itself cost is not risen, target ground reduces the weight of car oneself. The car is small the advantage that quantifying is design, material and advanced treatment figuration technology is compositive, if pursue,1 is shown. Visible car is small quantifying is car function rises actually, weight is reduced, the structure is optimized, the project of a system that posture of face of reasonable all directions links the price. Graph 1 car is small quantify structural sketch map to the experiment makes clear, every reduce mass of vehicle 10% , oily bad news drops 6%~8% , discharge capacity drops 4% . The car is small at the same time quantify what raise a car directly to compare power, make the dynamical performance of the car rises. Accordingly, the car is small quantifying a technology is to drop one of oily bad news, main technique measure that decrease to discharge and promote security effectively. The car is small quantified core content is current the car is small quantify main content to include material light quantify, the design is light quantify, the structure is light the means that quantifies photograph union. Material is light quantify (1) pass spring namely replace data or light metal data will make automobile body light quantify, replacing data is with high strenth armor plate is replaced common armor plate of low carbon cold rolling, raise the intensity of component and stiffness, reduce plate thickness sectional perhaps dimension will reduce weight. High strenth armor plate presses figuration, roast sclerosis in basic and mechanical function, Leng Chong, fight sunken, solder, fatigue intensity, fight corrode and the respect such as exterior quality all excel is common armor plate of low carbon cold rolling. At present the high strenth steel of international mainstream model occupies the scale of automobile body to achieve 70% above generally already, the graph is shown 2 times for wood of bell of new generation Japan automobile body of car of abstruse develop miniature uses case of high strenth armor plate. In recent years car manufacturer of home also steel of phase-in excel in, surprise for example the applied scale in the excel in steel that its use DP340 on the model of new development already amounted to lucky company 45% , partial model is amounted to 50% . East wind Motor Corporation was used on commercial vehicle frame succumb steel of excel in of class of intensity 700 MPa replaces tensile strength to be material of 510 MPa course, optimize implementation girder to decrease heavy 38kg through the structure, strengthen bridge to decrease heavy 170kg, aggregate decrease heavy 208kg, cost is reduced 600 multivariate, and be in car box is small quantified a respect to use armor plate of 700MPa class high strenth to replace Q235 to produce standard car trunk, implementation decreases heavy 20%~37% . After the white automobile body of auspicious NL-1 model uses the data such as armor plate of high strenth armor plate, extra high strength, weight reduces 36kg. Graph automobile body of car of abstruse develop miniature uses wood of bell of Japan of 2 new generation circumstance of high strenth armor plate (2) the light simple stuff that light metal material is low density, high strenth, wait like alloy of aluminium alloy, magnesium alloy, titanium. Because light metal can reduce spare parts quality directly, become consequently the the directest, most effective light quantify measure. Nextpage graph shows the actual application that goes up in east wind car for magnesium alloy spare parts 3 times. Go up additionally the dashboard framework of a when steam group develops to its new model has light metal stuff light quantify, quality of framework of former steeliness dashboard is 5.

545kg, use magnesium alloy material to undertake brand-new optimize a design, combine advanced workmanship, quality of new magnesium alloy product is 1.

895kg, achieve reduce quality 65% . The 4G18 engine of research and development of auspicious Motor Corporation, among them gas cylinder body - crankcase was reduced by the weight after aluminium alloy of original instead of alloy cast iron 26.

2kg, the manifold that take energy of life was reduced by the weight after PA66 of aluminium alloy instead 2.

76kg, still exhaust manifold, air cylinder builds a fish trap, when the improvement of the material such as bracket of chain guard, crankshaft, installation, make the weight of whole engine assembly reduced 56kg. Graph the application of spare parts of 3 magnesium alloy on east wind engine (3) with model plastic component of Dai Gang can be reduced truckload quality, it is a car light quantified important light qualitative material, among them 75% plastic still can circulate recycle, can fall to feebleminded source is used up and promote environmental protection process considerably. Strange luck car uses aluminum-magnesium alloy and plastic data in great quantities in chassis system, wait to orgnaization of footplate bracket, shift gears use plastic material design, bracket of the stable lever after optimizing, hand brake makes decrease serious effect to achieve 50% above. The structure is light quantify automobile body structure light quantify namely the structure optimizes a design, optimize design method and technical measure advancedly through using namely, satisfying security of automobile body intensity, stiffness, mode, collision, fatigue life, NVH (oscillatory noise) , the performance demand of a lot of respect such as cost of producibility of automobile body structure, production, and below the premise of relevant law, code, standard, through optimizing parameter of automobile body structure, raise the utilization rate of material, purify component is redundant part, make component thin wall is changed again at the same time, in cavitation, miniaturization, compound change in order to reduce weight, implementation is light quantify. If the graph shows 4 times: Go up steam is general what 5 water chestnut and Hunan university combine own research and development is brand-new " the light of 5 water chestnut " series mini bus, use advanced finite yuan of analysis, reducing truckload below the premise of the multinomial function index such as stiffness, intensity, mode, collision, NVH, will come true through changing spare parts ply and spare parts structure light quantify a structure to optimize a design, decrease in all heavy 16.

71kg, managing cost, reduce oily cost. Of car structure light quantify design and optimize basically include: Nextpage pursues 4 structures are light the smooth series mini bus that quantifies the 5 water chestnut that optimize a design (1) will optimize design car structure through CAD, reduce automobile body weight and plate thickness, make component thin wall is changed, in cavitation, miniaturization and compound change achieve light quantify a purpose, use intensity of car of CAE technology computation and stiffness, ensure the performance that reduces reforming car. (2) development design bodywork and component more of hasten rationalize hollow model structure. Main avenue is used on the structure namely " with empty acting fact " , reprint the component that carry on one's shoulder gives priority to with bend or be being twisted to bearing namely, use hollow structure to replace sincere structure, optimize structural composition at the same time, those who make is more compact, can reduce weight already so, managing material, can make full use of again the intensity of material and stiffness. (3) in light a first-rate is found to combine an aspect in quantifying sex of as characteristic as material, craft, production lot, cost and other to restrict an element, those who achieve much material combination is light quantify a structure, emphasize right stuff be being used at proper place, jie assists a technology with computer of CAD ／ CAE, make a structure light quantify design and optimize blend in development earlier stage, shorten development cycle, reduce cost, ensured the car is small quantified efficiency and quality. Light quantify advanced shape technology (1) high strenth armor plate is current and main advanced shape production technology includes to heat up punch to shape, hydraulic pressure shapes, laser spells solder to shape, the high pressure inside tubal material shapes etc. Heat shapes the of all kinds intensity that the technology applies extensively on foreign car is as high as 1, the car around bumper of 500MPa, security personnel with collision reinforcement, for the car light quantify and raised security to make outstanding contribution. The basis concerns data account, technology of hot punch figuration was used to spare parts of major automobile body in the PassatB6 model that German masses Motor Corporation develops in its, its representative application hits pole for side frontier defence, around bumper is prevented bump into bridge, crossbeam and side bar, column of A, B, C increases increase with lumbar slideway etc. In recent years hot figuration steel also has the application of different level in the car of domestic new development, bicycle application heats up figuration spare parts to achieve more than 10 at most, achieve international basically already advanced level. Surprise for example the spare parts of hot punch figuration of lucky company new development has B column to strengthen board, before column of bumper beam, A strengthens canal, door to prevent bump into bridge to wait, make truckload security gets rising significantly. But the problem that returns existence cost as a result of application of hot figuration component, because this is in,low end applies the difficulty with still exist certain on economy car. (2) the light metal material such as aluminous, magnesium alloy is advanced shape production technology basically has Die Casting of figuration of half solid state, high vacuum, isothermal extruding, isotherm to forging etc, every kinds shape the function of accurate and efficient figuration that production technology emulates a design to improve light alloy greatly through the computer, can realize high accuracy, efficient accurate figuration to make, obtain expectant data to organize function and figuration quality. The car is small quantified technical method car is small quantify a technology carrying out is set project goal above all: The axle load of the smallest quality of the car, car distributings and trends and static stiffness, acoustics character and comfortable sex, passive security and contented code target, service life and life cycle. Be based on these targets, in carrying out Cheng of small amount chemical industry, specific adopt the following measure: (1) to the component optimize a design to basically include to bear the weight of bestly method, the structure that changes equably and optimized geometrical appearance. (2) in workmanship respect basically be to use laser to spell solder board, cupping to delay with the cast that quantifies hydraulic forming, gently, advanced spot welding and laser spell the join technology such as solder, and of aluminium alloy plank from riveting technology and flange join technology, hot figuration and hydraulic forming technology and boil press figuration technology; Solve the figuration of high strenth spare parts, reduce spare parts amount, reduce solder point of the structure, improve the performance of the spare parts. (3) in material technology respect, use high strenth steel and advanced high strength the application that the compound application technology of steel, aluminium alloy and magnesium alloy, different material, fiber enhances composite material, achieve development time finally the object that lowest of the shortest, cost and price of sex of white automobile body compare maximize. When Cheng of small amount chemical industry is carried out, computer simulation is the significant step that optimizes a design, can be used at method of geometrical appearance, to load optimize cast figuration sex and fatigue life, reduce trial-produce time and cut experiment number thereby; Can be opposite the passive security, load method when bumping and be out of shape undertake imitate, can optimize thereby select material and workmanship and use advanced figuration technology. Last word car is small quantify oily to car division, reduce discharge, improve health of industry of function, automobile to develop to have important sense, it is the way that technology of modern auto industry develops. Be opposite truckload light quantify a design while should consider high power output, low noise, low vibration and good drill accuse gender and high reliability integratedly. Through be being optimized to the design of car structure and appearance, the processing technique with advanced application and light quantify material to come true to fall truckloadly heavy. The car is small the design requirement that quantifies whole of the implementation below the premise that must controlling cost, realize dimensions to produce only, these are new-style light the benefit requirement that quantifies the manufacturing cost ability of material and its processing technique to accord with material to produce a business. Should raise Chinese car light quantify technical level, urgent affairs is compositive whole nation light quantify technical advantage, begin produce, learn, grind, with big combination. From the car light the strategic height that quantifies technical development sets out, the car that builds resource to share is small quantify platform of innovation of technical science and technology, advance produce, learn, grind, used cooperation and communication, stimulative car is small quantify technical achievement change; Make a car light quantify a technology main product and detect standard and the standard such as the method; The person with ability of relevant industry technology that builds Gao Shuiping fosters base and the service orgnaization that offer technical to seek advice to wait, chinese auto industry should be done do greatly take an active part in international competition by force, its are own bottleneck of technology of research and development, breakthrough and mastering core technology is the only way. CNC Milling CNC Machining