CPDM reachs its key technology

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Summary: CPDm is enterprise of supportive broad sense cooperate with the complete solution that the complete to the product lifecycle that the product develops manages, the model to CPDm, connotation and its key technology undertook the article be analysed deep. Studied the implementation way of the lifecycle management of product data object. The crucial technology of CPDm is the complete product data model and its changeover, management to dynamic data and process and open mode can expand architecture. Keyword: Product data manages, in coordination the product defines government, the graph in product lifecycle management classifies date: TP391 document label piles up: A1 preface is below the form that the international of day of beneficial aggravate competes, the products plan of the enterprise began a revolution that is based on a network, business demand undertakes administrative to the complete lifecycle of the product, ask the whole world that digitlizes information is shared in real time. In August 2001, the PDM with famous industry sought advice from company of service business CIMdata to give out CPDm(collaborativeProductDefinitionmanagement, in coordination the product defines government) definition [1] . The essence of CPDm is to support those who cross an enterprise to work in coordination environment, supportive different compose uses the operation of transparent each other of system and different compose data, have open mode to be able to expand architecture, the perfect product lifecycle that offers development of much company efforts manages. CPDm got used to development of information age product to be developed independently by single company cooperate with to broad sense enterprise or ground of dummy company different the development, requirement that make and manages a product. CPDm is not onefold technology, go up in bases of a variety of the technology that prop up however, those who have a variety of software of the core function of traditional PDM is integrated. PDM technology appears at 80 time initial stage, through development of nearly 20 years, PDM can have come true include documentation management, lifecycle management, job to shed management, product construction management, view management, change management, client to change the function such as application, support with " standard enterprise function " and " dynamic enterprise " the new business information that the thought is a center analyses a method, can undertake business information establishs modular analysis and design. Be a delegate with the Smarteam of company of the Windchill of PTC company, EDS in coordination product information runs a system, got used to ground of different of enterprise of information age broad sense to cooperate with the requirement of the development, whole lifecycle that make and manages a product. The CPDm market growth of the whole world is at present rapid, according to CIMdata company newest forecast, the CPDm market of the whole world can maintain year of amplitude of about 36% before 2005, 13 billion dollar was reached 2005. During this, software income is occupied 40% , and the charge of the service occupies 60%[2] . CPDm of 2 CPDm model is CIMdata company put forward face 21 centuries in coordination the product defines government, it is the complete lifecycle that broad sense enterprise uses a variety of technologies and method to realize pair of whole products and the news of a kind of business that the element has administrative related its compositive frame. CPDm faces product complete lifecycle, include complete product to define information and relevant enterprise to solid goods and materials is produced and run a course [4] , offerred product engineering design, production to make, the unifinication solution that supplies government. What CPDm supports a product is collateral develop in coordination, support the complete solution of broad sense enterprise, provide a consistent product, process and resource model for it. Make design engineer and the knowledge that produce an engineer to be able to share a product as early as possible, provided an innovation environment for company product development thereby. Graph 1 it is the CPDm model that CIMdata company gives out. Graph the CPDm model of 1CIMdata company [3] is in this model, CPDm is to face the support of product complete lifecycle to cooperate with a frame of business affairs, lowermost layer is all sorts of technologies that support CPDm; The core function of CPDm is among; It is OK next compositive all sorts of application software to CPDm environment; The outerest in other complete company solution was made on each foundation. The model from CPDm can see, the lowermost layer of CPDm is the fundamental technology of a few kinds of keys that support CPDm, the core function of CPDm is among, the core function of core function and traditional PDM is consistent, basically be the development that manages a product and product structure. What compose builds on core function is all sorts of application software of CPDm environment, this is to form CPDm powerful function is necessary, what it needs is organic ground compositive the data that manages them with the function that uses all sorts of application software and file. It is OK to use CPDm well all sorts of resource of integrated company inside and outside, solve on each administrative levels of enterprise, product and project " information Gu island " problem, obtained information the process is compositive, compositive with the enterprise compositive, make the development process of the product implements collateral project, achieve compositive with each element purposes that optimize business activity, make iformation flow becomes the put oneself in another's position that company iformation flow, content shedding and value shed to show a form. CPDm of 3 CPDm crucial technology is those who face product complete lifecycle cooperate with business affairs platform, there are various visits and operation on this platform, CPDm must offer perfect port, and upper reaches, downstream and application software is sufficient and compositive, complete the information management of the definition of complete to the product lifecycle, a lot of technologies that need from this are the key of CPDm technology. 3.

1 complete product data model and its changeover cooperate with product definition development involves a lot of branches, included all at the business function of the whole lifecycle of product and process and resource applying, the demand of the information of different level product that must establish ability of complete product data model to satisfy a product to develop. Although unified data model will make data switch and it is exceeding and easy to share, but the unified data model that industry uses contented and all requirement and case very hard, and although same department is right product lifecycle is different the description of level sometimes also cannot compatible, the product that produces from this is whole the skimble-scamble sex of the information model of lifecycle, this is shared to information and exchange brought a trouble. Build and use a kind of neuter mechanism that does not rely on specific application system, realize the standardization of information model, realize lifecycle of different system, product the information exchange of different level is must. STEP(ISO10303) is an international standard about digitlization product data presentation and exchange, the purpose is the neuter mechanism that provides a kind not to rely on specific application system, use descriptive product the data in whole lifecycle, it is a kind of of the standardization that realizes information model at present very good choice. Can realize lifecycle of different system, product through STEP standard the information exchange of different level. Additional, in coordination product development often needs distributed visit, this needs the support of technology of distributed software package. Basically put in 3 kinds of distributed mechanisms at present, namely CORBA, COM/DCOM and Java, because return the distributed computation frame that did not unite, and should unite these a few kinds of standards at present impossible also, because this CPDm must be on certain level,supportive CORBA, COM/DCOM and Java/RMI reach the communication between its and issue of each other operation. At present CORBA is the mainstream of technology of distributed software package. But in the development that is based on Windows, have the aid of.

NET technology place offers, the inattentive coupling technology that is based on XML, combine COM+ technology, can distribute applied process logic easily the network, and need not whether are end of attend to service and client end belonged to same kind of structure, executive mechanism whether identical, interface is corresponding. 3.

The manages a product lifecycle of 2 pairs of dynamic data and process and process and resource be closely bound up, it is the dynamic technological process that person, application, data set becomes, the process can differentiate again for many subroutine, the management of opposite Cheng is so crucial. The product develops a process to must pass working shedding and process management to satisfy the need that collateral product develops in coordination. Working shedding and process management (Workflow/processmanagement) the primary process that uses definition and control data manipulation, when main management undertakes operating to data when the user, between the person, the data flow direction between the activity, and necessary general affairs and data activity dog inside the lifecycle in a project. Dog and alter a course of control product, in order to enhance the automation rate of product development process. The job flows and process management dominates flow of data management, work and change market at an organic whole, make through coordinating an enterprise automatically to organize the task and process, information of the product develop in coordination finish smoothly. Working shedding and process management are project management is necessary, at present project management becomes more and more serious in the enterprise, but in traditional PDM, what project management considers is very few. Want to shed management to realize project management through the job, still put in certain difficulty, because the job sheds management,module basically is right the business technological process that project set faces in the enterprise undertakes coordinate and be controllinged, but do not provide the measure such as examination of effective plan monitoring, achievement commonly, control the progress of the project very hard. Additionally the job flows and the category of process management and project management also is put in very big difference. In addition, in the development process of the product, the formation of data the process is trends. Product data wants experience to arrive from generation perfect, revise, release, freeze etc a series of evolve into a process, this one process is the lifecycle of data object. The lifecycle of the lifecycle of product data object and product is a meaning. Product data object includes in the change in its lifecycle: Of data content change, the change of data condition, the shift of memory position, user logarithm occupies the change that operates attributive to wait. Through studying the lifecycle of product data object, can dog well and control the change of product data object. The lifecycle of product data object is the gather of lifecycle condition object and condition changes object. The status change of data object is conditional, below certain regulation, the condition of the object matures gradually. General type of every kinds of data is corresponding oneself lifecycle, the enterprise can be mixed according to the type of data object the data that the pattern plate of regular use lifecycle of the enterprise manages all sorts of types. 3.

3 open mode can expand the function of the core module of architecture CPDm already very mature, the powerful function of CPDm depends on outer the function of application software. CPDm can pass compositive and special tool for instance project management, project is changed, supplier and configuration management, component management strengthen pair of products manage in coordination, achieve what support crosses an enterprise to work in coordination environmental purpose. CPDm frame must be not had seam compositive these applied tools and module, supportive different compose uses the operation of transparent each other of system and different compose data. Do not have CAx application tool meet embedding also is current in the unifinication solution of CPDm the enterprise is pressing of need. CPDm although function again powerful, module is again much, but the complexity of the news type that governs as a result of systematic place and model, and differ in thousands ways of the information of different company, function, to suit products plan and the complex and alterable need in production process, still also ask CPDm system has good open sex. PDM should be the basic model that a function can expand and frame, among them " structural member " but modular, can undertake assembly to satisfy different requirement thereby. The system builds systematic government model and information model through using OO method, provide the object-oriented tool that build a model and development tool, support 2 development of the user, those who make is true get used to business demand. 4 conclusion product defines administrative CPDm in coordination is a platform that can expand, it is the complete solution that product complete lifecycle manages, it is the frame with business compositive information and core, the information that can realize a product to be defined in coordination is compositive. CPDm key depends on how defining complete product to digitlize model and the communication between many applied systems and each other operation. At present the information communication between the applied system of CPDm platform and still exist in distributed computation mechanism obstacle, between different tool, swim up and down between link accomplish information adequately very hard still compositive. Because CPDm is commonly,be the job is in the environment of Internet/Intranet additionally, must consider the safe mechanism that data visits, enhance the security that network visit and data transmit. CNC Milling CNC Machining