The difference between laser engraving machine and CNC engraving machine

- Nov 28, 2019-

Talking about the difference between laser engraving machine and numerical control engraving machine, the most obvious difference is that laser engraving machine uses laser melting or burning method for engraving. Numerical control engraving machine uses digital technology to control cutting tools or laser head and ultrasonic head for engraving. Laser engraving machine can be CNC engraving machine. CNC engraving machine can also be equipped with laser head to carve. So there is an intersection between the two.

Although both of them adopt numerical control system, their working principle and mechanical structure are different. In contrast, the structure of CNC engraving machine is simple. Through the control of CNC system of computer, the engraving machine automatically selects appropriate engraving tools to carve on the X, y and Z axes of the machine tool.

Laser engraving machine is divided into different special machines according to the specific use. The structure of special machines is basically the same. Laser source emits laser, CNC system controls leisai stepping motor, so that laser head, reflector, lens and other optical elements can move the focus on the X, y, Z axis of the machine tool, so as to ablate materials for engraving.

The computer and leisai stepping motor are similar in the numerical control system, but the specific size and power are different. The biggest difference between laser engraving machine and CNC engraving machine in structure is that the cutting tool of laser engraving machine is a complete set of optical elements, while the cutting tool of CNC engraving machine is a carving knife of various entities. In addition, from the perspective of external light, the two are also different.

1: laser engraving and polishing are completed once; CNC is completed twice.

2: for the places with narrow and delicate parts, such as the eyes of mice (with a diameter of 1mm) and the tail turning, the laser beam can be carved and cut, which is smooth and bright; however, the numerical control tools can not help.

3: the laser beam diameter is only 0.01mm, and the CNC tool is 20 times larger, which wastes materials.

4: the laser speed is fast. The laser speed is 2.5 times that of the CNC engraving machine.

5: laser energy consumption is less than that of CNC engraving machine;

6: the laser has no noise, pollution and high efficiency; the CNC machine has large noise and pollutes the environment.

7: the laser is non-contact processing and does not need to fix the workpiece; the CNC is contact processing and needs to fix the workpiece.

8: the laser can process soft materials, such as cloth, leather, film, etc.; the CNC can't process because it can't fix the workpiece.

Therefore, the advantages of laser engraving machine are more and more widely used in advertising signs, plexiglass products, garment processing, leather processing, product marking and other industries.