基于逆向工程技术的鼠标壳造型设计

逆向工程是一种全新设计与制造技术,采用逆向方法进行产品造型设计和模具开发,是缩短产品开发周期,提高产品质量,进而建立自己的设计制造体系的重要手段。本文以了鼠标壳配合件为例,介绍了逆向工程技术3D造型的一般步骤和方法     

基于逆向工程的眼镜框模具设计与制造

以眼镜框模型为例,利用激光扫描仪以Surfacer、Pro/Engineer、M astercam软件为平台,介绍基于逆向工程实现模具快速设计与制造的过程和方法,阐明了逆向工程技术应用的一般程序如数据获取及处理、外观造型设计、模具设计与制造的技巧及常见问题的解决方法。     

逆向工程技术在模具制造中的应用

逆向工程是一种全新设计与制造技术,采用逆向方法进行模具设计与制造,是缩短产品开发周期,提高产品质量,进而建立自己的设计制造体系的重要手段一本文简述了逆向工程技术的概念、工作过程及运用领域,着重对逆向工程在模具制造上的运用进行了介绍,并对其应用前景作了展望。     

逆向工程技术在汽车后视镜设计中的应用

介绍了逆向工程技术及其工作过程,包括数字化处理、三维建模、加工制造、测量检验等阶段,以汽车后视镜为例,重点介绍了其数字化处理和建模。     

基于逆向工程的紫砂茶壶模具的制作方法

目前紫砂茶壶模具制作仍然采用的是传统手工方法。该方法工人工作量大,效率低。逆向工程技术在很多领域已得到应用。将逆向工程技术应用到紫砂茶壶的模具制作中,为模具制作提供了一条先进、快速的制作方法。该方法也可为其它陶瓷艺术品模具制作所参考。     

基于RE/RP技术的儿童牙刷柄快速设计开发

以卡通牙刷柄为研究对象,阐述了逆向工程的概念。并且应用三维扫描仪结合逆向工程(RE)技术对该巧虎产品进行数据获取、数据处理、曲面重构与造型优化,利用Geomagic DesignX实现了卡通牙刷手柄的复杂曲面设计。最后应用快速成型技术对模型堆积制造,加工出样件。此过程验证了RE技术和快速成型(RP)技术在卡通牙刷手柄中的有效性与实用性,构建的模型有利于形象观察与修改,大大缩短了产品开发设计及制造周期。     

快速原型（RP）与逆向工程（RE）并行技术平台

快速原型技术使提供了一种直接并完全自动地把三维CAD模型转换为三维物理模型或零件的制造方法。具有突出的快速制造的优点。而逆向工程产品设计就是根据已经存在的产品模型，反向推出产品设计数据（包括设计图纸或数字模型）的过程。快速原型技术与逆向工程相结合，可作为快速开发新产品的先进工作平台。     

陶瓷石膏模具的快速成型系统研究

为了改变传统陶瓷石膏模具开发的落后现状,开发出了一套陶瓷石膏模具快速成型系统.整个系统以CAD/CAM技术为核心,融合了反求工程技术和快速原型制造技术,满足了陶瓷石膏模具快速开发的要求,使得设计制造过程更加数字化、规范化.     

基于逆向工程与增材制造的塑料零件修复技术

以某车灯塑料件为载体，基于逆向工程与增材制造技术，解决复杂曲面塑料零件的修复问题，以提高零件的修复效果，为此类零件提供快速、高效、高质量的修复方法。通过三维扫描设备获取破损零部件的点云数据，采用Geomagic DesignX软件处理点云数据，获得破损零部件数字模型，对比分析破损部位的可修复性，分离零件破损部位数模。利用增材制造技术打印破损部位零件，对打印的零件进行虚拟装配检验精度并修复。在不破坏实物模型的前提下，实现了零件快速、高精度检测和分析，完成了对复杂曲面塑料零件的高精度再修复，验证了基于逆向工程和增材制造的产品修复技术的可行性，为复杂零件的修复提供参考。     

先进陶瓷连接的新技术-坯体连接技术

先进陶瓷的连接技术在陶瓷研究中引入注目 ,因为它提供了一种获得以现有的技术不能制造或是制造不经济的复杂形状的陶瓷构件的方法。而今一种新的陶瓷连接技术—坯体连接出现了 ,它以简单的工艺、高效的性价比 ,赢得了世人的注目。运用新的料浆工艺和成型技术 ,坯体连接技术从传统陶瓷领域走向了先进陶瓷的领域 ,成为高性能复杂形状陶瓷构件的有效生产方法之一。     

陶瓷机械装备数字化设计与制造技术的应用研究

随着计算机辅助设计和制造技术（CAD/CAM）的发展,尤其是三维数字化CAD的广泛应用,现代设计理念和方法在众多工业设计领域开展应用。陶瓷机械行业存在设计制造手段传统,技术创新能力较弱等问题,本文就如何加速陶机产品数字化设计与制造技术开展了一定的应用研究。     

基于CAXA系列CAD/CAM软件的陶瓷产品设计及模具加工技术

介绍了基于CAXA系列CAD／CAM软件的陶瓷产品设计及模具加工技术的一般过程和方法，并简要阐述了陶瓷产品设计及模具加工采用CAD／CAM技术的现实意义．以期待推动陶瓷行业采用CAD／CAM技术起到抛砖引玉的作用。     

基于知识工程的陶瓷窑虚拟设计探讨

本文通过论述陶瓷窑的虚拟设计和知识工程的概念,针对陶瓷窑结构设计的特点,建立了基于知识工程的陶瓷窑虚拟设计,并给出了设计实例。基于知识工程的虚拟设计可以在陶瓷窑设计阶段能实时地、并行地模拟出产品的未来设计全过程,预测产品性能、产品的可制造性以及设计的合理性,整个设计可大幅度降低开发成本、缩短投产周期、设计质量最优,增强...     

Pro/E软件在眼镜注塑模中的应用

以眼镜塑料件为例，介绍了该制件的逆向工程、三维造型、模具成型零件设计及其数控加工等过程，并对各过程进行了简要的分析，实现了Pro／E软件在复杂型面模具设计与制造中的应用。     

Accurate printing of a zirconia molar crown bridge using three-part auxiliary supports and ceramic mask projection stereolithography

Zirconia ceramic is a widely used material for dental restoration. Stabilized zirconia all-ceramic teeth have excellent mechanical properties, biocompatibility, and aesthetic properties. At present, the CAD/CAM technique for zirconia all-ceramic dental prosthesis leads to low material efficiency and high tool wear. Although restorations fabricated using additive manufacturing are gaining attention, it is still very challenging to obtain accurate shapes and proper mechanical properties in zirconia restorations. In this investigation, a type of three-part auxiliary support was adopted and added to the occlusal surface to fabricate a typical molar crown bridge. A ceramic solid content of 40 vol% acrylic-based slurry was prepared, and a molar crown bridge was fabricated using mask projection stereolithography. The experimental results showed that the average dimensional error of the printed green body was ±150 μm. The density of the sintered ceramic parts was 6.026 g/cm³, and the three-point bending strength was 541 ± 160 MPa, which is higher than that of human dentin (160 MPa), but lower than that of CAD/CAM zirconia (900–1200 MPa). Although the proposed process still needs to be optimized to improve the mechanical properties and reliability of the crown bridge, the mask projection process combined with the adopted three-part auxiliary supports are capable of individualized manufacturing of complex zirconia crown bridges.     

纤维缠绕成型的CAD/CAM技术研究

纤维缠绕成型是制造高强度复合材料制品的一种重要的成型工艺方法，在国防和航天工业中占有重要地位，将CAD／CAM技术应用与缠绕中可以大大提高生产效率和产品质量、降低设计成本、缩短设计周期。简要概述了纤维缠绕成型CAD／CAM系统的总体方案、关键技术、优化设计，并介绍了国内外的研究进展。     

Additive Manufacturing in Fluid Process Engineering

Additive manufacturing describes technologies that translate virtual computer‐aided design data into physical models in a fast process. While industries such as automotive and aerospace adopt this manufacturing technique rapidly, it is little applied within process engineering. Additive manufacturing offers freedom of design which gives access to novel shapes and geometries with fast production times. This review analyses the most important layer fabrication principles first and shows applications of additive manufacturing in fluid process engineering second. The review focuses on applications where liquids and gases are involved and it showcases the potential of additive manufacturing within process engineering of functional devices. Examples of current research projects show the potential of the technology for advances process engineering.     

Effects of Er,Cr:YSGG laser on repair bond strength of 5-year water-aged and non-aged CAD/CAM ceramics

The aim of this study is to examine the repair bond strength of three different 5-year water-aged and non-aged computer-aided design/computer-aided manufacturing (CAD/CAM) ceramics (leucite-reinforced, lithium disilicate, and feldspathic ceramic) on which four different surface treatments (bur-grinding, sandblasting, acid-etching, and laser irradiation) have been applied with composite resin. Note that 360 ea. samples have been attained from CAD/CAM blocks. Each CAD/CAM ceramic has been randomly separated into two sub-groups depending on aging procedure. The designed 5-year water-aged and non-aged samples have been separated into four sub-groups. Ceramic surfaces were repaired then the samples have been placed into shear test device. Three-way variance analysis has been used in the comparison of the repair bond strengths depending on the ceramic type, surface treatment, and aging. Results have revealed that the repair bond strength values show differences depending on CAD/CAM ceramic type, surface treatment, and the aging of the surface (p < .001). While the aged and laser-irradiated feldspathic CAD/CAM ceramics showing the highest shear bond strength, the lowest shear bond strength values were in aged and bur-grinded feldspathic CAD/CAM ceramics. Irradiation with erbium chromium: yttrium scandium gallium garnet (Er,Cr:YSGG) laser has significantly increased the repair bond strength in leucite-reinforced and feldspathic CAD/CAM ceramics, acid-etching is suggested surface treatment for the lithium disilicate CAD/CAM ceramics.     

Processing of Mullite–Aluminum Composites

Interconnected-phase mullite–aluminum metal–ceramic composites were processed using the indirect fused-deposition process. In this process, controlled-porosity ceramic preforms were fabricated via the lost-mold process. The molds were designed with computer aided design (CAD) software and fabricated using a fused-deposition modeling (FDM) technique. Porous ceramic preforms were infiltrated with aluminum metal, via pressureless reactive metal infiltration, to form the mullite–aluminum composites. Both the macrostructures and the microstructures of the composites were controlled via CAD and FDM. During metal infiltration, the mullite phase transformed to α-alumina, and an alumina–aluminum composite formed. This paper describes the mullite-to-alumina phase transformation during reactive metal infiltration of the porous preforms, as a function of processing variables.     

塑料模具型腔数控加工过程优化设计

基于计算机辅助制造/计算机辅助设计技术,采用UG8.5软件,对塑料模具型腔数控加工过程进行了优化设计。对塑料模具型腔数控加工切削工艺环节上的各参数指标进行优化和完善,将其与传统的计算机辅助设计/计算机辅助工程技术结合,并且使用知识库中的计算推理,从而得到该加工系统中关于切削工艺的参数指标,最大化地提高塑料模具型腔数控的加工效率及产品质量。以塑料模具型腔数控加工切削工艺为研究对象,通过分析切削刀具的运动轨迹和模式,研究其轨迹从而得到算法,再结合数据和知识库,得到了一套关于塑料模具型腔切削加工工艺系统的优化和升级方案,从而为后续的研究应用提供相应的技术支持。