快速成形及快速制模技术及其在企业的应用

一、快速成形技术 快速成形技术是将计算机辅助设计(CAD)、计算机辅助制造(CAM)、计算机数字控制(CNC)、精密伺服驱动和新材料等先进技术集于一体,依照计算机上构成的产品三维设计模型,分层制造得到产品的新兴技术。快速成形技术彻底摆脱了传统的“去除”加工     

快速成形技术的快速制模技术及最新发展

介绍了在快速原型制造基础上的快速制模技术方面的一些新的研究和应用成果，并指出了制模技术的最新发展趋势。     

LOM技术在快速制模中的应用

讨论利用LOM技术快速制造模具的工艺方案使用LOM生产的纸质制件作为母模来制作硅橡胶模具。由于硅橡胶具有良好的成形复制性和脱模性能,利用LOM原型制成的硅橡胶模具可用于精密铸造或小批量塑料制件的生产。     

快速成形技术的快速制模技术及最新发展

介绍了在快速原型制造基础上的快速制模技术方面的一些新的研究和应用成果,并指出了制模技术的最新发展趋势。     

基于随形技术的快速制模工艺优化软件研究

针对在使用快速成形RP方法制造硅槔胶模中,硅橡胶成本昂贵,原型件制造速度慢的缺点,提出一种在使用RP设备加工RP原型件的同时,制造与之相配套的型腔与填充块方法,论述了相应工艺优化软件的关键技术。该方法大幅度降低了硅橡胶消耗,提高了原型件的加工速度。     

快速成型制模技术的发展与应用

讨论近几年快速成形（RapidPrototyping）制模技术的发展与应用现状,对几种典型的RP制模技术及其技术制约因素进行分析,并就此提出几点对策。     

快速成形技术的展望

综述了快速成形技术的发展状况,特别是近两年在快速成形系统、材料和快速制模等方面的最新成就.在分析上述近况的基础上,讨论了快速成形技术的发展趋势.     

快速成型及快速制模技术

介绍快速成型技术的工艺过程，逆向工程数据处理流程，也介绍了快速制模技术的几种方法。     

快速成形及其在航空,航天领域的应用

介绍快速成形技术对现代制造业的重要作用，以及在航空、航天领域的应用效益     

基于RP原型的等离子喷涂快速制模技术

基于RP原型的等离子喷涂快速制模工艺是一种新型快速模具制造技术。主要结合不锈钢粉末喷涂模具制造过程，重点讨论了这种模具的结构、制造原理、方法和技术关键。     

Rapid Manufacture of Metal Tooling by Rapid Prototyping

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     

Rapid Prototyping and Tooling of Custom-Made Tracheobronchial Stents

Rapid prototyping (RP) and rapid tooling (RT) techniques can be applied to the field of medicine primarily because of their ability to produce customised profiles and geometries in relatively short lead times. In this paper, the process by which these techniques can be applied for the production of customised tracheobronchial stents for the purpose of maintaining patency in an occluded respiratory tract is described. A comparison of RP systems was carried out to establish the preferred RP method to produce the master model. The vacuum casting RT process was then used to produce the stent.     

基于RP技术的快速模具制造

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。     

Rapid Sheet Metal Manufacturing. Part 2: Direct Rapid Tooling

The traditional methods adopted for tool design and production in the sheet metal forming industry usually carry a high cost and long lead time resulting in cost justification problems for short production runs. Rapid tooling (RT) technology is capable of justifying the cost of tooling suitable for short production runs or design evaluation purposes. In Part 1 of this work, a new process termed rapid sheet metal manufacturing (RSMM) for the production of soft tooling suitable for prototyping, tool development, and short production runs was introduced. In addition, an indirect RT method employing rapid prototyping (RP), rapid soft tooling, and casting for the fabrication of non-ferrous tools was presented. The current work, Part 2, presents an alternative technique for RSMM whereby metal forming tools are fabricated directly from the RP system via selective laser sintering (SLS).     

Rapid Sheet Metal Manufacturing. Part 1: Indirect Rapid Tooling

Rapid sheet metal manufacturing (RSMM) is a closed loop process for making sheet metal products which uses advanced computer-aided techniques and computer-controlled machines to produce non-ferrous tooling directly or indirectly. The tooling would be suitable for short-run production or design evaluation of sheet metal products for which prototyping cost and lead time are greatly reduced. The key aspect of this closed-loop process is the method used to fabricate and modify the sheet metal forming tool. Various approaches are adopted in the preparation of the tooling for onward embossing on a sheet metal. The three indirect approaches use selective laser sintering (SLS), stereolithography (SLA), and high-speed computer numerical controlled (CNC) milling to build the masters from computer data models. The masters are used in the vacuum casting process to generate the non-ferrous tooling. Comparisons on quality, lead time and cost are presented.     

远程快速成形与模具制造服务中心——功能设计与实现技术

概述国外在远程快速成形制造方面的开发与应用现状;为实现基于互联网的远程快速成形与模具制造服务中心的功能,构造由在线商务处理器和在线工艺规划与管理器组成的功能模型;提出以ＤＨＴＭＬ语言及ＷＷＷ动态网页浏览器作为功能开发工具,实现远程快速成形与模具制造服务中心的技术方案。     

基于叠层实体制造技术的热敏打印机快速设计与制作

介绍叠层实体制造技术快速成型方法的基本原理和主要应用领域,并以上盖零件为例叙述热敏打印机原型的制作工艺过程,指出叠层实体制造技术在从结构设计评估、零部件间的装配检验到产品定型及样品生产的快速设计与制造模式中的作用。     

快速成形技术及其应用

介绍激光快速成形技术的基本原理、实现方式、技术特点。以发动机缸盖零件为例,阐述RP制作时需解决的几 项关键技术。     

快速原型制造技术的集成应用方法

快速原型制造技术在企业新产品开发中具有重要的作用。在介绍几种典型快速原形系统工作原理和应用特点的基础上,指出快速原型、ＮＣ加工和机械手加工原型技术集成的必要性并提出建立集成快速原型制造的模型,最后讨论快速原型技术的应用现状和前景。