Solution to uneven bottom of laser carved wood

Wood is one of the most common processing materials for laser engraving. Laser engraving wood has the advantages of fine carving effect, accurate positioning, and no mechanical wear. With the help of intelligent control system, the processing plan can be flexibly adjusted to quickly complete personalized design. Therefore, it has a wide range of applications in industrial production, artistic creation, advertising signs and other fields.

Although laser engraving machines are intelligent CNC equipment, attention should also be paid to their use. Laser engraving of wood sometimes results in uneven bottoms, which is mainly related to the setting of processing parameters and hardware conditions. The relevant reasons include the following:

Speed too fast: The setting of processing speed should depend on the power and equipment conditions. Excessive processing speed can cause the laser tube response speed to not keep up, resulting in uneven light output and uneven bottom during engraving.

Pulse frequency too low: Pulse frequency is the number of times a laser pulse appears per unit time, usually measured in Hertz (Hz). For example, a pulse frequency of 100Hz means there will be 100 laser pulses per second. The pulse frequency should be adjusted to an appropriate value according to the material and processing requirements. Being too high or too low may cause problems such as uneven surfaces.

Small blowing flow rate: The purpose of blowing air is to blow away the tiny powder generated during the laser engraving process. Although it may seem inconspicuous, it can still have a significant impact on the processing. A small blowing flow rate may cause the powder to adhere and form horizontal protrusions, resulting in uneven bottom areas.

Optical path deviation or contamination: Optical path refers to the path of the laser emitted from the laser, guided by the focusing mirror and reflection mirror, and finally irradiated on the material. Due to wood carving, a large amount of tiny powder is generated, which adheres to the lens and affects the propagation of the laser, resulting in a decrease in beam quality or light deviation.

In general, laser engraving of wood requires attention to the setting of processing parameters, as well as the light path and air blowing situation. This issue is relatively simple and can be identified by testing multiple times using the exclusion method. Similar problems can also be analyzed using this approach. Although laser engraving is intelligent, attention to details is also necessary to successfully complete the processing.