外文资料翻译---基于因特网的注塑模具智能设计系统-模具设计(编辑修改稿)

外文资料翻译---基于因特网的注塑模具智能设计系统-模具设计(编辑修改稿)内容摘要：

ng. Nowadays, it is mon to see that design, manufacturing and final assembly of a product are made in panies located in different parts of the world . The various parties concerned would need to share their expertise and experiences during the product development process . The current progress of Inter and information technologies can provide a solution to support and facilitate collaborative product developments among different geographic ally distributed enterprises . — 8 — Developing an Interbased intelligent mould design system as one of the module of a collaborative product development system can provide an effective and feasible tool to aid the collaborative development of injection moulds in the small and mediumsized enterprises to satisfy the stringent requirements of nowadays petitive global market . This paper presents an Interbased intelligent mould design system using Inter technology and knowledge based approach . The system can shorten the design cycle of injection mould and can effectively aid the design and development works of injection moulds in the small and medium sized enterprises to meet the increasing pressure of the current petitive world market . The rest of the paper is organized as follows. Section 2 gives a brief introducion of injection mould design. Section 3 introduces earlier research works on mould design and related fields. The architecture of the Interbased mould design system is present ed in section 4. The knowledgebased part of the mould design system is described in section 5. Section 6 discusses the development of the system. A practical design case is demonstrated in section 7. Conclusion is made in section 8. 2. Injection mould design Fig. 1. The general procedure of mould design[1]. The basic features of an injection mould consist of cavity number and layout , feed system, cooling system, ejection system and mould construction. Fig. 1 shows the general procedure of mould design[1]. It can be seen that how interrelated the conditions are and which boundary and secondary conditions have to — 9 — be met by the main functions. A mould design project normally starts with economic considerations , namely the question of how many parts can and should be produced in one mould in one shot in order to meet the delivery date and other requirements. This is followed by consideration of the arrangements of the cavities in the mould frame, which might directly include thoughts on the ease of ejection and subsequentl , the connection between mouldings and runners and part quality (number , position and shape of gates). The feed system acmodates the molten plastic material ing from the injection nozzle of the moulding machine and distributes it into each cavity. To remove the heat from the moulding, it is necessary to provide the mould with a cooling system. After the moulding has solidified and cooled down, it has to be removed from the mould by the ejection system. Mould is normally constructed by stacking several metal plates to form a rigid body . It has to house various mould ponents in correct positions for the proper functioning of the mould. Mould construction normally involves the selection of mould bases an d standard mould parts . For plicated plastic parts, some other mechanisms such as slides, unscrewing device, etc., might also be involved in the whole mould structure. 3. Related research A number of research activities have been carried out on mould design and its related field over the years using puter aided techniques. These research activities range from studying specific areas of mould design to investigating mould design as a whole integrated system. They can broadly be classified into three areas: the functional and initial mould designs。 the algorithms to automate mould generation。 and system development of mould design. Hui and Tan [2] presented a heuristic search app roach based on sweep operations to develop automated mould design systems for determining parting direction, parting line, side core, etc. Huang et al. [3] used solid modelling techniques to build mould plates and library of standard mould ponents. Chen an d Liu [4] have developed a cost model, which depicts the relationships between cost factors and pr。