Unit 6 Group technology.ppt

Unit 6 Group technology * Group technology is a manufacturing philosophy that involves identifying and grouping components having similar or related attributes in order to take advantage of their similarities in the design and/or manufacturing phases of the production cycle. Historically, this novel principle first came into being here in the United States in 1920, when Frederick Talor supported the idea of grouping parts that required special operations. He was followed by the Jones and Lamson Machine Company in the early 1920s, which used a crude form of group technology to build machine tools. Their manufacturing approach involved such principles as departmentalization by product rather than by process and minimizing the routing paths. Today, group technology is implemented through 成组技术 理念 标识 新颖的 原始的 部门划分，分部门组织经营法 工艺 实施，执行 相关的 属性 the application of well-structured classification and coding systems and supporting software to take advantage of the similarities of components. Reasons for Adopting Group Technology Modern manufacturing industries are racing a lot of challenges caused by growing international competition and fast-changing market demands. These challenges, which are exemplified in the following list, have been and can be successfully met by group technology: ● There is an industrial trend toward low-volume production (small lot sizes) of a wider variety of products in order to meet the rising demand for specially ordered products in today’s affluent societies. In other words, the share of the batch-type production in industry is growing day after day, and it is anticipated that 75 percent of all manufactured parts will be in small lot sizes. 举例说明 富裕的 比例 分批式 预期 ● As a result of the first factor, the conventional shop organization (I.e. , departmentalization by process) is becoming very inefficient and obsolete because of the wasteful routing paths of the products between the various machine tool departments. ● There is a need to in