What are the reasons that affect the accuracy of visual laser marking

Visual laser marking is a highly accurate precision machining technology, which can usually achieve an accuracy between 0.1 and 0.05mm depending on the equipment specifications. However, due to the instability of mechanical equipment, there may occasionally be significant processing errors in visual laser marking.

There are many reasons for processing errors in visual laser marking. We can start by inspecting and troubleshooting each component of the equipment separately:

Laser: The beam emitted by the laser directly determines the processing effect. A high-quality laser usually emits a dense and regularly shaped beam. When a laser is used for a long time and approaching its service life, the quality of the laser beam will also be affected. On the other hand, problems occurring within the laser during certain periods can also lead to a decrease in beam quality, thereby affecting processing quality.

Control System: The visual laser control system mainly includes two aspects: visual recognition and laser control, both of which test the computational ability and underlying algorithms of the control system. In order to achieve high-precision visual laser marking processing in a long-term and stable manner, a corresponding precision visual marking control system must be equipped.

Machine: The higher the accuracy requirement, the more sensitive the equipment is to vibration and other situations. Laser marking machines are usually fixed in a certain position to prevent other equipment from interfering with machine operation due to vibration. However, in some cases, due to loose fixing devices, the anti vibration measures may fail, resulting in accuracy errors.

External environment: The higher the accuracy, the more sensitive the visual recognition system is to light, and the impact of lighting changes on accuracy will also be greater. Generally speaking, high-precision visual laser marking processing typically uses its own light source while shielding external light to maintain stability.

Electromagnetic interference: Electromagnetic interference is quite common in factory workshop environments because there are many high-power electrical appliances in these areas, and the current and magnetic field environment are complex. Currently, most equipment has taken grounding and shielding measures, but some old equipment has missed this point due to insufficient maintenance.

Overall, there are many reasons for errors in visual laser marking, and troubleshooting can be more complex than regular laser marking. This requires operators to have some experience, and to be careful and patient.