CNC milling machine is developed on the basis of the general milling machine. Processing principle of both is basic same. Structure is also similar. There are two types of tool magazine and non-tool magazine CNC milling machine. CNC milling machine with tool magazine also named machining center.
In addition to the processing characteristic of common metalworking milling machines, CNC milling machine has others, such as:
1.Strong parts processing adaptability, flexibility, it can be processed contour particularly complex or difficult to control the size of the parts, such as mold-type parts, shell-type parts, etc.
2.It can be processed the parts that common machine cannot be processed or hardly machined, such as the complex three-dimensional curves and curved parts Parts mathematical model described.
3.Process the parts that after locating a fixture, requiring multi-step processing parts.
4.High precision, stable quality and reliable processing, pulse equivalent of numerical control device is generally 0.001mm. High-precision CNC system is up to 0.1μm. In addition, the NC also avoids the operator’s operational errors.
5.High degree of automation, can reduce the operator’s labor intensity. Conducive to the production and management automation.
6.High efficiency, CNC mill machine tools generally don’t need to use special fixtures and other special process equipment. When replacing the workpiece, just use the data stored in the CNC machining program device, clamping tools, and adjusting the tool data, thus greatly reducing the production cycle.
Secondly, CNC mill machine has milling, boring, drilling function, making process is highly concentrated, greatly improving production efficiency. In addition, the CNC milling machine spindle speed and feed rate is continuously variable, and therefore beneficial to choose the best cutting parameters.