Be based on the research of products plan method of fictitious production technology

1 fictitious production intention the flying development as manufacturing industry technology, people also had to production intention brand-new, more comprehensive understanding. Making is to point to according to market demand, use tool of knowledge and skill, have the aid of, use the effective method, whole process that puts the market on end item of raw material translate into. Fictitious make (Vitrula Manufacturing VM) is to point to benefit to use computer model and the technology that emulate the design that will realize a product and production, it is support with network of IT, emulation technology, virtual reality technology and high-powered computer, high speed, go up in the computer group of groups are harmonious the job, program of the design that realizes a product, technology, treatment is made, the substaintial process that the product such as various process management and control creates function analysis, quality inspection and company. "Although fictitious production " is not actual make, but the substaintial process that comes true to be made actually however, it is before products plan or the physical implementation of production system, can come through the model imitate and beforehand the problem that the respect such as the configuration of appraise future product, function, function and machinability may exist, of sex of the look up before can be being made thereby decision-making and optimize executive plan, make production technology develops thereby all-around forecast phase. Fictitious making is to make the substaintial implementation on the computer actually, it is all sorts of computers those who assist a technology to face product complete lifecycle is compositive change apply integratedly. Create the function that has pair of material, information, the sources of energy to have transition actually, deliver the sources of energy such as person raw material, production, information, electric power namely, make a wants product and the news related to the product. Fictitious making is the " material " in will actual production and informatization of " of " the sources of energy, the information in be aimed at actual production system and the exchange of equal value that are realized to go up in information with actual production by the " material " of informatization and " of " the sources of energy, fictitious although did not make a real product,make, but the news that made related goods however and the information that production product wants. 1.

2 fictitious production classification is fictitious make involve already with the product development makes concerned activity, include again with the enterprise the organization runs concerned administrative activity. According to involves range and project activity type, can will fictitious is production cent 3 kinds of: ? What? of garden of hut of male Bin of male of Song of  of Pu of bail of fall from the sky is the fictitious production; of core to be core in order to control with production is fictitious make. 1) .

What be core in order to design is fictitious make. What be core in order to design is fictitious make will make news fetching design process, use emulate will optimize products plan, can be opposite in design phase thereby the spare parts is overall even undertake producibility is analysed, include to machine craft analysis, thermodynamic analysis, kinetic and kinematic analysis. The product that basically solves " to be designed is the problem of what kind of " , so that to the product each respect function undertakes,emulate with evaluate; 2) .

What be core in order to produce is fictitious make. What be core in order to produce is fictitious make produce person of emulation technology dissolve process model, will evaluate and optimize manufacturing process with this, plan of demand of the technology program that with low fare fast evaluation differs, resource, production plan. Basically solve " to organize the problem that produces whether reasonable " so, so that opposite produces a process to undertake emulation, undertake assessment; 3 to producing a plan individually) .

What be core in order to control is fictitious make. What be core in order to control is fictitious make in adding emulation skill control model and actual processing, implementation is based on emulated best control. Make full use of all sorts of controls appearance, measuring instrument function digitlization with the powerful will traditional function of the computer, undertake emulation to the production such as the optimizing of product line is organized and running an activity. Basically solve " how to control the problem of " . Nextpage 2 is fictitious production characteristic and make photograph comparing actually, fictitious make the characteristic that has its itself: 1) .

Fictitious sex. Fictitious making is not true production course, do not produce real product, do not waste real data and the sources of energy, it is the substaintial process; 2 that undertakes dynamic imitate be made in order to come true to true production course through digitlizing a method to come) .

Those who be based on digitlization model is compositive. Fictitious production process relies on a model, the model that involves has product model, process model, activity model and resource model. What go up in the computer through these digitlization models is compositive, the design that realizes pair of products, make, test, assemble wait for an operation, and revise; 3 what make pair of traditional archetypal prototype no longer repeatedly) .

Support is made adroitly. Because the information memory of whole process is inside the computer, can according to the change of user demand or market fast remodel is designed, cast life to produce quickly, the time that can reduce development new product substantially, improve quality, reduce cost; 4) .

Distributinging collaboration. Have the aid of at computer network, fictitious make can make cent is absent the different professional of different spot, different branch is right same product model works at the same time, mutual communication, implementation information is shared, reduce a large number of documentation to make the time that reachs its to deliver and error, make the product develops ground of quicker, high grade, low cost to answer; 5 of vicissitude of the market thereby) .

The high reliability of emulation result. Fictitious make even if detect through the emulation technology such as the test and verify of the model, desired effect the manufacturing program that the product that the design gives or formulate give, make the product is developed or manufacturing organization succeeds, so it can bona fide response is effective object. 3 fictitious the production crucial technology that prop up is fictitious all sorts of information that production have the aid of gets in fictitious environment, compositive and can run production environment integratedly, use improvement to be designed from the concept that assembles a product to each phase that trends emulates. Fictitious production technology involves an area very wide, if the environment forms the architecture of feature extraction of technology, process, compositive infrastructure, production character,occupy across of compositive, much discipline technology of technology of tool of function, decision-making support, interface, virtual reality, build model and emulation technology. Among them hind 3 are fictitious production core technology. 3.

Virtual reality of technology of 1 virtual reality (American Jaron Lanier offerred technology of Virtual Reality VR) first 1989, the connotation of this technology is wait for vision, hearing and touch directly by the computer a variety of information synthesis, and what clew gives a person is sensory, in the person all round create a three-dimensional fictitious environment. Rise person, real world and fictitious space union thereby, be in harmony is an organic whole, mutual a communication that has news and feedback. Virtual reality technology or the system that by it compose builds, the mainest feature feels in Yu Chen dip (Immersion) , alternant sex (Interaction) and conception sex (Imagination) . Virtual reality technology uses computer graph system integratedly, all sorts of indication and the interface equipment such as control, generate on the computer but interactive three-dimensional and fictitious environment. Virtual reality system (VRS) is comprised by the part such as the computational platform of technology of man-machine interface, software, fictitious implementation. Use VRS to be able to undertake dynamic imitate to real world, those who pass an user is alternant lose a person, revise fictitious environment in time by output, make the person produces be personally on the scene be enmeshed feeling. 3.

The 2 technologies that build a model are fictitious production system is the map that reality makes a system fall in fictitious environment, the model that is reality production system is changed, the abstraction of formalization and computerization is described and express. Of fictitious production system build a model to include to produce model, product model and craft model. (1) produces a model. But description of reduce static state and trends describe two aspects. Static description is pair of system productivity and the description that produce character, giving the possibility; that gives products plan plan dynamic description is the description of dynamic to the system behavior and condition, forecast the model of product of whole process; (2) that the product produces then. Product model is production process in, the gather of model of of all kinds and hypostatic object. To fictitious production system, the overall activity in wanting to make the product carries out a process is compositive, must have complete product model, namely the information that product model describes contains the static information such as feature of figure of product structure, product already, still include can undertake interfering checking, each function analyses the dynamic information that waits for a respect, it is the technology of model; (3) that in can extracting a product to carry out through the method such as map, abstraction, each activity place wants all information model. craft parameter and the products plan attribute that affect production function connection rises, produce the interact between model and product model in order to react. Must craft model have: of the following function? Attack official of ⑼ of  of Biao of Zhan of garden of rancorring ⒅ of a bitter edible plant of  of enthalpy of garden of ⒅ of Jin of brandish of Zhan of Qian  ひ quite P ostrich unplugs P of  of  of imprison Che fade lows about? 3.

3 emulation technologies are emulated even if applied computer is passed to complex actual system abstraction and simplify form systematic model, run this model on analytic foundation next, get fastening unity the statistical function of series thereby. Because copy is the research technique that is an object with systematic model really, have the aid of the fast operation ability at the computer, the production that in can be being produced actually with imitate of very short time, needs for a long time is periodic, can shorten consequently decision-making time, avoid the waste of capital, manpower and time, can repeat emulate, optimize executive plan. Is emulated basic measure: ? Core agrees low field ⑹ occupies   Wan to call out? of P of  ⑾ small line to emulate algorithmic * to build emulation model god to run emulation model to * outputs a result and be analysed certainly. The product development in fictitious production system involves a product to build imitate process of true, design to plan to emulate, behavior of actual production process is emulated, assemble a process to emulate, examine the process is emulated etc, so that undertake evaluating to designing a result, implementation design process is inchoate feedback, decrease or avoid products plan mistake. Although fictitious production technology obtained rapid development in the world in recent years,the current situation of 4 fictitious production technologies is analysed, but still lack the height from products plan whole process to begin at present fictitious production research, amass put oneself in another's position the following now respect. Nextpage 4.

1 be based on technology of compositive digitlization product model to still be in notional phase (the product information content in 1)CAD model is too low. CAD model is formed in the design process of the product, a lot of information (of blame geometry of geometry) need records amid, it is main data source. Be in fictitious in making, model of a lot of analysises needs to collect relevant information from inside CAD model. However current CAD model basically is the angle description product from geometrical substance, far cannot describe a product in the round, can offer the notional design that shares the CAD model that too little; (2) has news to cannot support a product. Of the product brand-new the design should pass craft of notional design, detailed design, product to plan to reach make a few processes, and the mechanism of product information put sb in a very important position with the good lack of detailed design; (3) that CAD model supports a product only. Because at present the product data switch between each application software basically is to pass appropriative data interface to come true, this kind of changeover also is the simple map of same question data, the automatic changeover that cannot realize the data between the model and derive, increased the complexity that fictitious production product develops undoubtedly. 4.

Tool of support of 2 products innovation is still inadequate (1) lacks innovation to design supportive system. Product innovation design is an omnibus science, need the support of new technology, new material, new technology. Fictitious production environment provided very good moving mechanism for innovation design, but the supportive system; (2) that still needs farther organization to develop innovation to design devoid general knowledge and the tool of fictitious production union. Knowledge can create innovatory product and new technology, product innovation pays attention to knowledge. But the complexity as a result of intellectual expression and organization and importance, how will its and fictitious production digitlization product tie rises is a difficult problem; (3) that remains to solve lack seesaw pattern external form to design technology and fictitious production compositive tool. Current, fictitious make be considered as the product innovation technology that has development perspective most. How to solve the seesaw pattern external form that designs fixed position of related goods whole, outward appearance to design a technology fetching to the product fictitious in making and to it organic ground is compositive rise to still require further research. 4.

3 products digitlize a technology (1) is based on product data to manage (the compositive problem of PDM) and other software. The core that the product digitlizes is the application of PDM technology, current, appeared the PDM software of all sorts of version, but devoid level, the market that created PDM software and other application system from this is debatable. Below fictitious environment, personnel of each major, departmental door is based on same product model to work in coordination, the product data set that fictitious product develops the compositive; (2) that must solve PDM and other application software weaves a system. Of the tectonic hierarchy that the product structure tree of the product figure prototype that means of fictitious product development makes wants to reflect products plan level already, product assemble order, mirror pull current Cheng even, production branch can count machine of model of written characters to undertake production according to the product directly. Accordingly, the system of product data organization that considers to suit fictitious product to develop is cogent and necessary; (3) and digitlization product model the organization of relevant data and management. The digital model that the digitlization of the product includes to build a product reachs the function target related its, include the result of structural analysis, kinematic analysis, kinetic analysis, thermodynamic analysis, be a product finalize the design provide academic basis, undertake transforming to product function. How to resolve the organization of data and government effectively, made effective ground suits fictitious the production heat that if study at present,needs. 4.

4 production processes emulate the method that build a model and technology to be based on the production process of physical model to emulate a technology to had gotten applied extensively, dan Jianmo method still has no revolutionary progress with the technology that build a model. (Tool of 1) fictitious treatment remains to perfect. At present already a lot of commercial software can undertake " machinability " is evaluated, but fictitious make the fictitious treatment that still needs to study development is many analyse a tool, if have the treatment of function of cutting force analysis,the process emulates the; (2) such as the system fictitious constructional fundamental theory studies. Fictitious make right fictitious the tolerancepublic errand analysis in matching and integrated technology still lack academic base, in the model generate and to standard of ISO public errand, form the supportive respect of tolerancepublic errand still exists a lot of problems, urgent need solves; (3) to assemble the further research that craft plans. Be based on fictitious ship-fitter at present art the studies presence is very large limitation of the program, be basically to point to: ? Another name for Taishan Mountain of dim glow of the setting sun of  of cut down of Zhui palpitate eggplant relatively horsefly natrium uncovers  of large of Pen of exhausted  Ba to wring anxious  to brag horsefly? lay particular stress on is calculated at geometry, of knowledge of project language meaning use remain to strengthen; to assemble sequential choice standard is not quite extensive with unified; (4) fictitious test technology studies. Fictitious test is the crucial segment that uses " fictitious product successfully to develop " technology, also be indispensable. After all link computerization, test and desired effect link become the main factor that affects efficiency. 5 last words by make actually to " fictitious production " transforms is the markeddest change that international manufacturing industry urges next happening in IT. Fictitious make the extensive research that waited to already got different rate like the United States, Germany, Japan in industrial developed country and application. Be in our country, the unit of scientific research education such as university of Tsinghua university, be disgusted with of Beijing aviation boat, Harbin Institute of Technology also had begun the research work of this one domain. The key way that fictitious production application studies current our country is process of the three-dimensional and fictitious design that is based on a product, treatment is emulated and the product is assembled emulate, how does research make the product with high reliability fictitious prototype, achieve the final performance that can forecast place to design a product with taller degree of confidence in products plan phase and producibility. The ceaseless deep support of the people as research is relevant technical development, fictitious make be sure to receive increasingly wide application. CNC Milling CNC Machining