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基于数控加工工序集中要求的程控气动夹具设计 总被引:1,自引:0,他引:1
结合某系列升降机产品中联轴器零件实例,分析了某B型联轴器零件传统工艺、数控加工工艺及夹具设计相互关联.根据联轴器零件数控加工对夹具柔性化要求,提出工序集中的机械零件定位规划必须满足夹具定位基准选择相同原则;设计了一款PLC程序控制气动夹具,以西门子S7-200PLC编制程序控制夹具正确定位与顺序夹紧模块,并通过实验成功调试;简要叙述西门子中档数控系统的机床PLC程序控制开发.文章为实际生产同类机械零件的加工工艺方案设计和进一步实现程序控制气动夹具融入到数控机床中的柔性制造系统提供理论技术借鉴. 相似文献
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Aspects of reconfigurable and flexible fixtures 总被引:1,自引:0,他引:1
The design and manufacture of fixtures and other dedicated tooling for positioning of workpieces are among the major cost
drivers in product industrialization. This has spurred research and commercial interest towards other fixturing solutions
like reconfigurable fixtures, with the ability to be changed, or “reconfigured”, to suit different parts and products. When
reconfiguring, the product interface not only has to be moved but moved to a desired position and orientation. Several different
approaches have been used to move and position these devices, all with their own advantages and disadvantages. This article
presents different methods used to position and reconfigure flexible fixture devices using a parallel kinematic device as
a case. Discussing the different ways to reconfigure a flexible device, the article aims to arrange the techniques according
to their key features. 相似文献
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以轴流风机铝合金机壳为实例,针对薄壁机壳零件径向夹持时易变形的特点,详尽介绍了快速夹具夹紧式、气动弹性夹头夹紧式和楔紧块夹紧式车夹具各自的优良性能和应用价值。这类夹具的共性不仅有定位、夹紧可靠,装、拆工件方便、快捷,更使产品合格率和生产效率获得大幅提升,在微电机尤其是小型风机机壳或特型端盖等薄壁零件生产中具有一定的拓展应用意义。 相似文献
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组合夹具是解决小批量多品种、生产柔性化的有效手段,计算机辅助组合夹具设计是先进制造系统发展的必然要求.在现有夹具设计方法的基础上,建立计算机辅助组合夹具设计(CAMFD)系统的架构,并提出参数化的组合夹具元件建模技术以及基于粗糙集知识发现的组合夹具设计技术.并以槽系要素的组合夹具为实例证明了系统的实用性和有效性. 相似文献
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《CIRP Annals》1988,37(1):433-437
Implementation of Group Technology in Computer Integrated Manufacturing (CIM) demands more advanced methods to satisfy today's requirements imposed by the development of CIM. In this research, an integrated approach for G.T. applications using Artificial Intelligence methods is developed. Pattern recognition methods are applied to generate a customized G.T. coding scheme, to form initial part families, and to classify new parts into part families. The system has been tested using real industrial data with good results. 相似文献
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基于Windows平台,以AutoCAD for Windows为支撑软件,利用其ADS开发系统,针对焊接工装夹具的多样性,采用模块化、渐增式开发式和三维参数化设计以及面向对象程序设计方法,建立了焊接工装夹具CAD(WFCAD)系统。系统具备能完成从焊件原始信息处理到夹具的基本尺寸、结构尺寸的设计与计算、三维模型图生成和三维动态结构模拟以及由三维模型图生成装配图和零件图的功能。WFCAD系统具有扩充性好和开放性的特点,并采用标准的Windows人机对话界面,直观,简洁。 相似文献
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总结了压铸模标准件的设计特点,并建立基于知识的压铸模具标准件库CAD系统.该系统实现三维压铸模具标准件的参数化建模和智能装配,提高了模具设计的工作效率,缩短了新产品的研制周期. 相似文献
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根据塑件结构特点和技术要求,设计了1副1模1腔三板注射模,使用点浇口进料,通过T形块、斜导柱+滑块、滑块内置斜推块等复合抽芯机构,解决了多个方向的倒扣脱模问题。经生产实践表明,模具结构设计合理、抽芯机构稳定、工作可靠、安装方便、占用空间少、模具零件易更换,生产的塑件成型质量好,取得了良好的经济效益。 相似文献
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R. Hunter J. Rios J.M. Perez A. Vizan 《International Journal of Machine Tools and Manufacture》2006,46(6):683-697
The design of machining fixtures is a highly complex process that relies on designer experience and his/her implicit knowledge to achieve a good design. In order to facilitate its automation by the development of a knowledge-based application, the explicit definition of the fixture design process and the knowledge involved is a prior and a fundamental task to undertake. Additionally, a fundamental and well-known engineering principle should be considered: the functional requirements and their associated constraints should be the first input to any design process. Considering these two main ideas, this paper presents the development undertaken to facilitate the automation of the fixture design process based on a functional approach.In this context, the MOKA methodology has been used to elicit fixtures knowledge. IDEF0 and UML have been used to represent the fixture design process. A methodology based on the function concept and aiming to formalize such design process is proposed. Fixture functional requirements have been defined and formalized. Functional fixtures elements have been used to create a functional design solution, the link of these elements with the functional requirements and with typical commercial fixture components has been defined via tables and rules mapping. And finally, a prototype knowledge-based application has been developed in order to make an initial validation of the proposed methodology. 相似文献
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铸造模样等高分割制造法及其模块化技术是对数控技术、CAD/CAM技术的进一步集成和创新,是解决复杂模样的切削加工,充分发挥数控切削设备潜能的实用技术,是提高复杂模样制造效率的有效途径。模块化技术应用于铸造模样分割制造的主要过程包括:组合结构的模块化,分割件建模设计的模块化,数控编程的模块化,数控加工操作过程的模块化,以及夹具的模块化。论述了模块化理念,模块的创建,各种模块的应用。 相似文献
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以一个五自由度转子支承系统为例,简述了电磁轴承一转子系统的组成与结构特点;从设计与制造角度,将系统分成电磁轴承系统组件和转子系统组件两部分,分析了两个系统组件中各零部件的设计制造特点;给出了符合加工与装配过程结构工艺性的零部件参数设计和选择的方法。 相似文献