ransformation of large-scale machine, spent only the cost of the new machine purchase 1 / 3, short delivery time. But some special circumstances, such as high-speed spindle, automatic tray switching systems and the production of the installation costs too costly and often raise the cost of 2 to 3 times compared with the purchase of new machine, only about 50 percent of savings investment.
同购置新机床相比，一般可以节省60％～80％的费用，改造费用低。特别是大型、特殊机床尤其明显。一般大型机床改造，只花新机床购置费用的1/3，交货期短。但有些特殊情况，如高速主轴、托盘自动交换装置的制作与安装过于费工、费钱，往往改造成本提高2～3倍，与购置新机床相比，只能节省投资50％左右。
4.3.2 stable and reliable mechanical properties, structure limited
4.3.2 机械性能稳定可靠，结构受限
By the use of bed, column, and other basic items are heavy and solid casting components, rather than kind of welding components of the machine after the high-performance, quality, and can continue to use the new equipment for many years. But by the mechanical structure of the original restrictions, it is not appropriate to the transformation of a breakthrough.
所利用的床身、立柱等基础件都是重而坚固的铸造构件，而不是那种焊接构件，改造后的机床性能高、质量好，可以作为新设备继续使用多年。但是受到原来机械结构的限制，不宜做突破性的改造。
4.3.3 become familiar with the equipment, ease of operation and maintenance
4.3.3 熟悉了解设备、便于操作维修
The purchase of new equipment, new equipment do not know whether to meet the processing requirements. Transformation is not, can be used to calculate the machine processing capacity; In addition, since the use of many years, the operator of the machine has long been understood that in the operation, use and maintenance of the training time is short, quick. Transformation of the machine tools installed, we can achieve full load operation.
购买新设备时，不了解新设备是否能满足其加工要求。改造则不然，可以精确地计算出机床的加工能力；另外，由于多年使用，操作者对机床的特性早已了解，在操作使用和维修方面培训时间短，见效快。改造的机床一安装好，就可以实现全负荷运转。
4.3.4 can take full advantage of the existing conditions
4.3.4 可充分利用现有的条件
Take full advantage of the existing foundation, not like buying new equipment as necessary to build a foundation.
可以充分利用现有地基，不必像购入新设备时那样需重新构筑地基。
4.3.5 can be used as control technology
4.3.5 可以采用最新的控制技术
According to the development speed of technological innov
