The current situation of CAD/CAM technology

The operating system photograph such as X, Windows95/98 is very older than having rise. So, personal computer platform created absolutely good condition to popularize CAD application. On this foundation, CAD/CAM software firm spread out new round competition. On one hand the software of the famous CAD/CAM on workstation (like UG, CATIA) complete function ground transplants personal computer platform, make personal computer realized the processing capability of workstation environment completely quitsly; On the other hand CAD/CAM software broke the fetters and handcuffs of original Unix environment, extend in the round on Windows platform. Pentium above processor and NT environment perhaps been becominging the mainstream platform that CAD/CAM software moves and uses. Is trends of current CAD/CAM software as follows: ? The characteristic that τ of Tuo of ⒑ of  of  of Chi of  of ⒒ of dream of arc ⑹ A Chinese-style unlined garment teachs ㄎ ⒒  to teach ǖ Mo AD/CAM software frowzily is: 1.

Using Windows environment to use WindowsNT operating system is the common characteristic of the software of personal computer CAD/CAM that new generation rolls out. Now, the PC had been had with in the actual strength that cheap workstation competes, plus its the price is low, make popularize CAD application to become a possibility. The software of new generation CAD/CAM on Windows platform basically uses typical Windows interface and operation standard, mix as a result of DDE at the same time the wide application of OLE technology, these CAD/CAM software can undertake with the other software of Windows platform dynamic data is exchanged, also can fall in the premise that does not exit CAD/CAM software built-in (or link) the object of other application process. 2.

Using COM technology COM(ComponentObjectModel) is the introduces to improve software stability and development efficiency vital technology on international. The CAD/CAM software of the Windows platform that nowadays rolls out used COM technology more or less. Through using off-the-peg component, software development business can avoid a lot of loaded down with trivial details in software development and difficult fundamental part, can set out from extremely high starting point thereby, shorten greatly CAD software appears on the market periodic, gain competitive advantage so easily. In the meantime, because use object-oriented technology, make can safeguard of software of personal computer CAD gender and but expansibility is able to increase. 3.

The software of CAD of platform of personal computer of advantage new generation that absorbs Unix platform software draws the essence of Unix workstation software adequately. Modelling of drive of such as parameter, feature, dynamic navigation, 2 dimension and three-dimensional and two-way the characteristic that standard of relevant, STEP and dynamic figure show it is good to wait for these comparison has been absorbed entirely by software of personal computer platform. 2, of PDM technology carry out the promotion as CAD technology, original technical management system is facing enormous challenge. Using a CAD previously, sheet of card of documentation of the of all kinds blueprint that involves in the design of the product, craft and management course, technology, craft, production, change odd, buying order, cost accounting sheet and material detailed list all by write artificially, examine and approve, classify, distribute and file, all data all undertake unity administrative through technical reference room. Since after using computer technology, afore-mentioned information that concern with the product turned an electron into information. The method that uses computer technology imitate simply to manage a material artificially so often cannot from go up at all solve advanced design to create the contradiction between method and backward data management. Want to resolve this contradiction, must use PDM technology. PDM (product data manages) it is the advanced computer management that is born from the height that runs CAD/CAM system systematic software. What it manages is a product the full data inside whole lifecycle. The product blueprint that project technology personnel designs according to market demand and written craft documentation are the one part in product data merely. PDM system besides wanting to manage afore-mentioned data, even right relevant market demand, analysis, design and in production process change the data such as service instruction of course, user and after service to undertake unity active management entirely. This shows, the products plan that the product message that PDM system runs will involve a company, craft, make, the branch such as management kimono Wu. Accordingly, of PDM system carry out have involve workload of wide, information to wait for a characteristic greatly. Executive PDM technology can implement collateral project, improve products plan efficiency, support overall quality government, implementation person, process, technology 3 person evenly. Accordingly it can bring huge profit for the enterprise. Of technology of CAD/CAM of PDM technology solid bestow carry out different, former the administrative pattern that those who adjust is an enterprise. The computer that is change of original artificial management pattern PDM manages mode, want the management with original give attention to two or morethings to be used to already, want to consider the requirement with compositive information again. Wait for the difference of the respect as a result of culture of industry technology environment, level of management, company, the PDM of every enterprise carries out a process won't identical. After only the overall objective of course of the computer environment to the enterprise, company and PDM had sufficient understanding, in the round analysis company is right the detailed demand of PDM product, ability singles out the PDM product that fits this business development most and solution. At present the PDM product of international mainstream has the IMAN of UG, the software such as the Metaphase of SDRC, domestic PDM product has Tsinghua to be the same as square PDM, PDM of Wuhan day analogy. 3, contemporary and compositive production system (CIMS) research and application Dr. Sefuhalindu of the United States was in 1973 " ComputerIntegratedManufacturing " the idea that CIM(ComputerIntegratedManufacturing) advances first in one book. Its connotation is computer of have the aid of, the enterprise in with make all sorts of concerned technologies systematically compositive rise, raise an enterprise to get used to the ability that the market competes then. This concept emphasized two aspects: (Each manufacturing segment of 1) enterprise are impartible those who cut, need integrates arrangement organization. (2) product production process is information is collected essentially, deliver, the process that machines processing. CIM is an advanced thought, but as a result of at that time the limitation of technical level, till 80 time first, this thought just is made the domain takes seriously and use. Come nearly more than 10 years, of the drive that competes in the market and relevant technology progress drive below, CIM is enriched ceaselessly in practice, perfect with development. Set out from this concept, experienced information the process is compositive, compositive study compositively with the enterprise and carry out, we offerred contemporary and compositive production system (ContemporaryIntegratedManufacturingSystem, the concept of CIMS) . Our country offerred 863/CIMS theme plan in March 1986, the comprehensive research that began pair of CIMS thereby and carry out. 863/CIMS theme research and the core of executive technology are contemporary and compositive make, among them compositive cent is 3 phase: Information the process is compositive, compositive (be like collateral project) with the enterprise compositive (if be made adroitly) . We part below brief introduction these 3 kinds are compositive. 1.

Information is compositive correct, high-speed is shared and exchange in information of enterprise interior implementation, it is the problem that improves industry technology and level of management to must be solved above all. Information is compositive the market competition ability to increasing a business is effective, but the method with up-to-date executive compositive information is more backward. This makes development cycle of project of enterprise CIMS application long, quality gets not easily assuring. So, information is compositive the main content that will remain enterprise informatization henceforth, also be executive such as the foundation of collateral project technology. The CIMS that becomes main content with information market in our country uses a project, still will be henceforth want to experience necessarily in process of most enterprise informatization. 2.

The procedure is compositive and traditional process of the design of serial exercise, development, in often can causing a product to develop a process, appear repeatedly, make long, cost adds product development cycle. If transform each serial processes in products plan more as far as possible,be collateral project, consider when the design below the producibility in working procedure, can assemble a gender, can decrease repeatedly, shorten development time. Collateral project is a kind of when be based on this one thought advanced production mode. 3.

Business market makes the market competition ability that enhances oneself, the enterprise must face the new situation that the whole world creates, make full use of production resource of the whole world, so that answer the market weller, more quickly, more economicly, this is the source that makes adroitly. The constituent form that makes adroitly is the product is decided in the light of some spy between the enterprise, build industry trends alliance (namely so called dummy company) . The ability that the enterprise forms an alliance this kind ceaselessly is an enterprise one of marks of nimble sex. At present the technology of CAD/CAM software CAD/CAM of domestic abroad popularity passes development of a few years, had taken period of large scale computer, small-sized machine, workstation, personal computer early or late, every times has popular at that time CAD/CAM software. Now, workstation and software of CAD/CAM of personal computer platform had held dominant position, and appeared a batch of more outstanding, more popular commercial software. We will introduce respectively below a few more domestic and international popular software. One, foreign software １ . Unigraphics(UG)UG is the fist product of UnigraphicsSolutions company. This company breaks through traditional CAD/CAM mode first, offer an overall product to build modular system for the user. In UG, draw a frame round of the entity that advantageous parameter is changed and variable changes technology and tradition, line and exterior function union are together, this one union is proved to be strong by practice, be used by place of firm of most CAD/CAM software. UG applies the earliest at company of aircraft of American wheat path. It is the software that waits for functional development to rise from modelling of process designing of 2 dimension plot, CNC Machining, curved surface. At the beginning of 90 time, UG of pitch on of company of American general motors regards the CAD/CAE/CAM/CIM dominant of entire company as the system, this promoted the development of UG further. UnigraphicsSolutions company and Intergraph company autograph were made an appointment with in October 1997, incorporated latter mechanical CAD product, unite the SOLIDEDGE software of personal computer edition Parasolid platform to go up. Formed to arrive from low end from this high end, the compositive system of more perfect company level CAD/CAE/CAM/PDM that holds Unix workstation edition and edition of WindowsNT personal computer concurrently. 2. SOLIDEDGESOLIDEDGE is true Windows software. It is not workstation software is moved curtly to Windows platform, make full use of however Windows is based on package object model (the advanced technique of COM) rescripts code. SOLIDEDGE and MicrosoftOffice are compatible, the OLE technology with Windows is compatible, this makes stylist people when using CAD system, can undertake Windows issues operation of forms for reporting statistics of word processing, electron, database to wait. SOLIDEDGE has friendly user interface, it uses a kind of interface technology that calls SmartRibbon, the user should command pushbutton by the next only, can see the content with this specific jussive and detailed move on SmartRibbon already, be in at the same time condition on what should clew user do next. SOLIDEDGE is to be based on system of CAD of mechanical design of new generation of parameter and diagnostic substance formative, it is developed technically to design staff, understand the hypostatic model system with the operation easily. 3. AutoCADAutoCAD is the dominant product of Autodesk company. Autodesk company is the world company of software of the 4th big PC. It is at present inside CAD/CAE/CAM industry domain, this company is to have global user to measure most software vendor, also be the is based on PC platform CAD with global the largest scale and animation and visible software company. The software product of Autodesk company already was applied at design of mechanical design, building, movie and TV to make widely, the great field such as the data development of video game development and Web net. AutoCAD is current software of the most popular 2 dimension plot, it has extensive user in domain of 2 dimension plot group. AutoCAD has powerful 2 dimension function, tag like plot, editor, thalweg and design scale, dimension and the function such as 2 development, have a share at the same time three-dimensional function. AutoCAD provides the tool that AutoLISP, ADS, ARX develops as 2. In a lot of actual application domains (be like mechanical, building, electron) in, a few software develop business to already developed the software that uses actually on the foundation of AutoCAD. Current, autodesk company has released AutoCAD2000, it is equivalent to AutoCADR15 edition. 4. MDTMDT is the system of three-dimensional and mechanical CAD that Autodesk company develops on PC platform. It is a foundation with three-dimensional design, collect design, analysis, make and a variety of functions such as documentation management are an organic whole; Offerred for the user from the solution that devises production unifinication. Characteristic of MDT main function is as follows: (１ ) the parameter that is based on a feature turns hypostatic model. User but very finish complex and three-dimensional hypostatic model conveniently, can undertake edit neatly and be modificationed to the model. (2) the curved surface modelling that is based on NURBS, can construct various complex curved surface, wait in order to if the mould is designed,be satisfied to just face the demand of complex curved surface. (3) can finish conveniently quite hundreds of very consummate of 1000 spare partses large assemble. (4) the plot that MDT offers relevant couplet and draft function, offer the two-way tie of complete model and plot. Of this software roll out get the general welcome of broad user. Up to now, sale of whole world accumulative total already amounted to 70 thousand, home already sold nearly 1000. As a result of this software and AutoCAD at the same time out Autodesk company, because this both and complete be in harmony is an organic whole, the user can realize the changeover of three-dimensional Xiang Erwei conveniently. MDT is AutoCAD user to three-dimensional upgrade the choice with offerred better. 5. SolidWorksSolidWorks is the is based on Windows mechanical design software that limited company of international giving birth to a letter rolls out. Company giving birth to a letter is a technology of specializationed information high speed serves a company, keep as synchronous as international CAD/CAE/CAM/PDM market all the time in information and technical respect. The CAD/CAE/CAM/PDM desktop that the " that this company advocates is based on Windows is compositive systematic " is it is platform with Windows, what be all sorts of application of core with SolidWorks is compositive, include management of data of structural analysis, motion analysis, project and CNC Machining to wait, offerred the solution that long for day and night for Chinese enterprise. SolidWorks is the new show that parameter of personal computer edition turns diagnostic modelling software, this software aims to offer user interface to personnel of broad mechanical design with the 1/4 ～ 1/5 of the corresponding software price of workstation edition more friendly, moving environment more the hypostatic model of in a popular style is economic function. SolidWorks is to be based on the complete parameter of Windows platform to convert diagnostic modelling software, it is OK very realize substance of complex three-dimensional spare parts conveniently modelling, complex assemble and make project plan. Graphical interface is friendly, user start is quick (graph 2) . This software can apply in the mechanical products plan that gives priority to with regular geometry body and manufacturing preparation work, its price moderate. 6. CimatronCimatronCAD/CAM system is the CAD/CAM/PDM product of Israel Cimatron company, it is the system that implements three-dimensional CAD/CAM complete function earlier on personal computer platform. This system offerred more agile user interface, plot of excellent three-dimensional model, project, comprehensive CNC Machining, interface of all sorts of general, special data and compositive the product data management that turn. CimatronCAD/CAM system since 80 time since entering the market, in the world mould manufacturing industry has welcome. In recent years, cimatron company grows to the field is created in the design, exert oneself increased a lot of function module that suit a design, every year new version is rolled out, growth of market sale share is very rapid. 1994 limited company of software of computer of Beijing space navigation (BACS) begins to popularize Cimatron software in home, undertook since 8 version Chinese change, in order to satisfy domestic company personnel of technology of disparate arrangement of ideas uses requirement. The user covers the field such as mechanical, railroad, scientific research, education, already sold many 200 at present, market prospect is valued. 7.

Pro/EngineerPro/Engineer system is company of American parameter technology (ParametricTechnologyCorporation, the product of abbreviation PTC) . The onefold database that PTC company puts forward, parameter is changed, the traditional idea that was based on completely feature, relevant concept to change mechanical CAD/CAE/CAM, this kind of brand-new concept already made the new standard of domain of current world mechanical CAD/CAE/CAM. The software of Pro/Engineer of product of the 3rd acting mechanical CAD/CAE/CAM that uses this concept to be developed can reach the design manufacturing whole process is compositive arrive one case, let all users can undertake the design of same product creates the job at the same time, implement so called collateral project namely. Pro/Engineer system is main the function is as follows: (The complete dependency with true 1) , anyplace modification metropolis reflects all and relevant place automatically. (2) has right government the subsequent course, ability that implements collateral project. (3) has powerful assembly function, can maintain design intent of the architect from beginning to end. (4) is used easily, can improve design efficiency greatly. Pro/Engineer system user interface is concise, notional clarity, accord with the design thought of engineering personnel and habit. Whole system is built go up in unified database, have complete and unified model. Pro/Engineer is built go up in workstation, the system is independent at hardware, facilitating transplanting. 8.

IDEASIDEAS is the CAD/CAM software that American SDRC company develops. This company is the well-known mechanical CAD/CAE/CAM company on international, high reputation is enjoyed in global limits, abroad a lot of well-known companies, be like the company such as Boeing, Suo Ni, SamSung, contemporary, Ford all is the big client of SDRC company and partner. IDEASMasterSeries5 was in the United States on June 20 this year rollout, caused wide attention. This are height compositive the CAD/CAE/CAM software system that change. It helps an engineer with extremely tall efficiency, finish in single number model from products plan, emulation analysis, test till the whole process of product research and development of CNC Machining. IDEAS is the large CAD/CAE/CAM software that user of whole world manufacturing industry uses extensively. IDEAS is in field of CAD/CAE unifinication technology is powerful all the time house world a list of names posted up head, software is embedded the analysis of such as structure, heating power analysis, advanced analysis function that optimizes analysis of design, wear to wait to improve product performance truly. SDRC also is the manufacturer of professional CAM software with the biggest whole world. IDEASCAMAND is the top class product of CAM industry. IDEASCAMAND can emulate the motion of cutting tool and machine tool conveniently, can conform to the principle of simplicity odd 2 axes, 2.

5 axes are machined with 7 axes 5 linkages means machines very complex workpiece surface, can undertake to CNC Machining process automata is mixed optimize. 2, domestic software 1.

CAD of Gao Hua of Gao Hua CAD is the CAD product that by Beijing limited company of Gao Hua computer rolls out. This company is You Qinghua university and Guangdong division dragon (look sound) the group combines a when found to be engaged in CAD/CAM/PDM/MIS technically of Wu of kimono of the research of compositive system, development, promotion, application, sale specialization hi-tech enterprise. Center of project of the software of company and national CAD that prop up is united in wedlock cheek by jowl, hold to the development road of the ethical software industry of own copyright, with the need of " user the need " that is us is acceptance, in commercialization of scientific research achievement direction stepped delectable one pace. Product of series of Gao Hua CAD includes the computer to assist plot to prop up systematic GHDrafting, mechanical design and mapping system GHMDS, craft to design data of GHGEMS of system of model of systematic GHCAPP, three-dimensional geometry, product to manage GHCAM of system of systematic GHPDMS and process designing of automatic numerical control. Among them GHMDS is the CAD/CAE/CAM compositive system that is based on parameter to change a design, parameter of the processing that it has scale of whole journey navigation, graph, list, total obligation changes design, parameter to change graph element to spell outfit, dimension to tag, the functional module such as editor of standard component library, image. GHGEMS5.

0 ever obtained CAD of own copyright of the 2nd whole nation to prop up software to evaluate the first. 2. The development of software of production engineer of drawing board of electron of CAXA of production engineer of CAXA electron drawing board and CAXAME and CAXAME and sale unit are limited company of software of Er of Beijing northing sea () of institute of software of Huazheng of university of former Beijing aerospace. This company is to be engaged in what CAD/CAE/CAM software and project serve specializationing company. CAXA electron drawing board is an efficient, convenient, intelligence the general Chinese that change designs plot software, can help design personnel undertake chart of part drawing, assembly drawing, craft, plane surrounds the design of outfit, suit all situations that need 2 dimension plot, make design personnel to be able to concentrate energy on design conception, throw drawing board thoroughly, satisfy the requirement that electron of fast design, plot, information turns contemporary company. CAXAME is the own development that faces mechanical manufacturing industry, software of CAD/CAM of face of three-dimensional and Chinese interface, complex form. CAXA produces an engineer 1.

0 edition were rolled out 1996, CAXAME2.

0 edition were released in March 1998, CAXAME2000 edition course of study already was released. 3. The is based on a feature parameter that GSCAD98GSCAD98 is development of limited company of engineering of information of days of Zhejiang is big electron changes model system. This company is hi-tech of state committee of science and technology the research of new and high technology that center of university of research development center, Zhejiang and CAD/CAM of Chinese spaceflight head office is in Hangzhou to be founded jointly, development and applied enterprise. System of development of software of volume of big day company, project application, information is compositive with the computer kind product sale is an organic whole, be Wu of kimono of the development that pursues CAD/CAPP/CAM project database and MIS/OA, application, sale specialization hi-tech company. GSCAD98 is one has the completely own copyright, three-dimensional CAD system that is based on platform of Windows95/NT of personal computer, Chinese. This software is to be in 75 " of national " are great tackle key problem on the base that reachs product of 863/CIMS theme end to develop fruit, consult the user interface style of SolidWorks and main function development finish. It implemented three-dimensional part design and assemble a design, the whole course that project attempt builds is associated, in the change that makes in either module, can make corresponding change automatically in other module. 4. Honeysuckle system honeysuckle (Lonicera) system is the is based on STEP standard CAD/CAM system that by Guangzhou red technical limited company develops. This system is theme of 863/CIMS of state committee of science and technology is during 95 " of " the newest research achievement that science and technology tackles key problem. This software basically applies at mechanical products plan to mix in making, it can realize a design / production unifinication and automation. This software starting point is high, with manufacturing industry ISO10303(STEP) of highest international standard is the basis that the system designs. This software uses object-oriented technology, use advanced substance to build model, parameter to change diagnostic modelling, 2 peace keeping the technical; that data of standard of three-dimensional unifinication, SDAI accesses interface has mechanical products plan, craft to plan design and CNC Machining process are generated automatically wait for functional; to still have a variety of criterion numeral to seize port at the same time, if the; such as STEP, DXF backs product data,manage (PDM) . Does at present the series product of honeysuckle system include: ?  glare bail defeats data of NCP of system of process designing of DA teaching ∕, numerical control, product to manage PDS, craft to design tool MPP. MDA(MechanicalDesignAssistant) of mechanical design platform is one of honeysuckle series software, it is 2 peace keeping three-dimensional unifinication designs a system. Current, MDA1.

7 edition already put in the market, MDA99 edition already also was released. "Honeysuckle "MDA takes the lead in realizing commercialization in home, issued strong challenge to software of foreign three-dimensional CAD. 5.

Opening eye CAD to open eye CAD is China in the has own copyright is based on personal computer platform CAD that manage is versed in mechanistic courtyard develops the university and drawing management software, it faces a project actual, the design plot train of thought of imitate person, the operation is handy, mechanical plot efficiency is gotten higher than AutoCAD much. CAD opening eye supports a variety of geometric constraint sort and much view at the same time drive, have the function that local parameter changes, can handle the be restrained too and owes an obligation case in the design. Those who opened eye CAD to realize CAD, CAPP, CAM is compositive, suit our country to design the habit of personnel, it is project of countrywide CAD application advocate promote one of products. Technology of our country CAD/CAM and the did not come way that the product develops pass old promotion, CAD technology has applied in the industry such as mechanical, electron, spaceflight, chemical industry, building widely. The design efficiency that applied CAD technology had to increase a business, optimize a design the plan, labor intensity that reduces technical staff, shorten the action such as the design cycle, standardization that strengthens a design. In recent years, the development of technology of our country CAD and application obtained great progress, the software outside dividing a lot of pair of countries undertook Chinese change and develop 2 times beyond, still was born to have the CAD system of own copyright not less, be like Gao Hua CAD, CAD opening eye, because these software are low-cost, accord with native national condition and standard, got welcome extensively so, gained larger and larger market share. But, no matter software of our country CAD/CAM is develop a standard from the product or from commercialization, commercialize degree to have not little difference with the developed country. Because foreign CAD/CAM software appears earlier, the time that develop and uses is longer also, it is more mature that so they develop, now basically already occupational international market. These foreign software companies use the dominant position of its technology and capital, begin to march to our country market energetically, current, a few outstanding software of foreign, wait like UG, SolidWorks, Pro/Engineer, CATIA, already occupational one share home market. So, foreground of software of our country CAD/CAM nots allow hopeful. But, we also should see our advantage clear, know native market for instance, offer technical support to go to the lavatory, low-cost wait. Below these premise, we want follow closely tendency of the day not only, dog international is newest and dynamic, observe all sorts of international standards, oneself distinct advantage is formed in international home, more want home of base oneself upon, combine national condition, face the need that domestic economy builds, development goes have him distinguishing feature, accord with the CAD/CAM software that the Chinese is used to. Computer technology change quickly, hardware replaces rate very fast. In this short four years, the computer experienced period of large scale computer, small-sized machine, workstation, personal computer respectively, every new era appeared new popular CAD/CAM software. In workstation times, UG, Pro/Engineer is workstation platform the person above average of three-dimensional CAD/CAM software, and in times of current personal computer, solidWorks is in lead position in the three-dimensional CAD/CAM software of WindowsNT platform. Because abroad develops CAD/CAM software to already had proper time and investment on Unix workstation platform, our country software lags behind than the developed country such as the United States in this respect a lot of. But CAD/CAM software is being developed on personal computer platform is a brand-new domain, our country and foreign starting point are similar, it is use VisualC++ , the tool such as OpenGL undertakes software is developed, on this foundation development goes advanced, the CAD/CAM software that accords with native user habit is possible still. CAD/CAM technology can apply in a lot of domains, it is the earliest that machinery is made the domain that also is technology of CAD/CAM of the widest application. As the development of CAD/CAM technology, the domain of building, electron, chemical industry also begins to use this technology, in these new application fields, the advantage of foreign software is not clear. So, software of our country CAD/CAM is returned in these respects can compete with the developed country, and the development as CAD/CAM technology application, more and more domains will use this technology, so, if can follow closely tendency of the day, apply at new field ceaselessly, software of so homebred CAD/CAM still has an outlook very much. Anyhow, we still have very long way to want, but always should remember, the ultimate goal that develops CAD/CAM software is applied CAD/CAM technology, design and make a standard what increase a business, so, CAD/CAM software wants a standard not only tall, have oneself distinguishing feature, more want to be able to be commercialized, call in from inside the market devoted, can develop software newlier ceaselessly according to the demand of the user thereby. CNC Milling CNC Machining