汽车传动轴专用焊接设备的研制

为解决汽车传动轴制造过程中的焊接质量和焊接效率问题,开发了基于PLC控制的汽车传动轴专用焊接设备.结合该设备技术要求、主要参数、工作原理和汽车传动轴焊接工艺要求,给出了其控制系统的硬件设计、软件设计流程和PLC梯形图程序.该汽车传动轴专用焊接设备能够通过控制系统对焊接过程进行实时控制,保证焊接后传动轴达到预定的质量要求...     

基于EWMA的零件加工过程质量控制系统研究

在传统生产线制造过程中,由于质量信息离散化,获取数据和存储信息不及时,过程质量状态不能实时监控等,造成产品质量异常问题处理不及时、生产成本浪费以及工序能力判断不准确等问题。为解决此问题,以主轴箱箱体加工生产线为研究对象,提出基于指数加权移动平均法（EWMA）的零件加工过程动态质量控制解决方案。利用指数加权移动平均法（EWMA）优化、OPC实时数据采集系统、Web开发平台、MySQL数据库等集成建立了QMS质量控制架构模型。实时采集主轴箱生产线制造过程中的质量数据并进行传输,得到过程质量监测的信息数据。结合EWMA分析主轴箱箱体加工过程中关键质量特征值的控制范围,并将绘制的SPC控制曲线显示在客户端,有效提高质量控制的实时性与准确性。     

Adaptable Design

Increasing competition for better product functionality, quality, features, customization, environmental friendliness, lower cost and shorter delivery time presents unprecedented challenges for product manufacturing enterprises. These challenges cannot be completely addressed by advanced manufacturing technologies alone as some of which are originated from product design. Advanced design technologies and tools for early product design processes are critically needed where most important decisions are made with respect to the product functionality, quality, manufacturability, cost and environmental performance. This paper discusses adaptable design (AD) as a design paradigm for both business success and environmental protection. Adaptable design aims at developing products that are adaptable in their design and/or their production. Adaptability is defined as the extension of the utility (service) of products. Two types of adaptabilities are proposed as product adaptability and design adaptability. Two types of design adaptations are also identified, which include foreseeable specific adaptations and unforeseeable general adaptations. The former can be described by specific adaptability and the latter by general adaptability. Three key elements of AD are presented including functions independence, a measure of adaptability and a function based design process model of the AD. Based on these concepts and design objectives, adaptable design methods and general design guidelines are proposed. Examples are included to illustrate the concepts, design methods and guidelines.     

五层架构的信息化模式在离散型铸造企业中的应用

制造业信息化是用信息技术改造传统产业和实现信息化带动工业化的突破口。介绍了在离散型铸造企业中如何通过建立五层架构的信息化模式,将信息技术、自动化技术、现代管理技术与制造技术相结合,带动产品设计方法和工具的创新,企业管理模式的创新,企业间协作关系的创新,实现产品设计和企业管理的信息化,生产过程控制的智能化,制造装备的数控化,咨询服务的网络化,从而全面提升制造业企业的竞争。     

西气东输工程用钢管质量控制实例(下)

简述了西气东输工程用钢管的生产质量控制的重要性,钢管选材及技术条件的确定,钢管生产过程中质量控制方案及模式,全过程质量控制和全过程驻厂监督的方法。指出过程控制检验是过程控制的重要手段,能有效地降低成品检验的生产方和用户方的风险,是保证产品100%受控的重要手段。重点介绍了钢板、板卷、钢管、弯管生产试验中几个重要的质量控制实例。     

西气东输工程用钢管质量控制实例(中)

简述了西气东输工程用钢管的生产质量控制的重要性,钢管选材及技术条件的确定,钢管生产过程中质量控制方案及模式,全过程质量控制和全过程驻厂监督的方法。指出过程控制检验是过程控制的重要手段,能有效地降低成品检验的生产方和用户方的风险,是保证产品100%受控的重要手段。重点介绍了钢板、板卷、钢管、弯管生产试验中几个重要的质量控制实例。     

Skiving for high-performance machining of periodic structures

Skiving is a continuous cutting method for high-performance machining of periodic structures. With this method, the main manufacturing times can be reduced substantially.The key to the successful application of skiving is the design of suitable tools and safe processes. Due to the complexity of the skiving kinematics, the tool design has to be based on simulation. A suitable software program was developed for this purpose, so that the complete shape of skiving tools can be defined. By simulating the production process with the same program, all cutting parameters for an optimum process adjustment can be determined. Furthermore, a geometric assessment of the resulting workpiece geometry is provided by the software program.The possibilities offered by the simulation software developed, and the skiving manufacturing method, are demonstrated by the example of cylindrical external gearing.     

西气东输工程用钢管质量控制实例(上)

简述了西气东输工程用钢管的生产质量控制的重要性,钢管选材及技术条件的确定,钢管生产过程中质量控制方案及模式,全过程质量控制和全过程驻厂监督的方法。指出过程控制检验是过程控制的重要手段,能有效地降低成品检验的生产方和用户方的风险,是保证产品100%受控的重要手段。重点介绍了钢板、板卷、钢管、弯管生产试验中几个重要的质量控制实例。     

基于QFD的产品设计开发技术的研究

将QFD应用于产品开发过程中,以质量屋为工具,通过将用户质量要求逐步转化为系统质量要求、零部件质量要求、工艺质量要求、直至生产质量要求;注重产品从开始的可行性分析研究到产品的生产都是以市场顾客的需求为驱动,从而保证了企业最终能生产出符合市场顾客需求的产品.     

真实环境下产品数据仿真及并行质量优化研究

提出了非正态分布和非对称公差条件下产品最优配合的控制方法。该方法利用数据仿真技术,解决了制造过程的最优质量控制问题。该方法考虑了从产品设计、产品制造到用户使用3个过程产品并行工程问题,是产品精益制造较好的分析控制方法,保证了产品的最终质量。     

连轧无缝钢管产品缺陷(欠)分析

连轧管机组采用连铸坯高效生产无缝钢管,其生产工艺与传统轧制工艺不同,所产生的缺陷(欠)也不同,分析了连轧钢管主要缺陷产生的原因。生产操作、技术监督以及生产技术管理各环节据此可准确判断产品质量,确定缺陷的产生原因,控制本工序缺陷,最终提高钢管产品质量。     

铝合金消失模模具的快速制造

快速成型工艺结合精密铸造技术是快速制造金属模具的主要途径。研究了一种适用于铝合金消失模模具铸造的最佳工艺，以达到减少铝铸件针孔、提高铝合金铸件质量的目的，解决了新产品开发中金属模具快速制作的关键问题，同时也为快速制造技术在铸造中的应用开辟了一个新领域。     

Design and management of manufacturing systems for production quality

Manufacturing companies are continuously facing the challenge of operating their manufacturing processes and systems in order to deliver the required production rates of high quality products, while minimizing the use of resources. Production quality is proposed in this paper as a new paradigm aiming at going beyond traditional six-sigma approaches. This new paradigm is extremely relevant in technology intensive and emerging strategic manufacturing sectors, such as aeronautics, automotive, energy, medical technology, micro-manufacturing, electronics and mechatronics. Traditional six-sigma techniques show strong limitations in highly changeable production contexts, characterized by small batch productions, customized, or even one-of-a-kind products, and in-line product inspections. Innovative and integrated quality, production logistics and maintenance design, management and control methods as well as advanced technological enablers have a key role to achieve the overall production quality goal. This paper revises problems, methods and tools to support this paradigm and highlights the main challenges and opportunities for manufacturing industries in this context.     

提高冲压模具型面研合率的措施

在汽车覆盖件冲压生产过程中,经常出现表面质量差和尺寸不稳定的现象。表面质量差,会导致返修率和报废率的增加;不稳定的冲压件,直接影响后序焊接过程,甚至影响整车制造精度。高品质和高稳定性的冲压件,是冲压模具行业的追求目标。本文通过分析模具研合率对冲压件的表面质量和尺寸精度的影响因素,并且提出在模具制造过程中部分控制方法。     

基于企业协作制造平台的敏捷制造链快速构造系统

论述了敏捷制造链构造的关键问题，提出了敏捷制造链快速构造的框架和流程。针对敏捷制造链快速构造所依赖的环境，介绍了支持敏捷制造链构造和运行的应用系统——制造协作网。最后，还介绍了敏捷制造链快速构造与运行的实例，展示了应用系统的主要功能，包括加工任务描述、企业搜索、合作企业选择、任务发布与交流等。     

Composite materials parts manufacturing

Composite materials parts manufacturing is based on the interactions of simultaneous as well as consecutive process steps. These influence the composite part properties and economical production. A wide range of possible composite materials and processing technologies necessitate a holistic view of the product life cycle to ensure the best possible economic and ecological outcome. Current studies on new manufacturing and machining processes aim for higher productivity and machinability, whereas new quality control approaches are enhancing the desired product quality. Furthermore, recent research addressing joining concepts and recycling methods has a huge impact on competitiveness and sustainability. Focusing on latest academic research approaches and current industrial application fields, this paper gives an overview of various process steps in the overall product life cycle of composite materials parts manufacturing.     

基于Edgecam的电气控制柜标牌自动编程研究

针对电气柜中的标牌外形和文字加工的数控程序智能编制问题,提出了基于Edgecam软件的自动化编程方法。在基于Edgecam的基础上提出了系统的体系框架;论述了DXF中制造信息提取、单线条字符生成和程序自动编制等关键技术;以Edgecam为平台,利用VB.NET并结合PCI和PDI等二次开发语言编写了程序;以典型零件的编程实例证明了方法的有效性,实现了电气控制柜标牌的智能化和快速化编程加工,为其它产品的数控加工的智能编程提供了借鉴。     

基于DD伺服传动器实现三轴联动定位的设计

直接驱动（DD）伺服是一种高性能的伺服产品，由于其特殊的构造和高精度的设计，使其在制造业、机器人领域得到广泛应用。文章结合自主设计的激光内雕机控制方案，在分析系统工作原理基础上，详述了DD伺服位置控制方法，通过整定其PID参数，实现了三轴联动系统的准确定位。     

插孔绝缘体成型工艺分析及模具结构设计

通过对插孔绝缘体结构及成型工艺要求的分析,介绍了一种利用顶板顶出及模具设计中采用型芯对接结构的工艺难点分析.指出了模具设计结构特点和设计要点,并提出了制造过程中应注意的问题及解决方法,提高了产品质量和模具制造质量.     

数字化加工环境下智能质量分析和诊断的理论与方法

阐述了数字制造和数字化加工在现代制造业中的重要地位，根据数字化加工环境下制造质量的新特点，提出多源、多工序质量信息综合评估的观点。针对数字化加工过程质量诊断问题，提出了加工过程误差源诊断的分析方法，给出了加工过程工序质量控制和诊断的集成框架，结合国内外在加工质量诊断研究和应用的示例指出，采用多源智能信息融合、人工智能处理和综合决策等方法是实现数字化加工过程建模以及集成质量诊断的有效途径和发展趋势。