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Fig. 5. Shown is the alu- minum parts fixture on a standard base plate.


图5:在标准底盘上的铝合金 铸件固定装置。


blies through several axes and adjusted to the needs of numerous assemblers. Flexibility in the pallet fixture determined the degree of freedom available to part loading schedules. Tis flexibility also had to be taken into account when dealing with the ability to accommodate different parts of different shapes and sizes. As part of the Autocast Project, the aluminum casting


facility implemented four modular solutions for handling aluminum parts and sand cores. One of those solutions is shown in Figs. 5 and 6. Te same standard base plate was used to transport sand cores and aluminum parts. Te alumi-


装卸铸件时间的自由度。为了能够安装不同形状和 大小的零部件,这种灵活性也必须加以考虑。 作为Autocast项目的一部分,铝合金铸造厂为铝 合金铸件和砂芯的运输提出了4个模块化的解决方 案。其中一个解决方案如图5和图6所示。同样标准 的底盘被用于砂芯和铝合金铸件的运输。铝合金铸 件由3个可调节的支点支撑。3支摇臂可以在X,Y,Z


Overview of Flexibility Parameters 柔性参数概述


In the present market circumstances, customers are


looking for flexible lead times for small to medium batch volumes of parts. Tis necessitates well managed economical production of smaller lots to respond quickly to customer demands. For economical manufacturing of small lot sizes, a considerable degree of flexibility is needed. Following are several taxonomies, or classifications, of the types of flexibility needed in small and medium metalcasting facilities. Changeover Flexibility—Te number of different prod- ucts being produced concurrently over time; the result of uncertainty of the length of product life cycles. Te changeover time in a metalcasting facility could be


decreased by following basic handling practices, such as hav- ing remote actuation, ensuring access of tools to the machine, eliminating the need to handle hot parts and provide hydra- tion to the operator. Product Modularity Flexibility—Modular product design


with component modularity to leverage product variations and use of common components across product families. Modular product configuration can reduce the variety of components while offering a wide range of products. Product Mix Flexibility—Te ability of the system to cope


with changes in the products to be processed by the system. Generally, productivity tends to decline with increasing job flexibility. Most of the emphasis on achieving flexibility in manufacturing systems has been related to product flexibility. Plant Layout Flexibility—Te ability of a job shop to


respond to known and future product mixes. Flexibility in facilities’ design literature is often defined as the capabil- ity of a layout to react to disturbances caused by future change. Four areas that can affect a shop layout are changes in product mix, changes in product volume, changes in the


在目前的市场环境中,客户正在寻找为中小批量 产品实现灵活的交货周期的解决方案,使生产管理 具有良好经济性的小型企业对客户需求做出快速反 应。为了使小批量生产更加经济,这就需要很大程 度的柔性。以下是中小型铸造企业所需柔性的几个 分类标准,或者类型。


转换的柔性——在一段时间内同时生产的不同 产品的数量;产品生命周期长短的不确定性导致的 结果。


铸造设备的转换时间能够随着基本的处理方法 而减少,例如,安装远程驱动,确保工具与设备的 接触,消除了取热件的时间,为操作者提供水合作 用。


产品模块柔性——通过零部件模块化使产品设计 模块化,在产品系列中使用通用的零部件从而减少 产品的差异化。模块化产品结构能够减少零部件的 种类,并使零部件供应范围更宽。


产品组合柔性——系统应对产品变化的能力。 通常,生产力随着工作灵活性的增强而下降。使专 业化生产系统具有柔性的大部分重点与产品柔性 有关。


工厂布局柔性化——能够应对现有和今后的产品 组合的生产车间。工厂设计文件中所描述的柔性经 常被定义为工厂布局应对未来发展变化的能力。影


64 | FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION December 2015


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