共查询到18条相似文献,搜索用时 187 毫秒
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以卧式加工中心为母机,设计630 mm托盘交换机构。详细阐述了托盘交换机构的结构,包括安装底座、支撑腔体、上底座、齿轮中心轴、交换臂、液压缸体、液压活塞、花键轴等。摆动油缸驱动式托盘交换机构以液压为驱动力,实现交换机构升降旋转。采用活塞结构与轴承、摆动油缸相结合的结构方式,完成升降与旋转,升降过程由活塞结构完成,旋转过程由摆动油缸完成,具有安装简单、高稳定性、高效率等优点。 相似文献
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鲁国满 《组合机床与自动化加工技术》1988,(8)
本文就ZHS-FMS-02柔性制造系统中采用的直线式有轨运输车物料贮运系统的开发过程作了详细介绍。文中阐述了开发直线式有轨运输车物料贮运系统考虑的一些因素,介绍了有轨运输车的主要构成模块及结构特点和性能测试情况,并提出了有轨运输车的系列设想。 相似文献
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介绍了龙门加工中心交换台液压控制系统,通过合理选用液压元件和结构的改进设计,使工作台交换时齿条油缸自身具有起停缓冲功能,有效防止了交换台交换过程中的冲击,实现了加工中心零件不停机更换,大幅度提高了机床工作效率和机床利用率。 相似文献
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《组合机床与自动化加工技术》1974,(5)
由于液压传动技术的发展,所以越来越多地采用液压通用动力部件(如液压动力滑台、液压镗孔车端面动力头等)组成组合机床及组合机床自动线。在这类机床上广泛地应用了各种液压传动的分度回转工作台。在机械传动的组合机床上也有用液压回转工作台的,但比较少。 液压分度回转工作台大多用油缸驱动。驱动油缸基本上有两种型式:一种是用往复式直线运动的油缸,活塞杆兼作齿条,即所谓的用油缸——齿轮齿条直接或间接地与工作台回转轴上的齿轮啮合实现分度传动;另一种则是用回转油缸直接或间接地驱动工作台台面回转。 相似文献
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目前数控机床、加工中心上常用光栅、感应同步器等直接测量工作台的直线位移,其优点是直接反映工作台的直线位移量,缺点是测量装置要和行程等长,并要安置一套光栅测量装置或感应同步器测量装置。近年来外国出现了一种新型的带位移测量装置的油缸—CYLNUC型油缸,这种油缸可与CPU直接连接,无需另外的附加装置,基本上只是在普通油缸内加设一位移传感头,可直接测量由油缸驱动的工作台的直线位移。这种油缸的结构如图1所示。其位移测量原理如图2所示。位置检测机构由活塞杆装在 相似文献
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以Petri网为建模工具,以Profibus现场总线为通信手段,用一台工业机器人和一部有轨小车作为物料输运工具,将一台加工中心、一台数控铣床和物料库连接起来,构造了一条教学型柔性制造系统YG-FMS,具有对各加工单元进行作业调度、协调控制和实时监控的功能.本文着重阐述YG-FMS总体结构、系统建模、信息通讯和系统监控等关键技术. 相似文献
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高精度的回转工作台是数控机床的不可缺少重要部件之一,在有些场合需要用到180°定角度转位的回转工作台。设计了一种利用液压缸驱动、齿轮齿条传动,可自动消除间隙的回转工作台。该工作台主要包括工作台、箱体、抬升驱动机构、回转驱动机构以及消隙机构等。该回转工作台能实现定角度转位,自动消除间隙,并且传递扭矩大、结构简单、传动精度高。 相似文献
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Jae-Won Choi Francisco Medina Chiyen KimDavid Espalin David Rodriguez Brent StuckerRyan Wicker 《Journal of Materials Processing Technology》2011,211(3):424-432
Development of a flexible and mobile fused deposition modeling (FDM) system from an existing FDM system to enable deposition of material on virtually any surface without being confined to a build chamber is described. Flexibility of the system was demonstrated by depositing ABS on different surfaces, and simple pull tests were performed to determine bonding strength between the deposited materials. To develop the flexible FDM system, a Stratasys FDM 3000 machine was used and modified by reversing the z stage and attaching the x-y table controlling the FDM head to the bottom of the z stage. In this new configuration, the z stage transports the x-y table vertically, and the x-y table controls the x-y motion of the FDM dispensing head, which is exposed at the bottom of the machine. The mean of the absolute value of the difference between 49 part dimensions (based on 20 part features) measured on a modified Grimm test part (n = 5) was ∼0.44 mm for parts fabricated using the developed flexible FDM system, while a mean of ∼0.11 mm was measured using parts produced by the commercial system (n = 5). The dimensional accuracy of the flexible system was comparable but expectedly larger than the commercial system, due to the configuration of the flexible FDM system with the x-y table attached at the bottom of the z stage. There are many possible design improvements particularly focused on reducing deflections in the mechanical components that can be explored and implemented to improve the overall dimensional accuracy of the flexible system, but these investigations are left for future research. Instead, manufacturing flexibility of this new configuration was demonstrated by successfully building a cylinder on flat and 3D cupped surfaces, including building a horizontally oriented cylinder on a wall by orienting the FDM system in the horizontal position. Pull tests were performed and showed that bonding strength for the cylinders built on flat surfaces compared favorably to a glued part (3.06 ± 1.38 MPa for the specimens manufactured with the flexible FDM system compared with 2.00 ± 1.06 MPa for the glued specimens). Additional flexibility was demonstrated by printing directly on a complex curved surface, thus illustrating the possibilities for using AM (a traditional 2D layer-stacking processing technique) in conformal printing applications. It is concluded that this new machine can provide enormous flexibility in freeform manufacturing with applications in part repair, 3D conformal adhesive dispensing, and a number of applications where the removal of the size constraints imposed by the build chamber enables one to deposit new arbitrary features directly on existing parts. 相似文献
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