共查询到19条相似文献,搜索用时 53 毫秒
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基于RP技术的快速模具制造 总被引:2,自引:0,他引:2
介绍了快速原型制造(RP)技术的发展情况和几种基于RP技术的快速模具制造方法,并对这几种快速模具制造方法做了详细介绍。最后指出RP的应用将大大促进模具制造技术的进步,对提高产品质量、加速新产品的开发以及降低工装模具的费用等方面都有积极的意义。 相似文献
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快速成形及其在快速制模中的应用 总被引:6,自引:0,他引:6
快速成形(RP&M)作为一种新兴的先进制造技术,已成功地实现了快速原型制造,正向快速制模(RT)方向迅速发展。本文介绍了快速成形技术的现状及其在快速制模尤其是快速金属模具制造方面的应用,探讨了制约快速制模技术发展的关键问题和该技术的发展趋势。 相似文献
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Z. Shan Y. Yan R. Zhang Q. Lu L. Guan 《The International Journal of Advanced Manufacturing Technology》2003,21(7):469-475
As the race to launch a product successfully into the market increases in speed, the drive to reduce metal tooling lead time
will become more important. Time reduction for fabricating metal tools depends on fast, efficient, and flexible manufacturing
processes that dramatically reduce lead times while not sacrificing mechanical properties. A novel process of rapid tooling,
non-baking of ceramic moulding, was studied. It uses a casting mould made from ceramic slurry and rapid prototyping to form
a metal tool. It provides a quick, accurate, and relatively cost-effective route for producing metal parts or tools. The process
and key technologies are analysed in detail. The process has been used in the automotive, consumer products, casting, and
toy industries. Applications show that the total costs for new products can be reduced by as much as 40–60%, and lead times
can be reduced by 50–60%. The surface roughness is approximately Ra = 3.2, and it can be improved to better that Ra = 1.6 by polishing. The dimensional accuracy relative to size is about ±0.1 mm for dimensions less than 200 mm.
ID="A1"Correspondance and offprint requests to: Mr Z. Shan, The Centre for Laser Rapid Forming, Department of Mechanical Engineering, Tsinghua University, Beijing 100084,
PR China. E-mail: shanzhongde@mails.tsinghua.edu.cn 相似文献
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快速模具技术随着工业化生产的发展而产生,一直受到模具界的广泛重视。文中概括地介绍了快速模具技术在现代制造技术中的应用,对于快速模具技术的应用与发展,具有重要的现实意义。 相似文献
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快速模具制造及其应用第一讲快速模具制造的重要性及其新概念 总被引:2,自引:0,他引:2
介绍快速模具制造的新概念、重要性与现状,以及商品化的快速软模、快速过渡模和快速批量生产模的种类与寿命,讨论我国在快速模具制造方面存在的差距。 相似文献
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介绍了将快速模具技术应用于摩托车齿轮箱盖零件制造的过程,研究了纸基砂型铸造模具制作的技术方案和实施步骤,并对其中的一些技术关键进行了深入的探讨.结果表明,利用快速模具技术可以取代传统的木模制作工艺,此技术具有制作周期短、成本低、尺寸精度高的特点,适用于产品开发过程中小批量样件的快速制造. 相似文献
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F. E. H. Tay E. A. Haider 《The International Journal of Advanced Manufacturing Technology》2001,18(12):892-896
Electrodischarge machining (EDM) is a widely used process in the manufacturing of mould cavities for plastic products. EDM
work typically accounts for a large portion of overall production time. A major cost and time element of EDM is electrode
production, which can account for more than 50% of the total machining costs. A large complex electrode profile, which is
very difficult to produce through machining and is also time consuming, can be easily produced using the rapid prototyping
(RP) technique. The direct laser sintering of metal powders is a widely established RP process that can be employed for the
rapid production of EDM electrodes. In this study, the above-mentioned technique has been employed. The powder mixture used
in this process consists of copper, tin, nickel and phosphorus. An infra-red (IR) 200 W CO2 laser is used to sinter the powdered
metals layer-by-layer in order to form solid electrodes. Electroless copper and copper plating are then employed to improve
the surface finishing and the conductivity of the sintered electrode as it deposits a uniform thickness of metal onto the
substrate by chemical reaction, without building up at the edges and corners, and achieves unique physical characteristics.
The performance of the newly developed electrode is very similar to that of conventional copper electrodes. It is found that
integration of RP and electroless plating techniques can be a potential means of the rapid production of EDM electrodes at
low cost. 相似文献
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基于激光快速成型技术的快速模具CAD 总被引:4,自引:0,他引:4
针对基于激光快速成型技术的快速模具制造的特点,介绍了快速模具CAD技术的有关方面,提出了一个基于激光快速成型技术的快速模具设计系统的框架,以实现面向制造的快速模具的设计。 相似文献