The carving process is a kind of drilling and milling combined processing from the processing principle. The various data input forms of the carving machine manufacturers are freely swayed according to the needs. There are two types of computer engraving machines: laser engraving and mechanical engraving. Both of these types have high power and low power. Because the use of the carving machine is very extensive, it is necessary to understand the most suitable scale of use of various carving machines. The low power is only suitable for two-color boards, building models, small signage, three-dimensional crafts, etc. Because the power is too small, it greatly affects the scale of its use. The high-power carving machine can do things with a small power carving machine. It is most suitable for large incisions, reliefs, and carvings.
In CNC machine tools, electric spindles generally use variable frequency speed regulation. There are three main control modes: general variable frequency drive and control, vector control drive drive and control, and direct torque control. The general frequency conversion is scalar driving and control, and its driving control characteristic is constant torque driving, and the output power is proportional to the rotational speed. The dynamic function of the general frequency conversion control is not ambition, and the control function is unsatisfactory at low speed, the output power is not stable, and the C axis function is not available. However, the price is cheap and the structure is simple, and it is generally used for grinding machines and general high-speed milling machines.
The vector control skill is modeled after the DC motor, oriented by the rotor field, and driven and controlled by vector transformation. It has outstanding dynamic functions. The vector steering driver has a large torque value when it is just started. In addition, the electric spindle itself has a simple structure and a small inertia, so the acceleration is large, and the speed limit can be reached instantaneously after the launch. This kind of driver has two kinds of open loop and closed loop. The latter can complete the azimuth and speed response, not only has better dynamic function, but also can complete C axis function; while the former has poor dynamic function and does not have C axis function. But the price is cheaper.
