大规模定制生产的系统协同思想及理论与方法

提出了大规模定制生产有效实施的系统集成和协同思想,强调系统整体规划下的产品设计(包括顾客和市场)、生产过程和供应链管理等多个领域的系统实施;讨论了大规模定制生产核心技术体系为主导的生产协同性,以及大规模定制生产实施技术的集成性.在此基础上,提出了相关的研究问题.     

面向大规模定制的外圆磨床定制设计

随着市场全球化的发展和竞争程度的不断加剧，原有的大批量生产模式逐渐被大规模定制模式所代替，面向大规模定制的产品族设计成为研究的重点，本文对基于Internet面向大规模定制模式下的外圆磨床设计方法进行了探讨，其实现过程主要包括两步：产品族模型的建立和产品实例的生成，并对该网络系统的实现进行了理论研究。     

大规模定制战略及我国企业的对策

大规模定制是一种基于顾客价值创新的战略思维，它是将大规模生产与定制生产有机统一，规模经济与范围经济有机统一，成本、产品歧异性和速度有机统一的组合竞争战略。本文认为实施大规模定制战略取决于产品需求状况、企业大规模定制能力、供应链及竞争对手的策略；大规模定制被认为是21世纪的主流生产方式和竞争焦点，我国企业应努力通过提高大规模定制能力来增强竞争力。     

企业自主创新动力因素研究

自主创新在促进企业获取核心竞争优势中有着重要作用.本文结合对河南省300多家企业问卷调研结果,研究了企业自主创新动力因素如何影响并促进企业自主创新活动,并对各个动力因素的重要度进行了评价和比较.实证表明,企业家精神推动和市场推动是促进企业自主创新的主要因素.     

大批量生产与大规模定制生产

本文简要介绍了大批量生产方式的产生和发展,然后对大批量生产和大规模定制生产进行了比较,得出了大规模定制生产是目前动荡市场发展趋势的结论。讲述了大规模定制生产的一些理论、方法和制造企业采用大规模定制生产所必需的一些基础条件。     

大规模定制企业生产作业计划系统研究

生产计划系统是企业实现大规模定制生产的重要环节,仔细对大规模定制生产特征以及大规模定制物料特征进行了分析,主要基于成组技术和多智能体技术对大规模定制生产计划系统进行了研究,建立了一个由订单处理子系统、零件成组子系统和生产调度子系统组成的大规模定制生产作业计划系统.     

面向大规模定制的供应链驱动模型的研究与应用

大规模定制是在高效率的大规模生产的基础上,通过产品结构和制造过程的重组,运用现代信息技术,新材料技术、柔性技术等一系列高新技术,以大规模生产的成本和速度,为单个顾客或小批量多品种市场定制任意数量的产品的一种生产模式,本文提出了面向大规模定制的推拉型供应链驱动模式,构建了以装配为分离点的供应链模型,并进行了案例研究。     

大规模定制关键技术及概念模型研究

在简要回顾国内外研究文献的基础上,指出了当今大规模定制在理论研究方面的不足。提出了企业实施大规模定制需要的若干关键技术及其集成,如数据仓库、企业门户和先进制造等技术的整合;论述了关于大规模定制的国际、国内标准化技术和规范及其对实施大规模定制的必要性,如制造技术、计算机及网络等标准的整合;同时提出了实施大规模定制所需的先进管理思想,如协同、供需网等理念。最后,在总结关键技术、标准化和先进管理思想基础上,提出了面向大规模定制的概念模型。     

浅谈企业标准化的动力因素

企业标准化适应外部环境或动力场的外部动力因素，主要有市场需要和市场竞争、技术壁垒和企业技术联盟等，内在动力是指存在于企业内部对企业标准化活动起推动作用的综合因素，包括企业降低成本、获取经济利益和科学技术进步等，企业标准化需要动力来推动、加速和保持。     

结合大规模定制生产实施客户关系管理

通过对客户关系管理产生的根本原因和它所包含的朴素思想进行的分析 ,认为要想对客户关系进行有效的管理 ,必须和大规模定制的思想结合起来 ,在大规模定制思想的指导下 ,对企业的业务流程进行合理化的改造 ,两者的有机结合才能使企业获得更大的竞争优势 .本文并对客户关系管理的实施进行了阐述 .     

CPQ系列叉车性能浅析

CPQ系列中有三种不同载重量的叉车采用了相同发动机和传动装置。本文从发动机与叉车传动装置匹配关系分析三种叉车的动力性和经济性。结果表明．三种叉车动力性、经济性有较大差异。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

A study of centrifugal cast high boron high speed steel

In the present study a high‐boron high speed steel (HSS) roll material was designed. Many expensive alloy elements have been substituted by cheap boron alloy, and high‐boron high speed steel roll has been manufactured by centrifugal casting method. The microstructures, mechanical properties and wear resistance of centrifugal casting high‐boron high speed steel roll have been investigated by optical microscopy (OM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD) analysis, hardness test, impact test and wear test. The results indicated that the solidification microstructures of high‐boron high speed steel roll consisted of M₂(B,C), (W,Mo)₂(B,C), M₃(B,C), M₂₃(B,C)₆ type borocarbides and martensite, a small amount of retained austenite. Borocarbides were continuously distributed over the grain boundary. After quenching from 1050 °C, local broken network appeared in partial borocarbides, and fine secondary borocarbide precipitated from the matrix. After tempering from 525 °C, the amount of precipitated borocarbide increased significantly. After heat treatment, the hardness of high‐boron high speed steel roll excelled 60 HRC, and its impact toughness excelled 8.0 J/cm². The single groove steel rolling amount of high‐boron high speed steel rolls increases by 500% than that of bainite cast iron roll, when the rolls are used in K₁ mill housing of bar mill.     

Thixotropy of Systems with Shear Thinning and Plastic Flow Behavior

The definition of the thixotropy is a decrease in viscosity with time in shear and a subsequent recovery of viscosity after the shear deformation is removed.We ...     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from