Prop up CAD with PDM

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  • source:JUSTYN CNC Machining
The application of CAD system will make the enterprise has the beneficial result of big technical progress become reconciled. But introduce CAD only, make its regard plot as the tool only, it is wasteful, bring negative effect even. Because: (1)CAD is the system of disperse. The file form that supports as a result of its and the difference that use an environment, have information communication hard thereby, the result makes the information of the enterprise shares degree to reduce. (2) in view of traditional technique file it is paper medium, management is changed by hand, although use system of CAD ／ CAM,be opposite inevitably also the repeatability design of technical file. The durability that creates a design is poor and information delivers rate slow. (3) shows use large concern database, what realize processes of pair of CAD ／ CAM not easily is compositive with support, cannot come true of all kinds the information that is a foundation with CAM of ／ of CAD ／ CAPP is compositive. And should from go up at all solve afore-mentioned these problems, one of better idea use PDM system namely, namely PDM of have the aid of realizes CAX. 1, PDM system and interpret of PDM of 　 of its management function make product data government. Say wraparoundly, PDM is compositive run the information that concerns with the product, process and person and organization. It can realize the data in distributinging environment to share, environment of computer of the compose that it is different provided platform of a kind of compositive application, support the implementation of process of system of CAM of ／ of CAD ／ CAPP thereby. PDM is the technology of distributed data processing that the system issues with network environment to prop up, use architecture of client ／ server and the design method that face an object, realize the information management of product complete lifecycle, flow of cooperative control work and project make progress, one is built to run paralell inside enterprise limits change a product to develop synergic environment. The architecture of PDM system can refer to a graph 1. Graph 1 management is the function with PDM the mainest system, use PDM to basically can realize electronic reference room (Data Valut) and documentation management, product configuration management (management of flow of Product Configuration Mangement) , work, classification and retrieve function and project management. As the main demand to PDM, its manage functional incorporate to be in: 1.

The 1 target that in implementation PDM of 　 of field of electronic reference room and documentation management uses at documentation management can be original record: Design file, craft file, the model that its run can be graphical file, data file, text file already, also can be form file, it is multimedia file even. As a result of PDM transaction file or use the integrality that holds a file, namely alleged " bale " means; Or use extraction file data, namely alleged " break up " means, complete the changeover of pair of different pattern files and management thereby, finish the lifecycle in the product then inside, build a complete file that describes a boy or girl friend, retrieve at the inquiry of the user with benefit, support the work of CAM of ／ of CAD ／ CAPP. Electronic reference room is the core of PDM. When related to the product documentation is below PDM management, memory after different medium, the safety that ensures a file through attributive control and concentration are revised, must undertake through Fangke of electronic reference room. 1.

2 in implementation product product of configuration management field configures management is it is low layer support with electronic reference room, it is constituent core with material detailed list, rise all project data that defines end item and documentation connection, undertake safeguard and administrative to product object and its correlation. In order to make each branches are in the product shares unified product configuration inside whole lifecycle, the product of corresponding and different level is defined, make corresponding products plan view, assemble view and craft view to wait. 1.

3 in the job flow of work of flow management field manages (Workflow Of Process Management) basically is used at the modification to products plan, dog and control. Working flow runs the base that is project management. The PDM system that commercializes at present basically undertakes referring to the file with email means, examine and approve and extend. Notable is, although PDM and MRP are core with product structure, but MRP is with facing material and production the process is given priority to, and PDM more it is to face product and product configuration, both it is distinguishing. Generally speaking, PDM passes wants overall product information automatically to MRP not only, and generate in MRP wait for information to also can be united by PDM about service of the manufacturing plan that concerns with the product, material, maintenance attemper, manage and deliver. The market that implements PDM and MRP in the appropriate in the process that uses CAD has been become. 2, system of commercial PDM of PDM system 　 issues ability to carry out in network environment only, physical network is hardware. Commercial PDM system software is more, application is wider basically is the IMAN system of American EDS company, the Product-Manager system of the Optegra system of CV company, Metaphase system of SDRC company and IBM company. Same point depends on afore-mentioned PDM software using a function to change module to design, distinction basically is its emphasize particularly on different. Among them IMAN system and Optegra system function are more complete, former the application in home is a bit much. The connection of Metaphase system facilitating wide area newwork, the database function of Product-Manager system is more complete. 3, the development trend of PDM provides compositive application platform as environment of computer of the compose that it is different, the PDM of the implementation that supports process of system of CAM of ／ of CAD ／ CAPP thereby is current one of the most popular technologies on international. Its get applied increasingly generally in home while, yi Yue will change development to maturity more, main show is in: (1) give attention to two or morethings uses a system differently, the language that itself describes more standardization. (2) improves interface mode, with more sufficient use commerce database and Internet ／ Intranet resource (refer to graph 2) . Graph 2 with network interface.

Use 　 of database interface 　 with other business (3) application process encloses a technology, arrive in order to make can better land blends in existent applied process in new compositive framework. (What 4) realizes PDM and MRP is compositive, satisfy the need of MIS. The progress that technology of CAM of ／ of CAD ／ CAPP applies and deepened pair of PDM to raise requirement, the development of PDM will drive CAM of ／ of CAD ／ CAPP to the system gains ground and spread out further necessarily. CNC Milling CNC Machining