Automated modular fixture planning: Accuracy, clamping, and accessibility analyses

Attendant Processes such as fixture and die design are often a necessary but time-consuming and expensive component of a production cycle. Coupling such attendant processes to product design via feature-based CAD will lead to more responsive and affordable product design and redesign. In the context of on-going research in automating fixture configuration design, this paper presents a fundamental study of automated fixture planning with a focus on geometric analysis. The initial conditions for modular fixture assembly are established together with geometric relationships between fixture components and the workpiece to be analyzed. Of particular focus is the design of alternative locating points and components, together with examples of 3-D fixture designs.     

低温烧成碱渣釉面砖的研究

利用天津碱厂的碱渣和其它原料试制石灰石质釉面砖.利用X-ray分析了素坯的物相组成,讨论了烧结过程中的化学反应,测试了收缩率、吸水率和抗折强度等物理性能.制得了符合国家标准要求的低成本釉面砖.     

工厂供配电优化设计与案例分析

随着现代化建设的不断推进,各行各业的工厂供配电设计已经非常普遍。降本增效,优化设计是面临的重要问题。本文做了一些描述,希望能够为同行提供一些参考。     

基于控制器IRS2530D的节能灯调光镇流器设计

介绍了I＆S2530D的主要特点和基于IRS2530D的节能灯调光镇流器原理与设计。     

数字工厂和自动化资产通用参考模型

本文总结了工业自动化领域最新发展方向“数字工厂”的背景和主要概念,介绍了“数字工厂和自动化资产通用参考模型”的结构框架、数据库、主要研究内容和标准化进展。     

城市老工业地段整体更新策略探讨——以南京金城集团规划改造方案为例

南京金城厂始建于1949年,目前成为南京老城内尚存的为数不多的零星工业用地,金城厂整体更新的案例是将地块个案纳入到城市整体的城市功能结构、公共配套、景观空间、交通组织、历史文化特色的保护、传统城市空间的延续等角度来思考其整体更新改造,方案旨在为老城内具有一定历史保护价值的工业地段改造探索一种新思路。     

基于DIgSILENT／PowerFactory跨区域电网PSS选址及有效性验证

基于DIgSILENT／PowerFactory模态分析功能,得出了发生机电振荡时局部和区域模态各电机参与因子的模态柱状图、向量图。以辨识PSS最佳安装位置。通过特征值分析和时域仿真,验证了系统安装PSS后的稳定性,对复杂系统PSS安装地址的选取至关重要。     

微网中的储能设备及飞轮储能特性的研究

分析了在微网中的储能设备,重点研究了飞轮储能设备的特性,并在电力系统仿真软件DIgSILENT/Power Factory中进行了仿真,验证了其正确性。     

工厂设计模式的改革

在我国即将加入世贸组织(WTO)、市场经济充满机遇和挑战的时代,工厂设计必须改革;本文阐明现代化工厂设计的内涵和最新的工厂设计模式。     

3+1 architects

Without the predominance of a single presiding tradition of modern architecture in Estonia, the way has been clear for a younger generation of architects to make their mark. Andres Kurg describes the work of 3+1 architects, who launched their career in the mid-1990s with an Estonian Embassy in Vilnius, Lithuania. Through their trend-setting domestic work, they have proved able to appeal to a new wealthy client base, while also developing their own interests in programme and architecture's relationship to the physical landscape. Copyright © 2007 John Wiley & Sons, Ltd.