复杂形面最终用途零件分层实体快速制造的精度分析

研究以金属为造形材料的复杂形面最终用途零件的分层实体快速制造,着重分析复杂形面零件现有分层实体制造的原理加工误差与残留加工量,并与三坐标数控加工进行比较,提出一种新的分层板切割加工工艺来降低分层实体制造的原理加工误差和残留加工量。以圆球曲面为对象的分析计算证明新的分层制造方法的效果─在相近或更佳精度与残留加工量的条件下可以将现有分层实体制造的分层厚度从０ ．０５～０ ．１０ ｍｍ 提高到１ ｍｍ 数量级,使最终用途金属零件分层实体快速制造成为可能。     

基于竞争协调机制的广义随机制造系统模型

提出了一种新的面向客户订单的制造系统模型——广义随机制造系统GRMS(Generated Random Manufacturing System)模型。通过采用奖惩机制、竞争机制和协调分布式控制,改善系统的敏捷性。文章阐述了广义随机制造系统的概念,分析了系统的组成结构和基本原理,讨论了系统的运行机制及其意义。     

间歇过程的最优调度策略及应用

给出了间歇过程生产调度问题的概念,它所包括的方面及一般优化数学模型,介绍了整数规划的分段Ｍｏｎｔｅ－Ｃａｒｌｏ优化法,并讨论了这种方法在糖厂煮糖间歇过程的最优调度策略中的应用。     

出土简帛与孟子研究新进展

孟子是儒学重镇,其思想涉及多个方面,在长期不同角度的研读中既有一致又有争议。最近出土的简帛对孟子思想的研读有重要推进,它既使部分共识得以深化、又使部分争议得以澄清,了解出土简帛对于全面而深刻把握孟子思想是十分必要的。     

Role of humidity on the structures and properties of regenerated silk fibers

Silk fiber was processed from highly concentrated spinning dope to solid fibers along with water removal. To understand the mechanism of water removal during silk fiber spinning process, a microfluidic chip was designed and applied to investigate the structures and mechanical properties of two kinds of regenerated silk fibroin fibers dry-spun at different relative humidity. The experimental results showed that the diameters of the fibers spun at 40% RH are always larger than the fibers spun at 50% RH due to different removal rates of water. The fibers spun at low humidity contain more β-sheet structure and lower degree of chain orientation and crystalline orientation. These results indicate that the fast phase transition of silk fibroin from sol–gel to silk fiber undergoes with rapid water removal and higher fiber orientation relates to more residue water and drawing force.     

生物型组织和管理模型综述

对一些生物型组织和管理模型进行了综述。结果表明,生物型组织和管理模型对于描述当今处于混沌,动态环境中的制造系统具有重要意义。     

带搬运时间的批量生产制造系统生产作业计划方法

为给考虑搬运时间的批量生产制造系统中的同类型工件制定生产作业计划,对批量工件的加工与搬运时间、搬运车辆调度和工件移动方式决策等问题进行深入研究.构建同类型批量工件在不同移动方式中的加工与搬运时间模型并设计相应的计算流程图.建立基于生产周期和搬运车辆总投入数量两个决策目标的工件移动方式决策模型.研究结果表明:本研究可有效选择工件移动方式,可为考虑搬运时间的同类型批量工件制定精确的生产作业计划,并可对搬运车辆进行合理调度.     

Total quality management in manufacturing: A study in the Singapore context

The paper presents a total quality management (TQM) framework combining the concepts underlying the notions of total quality control (TQC), Just in Time (JIT), manufacturing resource planning (MRP), and quality control circles (QCCs). An integrative model, in which these notions and the related issues are complementarily connected on the same logical plane is presented and it is argued that this is akin to the total systems intervention (TSI) approach in its endeavor to seek manufacturing excellence. It also has similarities to creative problem solving, especially with regard to corporate strategy, but here with an emphasis on the role of manufacturing. However, TQM is an idea of its own, and not a conceptual derivative of systems theory.     

浅析数控实训基地的作用与发展方向

通过对数控实训基地作用的阐述，指出目前国内类似的数控实训基地还不能适应当前日新月异的制造业对人才培养的需要，同时提出了应着重发展的方向。     

敏捷制造系统及其结构探析

从系统工程的角度剖析了敏捷制造系统的内涵，给出了较完整的概念和主要特征，指出敏捷制造系统和传统制造系统的差异．在制造系统五视图的基础上，构建敏捷制造系统的体系结构。并进行了深入描述．