PDM is the general management system of data of product of company of one bushing grain. PDM generalizes the product data height of the enterprise it is two kinds: Static product data and dynamic product data. Static data includes all sorts of spare partses, blueprint, documentation to wait, because be in PDM,cannot have an edition directly to these data, weigh them to do static product data so; Dynamic product data includes the evaluation course of blueprint, and information of all sorts of evaluation opinions of generation, annotate on, this kind of data generates in the organization of static data and evaluation process, because this calls dynamic product data. What problem did the enterprise encounter? Software changes a problem the grow in quantity as general part, emphasize the administration to designing a process, the finished cost of the product also can be reduced gradually, design quality gets rising. However, below the circumstance of current software, changing a problem is the problem that the enterprise headaches all the time. Below traditional modification control pattern, solve the unity of news source and the problem that change information to inform in time very hard thoroughly all the time, but after PDM is carried out, because PDM system has the only sex of data source, agile message, mail, task informs a function, so, brought a product to improve difficulty to the enterprise again. Quick visit and system of management of PDM of safe problem great majority designed a complex attributive system. The meeting in applying however discovers, technical personnel is right of information get need quickly, keep secret with data formed a pair of contradiction. Look from the point of view that gets information quickly, the attributive of PDM system opens better more, and the angle that keeps secret from data looks, the attributive of PDM system is more complex better. Also put in same question on design process control, on one hand, the design that administrative layer hopes to be able to control a product strictly changes a course, on the other hand, technical personnel needs the work as far as possible agile, convenient, this is a pair of contradiction. Produce issue with the user to avoid to be on these two problems, most PDM manufacturer gifts the flexibility with particular product, let an user decide the complex rate of the product when carry out according to oneself demand, accordingly the user wants to have sober knowledge when configuring product function, when executive PDM, attributive system and the complex level that cross programmed control to make want moderate. For example, logarithm occupies the company with confidential sex and process government higher demand, wait like war industry, aerospace, need to design complex safe system and process management. Type selecting of PDM of problem of PDM type selecting should the dimensions according to the enterprise, actual strength and management characteristic undertakes, should pass commonly " 3 look " process. See the maturity of the product, select mature product, can decrease those who carry out cannot foresight, reduce executive risk, prevent effectively to invest error; The actual strength of 2 research and development that see a company, should notice to inspect a supplier to be opposite the understanding degree of industry problem, inspect a supplier to whether master the core technology of PDM, inspect a supplier to have without sufficient development personnel; 3 see a company have without special executive team with executive method, some companies to reduce cost, cut expenditure, often do not set special executive team, let a product develop personnel to implement PDM project directly however, because the product develops personnel to basically pursue software development, although they have rich process designing technology, but often not be to understand very much to the actual condition of the enterprise, and the constituent capability with the executive very strong need of PDM project, groom ability, communication communication ability, need special executive team so. CNC MillingCNC Machining