试论大型汽车覆盖件模具制造调试的途径

针对汽车大型覆盖件零件的工艺特点，采用先进的模拟仿真技术、测量技术、调试技术、逆向工程技术，探索出了一条汽车大型覆盖件模具制造调试的途径。     

CAM技术在汽车覆盖件模具制造上的应用

阐述了在汽车覆盖件模具制造中采用 CAM 技术的必要性。介绍了第一汽车制造厂在模具 CAM 方面所解决的技术问题及所获得的成果,并对 CAM 技术应用于汽车覆盖件模具的加工制造提出了建议。     

汽车覆盖件模具流水线制造模式

模具加工工艺与技术是保证模具制造质量的重要手段。本优化了汽车覆盖件模具制造流程，提出了汽车覆盖件模具拉延、修边、冲孔、翻边、整形等模具流水线制造模式．论述了这种流水线制造模式“一个生产流程”的加工工艺，是汽车覆盖件模具生产企业生产方式的发展方向，对于控制质量、加强模具制造过程中计划的准确性、生产的均衡性、最大地发挥企业现有资源有一定的参考价值。     

虚拟制造在汽车覆盖件模具制造中的应用

主要讲述虚拟制造及其在汽车覆盖件模具制造中的实际应用。汽车的广泛使用使得汽车模具越来越重要，如何快速的制造高质量的汽车模具是当前人们关注的重点。探讨了虚拟制造技术在汽车模具制造中的重要性和优势，提出了虚拟制造技术是汽车模具开发最有潜力最实用最有效的技术之一。在简单介绍了虚拟制造的原理及其组成部分后，对其在汽车覆盖件模具制造中的应用给出了详细说明，重点介绍了在汽车覆盖件模具制造中如何使用虚拟制造技术，给出了应用的一般流程，并对其中的关键技术和难点技术给予了详细说明。最后在分析了虚拟制造技术目前在国内外的发展应用状况后，提出了我国应在实际应用方面加大研究力度。     

我国汽车覆盖件模具质量和技术含量进步明显

调查显示,在汽车覆盖件模具行业中,CAD／CAE技术已被广泛应用于模具设计和加工中,这对缩短模具制造周期、提高模具质擎具有显著作用。同时,数字化制造、逆向工程、并行工程、灵敏制造、精益生产等先进技术也已在汽车覆盖件模具生产中得到了应用,并产生了良好效果。     

电弧喷涂制造汽车覆盖件模具

以轿车前翼子板为例 ,阐述了电弧喷涂制作汽车覆盖件模具的工艺流程、电弧喷涂、石膏型制作、表面处理、背衬材料的浇注以及试模等关键技术。实践证明 ,电弧喷涂制造汽车覆盖件模具 ,成本为钢制模具的15 %～18 % ,制造周期为机械加工的25 % ,为产品开发、模具试制提供了技术保证     

汽车覆盖件模具的电弧喷涂快速制造工艺

通过实例介绍了汽车覆盖件模具电弧喷涂快速制造的工艺过程,阐述了制模过程中的材料和工艺参数的合理选择,并成功地制备出覆盖件凸凹模具,进行了实际应用。结果表明,该制模方法具有工艺简单、制作周期短、模具成本低、精度高等优点,为汽车覆盖件模具的快速制造提供了新的制造方法。     

汽车覆盖件模具的快速制造技术探析

介绍了汽车覆盖件模具快速制造技术的现状，对研究和开发该技术的对策进行了探析，总结出以RMT技术为基础、研究更先进的RMT新方法和新工艺、采用并行工程模式进行开发的对策。并创造性地提出了控制型金属雾化喷射成形与光整技术集成直接快速制造金属模具的方法，简要阐述了其原理，说明该方法是一种具有广阔应用前景的先进工艺方法。     

汽车覆盖件模具制造中的若干关键技术

介绍了汽车覆盖件模具制造中的若干关键技术,诸如,CAD、CAE、CAPP、CAM、三座标测量技术、逆向工程、并行工程等技术。     

汽车覆盖件模具设计制造基本规范

介绍了根据实际生产经验并结合引进模具技术总结出的 ,关于汽车覆盖件冲压模具设计制造的基本规范及应满足的技术要求     

有限元数值模拟在汽车覆盖件设计和制造中的应用

汽车覆盖件成形同时包含大变形、（粘）塑性、接触、摩擦等多种非线性因素耦合，利用有限元法在计算机上模拟出板材从坯件到成品的全过程并加以图形显示，进而研究影响成形的各种因素，可以为板材成形的设计和生产提供可靠的依据。本文主要介绍有限元数值模拟技术的现状，并讨论了其在汽车覆盖设计和制造上的应用。     

纳米技术在模具行业中发展与应用

通过分析新世纪模具制造业的趋势，指出结合信息技术、网络技术和先进制造技术是发展的必由之路，纳米技术的发展使结合先进纳米制造技术的纳米模具，以及产业化超精微加工成为可能。在阐述纳米技术发展的基础上给出了纳米技术的定义和纳米模具的两种解释，并就新型纳米模具－－碳纳米管CNT（Carbon Nano-Tube）和纳米模具的应用前景分别作了介绍。     

先进制造技术--现代光制造技术

综合评述了光制造技术的特征。光制造技术作为现代先进制造技术之一，在现代制造业中具有独特的优势。从原理上说，激光能适应任何材料的加工制造，尤其在一些特殊精度和要求、特别场合以及特种材料的加工制造方面起着无法替代的作用。通过对国外研究动向的分析可看出，光制造技术的发展趋势将重点定位在微结构、微刻蚀、微工具以及多功能性微技术、微工程的研究与开发上。     

拉伸模淬火后超硬加工工艺的研究与应用实例

对拉伸模淬火后的超硬加工工艺进行了分析,并以汽车覆盖件拉伸凸模为例,介绍了该零件的淬火后超硬加工工艺方案,展示并分析了后期检测数据。同时提出,此项工艺的应用,对提高模具质量、缩短制造周期等方面具有积极意义。     

基于云制造的模具协同制造模式探讨

通过对模具制造业现状的分析,将"云制造"引入模具行业,提出了一种由分布式模具制造资源、模具云制造服务平台和客户端组成的模具协同设计制造系统的体系架构.通过两个假设的案例,探讨了在这种新的模式下模具设计制造思路及其实施技术,并以案例分析进一步描述了其流程.基于云制造的模具协同制造模式对于提高制造资源及其设计加工制造能力的...     

汽车发动机排气歧管的内高压成形技术

研究了Y型三通管的内高压成形工艺过程,分析了成形过程中过渡区起皱及支管破裂等缺陷产生的原因,从而为实际生产中的Y型三通管内高压成形工艺设计提供了相关指导。利用所成形的Y型三通管制造了汽车发动机排气歧管样件,为内高压成形技术在汽车行业的推广应用奠定了理论与实验基础。     

汽车模具产业的未来潜力无限

介绍了模具在汽车制造业中的重要地位,国家"十二五"期间一系列规划为汽车模具的发展指明了方向,说明了汽车模具作为汽车零部件的装备,必将起到至关重要的核心作用,汽车模具产业的未来潜力无限。     

Additive manufacturing and foundry innovation

Additive manufacturing is expected to transform and upgrade the traditional foundry industry to realize the integrated manufacturing and rapid and low-cost development of high-performance components with complex shapes. The additive manufacturing technology commonly applied in casting mold preparation (fusible molds, sand molds/cores and ceramic cores) mainly includes selective laser sintering (SLS) and binder injection three-dimensional printing (3DP). In this work, the research status of SLS/3DP-casting processes on material preparation, equipment development, process optimization, simulation and application cases in aerospace, automotive and other fields were elaborated. Finally, the developing trends of the additive manufacturing technology in the future of foundry field are introduced, including multi-material sand molds (metal core included), ceramic core-shell integration and die-casting dies with conformal cooling runners.     

Design and management of manufacturing systems for production quality

Manufacturing companies are continuously facing the challenge of operating their manufacturing processes and systems in order to deliver the required production rates of high quality products, while minimizing the use of resources. Production quality is proposed in this paper as a new paradigm aiming at going beyond traditional six-sigma approaches. This new paradigm is extremely relevant in technology intensive and emerging strategic manufacturing sectors, such as aeronautics, automotive, energy, medical technology, micro-manufacturing, electronics and mechatronics. Traditional six-sigma techniques show strong limitations in highly changeable production contexts, characterized by small batch productions, customized, or even one-of-a-kind products, and in-line product inspections. Innovative and integrated quality, production logistics and maintenance design, management and control methods as well as advanced technological enablers have a key role to achieve the overall production quality goal. This paper revises problems, methods and tools to support this paradigm and highlights the main challenges and opportunities for manufacturing industries in this context.     

Advantages of low pressure carburising and high pressure gas quenching technology in manufacturing

Abstract

Over the last decade, vacuum carburising in combination with high pressure gas quenching (HPGQ) has become a preferred technology in gear industry mainly in Europe and North America. Driven by cost savings in manufacturing of gears and shafts, the heat treatment process has gone into the focus of the manufacturers. The potential of savings in heat treatment is huge because the new technology allows the integration into the manufacturing chain of gears and shafts. With vacuum heat treatment furnaces is it possible to implement this integration into manufacturing. The advantages of vacuum technology are in particular: the absence of surface oxidation, the cold wall technology, the gas quenching technology, the reduced logistics, flexible reaction on the needs of production and the control of distortion. In parallel to the development of the new heat treat process, a second point came into the focus of manufacturers: the choice of material. The industry recognised that by choosing a slightly higher alloyed material, significant savings in the entire manufacturing chain can be realised: smaller grinding stock, faster carburising cycles, gas quenching with control of distortion, and ultimately the reduction/elimination of grinding- and straightening operations. Vacuum furnaces are flexible in their reaction to the production requirements. Only with these types of heat treatment furnaces is it possible to switch them off after use and save immediately energy and costs. This benefit was essential for the industry in 2008/09 during the world economic crisis. In the past, the automotive industry in Europe and North America mostly ran on conventional pusher type furnaces which must be kept on operating temperature even if only 50% of installed production capacity is needed. The vacuum furnace of type ModulTherm is a multi-chamber system and each chamber can be switched On or Off according to the production plan which finally saves a huge amount of cost for energy. This paper presents the advantages of the vacuum carburising technology with high pressure gas quenching. The author will demonstrate with examples and comparisons the benefits of vacuum technology and the successfully integration of heat treatment in the manufacturing chain.