The general numerical machine tool is mainly to automatically process the machined parts in accordance with the pre-prepared machining program. We compile the machining process route, process parameters, tool movement trajectory, displacement, cutting parameters and auxiliary functions of the parts into a machining program sheet in accordance with the instruction code and program format specified in the numerical machine tool, and then record the contents of the program sheet on the control medium. Then it is input into the numerical machine tool's numerical control device to direct the machine tool to process parts.

The whole process from the analysis of the part drawing to the manufacture of the control medium is called the preparation of the numerical control program. The difference between numerical machine tool and ordinary machine tool is that the controlled machine tool automatically processes parts according to the program, while the ordinary machine tool needs to be operated by people, and we can achieve the purpose of machining different parts by changing the program of controlling the machine tool action. Therefore, the numerical machine tool is especially suitable for machining parts with small batch and complex shape and high precision because the numerical machine tool needs to process parts in accordance with the program. After the programmer has prepared the program, the programmer can input it into the CNC device to command the machine tool work. The input to the program is via the control medium.

numerical machine tool of precision parts is composed of 5 parts: lightweight machine tool body, high-density AC servo motor, high-precision magnetic encoder, servo unit and motion control system. It is characterized by its lightweight appearance, complete functions in addition to the automatic tool library and the performance indicators of conventional CNC machining centers. Compared with the conventional precision parts processing, the system has higher operating efficiency and lower use cost, and is competitive in many aspects such as ease of operation, product price and functional reorganization. It is a popular product that can meet the general needs of computer digital control, automated operations, high-precision processing, and is a powerful assistant for production, teaching, personal creation and labor.

numerical machine tool of precision parts machining is programmed by CNC machining language. When the power supply of precision parts machining center cannot be switched on, if the power indicator (green) is not on; The safety of the power supply unit has been blown; This is caused by high input voltage, or the components of the power unit itself have been damaged; There are two lights on the power supply of the precision parts machining center unit, one is the power indicator light, which is green; One is the power alarm light, which is red, and the power supply unit here includes the power input unit and the power control part; Precision parts machining center input low voltage. Please check the voltage entering the power supply unit, the allowable value of the voltage is AC200V+10%, 50HZ±1HZ, the power supply unit is bad, there is damage, the power indicator is on, the alarm lamp is disappeared, but the power can not be switched on, this is because the conditions of the power supply are not met.

In order to improve the cutting performance, domestic and foreign have developed a special copper electrode wire for the precision numerical machine tool, some of which are copper wire inside, zinc alloy plated with a low melting point, and have a larger vaporizing bao explosion force in the fire discharge, which is the cutting speed of wire cutting is higher. The size is (0.10-0.30)mm; Similarly, when cutting fine slots or requiring rounded corners, tungsten wire or molybdenum wire can be used, with a small diameter of up to 0.02-0.06mm.

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