机械加工工厂,尤其是大批量生产的工厂,工序工程能力是一项重要的指标。它反映了工序加工的质量稳定程度。过去工程能力的测定全部依靠手工计算,费工费时。即使是使用了电子计算器之后,也还是十分麻烦的事情。因为数据多,手工操作容易出错,还因为是事后整理计算,不能及时地反馈到操作工位上去,因而限止了它的使用。手提式通用数字计算机,具有体积小、价格低、操作方便等一系列优点。用手提式计算 Machining factories, especially in high-volume factories, process engineering capacity is an important indicator. It reflects the quality of the process of processing stability. The past determination of engineering capacity all rely on manual calculation, time-consuming work. Even using the electronic calculator, it is still very troublesome thing. Because of the data, manual operation error-prone, but also because it is calculated after the incident, can not be timely feedback to the operating station up, thus limiting its use. Portable universal digital computer, with small size, low price, easy operation and a series of advantages. Calculated by hand