文档介绍：外文原文:
Group Technology
Group technology (GT) is a very important methodology in today’s manufacturing significant. The reason for this is that group technology, when utilized to its fullest extent, can affect most areas of manufacturing, including design, process planning, scheduling, routing, factory layout, procurement, quality assurance, machine tool utilization, tool design, producibility engineering, and assembly.
1 Introduction
Group technology is a simple concept that is used widely in various forms. For a variety of reasons, it is logical to collect and associate things based on features that they have mon. This approach is familiar to everyone for plants, animals, and chemicals. anizational structures have also been used for hardware and other obviously similar products within the manufacturing world. Group technology represents structured categorization of particular value to the munity. It is already widely used; perhaps 50% of panies use some form of GT.
Bath or lot production suffers from many inefficiencies due to part variety and the general-purpose nature (flexibility requirements) of machine tools in use on the shop floor. In fact, a Cincinnati Milacron study showed that 95% of the time a part spends on the shop floor is idle time, the other 5% is divided between setup and teardown of the machine tool. The future breakdown of the 5% of on-machine time was