看了“电加工”77年第一期上无一厂“电火花线切割机自动对中心装置”一文,很受启发。但装置所用元件很多,一时难以实现。我们根据文中所述原理,利用数控台的计数装置,只用一只开关,一只三极管,两只电阻,作成一简易可行的找中心装置,使用时配合一条纸带,启动控制台板键,几分钟即可找到中心,尺寸公差0.01左右。 Read the “electric processing” 77 years on the first phase of a factory “WEDM automatic center device,” a text, very inspired. But the device used many components, sometimes difficult to achieve. We use the principle described in the article, the use of CNC counting device, using only a switch, a transistor, two resistors, making a simple and easy to find the center device, when used with a tape, start the control panel key, A few minutes to find the center, the size tolerance of about 0.01.