外文翻譯---發(fā)動(dòng)機(jī)零件及其工作原理模具設(shè)計(jì)與制造-模具設(shè)計(jì)(完整版)
【正文】 r of plates with any size can be used in the mould. Detailing the functional ponents and adding the standard ponents plete the mould(). This all happens in 3D. Moreover, the mould system provides functions for the checking, modifying and detailing of the part. Already in this early stage, drawings and bill of materials can be created automatically. 共 9 頁(yè) 第 7 頁(yè) 3D Solid Model of Mould Through the use of 3D and the intelligence of the mould design system, typical 2D mistakes— such as a collision between cooling and ponents/cavities or the wrong position of a hole— can be eliminated at the beginning. At any stage a bill of materials and drawings can be created— allowing the material to be ordered on time and always having an actual document to discuss with the customer or a bid for a mould base manufacturer. The use of a special 3D mould design system can shorten development cycles, improve mould quality, enhance teamwork and free the designer from tedious routine work. The economical success, however, is highly dependent upon the organization of the workflow. The development cycles can be shortened only when organizational and personnel measures are taken. The part design, mould design, electric design and mould manufacturing departments have to consistently work together in a tight relationship. ComputerAided Manufacturing (CAM) of Mould One way to reduce the cost of manufacturing and reduce leadtime is by setting up a manufacturing system that uses equipment and personnel to their fullest potential. The foundation for this type of manufacturing system is the use of CAD data to help in making key process decisions that ultimately improve machining precision and reduce nonproductive time. This is called as puteraided manufacturing (CAM). [3] The objective of CAM is to produce, if possible, sections of a mould without intermediate steps by initiating machining operations from the puter workstation. With a good CAM system, automation does not just occur within individual features. Automation of machining processes also occurs between all of the features that make up a part, resulting in toolpath optimization. As you create features, the CAM system constructs a process plan for you. Operations are ordered based on a system analysis to reduce tool changes and the number of tools used. On the CAM side, the trend is toward newer technologies and processes such as micro milling to support the manufacturing of highprecision injection moulds with 共 9 頁(yè) 第 8 頁(yè) plex 3D structures and high surface qualities. CAM software will continue to add to the depth and breadth of the machining intelligence inherent in the software until the CNC programming process bees pletely automatic. This is especially true for advanced multifunction machine tools that require a more flexible bination of machining operations. CAM software will continue to automate more and more of manufacturing’s redundant wo
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