CNC spark machine is also called mirror spark machine. Its full name is precision CNC EDM machine tool. It is a fully automatic fully CNC spark machine tool controlled by computer CNC program. It is a necessary industrial equipment machine tool for industrial upgrading in our country. It has the advantages of precision micro-processing, and the processing materials are not limited by hardness, brittleness, viscosity and other material characteristics. It is mainly used in precision processing and production of mold manufacturing. In the design of CNC spark machine, we focus on the innovation of equipment modeling, structure, man-machine, etc. The CNC spark machine is designed and equipped with a high-performance CNC-controlled discharge system. It adopts a liquid crystal color display screen, which is convenient for the operator to read data and is simple and convenient to operate. Staff can set the working mode and speed of the machine according to requirements. More than 1000 processing conditions are set in the machine, which can be directly selected, reducing the difficulty of use and operation index, and improving work efficiency. There are more than 100 storage spaces, and the staff can save the processing conditions according to their personal needs, which is convenient for future use. The numerical control spark machine also has various and simple shaking processing and multi-point processing functions. Circular shape processing can not only do oval shape processing, but also do multi-point rotation and multi-point shaking processing, and can do simple mold correction. The designer considered the man-machine structure and innovated and optimized the CNC spark machine. The aluminum casting with sufficient thickness is used in front of the processing tank, which has the characteristics of no deformation, no oil leakage, and fast heat conduction. High efficiency can be achieved when processing; the automatic lifting slot door system is designed, the structure is simple and convenient for the assembly and maintenance of the workpiece; it is equipped with liquid level induction control function, when the liquid level is insufficient, the machine, and automatically replenish the processing fluid; if the liquid level is replenished, it will automatically resume processing; if it is not sufficiently replenished, the power supply will be automatically cut off to ensure the safety of use. The CNC spark machine is also equipped with a variety of self-checking and monitoring functions, which does not improve the precision, the operation is safer and easier, and the machinery is easy to maintain and maintain.