One, after system of the problem application CAD that exists in CAD, CAPP application, CAPP, the rapid generation is many electron documentation on the computer, more such to large company, the integrality that how assures electronic documentation, consistency and validity are a when after using system of CAD, CAPP, be faced with big question. Major company does not have appropriative graph documentation to run a system commonly, just use share catalog structure to have simple government to electronic documentation, control without attributive, control without version, without hierarchy, without efficient and handy inquiry method, refer a mechanism without put in storage. It is difficult that this brings about electronic documentation to inquire, share degree not tall, data information delivers rate slow, utilization rate is low. The design BOM of a lot of enterprises, craft BOM cannot be generated automatically by system of CAD, CAPP, still exist to many handiwork works and repeat an input. Not only such, this kind of simple electronic documentation management returns the safe hidden trouble with very big presence. That is to say, major company cannot assure the integrality of electronic documentation, consistency and validity at present. We know, the greatest benefit of all of applied computer science department comes from at compositive and share. Although CAD, CAPP can improve efficiency of design, craft significantly, but if cannot come true compositive and share, so the beneficial result that they produce is finite still, this is current business an account that produces doubt to benefit of CAD, CAPP application. Because this CAD must provide the information that CAPP place needs, same, CAPP also must share data to produce a branch to offer, because design, craft is in the advanced position that the enterprise produces, the data that they generate is industry source information, because of this CAD/CAPP compositive and of CAD, CAPP and follow-up management information system compositive have particularly important sense, came true only compositive, ability forms continuous iformation flow, ability improves the applied beneficial result of CAD, CAPP further, ability improves the operation efficiency of the enterprise from whole. But, separate development rises these computers of CAD, CAPP assist a technology, the application of these technologies is the individual event application that isolates dispersedly more, their itself does not have mutual and compositive capacity, the automation of information is delivered between implementation system and cannot exchange, existence repeats input question 2 times many, apply actually in the enterprise in, formed the information Gu island of a lot of automation. The uses a company technology job of CAD, CAPP brought brand-new appearance, but its developed to expose the contradiction between advanced technical measure and backward administrative pattern again. As the comprehensive application of CAD, CAPP, electronic data is increasing, technical work kind is producing change sadly, the administrative pattern that is based on paper medium is losing its effectiveness slowly, as the elapse of time, be sure to cannot get used to the management of electronic data and computer work mode to ask. A lot of enterprises are now after system of executive CAD, CAPP, still the is based on paper medium management pattern of follow tradition, serious obstacle the farther play of benefit of application of system of CAD, CAPP. How to realize the active management of electronic documentation, how does information come true between system of CAD, CAPP compositive, data is shared, how does business government satisfy the requirement of computer work mode to already became enterprise informatization to develop the problem that must solve further, result from the product data of manufacturing industry manages (Product Data Manager) the technical development through nearly 20 years, solved afore-mentioned problems well, become the compositive platform of enterprise informatization. 2, PDM overview PDM is with software the technology is a foundation, it is core with the product, unifinication of the data related implementation product, process, resource is compositive administrative technology. The data information that concerns with the product includes any data that belong to a product, be like: File of image of documentation of structure of CAD/CAPP/CAM/CAE file, product, electron, scanning, database is waited a moment. The process that concerns with the product includes the task to allocate flow, examine and approve / extend flow, project changes relation of flow, orgnaization to wait, and each respects of product lifecycle. The occurrence of PDM technology basically is to solve the problem of information Gu island that after manufacturing industry was popularizing CAx unit technology, exists, the information that realizes an enterprise is compositive with the process compositive. PDM makes clear fixed position to create a company to face, it is administrative core with the product, it is the 3 gist white that runs message with data, process and resource. The product structure that PDM has two masterstroke of information management are a static state and dynamic products plan technological process, all news organizations and resource management spread out around products plan, this also is PDM system has do not run a system at other information, be like a management information system (system of MIS) , stock management (system of MRP) , project management (the crucial place of Project Management) . Regard 20 centuries end as occurrence technology, PDM accedes and developed the core idea of the technology such as CIM, below the guidance of systematic project idea, the idea that optimizes with whole has a description to process of products plan data and design, normative product lifecycle manages, carry a product consistency of data and can dog quality. The core idea of PDM is the process of orderly, design that designs data optimize and a large number of shares PDM system to involve primitive information of resource come from a lot of other application systems, be like CAD, CAPP, accordingly, its main feature is compositive sex, realize PDM and applied system to the data between is shared and communicate through perfect interface. Its support distributings, soft hardware platform, different network and different database differ below different compose environment. The system such as CAD, CAPP exchanges information through PDM, realized CAD, CAPP, CAM truly thereby without seam compositive. PDM is the administrative tool in digitlization environment, solve the administrative problem that the systematic application such as CAD, CAPP brings, like filestore, put in storage, classification, inquiry, share, use, management of construction of information extraction, product, configuration management, version management, security, use management of dynamic technological process to improve the business level of management below computer work mode, final implementation turns office without paper. PDM is the compositive platform of CAD/CAPP, it is information is delivered with communication bridge, PDM organic ground organizes the full data of the complete lifecycle related to the product, accordingly it is safeguarding the model of an overall situation of the product, and assured the uniqueness of information and consistency, this makes " send right message to right person with right kind in right time " become a possibility truly. The development of PDM technology can divide for the following 3 phase: The standardization phase of product of the PDM system that coordinates CAD tool, professional PDM and PDM. Already had a lot of famous PDM software domestic and internationally at present, be like: The KMPDM of the Product Manager of company of the Winchill of company of the IMAN of company of SDRC company Metaphase, EDS, PTC, IBM, company opening eye, they basically represented the top level that goes up domestic and internationally in PDM technology. Current PDM product uses distributed client computer mostly / server (Client/server) structure, the function such as the synchronism of the memory that the server carries responsible and public data, much user, client end basically is in charge of the government that seizes with the know exactly about sth of illicit of alternant, client of the user waiting. The general architecture of PDM system shows 1 times like the graph: Normal Align=center> pursues 1, the general architecture Normal Align=center>normal >PDM is OK reduce 3 kinds big: Normal > ? Data management -- inquiry of documentation classification management, product construction management, data, data processing; Normal > ? Process management -- working management, flow management, mark government; Normal > ? The product configures management -- component classification management, spare parts compose management. Normal > Normal > 3, executive PDM, compositive CAD/CAPP Normal > 1. PDM carries out point Normal > PDM carrying out is " 3 minutes of technologies, ten marks are occupied, extremely management " . Normal > PDM is in again carry out. PDM is one kind makes can technology, it provided a kind of organization, management and the pattern that use product data, mechanism and capability, every enterprise, its product, system, flow is used to even and culture is each are not identical, if do not combine the true state of affairs of the enterprise, those who break away from an enterprise is actual, PDM will become worthless. Accordingly, want to make PDM system produces effect in the enterprise truly, with respect to the process that must carry out through, make the runs ability and company particular case confluence of PDM rises, the PDM system that makes this him company. Normal > enterprise should have such thought knowledge, PDM is an administration project, is IT project not just. It involves business management field, of requirement company flow recombine and optimize, if new product development broke the serial job method that presses functional branch so, use collateral project method however. So it asks administrator, especially the participation of senior administrator. Normal > enterprise is before executive PDM system, must analyse a company in the round above all the demand to PDM, work out a detailed business demand manual, formulate evaluates supplier and the standard that pick PDM system. The system of the open sex that pays attention to a product and supplier carries out ability, namely the 2 technical support, development, ability that seek advice and grooms, must strengthen pair of employee at the same time groom. Normal > 2.
A PDM carries out plan Normal > is in enterprise PDM application, flow management is the biggest difficult point, executive risk is very big. Accordingly we put forward to carry out product data management, product to configure management mainly in enterprise PDM application, simplify the executive proposal of flow management. Normal > is in our executive plan, what PDM system should implement system of CAD, CAPP is compositive, with product structure the tree is a center, unite documentation of administrative CAD, CAPP and concerned product data, develop administrative function around product structure tree closely. Normal > implements plan according to ours, PDM system should realize such functional frame: Normal > project controller uses a product to configure a function to build product structure to cultivate a node in PDM system, it is according to designing a requirement below root node build component node, distribute component node responsibility engineer. Product configuration can be built by hand, also can use standard ministry package to build. The task allocates reach flow management with node accredit means, can inspect on structural tree, agile ground undertakes. Normal > responsibility engineer enters PDM system, indication task detailed list, can undertake below corresponding node the component is designed, build package node, distribute package node. Can undertake below package node package is designed, build a package node, spare parts node, undertake package, spare parts is designed raising. CAD software by PDM start in the system, the data file of generation is direct " hang " on the corresponding node that cultivates in the structure, fluctuate to be coordinated node data cross correlation, automatically. Normal > technology design undertakes in corresponding node, by software of CAPP of PDM system activation, the data file of generation also " hang " on the corresponding node that cultivates in the structure, carry structural tree, the design information such as BOM of the blueprint paper that can share CAD to arise directly, design. Normal > is in design process, the electronic documentation such as file of structural tree, blueprint, craft, calculated description, manual stores entirely in the server, go up to nod relevant couplet about the section with structural tree. The system should have the classification with powerful function to inquire a function, offer product structure to establish many view government, if devise view, craft view, standard component view, grafting part view, show by professional group, by the design personnel shows etc, the different documentation, documentation of different position uses different icon, different color to express. By node indication graphic representation turns plan information, can hint information of early-warning of fail to come out on time. Refer put in storage automatically through examining and approve the documentation of flow, the modification of documentation of put in storage has strict flow control, provide version management function, can save the different version of the file. The system should have strict attributive control, assure the integrality of data, consistency and validity. The person that have limits of authority can be examined at any time, share file of blueprint paper, craft, plan of understanding engineering design, task allocates circumstance. After blueprint design is finished, by the design BOM module generates spare parts detailed list, package detailed list, total detailed account automatically to wait in corresponding node, after craft card work out ends, schedule of material norm, tool, of all kinds list is generated automatically to wait in corresponding node by craft BOM module. Pass node, can find all information that concern with this node conveniently. Standard component library, material is built to supply list beforehand in the system, offer convenient and fast online inquiry, attune to use a function, offer use design function. Normal > design, craft is finished, generation a whole structure is cultivated, distinct on the tree the ground stores detailed list of card of all blueprint paper of a project or product, craft, design, craft detailed list, can include the product technology material such as calculated description, manual even, offer rich classification to inquire statistical function, this searchs what improve technical data significantly speed and utilization rate, technical information can be on the move to issue working procedure conveniently. Complete node data refers archives branch to manage, branch of attributive file case is all, archives branch undertakes file is registered, reach division check the number according to duplicating file medium (like CD) , on this foundation, the electron that realizes product technology documentation changes file. Normal > , CAPP applies BOM to develop a function, enter PDM system automatically, by PDM system basis BOM information makes product structure tree. Normal > some company shows 2 times like the graph: Normal Align=center> pursues 2, Normal > 4, last word Normal > application PDM is compositive CAD/CAPP, can improve CAD/CAPP application level and applied beneficial result, realize Technical Division informatization stage by stage, provide fountainhead information for enterprise informatization. At the same time of PDM system carry out also put in very great difficulty, must treat cautiously. We think to compare development to CAD application, use the company with higher level, to had been carried out or preparing to carry out the enterprise of CAPP system, can consider to implement PDM system, improve a system compositive level, advance enterprise informatization construction steadily. CNC Milling