一、问题的提出要使机械制造厂能迅速响应市场的需求组织生产,就要求它对外界不断变化的条件有高度的适应性。随着技术进步和生产发展,小批量、多品种、高质量和交货期短等要求已成为当前机械工业日益明显的生产特征。这些多方面的因素,都要求机械制造厂具有高度的柔性,以保证能适应所有这些外界的变化,从而在市场竞争中确立自已的经济地位。传统的单件和小批量生产,一般是采用机群制的车间组织形式。为提高加工效率,利用数控机床是实现柔性自动化的重要手段,它能较大幅度地减少零件加工周期。但是,多年的生产经验表明,在机群制的生产组织形式下,它仍不能从根本上改变零件生产周 First, the issue put forward to make the machinery factory can quickly respond to the needs of the market to organize production, requiring it to the changing conditions of the outside world have a high degree of adaptability. With the advancement of technology and the development of production, the demands of small quantities, varieties, high quality and short delivery time have become the increasingly obvious characteristics of production in the current machinery industry. These various factors require the machinery manufacturer to be highly flexible in order to be able to adapt to all these changes and to establish its own economic position in the market competition. The traditional single-piece and low-volume production, the general is the use of cluster-based workshop organization form. In order to improve the processing efficiency, the use of CNC machine tools is an important means to achieve flexible automation, which can significantly reduce the parts processing cycle. However, many years of production experience have shown that in the form of a cluster-based production organization, it still can not fundamentally change the part production week