人们对商品的选择标准是质量要好,价格要便宜。选择机床也是如此,因它是生产工具,更要求高生产率。因此,在保证质量的条件下,不断提高机械加工的生产率则是推动机床技术发展的动力。 提高生产率通常意味着降低制造产品所需总的机动和辅助时间,换句话说,也就是使成本与使用价值 People choose the standard of goods is better quality, cheaper prices. The same goes for selecting a machine, because it is a tool of production and more demanding of high productivity. Therefore, under the condition of ensuring quality, continuously improving the productivity of machining is the driving force to promote the development of machine tool technology. Increasing productivity usually means reducing the total maneuvering and supporting time required to make a product, in other words, making cost and use value