基于条码技术的叶片制造过程质量追溯系统研究

针对企业对产品制造过程质量追溯性的迫切需求,提出了一种基于条码技术的制造过程质量可追溯模式。通过分析叶片制造过程的质量信息和质量追溯数据流程,确定基于条码的质量数据自动采集方案,建立了质量追溯系统的运行模式和体系结构。开发了叶片制造过程质量可追溯系统原型,实现了快速查找质量问题产生的原因,及时发现工艺系统缺陷,采取纠正及预防措施,有效控制产品质量,降低制造成本。     

质量管理在产品设计和开发中的应用

随着科学技术的发展,用户对产品质量的要求越来越高,产品的质量很大程度上依赖于产品设计的质量,众所周知,如果设计存在缺陷,即使生产过程控制再严格,也制造不出高质量的产品。因此,质量管理在产品设计过程中显得尤为重要,在产品设计中应用质量管理的方法和理念,是提高产品设计和开发质量的唯一途径和方法。     

企业质量元数据标准研究与制定

如何使质量管理人员在现代质量管理环境下有效应用和管理质量数据是提高企业质量管理水平面临的首要问题.提出质量元数据的概念,通过它可使质管人员对质量数据的各种属性有更加深入的了解,为进一步使用和管理质量数据打下坚实的基础.同时,重点阐述质量元数据标准的制定过程,给出元数据标准的内容结构和置标方案.     

产品设计质量控制方法研究及系统开发

系统地分析了现代产品设计质量的形成过程，对产品设计质量控制与保证的内容和方法进行了分析与研究。提出了集支持工具、过程方法和质量信息管理于一体的面向产品设计过程的设计质量控制模型，阐述了保证产品设计质量的策略。基于此模型构建了产品设计过程质量控制与保证系统的总体框架模型，并针对框架系统的实现作了介绍。     

产品全生命周期的工艺质量模型与并行制造方法研究

提出了现代质量观念下面向产品全生命周期的工艺质量的概念，建立了统一的工艺质量模型。该模型分为5个层次，即整体工艺质量层、质量特性层、工艺质量要素层、工艺决策参数层和集成信息平台层，由8个元组组成。在此基础上，探讨了基于工艺质量模型的并行制造实施方法，包括鉴别质量特性、配置工艺质量要素、工艺质量要素自动“聚焦”与协同决策、工艺质量评价，以及工艺质量改进5个步骤，有利于保证与改进产品全生命周期中的工艺质量和产品质量。     

基于SPC的EPR质量管理系统的研究与实现

SPC(统计过程控制)是进行质量分析、质量控制和质量改进的科学方法,是现代质量管理系统的重要组成部分.在对现代质量管理系统进行研究的基础上,将SPC技术应用到质量管理系统中,利用.net平台和SQLServer 2005数据库,开发了基于SPC的ERP质量管理系统,并在实际中得到应用.     

基于保质设计的材料信息模型研究

质量保证设计（DFQ）是将质量保证和质量管理融入到产品设计中的一种新的设计方法。深入分析产品设计各阶段对材料质量信息的需求,建立支持保质设计的材料信息模型。考虑到材料质量信息与CAD／CAPP,ERP,PDM等应用系统集成方便．提出基于STEP的材料信息模型。     

CONTINUOUS IMPROVEMENT THROUGH INTEGRATION OF QUALITY TOOLS

The relationship between major quality tools such as quality function development (QFD), failure mode and effects analysis (FMEA), design of experiments (DOE) and statistical process control (SPC) is analyzed through an extensive review of the literature and the concurrent quality engineering philosophy, and a basic structure for the integration of quality tools is presented. An integrated quality management system (IQMS) is developed using C++ Builder, running in the Windows 2000 Server environment with the basic internet connections, and SQL Server 2000 as the platform for developing the database. An illustrative example applying IQMS to the continuous quality improvement for a crane equipment manufacturing is reported. The result shows that the application of IQMS can optimize the process of design and manufacturing, shorten the cycle time of product, reduce the cost, and realize quality improvement continuously. The proposed integrated framework with IQMS is believed to be applicable to continuous quality improvement in many manufacturing companies.     

Optimising robust design for correlated quality characteristics

Many industries have employed the Taguchi method over the years to improve product and process performance. This method is powerful and effective in helping manufacturers to design their products and processes as well as to solve troublesome quality problems. Several studies have presented approaches to multiple quality characteristics. Few published articles have focused primarily on optimising the correlated multiple quality characteristics. This research presents an approach to optimising the correlated multiple quality characteristics using principal component analysis and grey relational analysis based on quality loss. As can be seen in the results, the advantage of this approach is that the chosen optimal design for multiple quality characteristics is robust for the correlated multiple quality characteristics. This method finds the optimal parameter conditions more easily, even when the average quality losses of the quality characteristics are all diverse.     

网络环境下可重组制造质量保证系统的研究

针对上海某企业电机转子装配生产线进行可重组改造的实际情况,在对网络环境下生产过程质量控制要求进行分析后,提出了适用于多品种批量生产的可重组制造模式下的质量保证系统。系统设计了从生产现场出发,按照ISO9000标准体系要求,利用网络技术并重点改造了影响产品质量的几个关键工位,建立面向可重组制造生产过程质量数据采集、分析及管理的过程质量控制系统,到最终确保质量的整体解决方案,有效实现了可重组状态下的质量保证系统。     

狠抓质量管理 使名牌产品更加亮丽

狠抓质量管理,是企业求生图存快速发展的必由之路,提高产品质量是企业在市场竞争中的立身之本和致胜法宝。要全面提高产品质量,使名牌更亮丽,必须不断增强员工质量意识,提高产品设计质量,制造质量和产品售后服务质量,只有这样,才能不断创造适应市场的名牌产品,为我国民族工业的振兴和发展作出新贡献。     

基于计算机技术的工序质量控制系统研究

针对企业设备陈旧、加工手段落后致使产品质量不高的状况，在分析工序质量控制观念、方法的基础上，提出了应用计算机技术进行在线控制的构想。对控制系统运行所依据的数理统计理论及控制方法与计算机技术结合的可行性进行了分析。以经济实用性、现场可操作性为出发点，将计算机技术、在线检测技术、传感技术、网络与数据库技术及质量控制方法相结合，使所开发出的系统能够实现在线工序质量控制。该系统可用于对单工序、多工序及区域性的质量控制并可对工序质量及系统自身进行可靠性分析和经济性分析。     

质量计划方法与软件工具系统研究

通过分析、研究质量计划过程,建立了质量计划过程模型。以过程模型为基础,通过分析、研究现有质量工具在质量计划中的作用、适用范围,建立了质量计划过程中工具间的关系模型。以上述模型为基础,探讨了面向群体协同工作环境、具有智能支持的质量软件工具系统的研究与实现,并给出了一个应用实例。     

A quality diagnosis method for the large equipments base on quality gene similarity

The quality of the products is one of the key factors for the enterprises to increase their core competitiveness. In order to resolve the problems that the quality diagnosis with respect to manufacturing process is not effective or the low efficiency in the large equipment manufacturing enterprises, we propose a quality diagnosis approach based on the similarity of product quality gene. First, we use a product quality gene model to calculate the similarity between the organisms and the products. Second, a kind of quality gene codes is adopted to describe the complex quality information for manufacturing process. Then, string and grey relation similarity are used to evaluate whether the quality is normal or not by considering the similarity between the detected product quality gene and the case genes. Finally, we use the rotary kiln bearing body as an example to illustrate the proposed algorithm process. Experimental results have shown that the proposed approach is able to support quality diagnosis.     

Quality Loss Functions for the Measurement of Service Quality

Service industries are growing at an explosive rate, particularly in comparison with manufacturing. Numerous service industries concentrate on service quality to enhance their competitive power. Customer satisfaction is a growing concern to many leading companies throughout the world. Improving service quality is considered an essential strategy for success and survival in today’s competitive situation. In order to meet the actual needs of customers, it is important to quantify service quality. However, using Taguchi’s quality loss function is not adequate for portraying the real situation in the service sector. In this paper, two modified quality loss functions are provided to measure service quality. The properties of these quality loss function parameters are discussed. The expected quality losses for the modified loss functions are also compared to that of Taguchi’s loss function. The results show that these modified quality loss functions are much more suitable for measuring service quality. ID="A1"Correspondance and offprint requests to: Dr M.-H. C. Li, Department of Industrial Engineering, Feng Chia University, PO Box 25-097, Taichung 407, Taiwan. E-mail: mhli@fcu.edu.tw     

Evaluating the product quality level under multiple L-type quality characteristics

One of the most critical issues encountered in the area of quality engineering is the selection of an appropriate quality loss function to relate key quality characteristics of a product to its quality performance. The loss function can be used to evaluate the quality loss in terms of monetary units that enables managers to quantify unobservable costs. It aids manufacturers to evaluate quality improvement projects more rigorously, hence, the choice of paths for quality enrichment depends on the type of loss function. Although several multivariate quality loss functions have been proposed, these models only considered the-nominal-the-best (N-type) quality characteristics. The effect of other types of quality characteristics was not addressed. In this paper, a cost model is proposed to evaluate the quality level of a product with multiple the-larger-the-better (L-type) quality characteristics. An example with two quality characteristics is given to illustrate the application.     

Rectifying inspection for acceptable quality loss limit based on variable repetitive group sampling plan

It is usually assumed that a quality characteristic in an item obeys a normal distribution in the case that the quality of items is evaluated based on the variable property. Then, the concept of Taguchi’s quality loss has been accepted as the evaluation measure of quality instead of the traditional attribute property such as the proportion of nonconforming items. From this viewpoint, some variable sampling plans indexed by the quality loss have been investigated before now. As a study earliest among them, the variable single sampling plan based on operating characteristics (OC) indexed by the quality loss was considered. On the other hand, the attribute repetitive group sampling plan on OC was proposed for reducing the sampling number in the inspection. Recently, the variable repetitive group sampling (VRGS) plan on OC indexed by the quality loss has been considered. By the way, the rectifying inspection is known as one of the schemes of acceptance sampling inspection. Then, Dodge-Romig single sampling plans are known as the traditional rectifying inspection based on attribute sampling plans. Dodge-Romig rectifying attribute sampling plans provide the lot tolerance percent defective (LTPD) scheme on each lot and the average outgoing quality limit (AOQL) scheme for many lots. Furthermore, the rectifying variable single sampling (RVSS) plan indexed by the quality loss was investigated. In conformity with the traditional rectifying attribute sampling plans for the LTPD and AOQL schemes, the acceptance quality loss limit (AQLL) and specified permissible average outgoing surplus quality loss limit (PAOSQLL) schemes are respectively proposed in the RVSS plans indexed by the quality loss. In this article, we suppose that the quality characteristic in an item obeys a normal distribution. Under this condition, the rectifying variable repetitive group sampling (RVRGS) plan for AQLL is considered for the purpose of reducing the average total inspection (ATI). Specifically, the design procedure for finding out the required sample size and inspection criteria for satisfying the constraint of the quality assurance is derived. Lastly, it is shown that ATI of the RVRGS plan is reduced in comparison with that of the RVSS plan under the same condition.     

基于熵值法的产品广义质量综合评价方法

为有效地对产品质量做出客观评价,运用产品广义质量综合评价方法,针对不同的指标类型选用不同的从优模式进行数据标准化,结合熵值法对指标权重值进行确定,对产品质量进行综合评价.以气流筛分机为例,利用基于熵值法的产品广义质量综合评价方法对各型号的气流筛分机进行产品质量综合评价,并通过用VB编写的计算机软件对具体评价过程进行计算,使评价过程更加客观可靠.通过此方法得出的评价结果为用户合理选择产品提供了依据,为企业评价与提高产品总体质量提供科学的决策依据.     

计算机辅助进货质量管理

在一个制造企业的生产制造质量中，包含着相当部分的供应商制造质量。所以企业要确保产品质量，一定要重视对进货的质量管理和控制。本文首先分析了ＩＳＯ９０００国际质量标准对进货质量控制的要求，然后介绍了用ＯＲＡＣＬＥ数据库系统开发的符合ＩＳＯ９０００标准的计算机辅助进货质量管理系统。