Two Cultures of Technical Courses and Discourses: The Case of Computer Aided Design

Researchers in science and technology studies (STS) are in the process of dismantling the conventional human-machine and nature-society-technology boundaries solidified by C. P. Snow and generations of designers, engineers, researchers, scientists and teachers. Using the case of computer aided design (CAD), I argue that by combining the sociopolitical knowledge of STS with technical knowledge we can finally and forcefully bring an end to technical education. To make this argument, I draw on my experiences in teaching CAD in post-secondary institutions in design, engineering, and teacher education. Theories and practices are described to assist design and technology educators with the dilemma of addressing sociopolitical knowledge.     

涡轮钻具CAD系统研究

在分析涡轮钻具结构的基础上，论述了涡轮钻具的结构的数据的CAD表示方法，同时系统采用参数化图形建模方式，能方便地辅助分析装配过程中轴向间隙的大小，该系统基于WINDOWS平台，用BorlandC 开发而成。     

基于ArcObjects和COM-Add-Ins乡级土地利用总体规划辅助编制系统设计与实现

研究目的：探讨基于ArcObjects开发乡级土地利用总体规划辅助编制信息工具集的技术路径。研究方法：针对乡级土地利用总体规划编制特点,在ArcObjects基础上,通过COM-Add-Ins的集成和解耦设计,充分应用ArcObjects空间计算、Excel数据统计、Matlab的数值分析和系统仿真的功能,设计和实现集成式乡级土地利用总体规划辅助编制系统（TLUPCS)。研究结果：TLUPCS系统实现了空间关系计算、净面积计算、指标空间关联计算、报表统计、图件设置、属性赋值和决策支持等规划辅助编制功能。研究结论： TLUPCS系统可以有效满足规划编制人员的实际业务需求,系统框架富有弹性,能够有效应对业务规则的变化,证明基于ArcObjects和COM-Add-Ins的开发技术方法是有效和先进的。     

基于CAPP的CAD/CAM集成式新型数控加工模式的构想

本文在产品设计制造全流程的层面,考虑CAD、CAPP及CAM各自的侧重点,从数控加工的角度,着力探讨了围绕产品加工下一种新型的CAD/CAM集成式数控加模式。     

工程制图与CAD课程教学改革必要性的探讨

传统的工程制图课程主要讲授二维投影,工程领域也把二维投影作为主要表达方法。但二维投影本身与设计方法事实上是相悖的。三维CAD的发展使得设计可以按照设计本身的规律进行。通过分析三维CAD技术的发展,以及因此而引发的对设计和制造领域的变化,对工程制图课程的影响,提出了高校工程制图课程面临的问题和改革的必要性。     

Attitudes of Design Students Toward Computer Usage in Design

The success of efforts to integrate technology with design education is largely affected by the attitudes of students toward technology. This paper presents the findings of a research on the attitudes of design students toward the use of computers in design and its correlates. Computer Aided Design (CAD) tools are the most widely used computer applications in design. An instrument was developed and applied for the first time to relate computer attitude to design field through CAD. Interior architecture undergraduates of Bilkent University participated in the survey. As a result, students’ attitudes toward the use of computers in design were found to be positive. A significant gender difference in attitudes toward computers was observed with males having more positive attitudes than females. The results also revealed that students’ attitude toward computer usage in design was highly related to their general attitude toward computers, but it was not correlated with their perception of instructors’ attitude toward the use of computers in design.     

计算机辅助工厂设计系统AutoPDS功能的探析

在介绍了沈阳东大阿尔派计算机辅助工厂设计系统 Auto PDS的主要结构及应用技术的基础上 ,总结了 Auto PDS系统的功能和特点 ,探讨分析了 Auto PDS系统的不足及其原因。     

电子设备结构优化设计支撑软件技术

介绍了电子设备结构中针对散热、冲击振动和电磁兼容等方面的优化设计内容和现状,及其三者兼顾的综合优化设计方法结构优化设计支撑软件技术要求和具体内容,并以一具体项目作为案例进行说明.     

一种新颖的逆变器的造型,分析和设计

本文借助于CAD技术对一种新颖的逆变器——具有磁耦合的晶体管阶梯波逆变器进行了分析。将功率晶体管用理想开关代替,对磁耦合器件作相应的等效处理、建立起电路的通用等效模型。文中还给出了仿真曲线和实验波形。结果表明,仿真过程是可行的,设计思想是合理的。     

浅谈UG软件在零件建模数控加工中的应用

计算机辅助设计与制造技术快速发展,广泛应用于产品设计和机械制造中,CAD/CAM技术是先进制造技术的重要组成部分,使用CAD/CAM系统产生的NC程序代码可以替代传统的手工编程,进行零件的设计和加工制造。UG软件自从进入中国以来,得到了越来越广泛的应用,现已成为我国工业届主要使用的大型软件之一,在零件建模及数控加工中提供最优化的方案。