Overview of the engraving machine

Engraving is a kind of drilling and milling combined processing from the principle of machining. The engraving machine manufacturer engraving machine has a variety of data input modes. 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 engraving machine has a wide range of applications, it is necessary to understand the most suitable range of applications for various engraving machines. The low power is only suitable for two-color boards, architectural models, small signage, three-dimensional crafts and so on. Because the power is too small, it greatly affects the scope of its application. The high-power engraving machine can do things like a low-power engraving machine. Ideal for large cuts, reliefs, and engravings.
In CNC machine tools, the electric spindle usually adopts the frequency conversion speed regulation method. There are three main control modes: common variable frequency drive and control, vector control drive drive and control, and direct torque control. The common frequency conversion is scalar drive and control, and its drive control characteristic is constant torque drive, and the output power is proportional to the rotational speed. The dynamic performance of ordinary variable frequency control is not ideal. The control performance is not good at low speed, the output power is not stable enough, and the C axis function is not available. However, it is cheap and simple in structure, and is generally used in grinding machines and ordinary high-speed milling machines.
The vector control technology mimics the control of the DC motor, and is oriented by the rotor field. The vector transformation method is used to realize the drive and control, and has good dynamic performance. The vector control driver has a large torque value at the beginning of the start, and the electric spindle itself has a simple structure and a small inertia, so the starting acceleration is large, and the allowable limit speed can be instantaneously achieved after starting. This kind of driver has two kinds of open loop and closed loop. The latter can realize the feedback of position and speed. It not only has better dynamic performance, but also can realize C axis function. The former has poor dynamic performance and does not have C axis function. But the price is cheaper.