一个基于XML的网络课件开发系统的设计与实现

在分析目前网络课件存在问题的基础上，提出并设计了一种支持国际标准规范的基于XML的课件开发系统，并对系统实现过程中所涉及的关键技术进行了分析研究。     

A new approach of online waste removal process for laminated object manufacturing (LOM)

A new online de-cubing laminated object manufacturing process which employs self-adhesive sheet with shielding paper is proposed in this paper. The main idea of this new process is to perform bond-then-cut at the same position, avoiding the accumulated error resulted from reposition, and to de-cube the inner waste material in process by peeling off the shielding paper. By doing so, about 30–80% waste material according to various geometric shapes can be removed during the machining process. The new process not only shortens the time for laser cutting and de-cubing, but also enables the production of hollow and shell-shaped parts. Hence, the proposed process promotes both the performance efficiency of laminated process and the manufacturing ability regardless the geometry of the parts.     

砂土中有机物质腐解与有机质调控

通过砂滤管和尼龙网袋法研究了有机物料在砂土的腐殖化和矿质化规律,对该土壤有机质培肥及调控提出了建议。研究表明:供试的几种物料总的分解速率趋势为:玉米秸杆>小麦秸杆>鸡粪>牛粪>猪粪。砂土有机质的矿化速率为3.06%;同时发现两种研究方式下,土壤有机质含量和活性有机质含量二者之间具有明显的相关性。     

A comparison of rapid prototyping technologies

Until recently, prototypes had to be constructed by skilled model makers from 2D engineering drawings. This is a time-consuming and expensive process. With the advent of new layer manufacturing and CAD/CAM technologies, prototypes may now be rapidly produced from 3D computer models. There are many different rapid prototyping (RP) technologies available. This paper presents an overview of the current technologies and comments on their strengths and weaknesses. Data are given for common process parameters such as layer thickness, system accuracy and speed of operation. A taxonomy is also suggested, along with a preliminary guide to process selection based on the end use of the prototype.     

基于5 mm以上分层板金属功能零件LOM技术

分析了金属分层板大幅度提高的可行性,提出了用数控机床完成金属层板切割、采用焊接和金属板材组装相结合的连接方式成型的方法有效提高成型零件的强度和加工效率,最终获得具有较高精度和强度的金属功能零件。     

分层物体制造临界分离角的提出与应用

通过对分层物体制造工业应用关键技术及废料分离机理的分析讨论,首次提出临界分离角的概念,阐述了应用临界分离角的废料网格划分方法.应用临界分离角理论划分废料网格可从根本上解决废料分离问题.     

LOM技术中的挤制陶瓷片的研究

采用挤出工艺制备了用于ＬＯＭ技术中的Ａｌ２Ｏ３和ＳｉＣ陶瓷片坯件，厚度０．２ｍｍ。有机物载体采用低密聚乙烯，固体粉料占４８ｖｏｌ％，研究了Ａｌ２Ｏ３－ＬＤＰＥ混合物的流变性能，对陶瘊片进行了ＴＧ－ＤＴＡ热分析和ＳＥＭ微观组织分析。     

薄材叠层快速成型HRP系统

本文分析、介绍了基于分层物体制造思想的国产化薄材叠层快速成型HRP系统的组成、在工程化过程中所解决的关键技术问题以及系统特点和应用情况。     

快速成型技术综述

介绍了快速成型技术的原理、王要工艺方法、优点、存在问题和发展趋势及国内状况.     

基于LOM工艺的主轴快速成型工艺

快速成型技术(RP)是20世纪80年代后期发展起来的先进制造技术,是集机械、电子、光学、材料等学科为一体的先进制造技术。文章阐述了较流行的RP技术之一——LOM技术的基本原理和一般工艺过程,并以实例说明其在产品开发中的广泛应用。