Author: Zhang Peng published: 2003.09.05 12:47:33 Source: China Computer Users - SEOUL PDM, as an important area of application of information technology, always in tepid situation. In this way, it is because it is mentioned that the PDM is really understanding that there are not many people who have a connotation - some people say that PDM is actually a knowledge management system. The purpose of using PDM is to accumulate data, knowledge in the process; also saying that PDM is A business system similar to the ERP, except for the application of the application of research and development. So what is PDM? What problems can be solved? What is the status of the enterprise information system? PDM (Product Data Management, Product Management) Technology, earliest emerged in the early 1980s. At that time, with the gradual maturity of CAD technology, CAX technology led to a large number of electronic figures, and the electronic figures often increase in the number. In such cases, how to effectively manage these documents will become a problem that the company must face. This requirement directly leads to the emergence of PDM prototype technology. Subsequently, in the application, PDM technology has gradually increased product structure management, workflow management and other technologies to form the first generation PDM. The first generation of PDM is functionally, including electronic drawing warehouses, data version control, and preliminary product structure management. On this basis, it will increase the function of product configuration management. With the intensification of enterprise competition, shorten product development time, reduce production costs have become the challenges faced by the company. In the face of such a challenge, there is a concept of virtual enterprises. The first generation of PDM focused on the management of design phase engineering information, the product design and manufacturing of the outset did not have a good solution, under this background, the concept of second generation product data management (PDM II) appeared. PDM II was originally proposed by Gartner Group, and after further development of companies such as IBM, Dassault Syetem and Enovia. PDM II has three core elements: Virtual Product Development Management (VPDM), traditional PDM and ERP systems. From a software function point of view, this era has a module such as workflow management and product life cycle, and the scope of management is extended to the enterprise level. As can be seen from PDM II, this era's PDM system implies this basic management idea: through process automation means, the technicians are placed in the water supply line developed by the product, and the product development is pursued through automated process. Low cost and high efficiency. Although the connotation and extension of the PDM continue to expand, its core context is also relatively clear. The famous consulting agency CIM Data is defined for PDM: PDM is a technique for managing all information related to product. Gartner Group's definition of PDM is: PDM is an auxiliary tool, which is used to construct a parallel collaboration environment from product planning to product implementation, and a mature PDM system enables all participating, communicating, and maintaining. Product design intentions freely share all heterogeneous data related to the product throughout the product life cycle, such as drawings and digital documents, CAD files and product structures. Read these two definitions carefully, it is not difficult to find that the PDM can be narrow, or it can be broad. From the narrow sense, PDM only manages information from the relevant fields of engineering design; from a broad sense, it can cover the overall life cycle process of maintenance, design, manufacturing, sales, and services throughout the enterprise. Information. What business problems can PDM solve the "skill" PDM? To answer this question, you first need to look at the problem that the company may exist in the full life cycle of the product.
From a large aspect, the problem facing the company is mainly in terms of development cycle and product costs: product development cycle is high, with the increasingly aggravated product of market competition, the risk of new product development is also The bigger. In this case, how to effectively shorten the product development cycle has become the challenge that the company must face. For a long time, product development has been using traditional serial design methods, attempting to retain product development serial mode, by repairing complement, is unable to effectively reduce the development cycle, effectively solving this problem must adopt new ideas - parallel projects. To implement parallel engineering generally need to help with PDM to effectively solve the following problems: ◆ Product information is inconsistent with traditional product development process, is a process of transferring and gradually forming between sectors. During this process, traditional manual transmission processes tend to lead to distortion of information, leading to the company a considerable price for this. For example, we have seen such a phenomenon in some companies: The design department has revised products, but the revised signal has problems in the process of passing, resulting in the procurement department and production sector or according to the original design structure. Purchasing and production products, while sales staff selling products are new products. The inconsistency between design, production, sales, the resulting result is the decline in customer satisfaction. ◆ The traceability of the product development process often has a large number of reference, version upgrade and other behaviors, and record these behaviors help to retroactive product development process, and improve the development process, or Afterwards, there will be a problem when there is a problem. In traditional development modes, companies are often difficult to record, manage these procedures, and data. ◆ Frequent design Change Any company will encounter changes in product development, which is determined by the characteristics of product development. The lack of necessary tools often leads to excessive changes in business and low efficiency of change. It eventually leads to elevation of the development cycle to raise the elevation. ◆ Designing a good effect is not good today to develop in the direction of product diversification. Enterprises must meet customers' personalized demand for customers to develop a variety of models. In this context, it can effectively design reuse will have a significant impact on development cycles and costs. In traditional design modes, companies are difficult to effectively manage standardized optimization design and provide convenient query tools for designers, eventually leading to enterprises to effectively apply existing design results to reduce development cycles and costs. ◆ Some of the business issues mentioned earlier in the development process are for companies that manage relative specifications. In fact, there are still many companies that have not yet reached the standard. In this case, the standardized product development process has become the primary topic of the company, and the implementation of PDM will help achieve this goal. Practice results show that the PDM can effectively solve the above problems in the case of implementation. Although different PDM systems are different in applications, their core is often comparative standards. In general, the PDM system has these core modules or features: * Document management * Workflow and lifecycle management * Product Structure and configuration Management * Change Management * Parts Classification Management * Project Management By implementation of these modules, PDM first can establish a product knowledge base in the full life cycle, effectively help product developers and managers to quickly find information, search information, Relevant personnel don't have to know where to find published design or other information, as long as you have licensed, you can get this information or data so that the relevant personnel will put more energy in creative value activities (according to statistics, designers It takes 30% to 70% of the time to get information on the information and accelerate product development. Second, the implementation of the PDM will increase the accuracy and consistency of design and manufacturing information.
As we mentioned earlier, the inconsistency of product information has become a business problem that makes the headache. The version management of the PDM system can make all the personnel who participate in the project work with the same data, and is the latest data, which avoids design repetition and inconsistency. Version management also guarantees that product development has strong traceability. In order to manage changes more effectively, PDM provides two ideas. First, it is necessary to effectively reduce the generation of changes by the implementation of the PDM. Second, in the case of change inevitable, the topic of the PDM is more effectively managed more effectively. Effective reduction in changes in the event is essentially through parallel projects, and through PDM can realize the sharing of product data. Through sharing mechanisms, more people participate in product design as soon as possible. For example, during product design, craftsmen, manufacturers can check in these unreviewed design data in time, and see the problems that may occur in subsequent sections, so that the mistakes are smashed in the cradle and solve problems with less cost. In the case where the change cannot be eliminated, the management module in the PDM provides the change request and the change instruction two parts. After discovering the problem, the next person issued a change request to the upstream person, and submitted the request to the management department for review, and the review will result in a change order, implementation change. This process can basically be implemented through the change process in the PDM, which combines with document management, product structure management, providing a complete change scheme to improve the efficiency of the change. For the designs Reuse issues mentioned above, parts and classification management in the PDM can divide the parts of the company into several classes according to similarity principles, respectively. Thereby implementing the components centered, organized related information, to facilitate retrieval, facilitating borrowing and reuse purposes. For domestic enterprises, PDM implementation has a more significant meaning, which is to assist in achieving the standardization of development processes. At present, most PDM systems provide flexible processes custom features. In the implementation of PDM, companies can rely on product development processes, curing the process, and implement the standardization of the development process. PDM can be strengthened by automatic data release and electronic trial program, so that those key tasks will not be ignored or forgotten. PDM "Put" Where is the PDM can help companies solve these business problems, for research and development types, PDM is no longer necessary, but how to achieve and in information in information. Today's issues are a comprehensive E-based issue. The company needs a concentrated, integrated data platform, so you need to consider the relationship between different application systems, let's take a look at corporate information. Mainstream system. Enterprise informationization is divided into four main business sectors, represented by four main IT information systems. They are: ERP (Enterprise Resource Planning System): Substance for enterprises, focusing on tangible assets, involving all aspects of production, sales, inventory, supply, finance, human resources, etc. SCM (Supply Chain Management System): Optimize the company's supply chain, allowing companies to better procure the manufacturing products and provide services needed to provide services, and serve their customers, involving suppliers, warehousing, transportation and sales channels. The link. CRM (Customer Relationship Management System): Supports product development, marketing and service processes from accessing and saving customer profiles to track customers, signles, after-sales service, record defects, feedback customer needs. PDM (Product Data Management System): Turn on intangible assets.
With the core of the company, in its full life cycle, across the entire enterprise and supply chain, synergistically support the generation, management, distribution, and use of product definition information, and make full use of the company's existing intellectual assets and promote innovative products. R & D. The status of PDM in the enterprise information architecture depends on the expectations of the company's PDM. In general, the goal of implementing PDM in business can be divided into two types. The big goal is to manage PDM as an integrated platform or integrated framework to manage product design, process, manufacturing, planning, sales, maintenance processes. The small objective is to focus on the design link and effectively manage the data generated by this link. From an integrated perspective, PDM tends to hang on other integrated frames. What goals should be achieved and related to their own characteristics. To see the status of product development in the corporate value chain, especially for those two large, middle "dumbbell" companies, the PDM is often a rational choice, and finally establish PDM-core products. Lifecycle management, forming a full life cycle management ecological chain. In the past, people have long noticed the system integration problem. However, more integrated work content is to achieve data transfer and conversion, and the transferred data is static instead of dynamic; the way to pass is hysteresis rather than real time. The transferred data is information and knowledge that is mechanically accumulated rather than refining. The most critical is that on the basis of the system, this information and knowledge are not regularly, and there is an organization that is smoothly flowing in a connotation more wide "ecosystem", increased value. PDM can give experience, knowledge, and timely feedback from the lower reaches of the product lifecycle (including from each system) to the upstream of the life cycle, in a higher starting point, support new product decisions, bringing more bigger Benefits. PDM's benefits A enterprise is a company that produces gear boxes. They found that due to the increasingly intensifying of domestic and international markets in recent years, it is urgent to use information-based methods to renovate enterprises and improve overall competitiveness. After repeated trade-offs and discussion, A enterprise locks the information targets in the following five aspects: ◆ Establish decision support system, improve the scientific and accuracy of business layer decision; ◆ Through the implementation of the CAX system, the products, tools and molds are carried out Digital design, simulation analysis, computer auxiliary process design, etc .; ◆ Comprehensive management of product design and process design; System, implement computer quality assurance system. According to this requirement, the company's system is shown in Figure 1.
Figure 1 A enterprise information system information implementation has brought considerable benefits to the company, including the following benefits: ◆ The product development cycle is shortened by about 50%, and after using the CAE system, the intensity of the general product is calculated by the general product. The original 1 ~ 2 days is reduced to 1 to 2 hours; use 2D and 3D CAD technology, group technology, and advanced product data management system (PDM), improve the speed of product design. The design cycle of the general gearbox is shortened from 1.5 to 2 months, and the design cycle of large gearboxes of the rolling mill is shortened by the original semi-year to 3 to 4 months. The product design cycle is reduced by 50%. ◆ Product cost is reduced by 2%, by using CAD, CAE, GT, PDM technology, improve product design quality, reduce the loss caused by design errors by about 200,000 yuan; optimize product design, reduce material consumption, reduce product costs per year 2 %, Annual cost savings about 3.6 million yuan. ◆ The market share is expanded, and the core competitiveness of the company is improved by implementing the information construction system, especially with CAD, CAE technology to make the product market share increase from 15% to 25%. The benefits of implementing PDM to the company are not only, but in fact, greater benefits are in management, and the management of the standardization and management level system not only simplifies business processes, standardizing business work, and improves. The degree of normalization of information is standardized and managed. At the same time, through information integration and sharing, the flow rate of information is improved, enabling enterprise management from extensive management to refine management, and the qualitative management becomes quantitative management. Enterprise management and decision makers can promptly master enough information to conduct correct decisions, improve the decision-making level of the company and the response speed of market changes. Improve design innovation capabilities In the CAD application, the factory has prepared typical product patterns, standardizing design standards, changing the status of most product patterns, greatly reduced product design errors, avoiding thus caused Recall, scrap, etc., improve the design quality of the product; at the same time through the simulation and analysis of CAE software, the weight of the box is reduced, the material is more reasonable, the noise of the gearbox is reduced, and the structure is more reasonable The life of the products and parts has also increased significantly. Again, using PDM, grouping techniques, standardizing the management, adding the reuse of parts, reducing the type of part, avoiding unnecessary repetition. Finally, the CAD / CAE design method improves the design of the design, especially the 3D design method, three-dimensional shape, simulation assembly, interference inspection, etc., has accelerated the development of new products, and improves the company's products. Innovative ability, enhanced product competitiveness. Source out http://industry.ccidnet.com/pub/Article/c786_a62693_p1.html
